CN202220852U - Bolt sealing device connecting lining plate - Google Patents
Bolt sealing device connecting lining plate Download PDFInfo
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- CN202220852U CN202220852U CN2011202826041U CN201120282604U CN202220852U CN 202220852 U CN202220852 U CN 202220852U CN 2011202826041 U CN2011202826041 U CN 2011202826041U CN 201120282604 U CN201120282604 U CN 201120282604U CN 202220852 U CN202220852 U CN 202220852U
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- bolt
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- loam cake
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Abstract
The utility model discloses a bolt sealing device connecting a lining plate, in particular to a sealing device of a convex side lining plate bolt connection position of a ball mill, a rotary kiln and the like having certain sealing requirements, which consists of a sealing seat, a sealing gasket, a sealing upper cover, a regulating gasket, a bolt and a screw cap. The sealing seat is a seat in the shape of a circular truncated cone, a hole is located in the center of the sealing seat, a concave sunk face is located around the hole, the bolt penetrates out of the hole, the sealing gasket is sleeved on the bolt and located inside the concave sunk face, and the diameter of an inner hole of the sealing gasket is equal to that of the bolt. The diameter of an inner hole of the sealing upper cover is larger than that of the bolt, the sealing upper cover is sleeved on the bolt through an inner hole sleeve, and the regulating gasket and the screw cap are connected at the tail end of the bolt. The bolt sealing device connecting the lining plate has good sealing property, is simple in structure, does not damage the strength of a mill barrel, and further can prolong service life of the sealing gasket.
Description
Technical field
The utility model relates to a kind of seal arrangement, and particularly pebble mill, rotary kiln etc. have the seal arrangement of the convex surface lining-plate bolt link position of certain seal request.
Background technique
The bulk solid material of metallurgical and chemical process when producing, pass through grinding and processing, and the equipment of processing has multiple, but the most frequently used be exactly pebble mill.Steel ball or rod iron are housed in the pebble mill, and steel ball or rod iron and material produce bump when pebble mill rotates, and reach the purpose of pulverizing.Be lined with anti abrasive liner plate on the cylindrical shell of pebble mill, liner plate is to be fixed on the cylindrical shell by countersunk screw; Countersunk screw passes liner plate and designs behind the hole on the cylindrical shell, connects with nut in the outside of cylindrical shell, behind the fastening nut, reaches fixing purpose (like Fig. 1).
Owing to have the slit between mounting hole and the bolt, the material that grinds will be from overflowing befouling environment here.The hole of each construction bolt has just become a leakage point.The also relatively good sealing of dry grinding mill of processing dry material.But inside there is the wet mill of water, does not allow the material of pulpous state to spill, just difficult.The pebble mill that my company is used for phosphate rock grinding stone belongs to wet mill exactly, and we will add rock phosphate in powder and water simultaneously in producing kind in grinding machine, processed water content and starched at 30～40% rocks phosphate in powder.Because the many good fluidities of water content, so leak easily; Grinding mill barrel and surrounding devices often stick ore pulp, have had a strong impact on the site environment of production and worker's physical and mental health.
Our sealing means of common solution grinding machine bolt hole leakage has two kinds at present,
1.1 conventional type
Between the plain cushion and grinding mill barrel of bolt, add rubber gasket (like Fig. 2).Because the cylindrical shell of grinding machine is the cylndrical surface, thus be curved surface rather than plane around the bolt hole on cylindrical shell, and the end face of nut is the plane, so just formed the sealing configuration on a pair of curved surface and plane.When screwing nut, rely on the distortion of rubber between plane and the curved surface and play seal action.And grinding machine is a heavy load equipment, and when the tight power of lining-plate bolt was not enough, leaking can appear again in this place; When tight power is too big; Under tight power effect, rubber pad is tightly defeated at powerful bolt and is compeled down outwards protrusion, even the leakage that also seldom can block ore pulp like this; In order to block leakage; Have only the nut of tight bolt again, rubber pad will split in half along the axial direction of grinding mill barrel when being pressed onto to a certain degree, thereby causes seal failure.
1.2 modified model
Around the hole of construction bolt on the ball mill barrel, process a concentric concave station, with the sealing configuration (like Fig. 3) of plane between bolt end face and the grinding mill barrel and curved surface, be modified into the sealing configuration on plane and plane.This structure has solved the problem that rubber pad splits in half because of pressure is excessive, has guaranteed effective plane sealing between bolt hole plane and the nut end face.
Because lining-plate bolt is to run through inner with the outside attachment bolt of grinding machine, the outer surface of bolt all contacts with ore pulp; Just formed two pairs of sealing pairs, a pair of is the end face seal of nut, and also having a pair of is the sealing of the screw thread on the bolt.This improvement has solved the sealing of end face, yet, the sealing that does not still solve screw thread; Ore pulp can be along the screw thread of bolt to external leakage.Yet the rubber pad outwards phenomenon of protrusion still solves existence; The sealing mat is in the cambered outwards while, and the thickness of mat is with regard to attenuate, and when arriving to a certain degree to evagination, because the sealing mat is too thin, tight again nut is also just of no use, have to change mat.
This in addition improvement owing to around the bolt hole of cylindrical shell, process a concave station, has reduced the intensity of cylindrical shell.
Summary of the invention
The purpose of the utility model is intended to overcome the defective of existing technology, and a kind of good seal performance, simple in structure is provided, and does not damage grinding mill barrel intensity, and can prolong the bolt seals device of the connection liner plate in sealing gasket working life.
The bolt seals device of the described connection liner plate of the utility model; Be made up of sealing seat, sealing gasket, sealing loam cake, adjusting pad, bolt, nut, sealing seat is the frustoconic shape stand, and there is a hole in the central authorities of sealing seat; Around the hole is the spill heavy stand; Bolt passes from the hole, and sealing gasket is socketed on the bolt and is positioned at the spill heavy stand, and the size of the endoporus of sealing gasket is identical with the diameter of bolt; The diameter of bore size of sealing loam cake is than the diameter of bolt, and is connected on the bolt through inner hole sleeve, and the bolt end is connected with regulates pad and nut.Described nut is a double nut.
The circular arc transition is arranged between the facade of the indent of described spill heavy stand and the bottom surface, and the bottom surface of spill heavy stand is the low high conical surfaces all around of central authorities.
The interior circular diameter of described spill heavy stand is identical with the interior circular diameter of sealing loam cake, and greater than the diameter of bolt, makes bolt therefrom to pass and get final product.
There is the hole measure-alike with the diameter of bolt centre of described sealing gasket, and the external diameter of sealing gasket is identical with the facade diameter of spill heavy stand, and sealing gasket just can be put in the spill heavy stand.
Described sealing loam cake is for falling dish; Its machining sheet thickness is the 3-10 millimeter, and the loam cake height is 2～3 times of thickness, and circular diameter is greater than the diameter of bolt in the hole of sealing loam cake central position; Make bolt therefrom to pass and get final product that the end face and the lower limb jointing place of sealing loam cake are circular arc.
Between described sealing loam cake and nut, spacer is arranged, spacer is socketed on the bolt.
The bolt seals device of the described connection liner plate of the utility model; Two pairs of sealing pairs that have the convex surface lining-plate bolt of certain radian to grinding machine etc.; Design a kind of sealing configuration, solve the sealing of convex surface liner plate nut end face when connecting and the sealing of bolt thread with bolt with certain arc.Strengthen cylinder strengths such as grinding machine or rotary kiln simultaneously, solve the problem that mat can not use for a long time, prolonged the working life of mat, avoid often changing a series of unnecessary trouble of being brought, improved manufacturing efficiency.
The utility model has following advantage before the construction bolt seal arrangement: when the utility model uses on the cylindrical shell of pebble mill, only needs to process mounting hole, when liner plate is installed, assembles in order according to the mounting point of liner plate, and fastening nut.If the utility model is used on existing pebble mill, also can directly utilize liner plate mounting hole original on the grinding mill barrel, just can install, do not need machining hole again.When liner plate is installed, assemble in order, and fastening nut.After the liner plate of whole table grinder all installs, fastening once all nuts of exerting oneself equably.Through confirming that bolt installs when all meeting the installation requirement of liner plate, arc welding by hand, four points of spot welding equably around the stand of each sealing seat.Pull down nut then, pull down sealing gasket, need not pull down bolt this moment, and directly technology of arc welding is welded on sealing seat on the grinding mill barrel by hand, but must full weld.During installation, can only pull down a nut after, just weld the sealing stand immediately, can not tear unified weldering stand behind the bolt open; Can not tear the sealing gasket bolt open and just stand welded, the high temperature of welding generation can burn out sealing gasket like this.
The utility model has been realized tri-dimensional sealed, has done comprehensive analysis to producing the mechanism of leaking, and the principle according to relevant has proposed design proposal, and used.Compare with existing technology; The utility model has manufacturing, simple and practical advantage is installed: can reach desirable sealing effect; Fundamentally solve the nut end face seal of grinding mill barrel lining-plate bolt all the time and the problem of thread seal, realized the zero leakage rate of grinding mill barrel bolt.And can prolong working life of gasket seal effectively, also strengthened the intensity of grinding mill barrel simultaneously; Solved grinding mill barrel, because processing lining-plate bolt mounting hole, the problem that causes intensity to reduce; Each mounting base has all become one to carrying out the stiffening ring of intensity compensation around the bolt hole, can apply to pebble mill, rotary kiln or other connecting bolt with convex surface liner of certain radian widely and seal.
Description of drawings
Fig. 1 is the existing technology structural representation.
Fig. 2 is the existing technology structural representation.
Fig. 3 is an A portion partial enlarged drawing among Fig. 2.
Fig. 4 is the existing technology structural representation.
Fig. 5 is a B portion partial enlarged drawing among Fig. 4.
Fig. 6 is the utility model structural representation.
Fig. 7 is a C portion partial enlarged drawing among Fig. 6.
Fig. 8 is the utility model sealing seat inner concave shape heavy stand structural representation.
Fig. 9 is a D portion partial enlarged drawing among Fig. 8.
Figure 10 is the utility model gasket structure schematic representation.
Figure 11 is the utility model top cover labyrinth structural representation.
Figure 12 is an E portion partial enlarged drawing among Figure 11.
Figure 13 is the utility model spacer structural representation.
Among the figure, the 1-sealing seat, 2-spill heavy stand, the 3-bolt, the 4-nut, the 5-gasket seal, 6-seals loam cake, 7-hole, 8-spacer, 9-sealing surface.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description, but be not limited to embodiment.
The tri-dimensional sealed device of the described ball grinding machine lining board bolt of the utility model, its structure are shown in Fig. 4-7, and seal arrangement is made up of sealing seat 1, sealing gasket 5, sealing loam cake 6, spacer 8, bolt 3, nut 4 six parts.
Sealing seat: sealing seat is the frustoconic shape stand, and there be the hole 7 of a somewhat larger in diameter in the diameter of bolt in the central authorities of sealing seat, around the hole 7 spill heavy stand 2 is arranged, and bolt 3 passes from hole 7.
Sealing seat is that frustoconic shape stand external diameter is φ
8, its effect mainly works to support sealing gasket.The centre processes one than diameter of bolt d
1Bigger hole 7, the diameter in hole 7 are φ
1In the hole 7 around to process diameter be φ
2Spill heavy stand 2 has arc transition between the facade of the indent of spill heavy stand 2 and the bottom surface, and the conical surface that the bottom surface of spill heavy stand 2 has is as shown in Figure 5.When receiving the impacting force of bolt 3, arc surface produces the reaction force F perpendicular to arc-shaped surface to sealing gasket 5; According to mechanics principle, F resolves into a power F vertically upward
1Power centripetal force F with a level sensing cylindrical hole center
2F
1Sealing gasket 5 is compressed, and when this power arrived to a certain degree greatly, ore pulp just can not produce face leakage along this face, thereby produced the effect of end face seal.Level is pointed to the centripetal force F at cylindrical hole center
2Make sealing gasket 5 produce distortion, move or expand, thereby mat is clamped on the outer surface of bolt 3 tightly to the center.In like manner, the reaction force F that the conical surface of spill heavy stand 2 produces sealing gasket 5, this power also resolves into power F vertically upward
1,
Level is pointed to the centripetal force F at cylindrical hole center
2Under the acting in conjunction of these vertical forces and horizontal force, reach purpose to nut 3 end faces and bolt thread sealing.
Sealing gasket is made with gum, one of middle processing and diameter of bolt d
1Identical bore dia is φ
3The external diameter of mat is φ
2Sealing gasket when mounted, the center line of its thickness will be over against the root of bolt thread, have half thely contact with screw thread, has half to contact with the smooth cylndrical surface of bolt, and formation sealing surface 9.As shown in Figure 6.
Sealing loam cake 6 usefulness thickness are not less than 3-10 millimeter steel plate and strike out down dish, and are as shown in Figure 7.Interior circular diameter is φ
2, cylindrical is then uncontrolled.Height H
1It is 2～3 times.The diameter dimension same holes in diameter of middle processing and hole 7.End face and lower limb have an arc transition, and when receiving the pressure of bolt, the cambered surface of annulus produces a power F to the sealing mat; According to mechanics principle, this power resolves into component F vertically downward
1, horizontal component F to the center
2Function is the same with sealing seat.
Bolt " 3 " must be played the back drawing through section, carries out machining then; No thread section at screw rod should carry out turning processing, reaches the degree of finish of regulation.The length of polished rod, with install the rear thread root in the central position of sealing gasket benchmark, carry out length computation.
Claims (7)
1. a bolt seals device that connects liner plate is made up of sealing seat, sealing gasket, sealing loam cake, adjusting pad, bolt, nut, it is characterized in that; Sealing seat is the frustoconic shape stand; There is a hole in the central authorities of sealing seat, are the spill heavy stand around the hole, and bolt passes from the hole; Sealing gasket is socketed on the bolt and is positioned at the spill heavy stand, and the size of the endoporus of sealing gasket is identical with the diameter of bolt; The diameter of bore size of sealing loam cake is greater than the diameter of bolt, and is connected on the bolt through inner hole sleeve, and the bolt end is connected with regulates pad and nut.
2. the bolt seals device of connection liner plate according to claim 1 is characterized in that, described nut is a double nut.
3. the bolt seals device of connection liner plate according to claim 1 is characterized in that, the circular arc transition is arranged between the facade of the indent of described spill heavy stand and the bottom surface, and the bottom surface of spill heavy stand is the low high conical surfaces all around of central authorities.
4. the bolt seals device of connection liner plate according to claim 1 is characterized in that, the interior circular diameter of described spill heavy stand is identical with the interior circular diameter of sealing loam cake, and greater than the diameter of bolt.
5. the bolt seals device of connection liner plate according to claim 1 is characterized in that there is the hole measure-alike with the diameter of bolt centre of described sealing gasket, and the external diameter of sealing gasket is identical with the facade diameter of spill heavy stand.
6. the bolt seals device of connection liner plate according to claim 1; It is characterized in that; Described sealing loam cake is for falling dish, and its machining sheet thickness is the 3-10 millimeter, and the loam cake height is 2～3 times of thickness; Circular diameter is greater than the diameter of bolt in the hole of sealing loam cake central position, and the end face and the lower limb jointing place of sealing loam cake are circular arc.
7. the bolt seals device of connection liner plate according to claim 1 is characterized in that, between sealing loam cake and nut, is provided with spacer, and spacer is socketed on the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202826041U CN202220852U (en) | 2011-08-05 | 2011-08-05 | Bolt sealing device connecting lining plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202826041U CN202220852U (en) | 2011-08-05 | 2011-08-05 | Bolt sealing device connecting lining plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220852U true CN202220852U (en) | 2012-05-16 |
Family
ID=46042879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202826041U Expired - Lifetime CN202220852U (en) | 2011-08-05 | 2011-08-05 | Bolt sealing device connecting lining plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220852U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056003A (en) * | 2013-02-07 | 2013-04-24 | 江西稀有金属钨业控股集团有限公司 | Fastening device for grinder barrel body lining plate |
| CN105987172A (en) * | 2015-02-06 | 2016-10-05 | 池州腾虎机械科技有限公司 | Bolt-connected bidirectional static sealing structure |
| CN106732991A (en) * | 2016-11-23 | 2017-05-31 | 江西稀有稀土金属钨业集团有限公司 | A kind of lining board of grinder bolt hole leakproof sizing device |
-
2011
- 2011-08-05 CN CN2011202826041U patent/CN202220852U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056003A (en) * | 2013-02-07 | 2013-04-24 | 江西稀有金属钨业控股集团有限公司 | Fastening device for grinder barrel body lining plate |
| CN105987172A (en) * | 2015-02-06 | 2016-10-05 | 池州腾虎机械科技有限公司 | Bolt-connected bidirectional static sealing structure |
| CN106732991A (en) * | 2016-11-23 | 2017-05-31 | 江西稀有稀土金属钨业集团有限公司 | A kind of lining board of grinder bolt hole leakproof sizing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: YUNNAN YTH INTERNATIONAL CHEMICAL CO., LTD. Free format text: FORMER NAME: YUNTIANHUA INTERNATIONAL CHEMICAL INDUSTRY CO., LTD., YUNNAN |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 650000 No. 1417, Dianchi Road, Kunming, Yunnan Patentee after: Yunnan YTH International Chemical Co., Ltd. Address before: 650000 No. 1417, Dianchi Road, Kunming, Yunnan Patentee before: Yuntianhua International Chemical Industry Co., Ltd., Yunnan |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120516 |