CN204267776U - A kind of coal powder metering rotary seal valve - Google Patents
A kind of coal powder metering rotary seal valve Download PDFInfo
- Publication number
- CN204267776U CN204267776U CN201420683981.XU CN201420683981U CN204267776U CN 204267776 U CN204267776 U CN 204267776U CN 201420683981 U CN201420683981 U CN 201420683981U CN 204267776 U CN204267776 U CN 204267776U
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- bearing support
- friction disk
- rotating cylinder
- bearing
- rotor
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- Withdrawn - After Issue
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Abstract
The utility model provides a kind of coal powder metering rotary seal valve, comprises bearing support, bearing, rotor, housing, between rotor and bearing support, arrange multiple sealing means simultaneously, prevents coal dust from leaking; Rotating cylinder is provided with seal ring; Be provided with friction disk in the both sides of rotating cylinder, friction disk is pressed on rotating cylinder both sides by hold down gag; The end face of friction disk and bearing support forms a small-sized cavity, in cavity, pass into pressurized air, forms sealing gland.The beneficial effects of the utility model are: the working life 1) substantially increasing equipment, the time of the technique normal operation of guarantee.2) effectively control the leakage of coal dust, take into account environmental protection and safety.3) whole compact equipment, is convenient to quick-detachment.4) design this expendable part of friction disk, can renew upon wear, effectively improve the service life of equipment, cost-saving.
Description
Technical field
The utility model relates to a kind of feedway being convenient to coal powder metering, particularly relates to a kind of coal powder metering rotary seal valve.
Background technique
Coal dust is the important fuel source of in industrial production, is widely used in the fields such as steel-making, lime calcining, generating.Wherein in lime production field, in order to ensure the normal reaction of kiln sodalime, need the delivery volume of coal dust continuous, stable and controlled.In order to ensure above technological requirement, coal powder metering rotary seal valve will have following characteristics:
1) control coal dust to carry with the flow velocity of technological requirement.
2) valve two ends are maintained with different pressure.
3) as explosion-proof isolation mounting.
4) as frpf isolation mounting.
Current domestic a lot of coal powder metering system all adopts common rotation sealing gland, and its maximum problem is exactly the leakage of coal dust, and service time, very short just generation leaked powder phenomenon.Owing to not having good solution, having a lot of factory to take is not leak powder to very serious stage with regard to the mode do not processed, and causes coal powder metering system station seriously polluted like this.A large amount of coal dusts is leaked in factory building or directly in air, causes serious pollution and potential safety hazard.The blast that a lot of factory occurs and fire accident are all that the coal dust that process is not leaked in time causes, and its source is all because the leakage of the valves such as metering valve causes.
It is that characteristic due to coal dust causes that the valve of pulverized coal conveying is not easy to seal, first is that coal dust is very thin, be the identical electric charge of band substantially between pulverized coal particle after grinding machine grinds, cause between particle and particle and mutually repel, this makes the mobility of coal dust very good.Second is coal dust complicated component, and after coal dust placement loses electric charge in 4-6 hour, certain pressure will make coal dust be aggregated to and form hard tablet together, causes a lot of Sealing to damage.Broken ring so repeatedly, the equipment causing coal dust to carry is very difficult to sealing.
Comprehensive above factor, in order to many-sided requirements such as environmental protection, safety and technology stabilities, we design a kind of Novel rotary seal valve of comprehensive three kinds of seal approach, for pulverized coal conveying.Its principle one reduces the gap between rotor and housing, and make gap even.Two is pass to high-pressure air outside rotor, coal dust is blown to valve inside, avoids leaking.Three is add lubricating grease in packing seal, increases coal dust resistance, forms seal section more closely, and inner coal dust is not leaked.
Summary of the invention
The purpose of this utility model is to provide a kind of coal powder metering rotary seal valve, can provide the rotary seal valve of stable, controlled pulverized coal flow for coal powder metering system.This rotary seal valve can extend coal powder metering system normal running time effectively, reduces maintenance cost, improves on-the-spot working environment, effectively reduces the possibility that environmental pollution and fire, explosive accident occur.
For achieving the above object, the utility model realizes by the following technical solutions:
A kind of coal powder metering rotary seal valve, comprise bearing support, bearing, rotor, housing, bearing support is fixedly connected with housing, and bearing is arranged on bearing support, and rotor is arranged in housing, and rotor is welded by axle and rotating cylinder, and the two ends of axle are arranged in bearing; Rotating cylinder is provided with seal ring; Be provided with friction disk in the both sides of rotating cylinder, friction disk is pressed on rotating cylinder both sides by hold down gag; The end face of friction disk and bearing support forms a small-sized cavity, in cavity, pass into pressurized air, forms sealing gland.
Described hold down gag comprises spring, guide rod, O type circle, holding down bolt, double nut, set screw nut, set screw nut is welded on bearing support, holding down bolt is screwed onto in set screw nut, through hole is established in holding down bolt, guide rod is installed in through-holes, and spring fitting is between through hole and guide rod, and O type circle is installed on the guide bar, friction disk is withstood in one end of guide rod, and the other end of guide rod is spirally connected double nut.
Compared with prior art, the beneficial effects of the utility model are:
1) substantially increase the working life of equipment, ensure that the time that technique runs well.
2) effectively control the leakage of coal dust, take into account environmental protection and safety.
3) whole compact equipment, is convenient to quick-detachment.
4) design this expendable part of friction disk, can renew upon wear, effectively improve the service life of equipment, cost-saving.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of a kind of coal powder metering rotary seal valve of the utility model;
Fig. 2 is the A-A direction view of Fig. 1;
In figure: 1-motor 2-speed reducer 3-coupling 4-bearing 5-bearing support 6-seal ring 7-rotating cylinder 8-axle 9-housing 10-friction disk 11-spring 12-stuffing box packing 13-hold-down ring 14-guide rod 15-O type circle 16-holding down bolt 17-double nut 18-set screw nut 19-bolt 20-packing seal oil hole 21-sealing gland hole
Embodiment
Below in conjunction with Figure of description, the utility model is described in detail, but it should be noted that enforcement of the present utility model is not limited to following mode of execution.
As shown in Figure 1-2, a kind of coal powder metering rotary seal valve, comprise bearing support 5, bearing 4, rotor, housing 9, bearing support 5 is fixedly connected with housing 9, and bearing 4 is arranged on bearing support 5, and rotor is arranged in housing 9, rotor is welded by axle 8 and rotating cylinder 7, the two ends of axle 8 are arranged in bearing 4, arrange multiple sealing means simultaneously, prevent coal dust from leaking between rotor and bearing support 5; Rotating cylinder 7 is provided with seal ring 6; Be provided with friction disk 10 in the both sides of rotating cylinder 7, friction disk 10 is pressed on rotating cylinder 7 both sides by hold down gag; The end face of friction disk 10 and bearing support 5 forms a small-sized cavity, in cavity, pass into pressurized air, forms sealing gland.
The end face of bearing support 5 is provided with sealing gland hole 21, for passing into pressurized air.
Rotor is welded by rotating cylinder 7 and axle 8, and welding ensures tightness, ensures that coal dust can not be bled in rotating cylinder 7.
Rotating cylinder 7 two ends are provided with minor groove, and seal ring 6 is arranged in minor groove, and seal ring 6 is less than the gap of rotating cylinder 7 end face and housing 9 with the gap of housing 9, reduce the gap between rotor and housing 9 further, improve sealability.
Rotating cylinder 7 bi-side add friction disk 10, are compressed by the spring 11 of hold down gag.Friction disk 10 and the gap of housing 9 are less than seal ring 6 and the gap of housing 9, further play seal action.
Hold down gag comprises spring 11, guide rod 14, O type circle 15, holding down bolt 16, double nut 17, set screw nut 18, set screw nut 18 is welded on bearing support 5, holding down bolt 16 is screwed onto in set screw nut 18, the through hole that two sections of internal diameters are different is established in holding down bolt 16, guide rod 14 is installed in through-holes, between the larger hole of internal diameter and guide rod 14, spring 11 is installed, the end diameter that guide rod 14 stretches out spring 11 increases to identical with spring 11 external diameter, friction disk 10 is withstood in one end that guide rod 14 diameter is large, and the other end of guide rod 14 is spirally connected double nut 17.
Holding down bolt 16 peripheral hardware screw thread, by screwing holding down bolt 16, can regulate holding down bolt 16 to stretch out the length of set screw nut 18, in order to Regulation spring 11 by guide rod 14 pairs of friction disk 10 applied pressures.Double nut 17 oneself can be locked on the screw thread of guide rod 14, in order to the position of stationary positioned bolt 16, prevents because vibrations cause holding down bolt 16 displacement, thus changes the pressure of spring 11.
In the utility model, elongated by bearing support 5, discharge a part of space, install stuffing box packing 12 between axle 8 and bearing support 5, compress with hold-down ring 13, hold-down ring 13 is fixed on bearing support 5 by bolt 19.Bearing support 5 arranges packing seal oil hole 20, by packing seal oil hole 20, lubricating grease is added in stuffing box packing 12, further strengthens the effect of sealing.
Bearing 4 is rolling bearing, is arranged on bearing support 5 by external for bearing 4, coal dust can be avoided to enter bearing 4 inner.
Bearing 4 is stretched out in one end of axle 8, and be connected by the main shaft of coupling 3 with speed reducer 2, speed reducer 2 connects motor 1.During work, speed reducer 2 is driven to be rotated in housing 9 by coupling 3 rotor driven by motor 1.
Claims (2)
1. a coal powder metering rotary seal valve, comprise bearing support, bearing, rotor, housing, bearing support is fixedly connected with housing, bearing is arranged on bearing support, rotor is arranged in housing, and rotor is welded by axle and rotating cylinder, and the two ends of axle are arranged in bearing, it is characterized in that, rotating cylinder is provided with seal ring; Be provided with friction disk in the both sides of rotating cylinder, friction disk is pressed on rotating cylinder both sides by hold down gag; The end face of friction disk and bearing support forms a small-sized cavity, in cavity, pass into pressurized air, forms sealing gland.
2. a kind of coal powder metering rotary seal valve according to claim 1, it is characterized in that, described hold down gag comprises spring, guide rod, O type circle, holding down bolt, double nut, set screw nut, set screw nut is welded on bearing support, holding down bolt is screwed onto in set screw nut, through hole is established in holding down bolt, guide rod is installed in through-holes, spring fitting is between through hole and guide rod, O type circle is installed on the guide bar, friction disk is withstood in one end of guide rod, and the other end of guide rod is spirally connected double nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683981.XU CN204267776U (en) | 2014-11-14 | 2014-11-14 | A kind of coal powder metering rotary seal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683981.XU CN204267776U (en) | 2014-11-14 | 2014-11-14 | A kind of coal powder metering rotary seal valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267776U true CN204267776U (en) | 2015-04-15 |
Family
ID=52802646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420683981.XU Withdrawn - After Issue CN204267776U (en) | 2014-11-14 | 2014-11-14 | A kind of coal powder metering rotary seal valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267776U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405916A (en) * | 2014-11-14 | 2015-03-11 | 中冶焦耐工程技术有限公司 | Rotating sealing valve for coal powder metering |
-
2014
- 2014-11-14 CN CN201420683981.XU patent/CN204267776U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405916A (en) * | 2014-11-14 | 2015-03-11 | 中冶焦耐工程技术有限公司 | Rotating sealing valve for coal powder metering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150415 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |