CN204553837U - The antiwind stern shaft seal gland of corrosion resistant - Google Patents
The antiwind stern shaft seal gland of corrosion resistant Download PDFInfo
- Publication number
- CN204553837U CN204553837U CN201520150643.4U CN201520150643U CN204553837U CN 204553837 U CN204553837 U CN 204553837U CN 201520150643 U CN201520150643 U CN 201520150643U CN 204553837 U CN204553837 U CN 204553837U
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- cutter
- seal
- sealing seat
- stern
- antiwind
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Abstract
The utility model discloses the antiwind stern shaft seal gland of a kind of corrosion resistant, comprise stern tube shaft lining, stern tube shaft lining is set with seal body and sealing seat, sealing seat is fixedly connected in seal body, sealing seat is equipped with seal ring, described seal body is installed with sacrificial metal block; Described sealing seat is installed with cutter, and this cutter is made up of cutter body and cutter head, the cutter body in cyclic structure is provided with some overhanging cutter heads, is equipped with cutter cutting edge at the top of this cutter head and both sides.Circumferentially be installed with some sacrificial metal blocks at the lugs position of seal body, this sacrificial metal block is zinc slug or magnesium slug.Sealing device not only has good antiseptic property, long service life, and can effectively prevent the foreign material such as fishing net to be wound around, and is applicable in the stern shaft seal structure of all kinds of naval vessels, boats and ships.
Description
Technical field
The utility model relates to a kind of screw shaft of ship seal arrangement, particularly relates to the stern shaft seal gland with lip seal.
Background technique
Stern tube shaft is through the axle that stern tube stretches out ship stern, and its one end connects propeller cavitation, and the other end connects coupling or gear-box is connected with motor.In order to prevent outside water along stern tube shaft flow in ship and lubricant oil to external leakage, tight sealing must be carried out, to guarantee safety of ship, Effec-tive Function by stern shaft seal gland to the stern tube shaft through body place, cabin.
Stern shaft seal gland is positioned at underwater, its operating conditions is comparatively severe, it should stand the erosion of the corrosive environments such as seawater, again easily by the winding of the foreign material such as fishing line, fishing net, be easy to cause bad seals, not only cause outside water and silt to enter stern tube, and stern tube shaft lubricant oil is leaked, polluted water environment on the one hand, turn increases the inoperative wearing and tearing of stern tube shaft and bearing on the other hand, shortens the working life of bearing.According to statistics, the improper boats and ships in the current world are suspended repairing, and 20%-80% is belong to screw shaft of ship bad seals to cause, and wherein the overwhelming majority is then caused by fishing net is wound around.
Existing stern shaft seal gland mainly comprises three kinds of structural types such as lip type rubber seal, packing box seal and end face seal, and wherein lip type rubber sealing structure is simple, long service life, and sealing followability is good, has preferably axial and radial shock-absorbing capacity.But lip seal is more easily subject to the damage of twister, thus have a strong impact on its sealability, even make its sealability lose.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of winding that effectively can prevent the twisters such as fishing net, the antiwind stern shaft seal gland of corrosion resistant that can effectively stop seal arrangement metal body to corrode again.
In order to solve the problems of the technologies described above, the antiwind stern shaft seal gland of corrosion resistant of the present utility model, comprise stern tube shaft lining, stern tube shaft lining is set with seal body and sealing seat, sealing seat is fixedly connected in seal body, sealing seat is equipped with seal ring, described seal body is installed with sacrificial metal block; Described sealing seat is installed with cutter, and this cutter is made up of cutter body and cutter head, the cutter body in cyclic structure is provided with some overhanging cutter heads, is equipped with cutter cutting edge at the top of this cutter head and both sides.
In said structure; owing to being installed with some sacrificial metal blocks in seal body; there is metal compared with strong reducing property as protected level; can avoid or reduce the corrosion of metal sealing body; thus make seal arrangement have the erosion of the corrosive environments such as stronger resistant to sea water, also make seal arrangement have stable, lasting sealability.Again owing to being installed with cutter on sealing seat, this cutter includes cutter body and overhanging cutter head, can along with the rotation of propeller after adopting cutter, cutter directly cuts off the twisters such as fishing net, fishing line or rope, make to cut broken twister and cannot form winding to propeller cavitation, it also avoid the destruction of twister to seal arrangement.
A kind of preferred implementation of the present utility model, is circumferentially installed with some sacrificial metal blocks at the lugs position of seal body, and this sacrificial metal block is zinc slug or magnesium slug.Along seal body sacrificial metal block circumferentially, uniform anti-corrosion protection can be implemented to seal arrangement preferably.Block structure is convenient to be bolted in seal body or change simultaneously, easy and simple to handle.
Another preferred implementation of the present utility model, described sealing seat comprises three seat ring bodies be mutually permanently connected, and each seat ring body is to there being a seal ring.Described seal ring is lip type rubber seal, and lip spring is housed outside the lip of seal ring.The three road lip seals of this Structure composing, effectively can stop external dynamic sea or silt to enter stern tube, can prevent leaking of stern tube shaft lubricant oil again.
Another preferred implementation of the present utility model, top cutter cutting edge and the side cutter cutting edge of described cutter head are the arcuate blade edge of a knife.This structure has better cutting effect, can from the broken twister of multi-faceted accurate cutting.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the antiwind stern shaft seal gland of the utility model corrosion resistant is described further.
Fig. 1 is the structural representation of a kind of embodiment of the antiwind stern shaft seal gland of the utility model corrosion resistant;
Fig. 2 is the left view of Fig. 1 illustrated embodiment;
Fig. 3 is the plan view of cutter in Fig. 1 illustrated embodiment;
Fig. 4 is B-B cross section view of cutter shown in Fig. 3;
Fig. 5 is the left view of cutter shown in Fig. 3.
In figure, 1-stern tube shaft lining, 2-cutter, 3-block material ring, 4-block material block, 5-sealing seat, 6-seal ring, 7-sacrificial metal block, 8-seal body, 9-back-up ring, 10-O RunddichtringO, 2.1-cutter body, 2.2-cutter head.
Embodiment
In the antiwind stern shaft seal gland of the corrosion resistant shown in Fig. 1, Fig. 2, on stern tube shaft, fixed cover is equipped with stern tube shaft lining 1, is provided with O RunddichtringO 10 and back-up ring 9 in one end of stern tube shaft lining 1; On stern tube shaft lining 1, seal body 8 and sealing seat 5 are equipped with in sealing.The lugs position of seal body 8 is circumferentially installed with 10 pieces of sacrificial metal blocks 7 by connecting bolt, and this sacrificial metal block 7 is spelter, and certain sacrificial metal block 7 can also be MAG block, zinc alloy block or magnesium alloy belong to block.Sealing seat 5 is made up of three interconnective seat ring body things, and sealing seat 5 is also fixedly connected in seal body 8 by connecting bolt.The equal correspondence of each seat ring body of sealing seat 5 is pressed with a seal ring 6, and seal ring 6 adopts lip type rubber seal, is set with lip spring outside the lip of each lip type rubber seal.
On seat ring body outside sealing seat 5, be installed with cutter 2 by connecting bolt, the outer end of this seat ring body is that block material ring 3 and block material block 4 are fixedly housed.As shown in Fig. 3, Fig. 4, Fig. 5, cutter 2 is made up of cutter body 2.1 and cutter head 2.2, cutter body 2.1 is in cyclic structure, and be provided with overhanging cutter head 2.2 in one end of cutter body 2.1 round body, the quantity of cutter head 2.2 then should be carried out selection according to the physical dimension of seal arrangement and be determined.Dissecting all curved angle of throat mouth of side cutter cutting edge of edge and dual-side thereof in the top of cutter head 2.2, is beneficial to like this to be formed to grip twister to cut off, and cuts off efficiency to improve.
Claims (5)
1. the antiwind stern shaft seal gland of corrosion resistant, comprise stern tube shaft lining (1), stern tube shaft lining (1) is set with seal body (8) and sealing seat (5), sealing seat (5) is fixedly connected in seal body (8), sealing seat (5) is equipped with seal ring (6), it is characterized in that: in described seal body (8), be installed with sacrificial metal block (7); Described sealing seat (5) is installed with cutter (2), this cutter (2) is made up of cutter body (2.1) and cutter head (2.2), cutter body (2.1) in cyclic structure is provided with some overhanging cutter heads (2.2), is equipped with cutter cutting edge at the top of this cutter head (2.2) and both sides.
2. the antiwind stern shaft seal gland of corrosion resistant according to claim 1, is characterized in that: be circumferentially installed with some sacrificial metal blocks (7) at the lugs position of seal body (8), and this sacrificial metal block (7) is zinc slug or magnesium slug.
3. the antiwind stern shaft seal gland of corrosion resistant according to claim 1, is characterized in that: described sealing seat (5) comprises three seat ring bodies be mutually permanently connected, and each seat ring body is to there being a seal ring (6).
4. the antiwind stern shaft seal gland of the corrosion resistant according to claim 1 or 3, is characterized in that: described seal ring (6) is lip type rubber seal, and lip spring is housed outside the lip of seal ring (6).
5. the antiwind stern shaft seal gland of corrosion resistant according to claim 1, is characterized in that: top cutter cutting edge and the side cutter cutting edge of described cutter head (2.2) are the arcuate blade edge of a knife.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520150643.4U CN204553837U (en) | 2015-03-17 | 2015-03-17 | The antiwind stern shaft seal gland of corrosion resistant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520150643.4U CN204553837U (en) | 2015-03-17 | 2015-03-17 | The antiwind stern shaft seal gland of corrosion resistant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553837U true CN204553837U (en) | 2015-08-12 |
Family
ID=53828952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520150643.4U Active CN204553837U (en) | 2015-03-17 | 2015-03-17 | The antiwind stern shaft seal gland of corrosion resistant |
Country Status (1)
| Country | Link |
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| CN (1) | CN204553837U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106458308A (en) * | 2014-05-13 | 2017-02-22 | Abb公司 | Slewing seal arrangement for a propulsion unit |
| CN107150772A (en) * | 2017-07-24 | 2017-09-12 | 江龙船艇科技股份有限公司 | The removable anti-fishing net casing structure of stainless steel |
-
2015
- 2015-03-17 CN CN201520150643.4U patent/CN204553837U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106458308A (en) * | 2014-05-13 | 2017-02-22 | Abb公司 | Slewing seal arrangement for a propulsion unit |
| CN106458308B (en) * | 2014-05-13 | 2018-11-30 | Abb公司 | Rotary seal for propulsion unit |
| CN107150772A (en) * | 2017-07-24 | 2017-09-12 | 江龙船艇科技股份有限公司 | The removable anti-fishing net casing structure of stainless steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |