CN202597193U - Oil seal system for boric acid recirculating pump - Google Patents
Oil seal system for boric acid recirculating pump Download PDFInfo
- Publication number
- CN202597193U CN202597193U CN 201220118743 CN201220118743U CN202597193U CN 202597193 U CN202597193 U CN 202597193U CN 201220118743 CN201220118743 CN 201220118743 CN 201220118743 U CN201220118743 U CN 201220118743U CN 202597193 U CN202597193 U CN 202597193U
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- China
- Prior art keywords
- oil
- boss
- dish
- boric acid
- baffle disc
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses an oil seal system for a boric acid recirculating pump in the field of nuclear power equipment. The oil seal system is sleeved on a pump shaft and comprises an oil blocking disk, a bearing cover and a dustproof disk. The bearing cover comprises a cover seat, wherein the top face of the cover seat is provided with a ring-shaped cover and a boss located in the ring-shaped cover, the cover seat, the ring-shaped cover and the boss are concentric, and an axial through hole which axially penetrates through the cover seat and the boss is arranged in the center of the bearing cover. The dustproof disk comprises a disk seat and a disk shaft which are concentric. The oil blocking disk and the dustproof disk are sequentially sleeved on the pump shaft, and the bearing cover is sleeved on the outer wall of the disk shaft through the axial through hole. A flange is arranged on the top face of the boss along the circumference of the boss, and an edge cover is arranged on the bottom face of the oil blocking disk along the circumference of the oil blocking disk, and therefore an oil path collecting chamber is formed among the oil blocking disk, the dustproof disk and the bearing cover.
Description
Technical field
The utility model relates to a kind of boric acid recirculation pump oil seal system that is used in nuclear power equipment field.
Background technique
The boric acid recirculating pump is a kind of recirculating pump that often uses in the nuclear power station; The effect of boric acid recirculating pump is: at the nuclear power station run duration; For preventing that boric acid from injecting the boric acid crystallization in the case; By the boric acid recirculating pump BAS that boric acid injects in the case is continuously circulated, guarantee BAS concentration and temperature constant.The another one effect of this pump is to accomplish the first topping up that boric acid injects case.
Pump shaft and bearing support are set on the boric acid recirculating pump, must be lubricated between said pump shaft and the bearing support, lubricating system commonly used at present is a thin oil lubricant.An oil storage tank promptly is set on said boric acid recirculating pump, utilizes the lubricant oil that is stored in the oil storage tank to be lubricated.In order to prevent the leakage of lubricant oil, be provided with the oil sealing system on the boric acid recirculating pump.This oil sealing system comprises oil baffle disc, bearing cap and dustproof dish.Said oil baffle disc and the socket successively on pump shaft of dustproof dish, said bearing cap is socketed on the excircle of said dustproof dish dish axle.Traditional oil sealing system is provided with outside framework oil seal between said dustproof dish and said pump shaft.Yet the spring force in the outside framework oil seal is easy to generate the seize phenomenon when excessive, causes said outside framework oil seal and said pump shaft to rub, and then causes the pump shaft heating; Spring force can cause the excesssive gap between said oil baffle disc and said pump shaft again when not enough, and water clock can take place lubricant oil.Meanwhile, outside framework oil seal is set and solves the problem of lubricant oil from the clearance leakage between bearing cap and the dustproof dish.
The model utility content
The purpose of the utility model is in order to overcome the deficiency of existing technology, a kind of boric acid recirculation pump oil seal system that is used for to be provided, and it can effectively solve the technical problem of boric acid recirculating pump oil leak.
A kind of technological scheme that realizes above-mentioned purpose is: a kind of boric acid recirculation pump oil seal system that is used for, and said oil sealing system is socketed on the pump shaft, comprising: oil baffle disc, bearing cap and dustproof dish;
Said bearing cap comprises the boss that on cage, the said cage end face circular cowling is set and is positioned at said circular cowling; Said cage, said circular cowling and said boss are concentric, and the center of said bearing cap is provided with the axial hole that axially runs through said cage and said boss;
Said dustproof dish comprises dish seat and dish axle, and said dish seat and said dish axle are concentric;
Said oil baffle disc and the socket successively on said pump shaft of said dustproof dish, said bearing cap are socketed on the outer wall of said dish axle through said axial hole;
On the end face of said boss, the circumference of the said boss in edge is provided with flange, and the circumference of the said oil baffle disc in upper edge, bottom surface of said oil baffle disc is provided with the limit cover, makes and forms the oil circuit collection cavity between said oil baffle disc, said dustproof dish and the said bearing cap.
Further, on the hole wall of said axial hole, mechanical seal is set.
Further, between said dustproof dish and said pump shaft, O-ring seals is set.
Further, the circular groove around said axial hole is set on the bottom surface of said cage, on the end face of said dish seat, annular boss, said circular groove and the mutual clamping of said annular boss around said dish axle is set.
Further, the chamfering that centers on said oil baffle disc circumference is set on the end face of said oil baffle disc.
Adopted a kind of technological scheme that is used for boric acid recirculation pump oil seal system of the utility model; Promptly on the end face of said bearing cap boss; Circumference along said boss is provided with flange; The circumference of the said oil baffle disc in upper edge, bottom surface of said oil baffle disc is provided with the limit cover, makes the technological scheme that forms the oil circuit collection cavity between said oil baffle disc, said dustproof dish and the said bearing cap.Its technique effect is: the lubricant oil that splashes on the oil baffle disc can be introduced into the oil circuit collection cavity, and the oil pocket through the loop finally is back in the oil storage chamber of said boric acid recirculating pump again, thereby prevents that effectively lubricant oil is from the clearance leakage between bearing cap and the dustproof dish.
Description of drawings
Fig. 1 is a kind of structural representation that is used for boric acid recirculation pump oil seal system of the utility model;
Fig. 2 is the enlarged diagram of the A part of Fig. 1.
Embodiment
See also Fig. 1 and Fig. 2,,, and combine accompanying drawing at length to explain below through concrete embodiment in order to understand the technological scheme of the utility model better:
See also Fig. 1 and Fig. 2, on the boric acid recirculating pump, adopt thin oil lubricant to come in order to prevent oil leak, the oil sealing system to be set on the boric acid recirculating pump being lubricated between pump shaft 4 and the bearing support 7.Said oil sealing system is socketed on the pump shaft 4 of said boric acid recirculating pump.A kind of boric acid recirculation pump oil seal system that is used in the present embodiment comprises: oil baffle disc 1, bearing cap 2 and dustproof dish 3;
Said bearing cap 2 comprises cage 21; Circular cowling 22 and the boss 23 that is positioned at said circular cowling 22 are set on said cage 21 end faces; Said cage 21, said circular cowling 22 and said boss 23 are concentric; On the end face of said boss 23, the circumference of the said boss 23 in edge is provided with flange 231, also is provided with the axial hole 24 that axially runs through said cage 21 and boss 23 at the center of said bearing cap 2.
Said dustproof dish comprises dish seat 31 and dish axle 32, and said dish seat 31 is concentric with said dish axle 32;
Said oil baffle disc 1 comprises: on the bottom surface of said oil baffle disc 1, the circumference of the said oil baffle disc 1 in edge is provided with limit cover 11,
Said oil baffle disc 1 and the socket successively on pump shaft 4 of said dustproof dish 3, said bearing cap 2 are socketed on the outer wall of said dish axle 32 through said axial hole 24;
At this moment, said bearing support 7 has formed the loop oil pocket 6 of said boric acid recirculating pump between the said circular cowling 22 of said oil baffle disc 1 and said bearing cap 2.
Through the cooperation of said limit cover 11 and said flange 231, make between said oil baffle disc 1, said dustproof dish 3 and the said bearing cap 2 and form oil circuit collection cavity 5.
The purpose of design is like this: splash lubricant oil on the said oil baffle disc 1 can be earlier the tangential of the said oil baffle disc 1 in edge; Get into said oil circuit collection cavity 5; Be back to again in the said loop oil pocket 6; Lubricant oil in the loop oil pocket 6 finally is back in the oil storage chamber of said boric acid recirculating pump, thereby prevents that effectively lubricant oil is from the clearance leakage between said bearing cap 2 and the said dustproof dish 3.
On the hole wall of the said axial hole 24 of said bearing cap 2 axial mechanical seal 241 is set; This mechanical seal 241 belongs to mazy type mechanical seal, and the purpose of design is like this: so just can prevent effectively further that lubricant oil is from the clearance leakage between said bearing cap 2 and the said dustproof dish 3.
Between said dustproof dish 3 and the said pump shaft 4 O-ring seals 41 is set, is used for replacing traditional outside framework oil seal.The purpose of design is like this: can prevent that the interior spring force of outside framework oil seal is easy to generate the seize phenomenon when excessive; And not enough said oil baffle disc 3 that is caused of the spring force in the outside framework oil seal and the excesssive gap between the said pump shaft 4; Cause oil leak, thereby guarantee the safe operation of boric acid recirculating pump.
In addition; The end face of said oil baffle disc 3 is provided with the chamfering 12 around said oil baffle disc 3 circumference; The purpose of design is like this: said oil baffle disc 3 is through the turning disk technology of successively carrying out, and the card edge of said disk is carried out the bending technique processing of bending obtains, through said bending technique; When the bottom surface of said oil baffle disc 1 forms limit cover 11, on the end face of said oil baffle disc, just formed said chamfering 12.Consider the intensity of said oil baffle disc 1 and convenience and the installation strength that said oil baffle disc is installed, the angle between said chamfering 12 and said oil baffle disc are axial is that 14 degree are to 16 degree.
In addition, also be provided with axial bolts hole 25 on the cage 21 of bearing cap 2, through being arranged at the bolt on the said axial bolts hole 25, said bearing cap 2 is fixed with the whole air cooling bearing support of said boric acid recirculating pump.
The dish seat 31 of said dustproof dish 3 is provided with radial bolts hole 33, and said dustproof dish 3 and said pump shaft 4 is radially fixing.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the utility model; And be not with the qualification of doing the utility model; As long as in the connotation scope of the utility model, all will drop in claims scope of the utility model the above embodiment's variation, modification.
Claims (5)
1. one kind is used for boric acid recirculation pump oil seal system, and said oil sealing system is socketed on the pump shaft (4), comprising: oil baffle disc (1), bearing cap (2) and dustproof dish (3);
Said bearing cap (2) comprises cage (21); Circular cowling (22) is set on said cage (21) end face and is positioned at the boss (23) of said circular cowling (22); Said cage (21), said circular cowling (22) and said boss (23) are concentric, and the center of said bearing cap (2) is provided with the axial hole (24) that axially runs through said cage (21) and said boss (23);
Said dustproof dish (3) comprises dish seat (31) and dish axle (32), and said dish seat (31) and said dish axle (32) are concentric;
Said oil baffle disc (1) and said dustproof dish (3) socket successively on said pump shaft (4), said bearing cap (2) are socketed on the outer wall of said dish axle (32) through said axial hole (24); It is characterized in that:
On the end face of said boss (23); Circumference along said boss (23) is provided with flange (231); The circumference of the said oil baffle disc in upper edge, bottom surface (1) of said oil baffle disc (1) is provided with limit cover (11), makes and forms oil circuit collection cavity (5) between said oil baffle disc (1), said dustproof dish (3) and the said bearing cap (2).
2. a kind of boric acid recirculation pump oil seal system that is used for according to claim 1 is characterized in that: mechanical seal (241) is set on the hole wall of said axial hole (24).
3. a kind of boric acid recirculation pump oil seal system that is used for according to claim 1 and 2 is characterized in that: between said dustproof dish (3) and said pump shaft (4), O-ring seals (41) is set.
4. a kind of boric acid recirculation pump oil seal system that is used for according to claim 1 and 2; It is characterized in that: the circular groove (211) around said axial hole (24) is set on the bottom surface of said cage (21); On the end face of said dish seat (31); Setting is around the annular boss (311) of said dish axle (32), the mutual clamping of said circular groove (211) and said annular boss (311).
5. a kind of boric acid recirculation pump oil seal system that is used for according to claim 1 and 2 is characterized in that: the chamfering (12) around said oil baffle disc (1) circumference is set on the end face of said oil baffle disc (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118743 CN202597193U (en) | 2012-03-27 | 2012-03-27 | Oil seal system for boric acid recirculating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118743 CN202597193U (en) | 2012-03-27 | 2012-03-27 | Oil seal system for boric acid recirculating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597193U true CN202597193U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220118743 Expired - Lifetime CN202597193U (en) | 2012-03-27 | 2012-03-27 | Oil seal system for boric acid recirculating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597193U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606515A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Oil seal system for boric acid recirculation pump |
-
2012
- 2012-03-27 CN CN 201220118743 patent/CN202597193U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606515A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Oil seal system for boric acid recirculation pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
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| CX01 | Expiry of patent term |