CN209743580U - Leakage-proof combined pad for cylinder of gasification rod mill - Google Patents
Leakage-proof combined pad for cylinder of gasification rod mill Download PDFInfo
- Publication number
- CN209743580U CN209743580U CN201821999823.XU CN201821999823U CN209743580U CN 209743580 U CN209743580 U CN 209743580U CN 201821999823 U CN201821999823 U CN 201821999823U CN 209743580 U CN209743580 U CN 209743580U
- Authority
- CN
- China
- Prior art keywords
- sealing element
- pad
- leak
- seal
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002309 gasification Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 77
- 210000004907 gland Anatomy 0.000 claims abstract description 28
- 239000002131 composite material Substances 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims 1
- 239000003250 coal slurry Substances 0.000 abstract description 19
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 239000003245 coal Substances 0.000 description 9
- 125000004122 cyclic group Chemical group 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000755266 Kathetostoma giganteum Species 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000037081 physical activity Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Crushing And Grinding (AREA)
- Sealing Devices (AREA)
Abstract
The utility model discloses a leakage-proof combined pad for a cylinder of a gasification rod mill, which comprises a bottom fixed pad fixed on a round hole of the cylinder of the rod mill, wherein the bottom fixed pad is fixedly connected with a positioning ring which is concentrically arranged with the round hole of the cylinder of the rod mill, an annular soft sealing element is arranged in the positioning ring, and an upper gland is arranged at one end of the soft sealing element, which is far away from the bottom fixed pad; the soft sealing device is characterized by further comprising a bolt, wherein the bolt sequentially penetrates through the upper gland, the soft sealing element and the bottom fixing pad to be sealed. The utility model provides a problem that easy damage that current sealing member exists leads to the coal slurry to leak. The bottom fixing pad, the locating ring and the upper gland are utilized to form a sealed space, the sealed space is filled with the hard sealing element and the soft sealing element, the upper gland extrudes the soft sealing element through the fastening piece, the soft sealing element which is extruded and deformed forms axial and radial sealing on the hard sealing element under the limitation of the locating ring, and a sealed effective sealing cavity is formed on a leakage position.
Description
Technical Field
The utility model belongs to the technical field of coal chemical industry accessory, concretely relates to gasification rod mill barrel is with preventing leaking combination pad.
Background
The Texaco coal water slurry gasification process requires a qualified coal water suspension, coal water slurry. The coal slurry preparation device adopts wet coal grinding to prepare coal slurry, specifically, a motor drives a rod mill cylinder to rotate through a speed reducer, and a steel rod and raw coal in the cylinder are lifted to a certain height under the action of friction and centrifugal force when the mill cylinder rotates and then are thrown off; the thrown steel bar physically crushes the raw material coal, and simultaneously water and additives are added into the raw material coal to be mixed and ground into coal-water suspension liquid which has high concentration, low viscosity, good stability and easy transportation.
Along with the continuous accumulation increase of the operating life of the rod mill, the abrasion between the bolt hole for fixing the lining plate and the screw rod is continuously increased in the operating process, so that the original circular hole is gradually abraded into an elliptical hole. Along with the deformation of the right round hole of the bolt of the barrel body of the rod mill, the T-shaped flat head bolt for fixing the lining plate and the concentricity of the right round hole also generate relative displacement, so that the shaking amount of the bolt is increased, the damage degree of the rubber sealing gasket is accelerated, the early failure of the rubber sealing gasket is finally caused, and the safe, continuous and stable operation of the mill is seriously restricted. In addition, due to the working characteristics (the influence of free falling bodies after the steel bars are lifted and the gravity of the steel bars), the sealing failure caused by the loosening of nuts, the premature damage of rubber sealing gaskets and other reasons can occur after the fixing bolts of the lining plate of the cylinder body of the rod mill are used for a period of time, and the phenomena of slurry leakage and slurry throwing are frequently caused.
According to the phenomenon of coal slurry leakage of the rod mill barrel bolt, the leakage reason is analyzed, and the leakage reason is specifically as follows:
a. The rubber gasket is cracked at the edge or torn at the end face due to serious extrusion deformation in the using process, so that coal slurry leaks along the cracked section to cause the radial leakage of the coal slurry;
b. When the coal slurry is operated, slight axial 'play' of the barrel bolt is caused by the throwing-off micro-vibration of the steel bar, so that the contact part of the inner ring of the rubber sealing gasket and the screw is damaged too early, and the coal slurry is thrown out along the screw to cause 'axial leakage';
c. During operation, due to the micro-vibration transmission generated by the falling of the steel bar, the 'coal slurry leakage' caused by the loosening of the nut is caused;
d. During operation, the abrasion of the joint of the root of the T-shaped flat-head bolt and the lining plate is increased, so that the coal slurry leakage caused by the loosening of the bolt is caused;
e. Along with the accumulative superposition of the running time, the abrasion between the newly replaced steel pad and the screw is increased continuously, so that the right circular hole of the steel pad is abraded and deformed, and coal slurry leakage is caused by the displacement of the screw.
In order to maintain the normal operation of the Texaco coal gasification process device and reduce the coal slurry leakage phenomenon, maintenance staff need to perform the leakage elimination work of fastening the bolt of the cylinder body of the rod mill and changing the cushion repeatedly; the bolt fastening leakage elimination work is physical activity with lower technical content, and due to the influence of environmental protection factors, namely leaked coal slurry must be cleaned in time, higher requirements are provided for maintainers: the work must be done in time to quickly solve the leakage point. Therefore, it is imperative to develop a seal that can operate safely for long periods of time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gasification rod mill barrel is with preventing leaking the composite pad, has solved the easy damaged problem that leads to the coal slurry to leak that current sealing member exists.
The utility model adopts the technical proposal that: the leakage-proof combined gasket for the cylinder body of the gasification rod mill comprises a bottom fixing gasket fixed on a circular hole of the cylinder body of the rod mill, wherein the bottom fixing gasket is fixedly connected with a positioning ring; the soft sealing part sealing device is characterized by further comprising a bolt, a through hole is formed in the position, corresponding to the circle center of the soft sealing part, of the upper gland and the bottom fixing pad, the bolt sequentially penetrates through the through hole of the upper gland, the soft sealing part and the through hole of the bottom fixing pad to be effectively sealed.
the utility model is also characterized in that,
And an annular hard sealing element is sleeved in the soft sealing element.
The hard sealing piece is provided with an internal thread which is matched with the thread surface of the bolt, and the hard sealing piece is in contact with the thread surface of the bolt.
one end of the bolt, which is far away from the bottom fixing pad, is provided with at least one fastener, and the at least one fastener is in contact with the upper gland.
And one side of the upper gland close to the bottom fixing pad is provided with an annular boss, and the annular boss is in contact with the upper end face of the soft sealing element.
the soft sealing piece is lower than the hard sealing piece in height, and a gap exists between the upper gland and the hard sealing piece.
the upper surface of bottom mounting pad is provided with annular groove, the position circle is close to the lower terminal surface of bottom mounting pad is provided with cyclic annular boss, annular groove and cyclic annular boss shape suit.
The soft sealing element is a rubber sealing element.
the hard sealing element is a nylon sealing element.
The utility model has the advantages that: the utility model discloses a gasification rod mill barrel is with preventing leaking the problem that the easy damage that exists has solved current sealing member leads to the coal slurry to leak. The bottom fixing pad, the locating ring and the upper gland are utilized to form a sealed space, the sealed space is filled with the hard sealing element and the soft sealing element, the upper gland forms certain extrusion on the soft sealing element through the fastening piece, the soft sealing element subjected to extrusion deformation forms axial and radial sealing on the hard sealing element under the limitation of the locating ring, and a sealed effective sealing cavity is formed relative to a leakage position.
Drawings
Fig. 1 is a schematic structural view of the leakage-proof combined pad for the cylinder of the gasification rod mill of the present invention.
In the figure, 1, a bottom fixing pad, 2, a locating ring, 3, a hard sealing element, 4, a soft sealing element, 5, an upper gland, 6, a bolt, 7, a fastening nut, 8, a locking nut and 9, a rod mill cylinder body.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The structure of the leakage-proof combined pad for the cylinder of the gasification rod mill of the utility model is shown in figure 1, and comprises a bottom fixed pad 1 fixed on a round hole of a cylinder 9 of the rod mill, wherein the bottom fixed pad 1 is fixedly connected with a positioning ring 2, the positioning ring 2 and the round hole of the cylinder 9 of the rod mill are concentrically arranged, an annular soft sealing element 4 is arranged in the positioning ring 2, and an upper gland 5 is arranged at one end of the soft sealing element 4 away from the bottom fixed pad 1; still include bolt 6, go up and be equipped with the through-hole on gland 5 and the bottom mounting pad 1, these two through-holes and soft sealing member 4 are concentric and diameter and bolt 6 phase-match, and bolt 6 passes through the through-hole of gland 5, soft sealing member 4 and the through-hole of bottom mounting pad 1 in proper order and passes through threaded connection. By way of example, the soft seal 4 is a rubber seal. In this embodiment, the bottom fixing pad 1, the positioning ring 2 and the upper gland 5 are made of metal.
An annular hard sealing member 3 is further sleeved in the soft sealing member 4, and the hard sealing member 3 is in contact with a thread surface of the bolt 6. Preferably, the hard seal 3 has an internal thread adapted to the threaded surface of the bolt 6. By way of example, the hard seal 3 is a nylon seal. The hard sealing element 3 and the bolt 6 are screwed to form effective surface sealing, the original linear contact sealing is successfully converted into surface contact sealing (the inner wall of the original sealing gasket is in linear sealing contact with the bolt, the contact area of the technically improved hard sealing element 3 and the bolt 6 is increased, and the spiral labyrinth sealing effect is provided), and the problem of axial leakage of coal slurry thrown out along the bolt 6 is solved. And the soft sealing element 4 and the hard sealing element 3 are combined in a soft and hard sealing mode, so that the problem of coal slurry leakage caused by untight sealing in the sealing cavity is solved.
One end of the bolt 6 far away from the bottom fixing pad 1 is provided with at least one fastener, and the at least one fastener is in contact with the upper gland 5. In order to prevent the bolt 6 from loosening, double nuts with simple structure, convenient disassembly and assembly and convenient operation are preferably selected for installation and self-locking so as to achieve the effects of looseness prevention and self-locking of the nuts, namely, the nuts are tightly attached to one locking nut 8 at the outer side of the fastening nut 7 for fixation.
One side of the upper gland 5 close to the bottom fixing pad 1 is provided with an annular boss, the annular boss is in contact with the upper end face of the soft sealing element 4, the height of the soft sealing element 4 is lower than that of the hard sealing element 3, and a gap exists between the upper gland 5 and the hard sealing element 3, so that the effectiveness of the sealing effect is guaranteed. Go up the cyclic annular boss of gland 5 to avoid it to contact with position circle 2, go up gland 5 and position circle 2 in the use and reach set for distance 1.5 ~ 2.0mm, both guaranteed the miniature bullet volume that seal chamber kept in the use like this, compensatied the fastening compression volume that T type screw rod produced because root wearing and tearing in the use again.
The upper surface of bottom mounting pad 1 is provided with annular groove, and the lower terminal surface that position circle 2 and bottom mounting pad 1 contacted is provided with cyclic annular boss, and annular groove suits with cyclic annular boss shape. Relative displacement can not take place for position circle 2 under the cooperation of the annular groove of mutually supporting and cyclic annular boss, forms a inclosed space cavity in position circle 2, makes soft sealing member 4 form effective seal through last gland 5 extrusion back, and the coal slurry does not have the department and leaks.
When the utility model is assembled, firstly, the bottom fixing pad 1 of metal is welded on the barrel body 9 of the rod mill by adopting a stay wire and a circumference positioning method, the concentricity of the bottom fixing pad 1 and the right circular hole of the barrel body 9 of the rod mill and the straightness of each flat steel pad of the barrel body are ensured, and the size of the lining plate of the barrel body of the rod mill is ensured to meet the requirement; and then the nylon sealing element is screwed on the bolt 6(M39 x 4) of the fixed cylinder liner plate, then the positioning ring 2, the rubber sealing element and the steel gland 5 are sequentially installed, and finally the fastening nut 7 and the locking nut 8 are installed, so that the rubber sealing element is extruded to a certain degree through the upper gland 5, the extruded and deformed rubber sealing element forms certain axial and radial sealing for the closed cavity under the limitation of the external positioning ring 2, and the problem of coal slurry leakage is fundamentally solved.
Claims (9)
1. the leakage-proof combined gasket for the cylinder body of the gasification rod mill is characterized by comprising a bottom fixing gasket fixed on a circular hole of the cylinder body of the rod mill, wherein the bottom fixing gasket is fixedly connected with a positioning ring; the soft sealing device is characterized by further comprising a bolt, wherein the bolt sequentially penetrates through the upper gland, the soft sealing element and the bottom fixing pad to be sealed.
2. A leak-resistant composite gasket as set forth in claim 1 wherein said soft seal is further nested with an annular hard seal.
3. The leak-resistant composite gasket as recited in claim 2 wherein the hard seal has internal threads that conform to the threaded surface of the bolt.
4. The leak-resistant composite gasket of claim 1 wherein an end of said bolt remote from said bottom securement pad is provided with at least one fastener, said at least one fastener contacting said upper gland.
5. The leak-resistant composite gasket of claim 2 wherein said upper gland has an annular ledge on a side thereof adjacent said bottom securement pad, said annular ledge contacting an upper end surface of said soft seal.
6. The leak-resistant composite gasket as recited in claim 5 wherein the soft seal has a lower height than the hard seal, a gap being present between the upper gland and the hard seal.
7. A leak-resistant composite gasket as set forth in claim 1 wherein said bottom securement pad has an annular groove in an upper surface thereof, and said spacer has an annular ledge on a lower end surface thereof adjacent said bottom securement pad, said annular groove and annular ledge being correspondingly shaped.
8. The leak-resistant composite gasket as recited in claim 1, wherein the soft seal is a rubber seal.
9. The leak-resistant composite gasket as recited in claim 2 wherein said rigid seal is a nylon seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821999823.XU CN209743580U (en) | 2018-11-30 | 2018-11-30 | Leakage-proof combined pad for cylinder of gasification rod mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821999823.XU CN209743580U (en) | 2018-11-30 | 2018-11-30 | Leakage-proof combined pad for cylinder of gasification rod mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209743580U true CN209743580U (en) | 2019-12-06 |
Family
ID=68700545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821999823.XU Expired - Fee Related CN209743580U (en) | 2018-11-30 | 2018-11-30 | Leakage-proof combined pad for cylinder of gasification rod mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209743580U (en) |
-
2018
- 2018-11-30 CN CN201821999823.XU patent/CN209743580U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209743580U (en) | Leakage-proof combined pad for cylinder of gasification rod mill | |
| CN202732946U (en) | Sealing gasket | |
| CN211008538U (en) | Oil well energy storage formula well head packing box | |
| CN211647972U (en) | Rotary joint for horizontal directional drilling machine and horizontal directional drilling machine | |
| CN211648752U (en) | Automobile fastener with prolonged service life | |
| CN2083653U (en) | Anti-stain sealed nut | |
| CN112814988A (en) | Bolt sealing structure of wet overflow type rod mill and wet overflow type rod mill | |
| CN219866252U (en) | Packing sealing structure of scraper conveyor | |
| CN219345207U (en) | Rod mill barrel bolt sealing device | |
| CN216112144U (en) | Rubber sealing ring | |
| CN210660992U (en) | Double-end fastening bolt of blowout preventer | |
| CN213611731U (en) | Rod mill barrel leaks thick liquid bolt structure | |
| CN115354986B (en) | Polished rod sealing assembly | |
| CN210943473U (en) | Powder sealing device for shaft of bucket elevator | |
| CN220523104U (en) | Oil leakage-proof bearing structure | |
| CN218377658U (en) | Cylinder sealing device for rod mill | |
| CN219692261U (en) | Sealing assembly for mill cylinder | |
| CN207229194U (en) | A kind of oil drain plug of oil pan structure | |
| CN217736223U (en) | High-speed shaft split type end cover device of power plant coal mill speed reducer | |
| CN211777319U (en) | Three-stage sealing protector for wellhead | |
| CN217976147U (en) | Polished rod sealing assembly | |
| CN209908988U (en) | Thrust oscillating bearing | |
| CN209762247U (en) | Novel metal bellows mechanical seal device | |
| CN211051471U (en) | Anti-abrasion structure of reactor sealing door | |
| CN210397708U (en) | Powder equipment gas ring axle sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 |