CN215720824U - Dedicated axial reciprocating motion sealing device of danger waste bin - Google Patents
Dedicated axial reciprocating motion sealing device of danger waste bin Download PDFInfo
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- CN215720824U CN215720824U CN202121930514.9U CN202121930514U CN215720824U CN 215720824 U CN215720824 U CN 215720824U CN 202121930514 U CN202121930514 U CN 202121930514U CN 215720824 U CN215720824 U CN 215720824U
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Abstract
An axial reciprocating motion sealing device special for a hazardous waste bin comprises a bin and a driving device positioned outside the bottom of the bin; the inner side of the bottom of the bin is provided with a material pushing device; the driving device comprises a mounting seat and an oil cylinder; one end of the mounting seat is welded with the side wall of the storage bin, and the other end of the mounting seat is fixedly connected with the oil cylinder; a horizontal piston rod and a sealing device are arranged in the mounting seat, and the sealing device is sleeved on the piston rod; the sealing device comprises a sealing sleeve gland, a sealing sleeve and a welding flange which are arranged in sequence; the welding flange is welded with the end plate; the special axial reciprocating motion sealing device for the hazardous waste bin has good sealing performance and high sealing structure strength, and can avoid the situations of material leakage and scraping of a piston rod.
Description
Technical Field
The utility model belongs to the technical field of hazardous waste disposal, and particularly relates to a special axial reciprocating motion sealing device for a hazardous waste bin.
Background
In the hazardous waste treatment process, the feed bin is mainly used for storing hazardous waste materials, and as hazardous waste has strong corrosivity, pungent smell and inflammability, once sealing fails, field personnel may contact hazardous waste to cause direct injury or cause safety events such as combustion and explosion, the feed bin is used as a common receiving and storing device, and the sealing property is of great importance.
The sealing mode between the conventional piston rod which axially reciprocates and the bin filled with hazardous wastes is plastic dust ring and polyurethane piston rod lip seal. The material leakage and the scraping of the piston rod are often caused by the strong corrosivity of the material, the existence of solid state or even small metal fragments in the material and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an axial reciprocating motion sealing device special for a hazardous waste bin, which has good sealing performance and high sealing structure strength and can avoid the situations of material leakage and piston rod scratching.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an axial reciprocating motion sealing device special for a hazardous waste bin comprises a bin and a driving device positioned outside the bottom of the bin;
the inner side of the bottom of the storage bin is provided with a material pushing device which can reciprocate along the horizontal direction; a piston hole is arranged on the side wall of the storage bin corresponding to the pushing device;
the driving device comprises a mounting seat and an oil cylinder; the mounting seat is in a horizontal cylindrical shape, one end of the mounting seat is provided with an annular end plate, the mounting seat is welded with the side wall of the storage bin through the end plate, the piston hole is positioned in the end plate, and the other end of the mounting seat is fixedly connected with the oil cylinder; a horizontal piston rod is arranged in the mounting seat, one end of the piston rod is connected with the oil cylinder, and the other end of the piston rod penetrates through the piston hole and is connected with the material pushing device;
a sealing device is arranged in the mounting seat and sleeved on the piston rod; the sealing device comprises a sealing sleeve gland, a sealing sleeve and a welding flange which are arranged in sequence; an annular first groove is formed in the inner wall of one end, facing the sealing sleeve gland, of the sealing sleeve, and an annular connecting plate is arranged on the outer wall of one end, facing the welding flange, of the sealing sleeve; the sealing sleeve gland comprises a first annular cover and a second annular cover, the outer diameter of the first annular cover is larger than that of the second annular cover, the second annular cover extends into the first groove, and the side wall of the first annular cover is fixedly connected with the side wall of the sealing sleeve through a first bolt; the connecting plate is fixedly connected with the welding flange through a second bolt; the welding flange is welded with the end plate;
a plurality of graphite packing is arranged between the second annular cover and the inner wall of the first groove, an annular second groove is arranged on the inner wall of the second annular cover, and an annular first guide belt is arranged in the second groove; two annular third grooves are formed in the inner wall of the seal sleeve, and annular lip-shaped seal rings are arranged in the third grooves; two annular fourth grooves are arranged between the two third grooves, and annular second guide belts are arranged in the fourth grooves; an annular fifth groove is formed in one end, close to the welding flange, of the sealing sleeve, an annular metal shell is arranged in the fifth groove, an annular elastic scraping strip and a metal scraping strip are arranged in the metal shell, and the metal scraping strip is closer to the welding flange than the elastic scraping strip; an annular sixth groove is formed in the outer side face of the connecting plate, and an end face sealing ring is arranged in the sixth groove.
Furthermore, the tail end of the piston rod is provided with a pin shaft which is vertically connected with the piston rod, the pushing device is provided with a vertical long hole, and the pin shaft penetrates through the long hole.
Furthermore, the inner walls of the graphite packing, the first guide belt, the lip-shaped sealing ring, the second guide belt, the elastic scraping strip and the metal scraping strip are tightly attached to the piston rod.
Furthermore, the inner diameters of the elastic scraping strip and the metal scraping strip are smaller than the inner diameter of the piston rod, so that the tail ends of the elastic scraping strip and the metal scraping strip are tightly attached to the piston rod.
Furthermore, the sealing sleeve is provided with a lubricating oil nozzle.
Further, the diameter of the piston rod is 60-500 mm.
The utility model has the beneficial effects that: the utility model uses the welding flange of the matched welding type, can avoid the eccentric wear condition of the piston rod and the seal sleeve caused by the non-standard equipment installation; the metal combined dust ring is used for replacing a common dust ring, the first metal dust scraping lip is used for removing solid dangerous wastes such as slurry, asphalt, oil sludge, metal fragments and ice particles which are firmly attached to the piston rod, the second elastic dust scraping lip improves the overall scraping effect, namely fine particles and dangerous wastes such as water are reliably scraped, the service cycle of the overall sealing element is longer, and the replacement cost and the maintenance cost of the sealing element are reduced.
Drawings
Fig. 1 is an installation schematic diagram of the special axial reciprocating sealing device for the hazardous waste bin.
Fig. 2 is a sectional view of the axial reciprocating sealing device specially used for the hazardous waste bin of the present invention.
Fig. 3 is a sectional view of an elastic scraping strip and a metal scraping strip of the axial reciprocating sealing device specially used for the hazardous waste bin.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1, the utility model provides an axial reciprocating sealing device specially used for a hazardous waste bin, which comprises a bin 1 and a driving device 2 positioned outside the bottom of the bin 1.
As shown in fig. 1, a pushing device 3 is arranged on the inner side of the bottom of the storage bin 1, and the pushing device 3 can reciprocate along the horizontal direction. A piston hole 11 is arranged on the side wall of the storage bin 1 corresponding to the pushing device 3.
As shown in fig. 2, the driving device 2 includes a mount 21 and an oil cylinder 22. The mounting seat 21 is in a horizontal cylindrical shape, one end of the mounting seat is provided with an annular end plate 23, and the mounting seat is welded with the side wall of the storage bin 1 through the end plate 23, so that the piston hole 11 is positioned in the end plate 23, and the other end of the mounting seat is fixedly connected with the oil cylinder 22. The installation seat 21 is internally provided with a horizontal piston rod 4, and the diameter of the piston rod 4 is 60-500 mm. One end of the piston rod 4 is connected with the oil cylinder 22, and the other end passes through the piston hole 11 and is connected with the pushing device 3. Specifically, the end of the piston rod 4 is provided with a pin 41 vertically connected to the piston rod 4, the pushing device 3 is provided with a vertical slot 31, and the pin 41 is inserted into the slot 31.
As shown in fig. 1 and 2, a sealing device 5 is disposed in the mounting seat 21, and the sealing device 5 is sleeved on the piston rod 4. The sealing device 5 comprises a sealing sleeve gland 51, a sealing sleeve 52 and a welding flange 53 which are arranged in sequence. An annular first groove 521 is formed in the inner wall of one end, facing the sealing sleeve gland 51, of the sealing sleeve 52, and an annular connecting plate 522 is formed in the outer wall of one end, facing the welding flange 53, of the sealing sleeve 52. The sealing gland cover 51 comprises a first annular cover 511 and a second annular cover 512, the outer diameter of the first annular cover 511 is larger than that of the second annular cover 512, the second annular cover 512 extends into the first groove 521, and the side wall of the first annular cover 511 is fixedly connected with the side wall of the sealing gland 52 through a first bolt 513. The connecting plate 522 is fixedly connected to the welding flange 53 by the second bolts 531. The welding flange 53 is welded with the end plate 23, and the sealing sleeve 52 is provided with a lubricating oil nozzle 523 for automatically or manually filling lubricating grease, so that lubrication is provided for the piston rod and the sealing element, and the service life of the sealing is prolonged.
As shown in fig. 2, a plurality of graphite packing sets 6 are disposed between the second annular cover 512 and the inner wall of the first groove 521, an annular second groove 514 is disposed on the inner wall of the second annular cover 512, and an annular first guide belt 515 is disposed in the second groove 514. The inner wall of the sealing sleeve 52 is provided with two annular third grooves 524, and an annular lip-shaped sealing ring 525 is arranged in the third grooves 524. Two annular fourth grooves 526 are formed between the two third grooves 524, and an annular second guide belt 527 is arranged in the fourth grooves 526. As shown in fig. 2 and 3, an annular fifth groove 528 is formed at one end of the sealing sleeve 52 close to the welding flange 53, an annular metal casing 529 is disposed in the fifth groove 528, an annular elastic scraping strip 5291 and a metal scraping strip 5292 are disposed in the metal casing 529, and the metal scraping strip 5292 is closer to the welding flange 53 than the elastic scraping strip 5291. An annular sixth groove 5221 is formed in the outer side surface of the connecting plate 522, and a face seal ring 5222 is disposed in the sixth groove 5221. The graphite packing 6, the first guide strip 515, the lip seal 525, the second guide strip 527, the elastic wiper strip 5291, and the metal wiper strip 5292 are closely attached to the inner wall of the piston rod 4. The inner diameters of the elastic wiper strips 5291 and the metal wiper strips 5292 are smaller than the inner diameter of the piston rod 4, so that the ends of the elastic wiper strips 5291 and the metal wiper strips 5292 are closely attached to the piston rod 4.
When the sealing device is installed, the sealing device 5 is installed on the piston rod, the position of the sealing device 5 on the piston rod 4 is adjusted, the welding flange 53 and the installation seat 21 are fixed in a spot welding mode, and the piston rod 4 is fully welded after reciprocating for a plurality of times without problems; finally the screws of gland 52 and gland cover 51 are tightened. The seal gland 51 mainly functions to ensure the installation of the graphite packing 6, and ensures the guidance of the piston rod 4 through the graphite packing 6 and the first guide belt 515 on the seal gland 51, thereby preventing the piston rod 4 from being scratched in the gland installation process. The metal scraping strip 5292 has a large effective deformation amount, has certain guidance, can be self-adapted to the deformation of the piston rod 4, and ensures that the piston rod 4 has a scraping effect after being deformed. The metal wiper strip 5292 is made of copper alloy, the elastic wiper strip 5291 is made of fluororubber, and the metal shell 529 is made of a corrosion-resistant stainless steel sheet.
The working principle of the utility model is as follows: when the piston rod drives the pushing device to reciprocate, solid hazardous wastes such as hazardous wastes, oil sludge, chemical residues, asphalt, metal debris, ice particles and the like which are stuck on the piston rod are firstly scraped by the metal scraping strip, other liquid or fine solids are scraped by the elastic scraping strip, the two lip seals and the graphite packing at the back are used as supplements for sealing, and the effective sealing pressure is more than 21 Mpa.
The utility model uses the welding flange of the matched welding type, can avoid the eccentric wear condition of the piston rod and the seal sleeve caused by the non-standard equipment installation; the dustproof scraper strip of using metal, elasticity combination replaces ordinary dust ring, and first metal scraper strip is used for removing solid danger such as firm mud, pitch, fatlute, metal debris, the ice granule attached to on the piston rod useless, and the elasticity scraper strip has improved whole effect of scraping, tiny granule promptly, danger such as moisture is useless by reliable striking off, guarantees that whole sealing member life cycle is longer, reduces to change sealed expense and maintenance cost.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. An axial reciprocating motion sealing device special for a hazardous waste bin is characterized by comprising a bin and a driving device positioned outside the bottom of the bin;
the inner side of the bottom of the storage bin is provided with a material pushing device which can reciprocate along the horizontal direction; a piston hole is arranged on the side wall of the storage bin corresponding to the pushing device;
the driving device comprises a mounting seat and an oil cylinder; the mounting seat is in a horizontal cylindrical shape, one end of the mounting seat is provided with an annular end plate, the mounting seat is welded with the side wall of the storage bin through the end plate, the piston hole is positioned in the end plate, and the other end of the mounting seat is fixedly connected with the oil cylinder; a horizontal piston rod is arranged in the mounting seat, one end of the piston rod is connected with the oil cylinder, and the other end of the piston rod penetrates through the piston hole and is connected with the material pushing device;
a sealing device is arranged in the mounting seat and sleeved on the piston rod; the sealing device comprises a sealing sleeve gland, a sealing sleeve and a welding flange which are arranged in sequence; an annular first groove is formed in the inner wall of one end, facing the sealing sleeve gland, of the sealing sleeve, and an annular connecting plate is arranged on the outer wall of one end, facing the welding flange, of the sealing sleeve; the sealing sleeve gland comprises a first annular cover and a second annular cover, the outer diameter of the first annular cover is larger than that of the second annular cover, the second annular cover extends into the first groove, and the side wall of the first annular cover is fixedly connected with the side wall of the sealing sleeve through a first bolt; the connecting plate is fixedly connected with the welding flange through a second bolt; the welding flange is welded with the end plate;
a plurality of graphite packing is arranged between the second annular cover and the inner wall of the first groove, an annular second groove is arranged on the inner wall of the second annular cover, and an annular first guide belt is arranged in the second groove; two annular third grooves are formed in the inner wall of the seal sleeve, and annular lip-shaped seal rings are arranged in the third grooves; two annular fourth grooves are arranged between the two third grooves, and annular second guide belts are arranged in the fourth grooves; an annular fifth groove is formed in one end, close to the welding flange, of the sealing sleeve, an annular metal shell is arranged in the fifth groove, an annular elastic scraping strip and a metal scraping strip are arranged in the metal shell, and the metal scraping strip is closer to the welding flange than the elastic scraping strip; an annular sixth groove is formed in the outer side face of the connecting plate, and an end face sealing ring is arranged in the sixth groove.
2. The special axial reciprocating sealing device for the hazardous waste bin according to claim 1, wherein: the tail end of the piston rod is provided with a pin shaft which is vertically connected with the piston rod, the pushing device is provided with a vertical long hole, and the pin shaft penetrates through the long hole.
3. The special axial reciprocating sealing device for the hazardous waste bin according to claim 1 or 2, wherein: the inner walls of the graphite packing, the first guide belt, the lip-shaped sealing ring, the second guide belt, the elastic scraping strip and the metal scraping strip are tightly attached to the piston rod.
4. The special axial reciprocating sealing device for the hazardous waste bin according to claim 1 or 2, wherein: the inner diameters of the elastic scraping strips and the metal scraping strips are smaller than the inner diameter of the piston rod, so that the tail ends of the elastic scraping strips and the metal scraping strips are tightly attached to the piston rod.
5. The special axial reciprocating sealing device for the hazardous waste bin according to claim 1 or 2, wherein: the seal cover is provided with a lubricating oil nozzle.
6. The special axial reciprocating sealing device for the hazardous waste bin according to claim 1 or 2, wherein: the diameter of the piston rod is 60-500 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121930514.9U CN215720824U (en) | 2021-08-17 | 2021-08-17 | Dedicated axial reciprocating motion sealing device of danger waste bin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121930514.9U CN215720824U (en) | 2021-08-17 | 2021-08-17 | Dedicated axial reciprocating motion sealing device of danger waste bin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215720824U true CN215720824U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121930514.9U Active CN215720824U (en) | 2021-08-17 | 2021-08-17 | Dedicated axial reciprocating motion sealing device of danger waste bin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215720824U (en) |
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2021
- 2021-08-17 CN CN202121930514.9U patent/CN215720824U/en active Active
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