CN204025687U - A kind of seal arrangement of medium-speed pulverizer support - Google Patents
A kind of seal arrangement of medium-speed pulverizer support Download PDFInfo
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- CN204025687U CN204025687U CN201420456162.1U CN201420456162U CN204025687U CN 204025687 U CN204025687 U CN 204025687U CN 201420456162 U CN201420456162 U CN 201420456162U CN 204025687 U CN204025687 U CN 204025687U
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- stepped shaft
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- speed pulverizer
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Abstract
The utility model relates to component of machine field, particularly relates to the seal arrangement of a kind of medium-speed pulverizer support used in thermal power plant.On the drive plate that sealing device is arranged on medium-speed pulverizer and upper connecting ring, for sealing medium-speed pulverizer support, comprise rotating ring, stationary ring, adjustment ring, rotating ring is fixedly mounted on drive plate, stationary ring to be fixedly mounted on connecting ring and to be positioned at the below of stationary ring, the lower end of adjustment ring is connected with stationary ring and is positioned at the outside of stationary ring, the outer surface of rotating ring is stepped shaft shape, the internal surface of adjustment ring upper end is also stepped shaft shape, the stepped shaft mating shapes of the stepped shaft shape of the outer surface of rotating ring and the internal surface of adjustment ring upper end, exhaust outlet gap is formed between the stepped shaft shape of the stepped shaft shape of the outer surface of rotating ring and the internal surface of adjustment ring upper end.Beneficial effect is: equipment mechanism is simple, easy to assembly, it is cost-saving to save time, and adjusting play is easy to operate, safeguards simple, also effectively prevents dust from revealing.
Description
Technical field
The utility model relates to component of machine field, particularly relates to the seal arrangement of a kind of medium-speed pulverizer support used in thermal power plant.
Background technique
Traditional common support Seal Design structure is simply thin, operation a period of time gap that causes easy to wear increases, and sealing blast can not be ensured.Because sealing blast is less than First air blast, pressure reduction is not enough, and time one length must cause support seal leakage coal dust or leak out.The sealing configuration of former medium-speed pulverizer support is too simple, only has the sealed mouth of one top-bottom cross, be easy to wearing and tearing increase, cause dust granules to be easy to enter in sealing air chamber, the wear extent between carbon seal ring and drive plate is caused to increase, reduce the life cycle of carbon ring, and irreversible wearing and tearing are caused to drive plate, finally cause coal pulverizer support bottom dust granules to leak in a large number, affect coal pulverizer normally to run, and cause very large pollution to carrying out production strictly in line with rules and regulations.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of seal arrangement of medium-speed pulverizer support, overcomes the defect that sealing effect is poor, working life is short, sealing adjustment is inconvenient of traditional medium-speed pulverizer support.
The technological scheme that the utility model solves the problems of the technologies described above is as follows: a kind of seal arrangement of medium-speed pulverizer support, on the drive plate being arranged on medium-speed pulverizer and upper connecting ring, for sealing medium-speed pulverizer support, comprise rotating ring, stationary ring, adjustment ring, described rotating ring is fixedly mounted on described drive plate, described stationary ring to be fixedly mounted on described upper connecting ring and to be positioned at the below of described stationary ring, the lower end of described adjustment ring is connected with described stationary ring and is positioned at the outside of described stationary ring, the outer surface of described rotating ring is stepped shaft shape, the internal surface of described adjustment ring upper end is also stepped shaft shape, the stepped shaft mating shapes of the stepped shaft shape of the outer surface of described rotating ring and the internal surface of described adjustment ring upper end, exhaust outlet gap is formed between the stepped shaft shape of the stepped shaft shape of the outer surface of described rotating ring and the internal surface of described adjustment ring upper end.
The beneficial effects of the utility model are: equipment mechanism is simple, easy to assembly, assembling saves time, cost-saving, adjusts air port gap operating convenient, safeguards simple, can also effectively prevent dust from revealing.
On the basis of technique scheme, the utility model can also do following improvement.
Further, described stationary ring is provided with tapped hole, described adjustment ring is provided with U-shaped hole, and described adjustment ring and described stationary ring are fixed together through described U-shaped hole and described tapped hole successively by screw, and the internal surface of described adjustment ring lower end and the intimate of described stationary ring are fitted.
The beneficial effect of above-mentioned further scheme is adopted to be: arrange U-shaped hole and can adjust the position of adjustment ring thus the distance adjustment realized between exhaust outlet gap by screw, easy to adjust, simple to operate, easy to maintenance, cost is low.
Further, the width range in described exhaust outlet gap is 0.2mm ~ 1mm.
The beneficial effect of above-mentioned further scheme is adopted to be: suitable gap width is conducive to ensureing the blast of sealed chamber, can effectively prevent dust from revealing simultaneously.
Accompanying drawing explanation
Fig. 1 is the scheme of installation of the seal arrangement of a kind of medium-speed pulverizer support of the utility model;
Fig. 2 is the close-up schematic view of A in Fig. 1 of the seal arrangement of a kind of medium-speed pulverizer support of the utility model.
In accompanying drawing, the list of parts representated by each label is as follows:
1, drive plate, 2, rotating ring, 3, adjustment ring, 4, stationary ring, 5, carbon ring, 6, sealed chamber, 7, upper connecting ring, 8, exhaust outlet gap, 9, screw.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1 and Figure 2, on the drive plate 1 that this device is arranged on medium-speed pulverizer and upper connecting ring 7, for sealing medium-speed pulverizer support, this device comprises rotating ring 2, stationary ring 4, adjustment ring 3, the bottom that rotating ring 2 is fixedly mounted on drive plate 1 is protruded downwards, and rotating ring 2 followed by drive plate 1 and rotates together.Stationary ring 4 to be fixedly mounted on connecting ring 7 and to be positioned at the below of stationary ring 4, and stationary ring 4 is protruding upward.The lower end of adjustment ring 3 is connected with stationary ring 4 and is positioned at the outside of stationary ring 4, the outer surface of rotating ring 2 is stepped shaft shape, the internal surface of adjustment ring 3 upper end is also stepped shaft shape, the stepped shaft mating shapes of the stepped shaft shape of the outer surface of rotating ring 2 and the internal surface of adjustment ring 3 upper end, forms exhaust outlet gap 8 between the stepped shaft shape of the stepped shaft shape of the outer surface of rotating ring 2 and the internal surface of adjustment ring 3 upper end.Outlet gap 8, in stepped shaft, can effectively be stopped external dust and enter, and also can prevent inner coal dust dust granules from revealing simultaneously.Traditional seal arrangement is easy to allow extraneous dust granules enter in sealed chamber 6, the wear extent between carbon ring 5 and drive plate 1 is caused to increase, device of the present utility model adopts the exhaust outlet gap 8 of stepped shaft shape can effectively prevent extraneous dust granules from entering in sealed chamber 6, thus increase the working life of drive plate 1, carbon ring 5, cost-saving.
Stationary ring 4 is provided with tapped hole, adjustment ring 3 is provided with U-shaped hole, be connected by screw 9 between adjustment ring 3 with stationary ring 4, adjustment ring 3 and stationary ring 4 are fixed together through behind U-shaped hole and tapped hole by screw 9 successively, the internal surface of adjustment ring 3 lower end and the intimate of stationary ring 4 are fitted, and prevent dust granules from revealing.Sealing device is after long-play, when exhaust outlet gap 8 increases, Unscrewed screw 9 can be passed through, screw 9 is moved up and down in U-shaped hole, thus adjustment adjustment ring 3 keeps the width range in exhaust outlet gap 8 between 0.2mm ~ 1mm, ensure the pressure in sealed chamber 6, reach minimizing maintenance duration simultaneously, reduce maintenance cost, adjust effect simply and easily.In the process of adjustment adjustment ring 3, the outer surface of stationary ring 4 will fit tightly with U-shaped hole all the time, prevents external dust particle from entering in device from U-shaped hole.
Its working procedure is: rotating ring 2 rotates along with drive plate 1, step-like exhaust outlet gap 8 is formed between rotating ring 2 and adjustment ring 3, when running, long to cause after wearing and tearing can adjusting screw 9, screw 9 is moved up and down on the U-shaped hole of adjustment ring 3, thus realize the adjustment of exhaust outlet gap 8 gap length between adjustment ring 3 and rotating ring 2, effectively can control the width in exhaust outlet gap 8.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. the seal arrangement of a medium-speed pulverizer support, on the drive plate (1) being arranged on medium-speed pulverizer and upper connecting ring (7), for sealing medium-speed pulverizer support, it is characterized in that, comprise rotating ring (2), stationary ring (4), adjustment ring (3), described rotating ring (2) is fixedly mounted on described drive plate (1), described stationary ring (4) is fixedly mounted on described upper connecting ring (7) and goes up and the below being positioned at described stationary ring (4), the lower end of described adjustment ring (3) is connected with described stationary ring (4) and is positioned at the outside of described stationary ring (4), the outer surface of described rotating ring (2) is stepped shaft shape, the internal surface of described adjustment ring (3) upper end is also stepped shaft shape, the stepped shaft mating shapes of the stepped shaft shape of the outer surface of described rotating ring (2) and the internal surface of described adjustment ring (3) upper end, exhaust outlet gap (8) is formed between the stepped shaft shape of the stepped shaft shape of the outer surface of described rotating ring (2) and the internal surface of described adjustment ring (3) upper end.
2. the seal arrangement of a kind of medium-speed pulverizer support according to claim 1, it is characterized in that, described stationary ring (4) is provided with tapped hole, described adjustment ring (3) is provided with U-shaped hole, described adjustment ring (3) is fixed together through described U-shaped hole and described tapped hole by screw (9) successively with described stationary ring (4), and the internal surface of described adjustment ring (3) lower end and the intimate of described stationary ring (4) are fitted.
3. the seal arrangement of a kind of medium-speed pulverizer support according to claim 1 and 2, is characterized in that, the width range of described exhaust outlet gap (8) is 0.2mm ~ 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420456162.1U CN204025687U (en) | 2014-08-13 | 2014-08-13 | A kind of seal arrangement of medium-speed pulverizer support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420456162.1U CN204025687U (en) | 2014-08-13 | 2014-08-13 | A kind of seal arrangement of medium-speed pulverizer support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204025687U true CN204025687U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420456162.1U Active CN204025687U (en) | 2014-08-13 | 2014-08-13 | A kind of seal arrangement of medium-speed pulverizer support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113208462A (en) * | 2020-01-21 | 2021-08-06 | 刘锦松 | Bean grinding device |
-
2014
- 2014-08-13 CN CN201420456162.1U patent/CN204025687U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113208462A (en) * | 2020-01-21 | 2021-08-06 | 刘锦松 | Bean grinding device |
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