CN204493721U - Medium-speed pulverizer pull rod seal device - Google Patents
Medium-speed pulverizer pull rod seal device Download PDFInfo
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- CN204493721U CN204493721U CN201520167542.8U CN201520167542U CN204493721U CN 204493721 U CN204493721 U CN 204493721U CN 201520167542 U CN201520167542 U CN 201520167542U CN 204493721 U CN204493721 U CN 204493721U
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Abstract
The utility model relates to a kind of mechanical seal device, particularly be medium-speed pulverizer pull rod seal device.This medium-speed pulverizer pull rod seal device comprises upper sealing device and lower sealing device, upper sealing device middle concave cutting ferrule is bolted on pull bar, outer seal sleeve to be contained in outside inner seal sleeve by bolt sleeve and cutting ferrule is fixed on the groove of spill cutting ferrule, outer seal sleeve innermost insert has outer seal ring, inner seal sleeve is contained on pull bar by bolt sleeve, inner seal sleeve innermost insert has inner seal ring, and stuffing box gland card orchid is bolted on sealing seat; In lower sealing device, lower seal gum cover is by lower seal flange screw in lower sleeve gasket tube chamber chamber interior, forms elastic packing.In the utility model, outer seal sleeve forms double sealing structure, and good sealing effect, does not produce wearing and tearing to pull bar.
Description
Technical field
The utility model relates to a kind of mechanical seal device, particularly be a kind of medium-speed pulverizer pull rod seal device.
Background technique
Medium-speed pulverizer is attached equipment important in thermal power plant, it is unit preparation of fuel equipment, medium-speed pulverizer pull bar is the important component part of deceleration loading device, the sealing surface of existing coal mill draw bar sealing device mainly adopts steel to contact, make the gap that pull bar and stuffing box gland keep certain, sealing air keeps the blast of more than 2kpa, make the inner coal dust of medium-speed pulverizer can not enter tie-rod sealing inside, but due to pull bar axial-radial motion when coal pulverizer runs frequent, stuffing box gland and pull bar are steel and constantly wear and tear, gap constantly increases, sealing air blast is reduced to below 2kpa gradually, finally lose effective sealing effect, in lower sealing device, sealed core also adopts steel, inside be provided with filling slot, packing is filled with in filling slot, but come off because the softer pressurized of packing quality is easily out of shape, and pull bar moves up and down repeatedly, frequently to make packing wear and tear very fast, maintenance workload is large, finally cause the leakage powder that leaks out.
Existing medium-speed pulverizer pull bar upper sealing device as shown in Figure 1.
In Fig. 1, tie-rod sealing adopts steel slipper seal ring structure, sliding ring (14) point two-part are sleeved on pull bar (1), and by limiting stopper (15), sliding ring (14) is limited on medium-speed pulverizer tie-rod sealing seat (16), when equipment runs, pull bar (1) moves axially in the endoporus of sliding ring (14), sliding ring (14) is with pull bar (1) radial motion in limiting stopper (15) simultaneously, its shortcoming is: (one) pull bar (1) and sliding ring (14) are steel, easily wearing and tearing are produced to pull bar (1), (2) between slipper seal block (14) and limiting stopper (15), easily long-pending assorted iron is cut or coal dust, make sliding ring (14) radial movable dumb, equipment makes the other strength of pull bar (1) in running, and easily causes pull bar (1) to rupture.
In Fig. 1, pull bar lower seal sealed core (13) adopts steel, inside is filled with packing, during equipment fortune, pull bar (1) moves up and down along sealed core inside, sealed core (13) inner packing and pull bar (1) contact friction, because packing is soft, as easy as rolling off a log wearing and tearing come off, and gap increases, and loses sealability.
Summary of the invention
In order to the problem that the sealing and pull bar that solve medium-speed pulverizer pull bar position are worn and torn, provide one thoroughly can solve pull bar wearing and tearing, and improve a kind of seal arrangement of the sealability of pull bar.
The utility model solves the technological scheme that its technical problem adopts:
Medium-speed pulverizer pull rod seal device comprises upper sealing device and lower sealing device.
Upper sealing device comprises: spill cutting ferrule (2), bolt (3), outer seal sleeve (4), outer seal ring (5), inner seal sleeve (6), inner seal ring (7), inner seal sleeve card orchid (8), bolt (9), be characterized in: spill cutting ferrule (2), outer seal sleeve (4), outer seal ring (5), inner seal sleeve (6), inner seal ring (7), interior big envelope card orchid (8) are two-part composition, spill cutting ferrule (2) is fixed on pull bar (1) by bolt (3), outer seal sleeve (4) is contained in inner seal sleeve (6) outside by bolt sleeve and cutting ferrule is fixed on the groove of spill cutting ferrule (2), outer seal sleeve (4) innermost insert has outer seal ring (5), inner seal sleeve (6) is contained on pull bar (1) by bolt sleeve, inner seal sleeve (6) innermost insert has inner seal ring (7), stuffing box gland card orchid (8) is fixed on sealing seat (16) by bolt (9), and inner seal sleeve (6) is limited on sealed base (16).
Lower sealing device comprises: lower seal gum cover (10), lower seal sleeve pipe (11), lower seal flange (12); Be characterized in: lower seal gum cover (10) is pressed on lower seal sleeve pipe (11) chamber interior by lower seal flange (12) and forms elastic packing.
The beneficial effects of the utility model are as follows: (one) good sealing effect: in upper sealing device, inner seal sleeve and outer seal sleeve form double sealing structure, good seal performance; (2) working life of energy extending pull rod: inner seal ring and lower seal gum cover adopt flexible sealing, can not produce wearing and tearing, improve the working life of pull bar and seal arrangement to pull bar; (3) configuration design is reasonable: outer seal sleeve top is taper, is unfavorable for the accumulation of coal dust and foreign material.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described further.
Fig. 1 is existing medium-speed pulverizer pull rod seal device structural representation;
In Fig. 1: 1 pull bar, 13 sealed cores, 14 slip limiting stoppers, 15 tie-rod sealing seats.
Fig. 2 is the utility model structural representation;
In Fig. 2: 1 pull bar, 2 spill cutting ferrules, 3 bolts, 4 outer seal sleeves, 5 outer seal rings, 6 inner seal sleeves, 7 inner seal rings, 8 stuffing box gland cards are blue, 9 bolts, 10 lower seal gum covers, 11 lower seal sleeve pipes, 12 lower seal flanges.
Embodiment
Be applied to by the utility model in existing seal arrangement, embodiment as shown in drawings.
In medium-speed pulverizer, remove black box (14) (15) and lower seal assembly (13) in former pull rod seal device, leave tie-rod sealing seat (16), lower seal sleeve pipe (11) and lower seal flange (12), to install parts of the present utility model.
Be applied to by this programme in existing seal arrangement, embodiment is as shown in accompanying drawing two;
The enforcement of upper sealing device: first inner seal ring (7) is embedded in inner seal sleeve (6) respectively, by bolt, inner seal sleeve (6) is sleeved on pull bar (1), stuffing box gland card orchid (8) is arranged on tie-rod sealing seat (15) by bolt (9), spill cutting ferrule (2) is fastened on the upper relevant position of pull bar (1) by bolt (3), inner seal ring (5) is embedded in outer seal sleeve (4), by bolt by fastening for outer seal sleeve (4) and be sleeved on inner seal sleeve (6) outside.
The enforcement of lower sealing device: first lower seal gum cover (10) is sleeved on pull bar (1), is pressed in lower seal sleeve pipe (11) by lower seal flange (12).
Claims (4)
1. a medium-speed pulverizer pull rod seal device, comprise upper sealing device and lower sealing device, it is characterized in that, upper sealing device comprises: spill cutting ferrule (2), bolt (3), outer seal sleeve (4), outer seal ring (5), inner seal sleeve (6), inner seal ring (7), inner seal sleeve card orchid (8), bolt (9), spill cutting ferrule (2) is fixed on pull bar (1) by bolt (3), outer seal sleeve (4) is contained in inner seal sleeve (6) outside by bolt sleeve and cutting ferrule is fixed on the groove of spill cutting ferrule (2), outer seal sleeve (4) innermost insert has outer seal ring (5), inner seal sleeve (6) is contained on pull bar (1) by bolt sleeve, inner seal sleeve (6) innermost insert has inner seal ring (7), stuffing box gland card orchid (8) is fixed on sealing seat (16) by bolt (9), and inner seal sleeve (6) is limited on sealed base, lower sealing device comprises: lower seal gum cover (10), lower seal sleeve pipe (11), lower seal flange (12), lower seal gum cover (10) is pressed on lower seal sleeve pipe (11) chamber interior by lower seal flange (12), and lower seal gum cover (10) forms elastic packing after installing.
2. medium-speed pulverizer pull rod seal device according to claim 1, it is characterized in that: in upper sealing device, outer seal sleeve (4) is contained in inner seal sleeve (6) outside by bolt sleeve and cutting ferrule is fixed on the groove of spill cutting ferrule (2), and outer seal sleeve (4) innermost insert has outer seal ring (5).
3. medium-speed pulverizer pull rod seal device according to claim 1, it is characterized in that: in upper sealing device, inner seal sleeve (6) is contained on pull bar (1) by bolt sleeve, inner seal sleeve (6) innermost insert has inner seal ring (7), stuffing box gland card orchid (8) is fixed on sealing seat (16) by bolt (9), and is limited on sealed base (16) by inner seal sleeve (6).
4. medium-speed pulverizer pull rod seal device according to claim 1, it is characterized in that: in lower sealing device, lower seal gum cover (10) is pressed on lower seal sleeve pipe (11) chamber interior by lower seal flange (12), and lower seal gum cover (10) forms elastic packing after installing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520167542.8U CN204493721U (en) | 2015-03-19 | 2015-03-19 | Medium-speed pulverizer pull rod seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520167542.8U CN204493721U (en) | 2015-03-19 | 2015-03-19 | Medium-speed pulverizer pull rod seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204493721U true CN204493721U (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520167542.8U Active CN204493721U (en) | 2015-03-19 | 2015-03-19 | Medium-speed pulverizer pull rod seal device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204493721U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999208A (en) * | 2018-01-08 | 2018-05-08 | 安徽齐盈电力设备科技有限公司 | A kind of coal mill draw bar sealing device |
| CN113958713A (en) * | 2021-10-29 | 2022-01-21 | 华能秦煤瑞金发电有限责任公司 | Hydraulic pull rod sealing device of medium-speed coal mill |
-
2015
- 2015-03-19 CN CN201520167542.8U patent/CN204493721U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999208A (en) * | 2018-01-08 | 2018-05-08 | 安徽齐盈电力设备科技有限公司 | A kind of coal mill draw bar sealing device |
| CN113958713A (en) * | 2021-10-29 | 2022-01-21 | 华能秦煤瑞金发电有限责任公司 | Hydraulic pull rod sealing device of medium-speed coal mill |
| CN113958713B (en) * | 2021-10-29 | 2023-10-10 | 华能秦煤瑞金发电有限责任公司 | Hydraulic pull rod sealing device of medium-speed coal mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |