CN211315101U

CN211315101U - Coal pulverizer pull rod composite sealing device

Info

Publication number: CN211315101U
Application number: CN201922089511.6U
Authority: CN
Inventors: 赵瑞兵
Original assignee: Hebei Haohang Mechanical Equipment Co ltd
Current assignee: Hebei Haohang Mechanical Equipment Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-08-21
Anticipated expiration: 2029-11-28

Abstract

The utility model discloses a coal pulverizer pull rod composite seal device, including seal housing, pull rod, sealed rubber core, seal structure and sloping platform, the outside cover of pull rod is equipped with seal housing, and is provided with sealed chamber on the inner wall that seal housing is close to pull rod one side, the inside in sealed chamber all is fixed with equidistant sealed rubber core, and the one end and the pull rod in close contact with of sealed rubber core, and be fixed with the sheetmetal between the adjacent sealed rubber core, seal housing's bottom is provided with the base, and all is provided with the slot on the outer wall of seal housing both sides to be provided with the inserted bar on the base outer wall of slot position department, the one end of inserted bar extends to the inside of slot, seal housing's top is provided with seal structure, and the cover is equipped with the sloping platform on the pull rod outer wall of seal structure top. The utility model discloses not only improve the sealed effect when sealing device uses, avoided piling up of coal cinder, improved durability and tightness when sealing device uses moreover.

Description

Coal pulverizer pull rod composite sealing device

Technical Field

The utility model relates to a buggy processing equipment technical field specifically is a coal pulverizer pull rod composite sealing device.

Background

The coal pulverizer is the machinery that breaks the coal cinder and grinds into the buggy, it is the important auxiliary assembly of coal pulverizer, the pull rod of coal pulverizer not only will the up-and-down motion still the level rock, it is sealed comparatively difficult, seal structure is unreasonable to make the pull rod seriously wear, the diameter diminishes, the intensity step-down causes pull rod department to leak out the wind and leak the powder, thereby cause the unit operation unstable, the vibration increases, cause the damage of other parts even, in order to solve the problem that appears above, then need use a coal pulverizer pull rod composite seal device.

The pull rod composite sealing device on the market is various in types, can basically meet the use requirements of people, but still has certain defects, and has the following specific problems.

(1) When the traditional pull rod composite sealing device is used, the sealing performance of a common sealing structure is reduced due to long service time, so that the pull rod is easily damaged;

(2) when the traditional pull rod composite sealing device is used, large-particle coal blocks are easy to accumulate at the top end of the sealing device, so that the normal work of the pull rod is easy to be adversely affected;

(3) when the traditional pull rod composite sealing device is used, the sealing filler in the sealing cavity is quickly abraded, and meanwhile, the sealing shell is easily abraded, so that the durability and the tightness of the sealing device are reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coal pulverizer pull rod composite sealing device to it is not good to provide pull rod composite sealing device seal structure performance when using in solving above-mentioned background art, and the large granule coal cinder is piled up on sealing device's top and sealing device's persistence and the not good problem of tightness easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a coal pulverizer pull rod composite seal device, includes seal housing, pull rod, sealed rubber core, seal structure and sloping platform, the outside cover of pull rod is equipped with seal housing, and is provided with sealed chamber on seal housing is close to the inner wall on one side of the pull rod, seal housing's bottom is provided with the base, and all is provided with the slot on the outer wall of seal housing both sides to be provided with the inserted bar on the base outer wall of slot position department, the one end of inserted bar extends to the inside of slot, seal housing's top is provided with seal structure, and the cover is equipped with the sloping platform on the pull rod outer wall of seal structure top.

Preferably, the sealing cavities are internally fixed with sealing rubber cores at equal intervals, one end of each sealing rubber core is in close contact with the pull rod, and a metal sheet is fixed between every two adjacent sealing rubber cores.

Preferably, all be provided with the packing groove inside the seal housing of sealed chamber both sides, and the inside of packing groove is fixed with graphite packing, and graphite packing is mutually supported with seal housing.

Preferably, the inside of the sealing structure is sequentially provided with a sealing shell, a connecting cavity, a sealing inner shell, an inner shell lug and an outer shell lug, the sealing shell is sleeved on the outer wall of the pull rod at the top end of the sealing shell, the outer shell lug is fixed on the inner wall of the bottom of the sealing shell, and the connecting cavity is formed in the inner wall of the sealing shell, which is close to one side of the pull rod.

Preferably, the bottom end of the sealed outer shell is provided with a sealed inner shell, the sealed inner shell is tightly attached to the pull rod, the top end of the sealed inner shell extends to the inside of the connecting cavity and is fixed with an inner shell convex block, and the inner shell convex block and the outer shell convex block are matched with each other.

Preferably, seal housing's top is provided with the recess, and all is provided with the joint groove on the inner wall of recess both sides to inside the being provided with the joint lug of recess between the adjacent joint groove, the top and the sloping platform fixed connection of joint lug all are fixed with the elastic clamping piece on the outer wall of joint lug both sides, and the one end of elastic clamping piece extends to the inside in joint groove.

Compared with the prior art, the beneficial effects of the utility model are that: the coal mill pull rod composite sealing device not only improves the sealing effect when the sealing device is used, avoids the accumulation of coal blocks, but also improves the durability and tightness when the sealing device is used;

(1) the pull rod drives the sealing outer shell to synchronously move up and down by arranging the sealing outer shell, the connecting cavity, the sealing inner shell, the inner shell lug and the outer shell lug, and the outer shell lug and the inner shell lug are in mutual contact, so that the sealing inner shell and the connecting cavity form a sealed space, and the sealing effect of the sealing device in use is improved;

(2) the inclined table is pressed to enable the clamping lug at the bottom end of the inclined table to be clamped into the groove through the arrangement of the groove, the clamping groove, the inclined table, the clamping lug and the elastic clamping block, and meanwhile the elastic clamping block on the outer wall of the clamping lug is clamped into the clamping groove, so that large-particle coal blocks are enabled to fall outwards along the inclined edge of the inclined table, and the coal blocks are prevented from being accumulated;

(3) through being provided with packing groove, graphite packing, sealed chamber, sealed rubber core and sheetmetal, the pull rod contacts with sealed rubber core, can not with the rigid contact of seal housing, and the graphite packing of packing inslot portion still plays sealed effect after seal housing appears wearing and tearing simultaneously to persistence and tightness when sealing device uses have been improved.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

FIG. 2 is a schematic view of the front view of the present invention;

fig. 3 is an enlarged schematic structural view of the sealing structure of the present invention;

fig. 4 is an enlarged schematic structural diagram of a in fig. 1 according to the present invention.

In the figure: 1. a base; 2. sealing the housing; 3. a pull rod; 4. a packing groove; 5. graphite packing; 6. a slot; 7. sealing the cavity; 8. sealing the rubber core; 9. a sealing structure; 901. sealing the housing; 902. a connecting cavity; 903. sealing the inner shell; 904. inner shell lugs; 905. a housing projection; 10. a metal sheet; 11. inserting a rod; 12. a groove; 13. a clamping groove; 14. a sloping table; 15. clamping the convex block; 16. elastic clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a coal mill pull rod composite sealing device comprises a sealing shell 2, a pull rod 3, a sealing rubber core 8, a sealing structure 9 and an inclined table 14, wherein the sealing shell 2 is sleeved outside the pull rod 3, and a sealing cavity 7 is formed in the inner wall of the sealing shell 2, which is close to one side of the pull rod 3;

the sealing cavities 7 are internally fixed with sealing rubber cores 8 at equal intervals, one end of each sealing rubber core 8 is tightly contacted with the pull rod 3, and a metal sheet 10 is fixed between every two adjacent sealing rubber cores 8 and used for preventing the pull rod 3 from being directly contacted with the sealing shell 2 and reducing the abrasion of the sealing rubber cores 8;

the packing grooves 4 are arranged in the sealing shell 2 on two sides of the sealing cavity 7, the graphite packing 5 is fixed in the packing grooves 4, and the graphite packing 5 is matched with the sealing shell 2 and used for still playing a sealing role after the sealing shell 2 is worn;

the bottom end of the sealing shell 2 is provided with a base 1, the outer walls of two sides of the sealing shell 2 are provided with slots 6, the outer wall of the base 1 at the positions of the slots 6 is provided with an insertion rod 11, one end of the insertion rod 11 extends into the slots 6, the top end of the sealing shell 2 is provided with a sealing structure 9, and the outer wall of the pull rod 3 above the sealing structure 9 is sleeved with an inclined table 14;

a sealing outer shell 901, a connecting cavity 902, a sealing inner shell 903, an inner shell bump 904 and an outer shell bump 905 are sequentially arranged in the sealing structure 9, the sealing outer shell 901 is sleeved on the outer wall of the pull rod 3 at the top end of the sealing shell 2, the outer shell bump 905 is fixed on the inner wall of the bottom of the sealing outer shell 901, the connecting cavity 902 is arranged on the inner wall of the sealing outer shell 901 close to one side of the pull rod 3, the sealing inner shell 903 is arranged at the bottom end of the sealing outer shell 901, the sealing inner shell 903 is tightly attached to the pull rod 3, the top end of the sealing inner shell 903 extends into the connecting cavity 902 and is fixed with the inner shell bump 904, and the inner shell bump;

in the process of the up-and-down movement of the pull rod 3, the pull rod 3 drives the sealing outer shell 901 to synchronously move up and down, and at the moment, the outer shell convex block 905 and the inner shell convex block 904 are in mutual contact, so that the sealing inner shell 903 and the connecting cavity 902 form a sealed space, and the sealing effect of the sealing device is improved when in use;

the top of seal housing 901 is provided with recess 12, and all is provided with joint groove 13 on the inner wall of recess 12 both sides to recess 12 between the adjacent joint groove 13 is inside to be provided with joint lug 15, and the top and the sloping platform 14 fixed connection of joint lug 15 all are fixed with elastic joint piece 16 on the outer wall of joint lug 15 both sides, and the one end of elastic joint piece 16 extends to the inside in joint groove 13, has avoided the accumulational of coal cinder on seal housing 901 top.

The working principle is as follows: when the sealing device is used, a worker firstly presses the sloping platform 14 to enable the clamping convex block 15 at the bottom end to be clamped into the groove 12, meanwhile, the elastic clamping block 16 on the outer wall of the clamping convex block 15 is clamped into the clamping groove 13, the clamping convex block 15 is fixed at the top end of the sealing shell 901, large-particle coal blocks are enabled to fall outwards along the sloping edge of the sloping platform 14, so that the coal blocks are prevented from being accumulated, then, in the process of up-and-down movement of the pull rod 3, the pull rod 3 drives the sealing shell 901 to move up and down synchronously, at the moment, the shell convex block 905 is in contact with the inner shell convex block 904, so that the sealing inner shell 903 and the connecting cavity 902 form a sealing space, the sealing effect is improved when the sealing device is used, finally, the metal sheet 10 separates the sealing rubber cores 8, the abrasion of the sealing rubber cores 8 is avoided, the pull rod 3 is in contact with the sealing rubber cores 8, meanwhile, the graphite packing 5 in the packing groove 4 still plays a sealing role after the sealing shell 2 is worn, so that the durability and tightness of the sealing device during use are improved, and the work of the coal mill pull rod composite sealing device is completed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a compound sealing device of coal pulverizer pull rod, includes seal shell (2), pull rod (3), sealed rubber core (8), seal structure (9) and sloping platform (14), its characterized in that: the outside cover of pull rod (3) is equipped with sealed casing (2), and is provided with sealed chamber (7) on sealed casing (2) are close to the inner wall of pull rod (3) one side, the bottom of sealed casing (2) is provided with base (1), and all is provided with slot (6) on the outer wall of sealed casing (2) both sides to be provided with inserted bar (11) on base (1) outer wall of slot (6) position department, the one end of inserted bar (11) extends to the inside of slot (6), the top of sealed casing (2) is provided with seal structure (9), and the cover is equipped with ramp (14) on pull rod (3) outer wall of seal structure (9) top.

2. The compound sealing device of the coal mill pull rod as claimed in claim 1, wherein: the sealing cavity (7) is internally fixed with sealing rubber cores (8) at equal intervals, one end of each sealing rubber core (8) is tightly contacted with the pull rod (3), and a metal sheet (10) is fixed between every two adjacent sealing rubber cores (8).

3. The compound sealing device of the coal mill pull rod as claimed in claim 1, wherein: the sealing shell (2) on the two sides of the sealing cavity (7) is internally provided with a packing groove (4), a graphite packing (5) is fixed inside the packing groove (4), and the graphite packing (5) is matched with the sealing shell (2).

4. The compound sealing device of the coal mill pull rod as claimed in claim 1, wherein: the inner part of the sealing structure (9) is sequentially provided with a sealing outer shell (901), a connecting cavity (902), a sealing inner shell (903), an inner shell lug (904) and an outer shell lug (905), the outer wall of the pull rod (3) at the top end of the sealing shell (2) is sleeved with the sealing outer shell (901), the inner wall of the bottom of the sealing outer shell (901) is fixedly provided with the outer shell lug (905), and the inner wall of the sealing outer shell (901) close to one side of the pull rod (3) is provided with the connecting cavity (902).

5. The coal pulverizer pull rod composite sealing device of claim 4, wherein: the bottom of sealed shell (901) is provided with sealed inner shell (903), and sealed inner shell (903) and pull rod (3) closely laminate, and the top of sealed inner shell (903) extends to the inside of connecting chamber (902) and is fixed with inner shell lug (904), and inner shell lug (904) and outer shell lug (905) mutually support.

6. The coal pulverizer pull rod composite sealing device of claim 4, wherein: the top of seal housing (901) is provided with recess (12), and all is provided with joint groove (13) on the inner wall of recess (12) both sides to recess (12) inside between adjacent joint groove (13) is provided with joint lug (15), the top and sloping platform (14) fixed connection of joint lug (15), all be fixed with flexible joint piece (16) on the outer wall of joint lug (15) both sides, the one end of elasticity joint piece (16) extends to the inside in joint groove (13).