CN212347934U - Drum-shaped filter screen rotating main shaft - Google Patents
Drum-shaped filter screen rotating main shaft Download PDFInfo
- Publication number
- CN212347934U CN212347934U CN202020436091.4U CN202020436091U CN212347934U CN 212347934 U CN212347934 U CN 212347934U CN 202020436091 U CN202020436091 U CN 202020436091U CN 212347934 U CN212347934 U CN 212347934U
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- bolt
- main shaft
- drum
- filter screen
- shaped filter
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Abstract
The utility model provides a drum-shaped filter screen rotates main shaft, is applied to drum-shaped filter screen water intaking filtration equipment, includes main shaft pole, bolt, rubber seal ring, nut, and the main shaft pole vertical cross section is the narrow symmetrical structure in the middle of the both ends are wide, and the welding has a bolt on the both ends side of main shaft pole respectively, the bolt post of bolt outwards, bolt head terminal surface and the both ends side welded connection of main shaft pole combine, and rubber seal ring, nut have outwards installed in proper order by the lining on the bolt post, and the bolt helmet cover is equipped with in the screw thread post outside of bolt, is equipped with the screw thread that connects with the bolt post and join in marriage. The rotating main shaft has the advantages of good compressive strength, long service life and good sealing performance.
Description
Technical Field
The utility model relates to a water intaking filter equipment of nuclear power plant, especially drum-shaped filter screen water intaking filtration equipment.
Background
The drum filter screen is used as one of main devices of a circulating water filtering system of a nuclear power plant, is used for filtering suspended dirt and marine organisms in seawater and providing filtered seawater for a circulating water pump so as to ensure the normal operation of a related cold source system in a power station. When the existing drum-shaped filter screen runs, the water level of the outer side of the drum-shaped filter screen is higher than the water level of the inner side of the drum-shaped filter screen, the drum-shaped filter screen is subjected to the action of buoyancy, but the buoyancy is far greater than the gravity when the maximum design pressure difference exists, a rotating main shaft of the drum-shaped filter screen is bent, the drum-shaped filter screen stops rotating, and the normal operation of nuclear power unit equipment is directly influenced.
Disclosure of Invention
The utility model discloses the purpose is to current drum-shaped filter screen equipment rotation main shaft's not enough, provides a drum-shaped filter screen rotation main shaft that compressive strength is good, long service life, sealing performance is good.
Embodied as such, a drum screen rotating spindle, comprising: the bolt comprises a main shaft rod, a bolt, rubber sealing gaskets and a nut, wherein the vertical section of the main shaft rod is of a symmetrical structure with two wide ends and a narrow middle part, bolts are welded on the side surfaces of the two ends of the main shaft rod respectively, a bolt column of the bolt faces outwards, the end surface of a bolt head is welded and combined with the side surfaces of the two ends of the main shaft rod, the rubber sealing gaskets and the nut are installed on the bolt column from inside to outside in sequence, and a gap is reserved between the bolt head and the rubber sealing gaskets and used for a filter screen.
Furthermore, the section of a main shaft rod of a rotating main shaft of the drum-shaped filter screen is in a concave arc shape with two wide ends and a narrow middle part, so that the bending resistance of the main shaft can be effectively improved, and the use and maintenance period of equipment can be prolonged.
Further, the inner ring radius of the rubber sealing washer is slightly smaller than the thread diameter of the thread column of the bolt, so that the sealing performance of the drum-shaped filter screen is ensured.
Furthermore, a bolt protective cap sleeve is arranged on the outer side of a threaded column of the bolt, threads matched with the bolt column are arranged in the bolt protective cap sleeve, the bolt protective cap sleeve is screwed on the bolt column from the outermost end of the bolt column, the opening end of the bolt protective cap sleeve is tightly abutted to the nut, the nut and the rubber sealing washer can be fastened for the second time, and the sealing performance of the joint of the rotating shaft and the filter screen is further enhanced.
The utility model has the advantages that:
1. the concave arc structure with two wide ends and narrow middle is adopted to increase the bending resistance of the main shaft, and the overhaul period of the equipment can be effectively prolonged.
2. And the tightness of the filter screen is ensured by utilizing two layers of reinforcement of the clamping bolt and the protective cap.
Drawings
Fig. 1 is a schematic structural diagram of the utility model.
In the figure: 1 main shaft rod, 2 bolt heads, 3 threaded columns, 4 rubber sealing gaskets, 5 nuts and 6 bolt protective cap sleeves.
Detailed Description
Example 1:
as shown in fig. 1, specifically implemented in this way, a drum filter screen rotating spindle comprises a spindle rod 1, a bolt 2, a rubber sealing washer 4 and a nut 5, wherein a vertical section of the spindle rod 1 is in a symmetrical structure with two wide ends and a narrow middle part, the two end sides of the spindle rod 1 are respectively welded with the bolt 2, a bolt column 3 of the bolt 2 faces outwards, the end face of the bolt head is welded and combined with the two end sides of the spindle rod 1, the bolt column 3 is sequentially provided with the rubber sealing washer 4 and the nut 5 from inside to outside, the inner ring radius of the rubber sealing washer 4 is slightly smaller than the thread diameter of a thread column 3 of the bolt 2, and a gap is formed between the bolt head and the rubber sealing washer 4 and used for clamping a filter screen on the; the bolt 2 is provided with a bolt protective cap sleeve 6 outside the threaded column 3, a bolt protective cap sleeve 6 is internally provided with threads matched with the bolt column 3, the bolt protective cap sleeve 6 is screwed on the bolt column 3 from the outermost end of the bolt column 3, the open end of the bolt protective cap sleeve tightly supports the nut 5, and the nut 5 and the rubber sealing washer 4 can be fastened for the second time.
The section of a main shaft rod 1 of a rotating main shaft of the drum-shaped filter screen is in a concave arc shape with two wide ends and a narrow middle part, so that the bending resistance of the main shaft can be effectively improved, and the use and maintenance period of equipment can be prolonged; the nut 5 and the bolt protective cap sleeve 6 can clamp the hoop filter screen for two times, so that the sealing performance of the whole system is enhanced.
Claims (4)
1. The utility model provides a drum-shaped filter screen rotates main shaft, includes main shaft pole, bolt, rubber seal ring, nut, its characterized in that main shaft pole vertical cross section is the narrow symmetrical structure in the middle of the both ends are wide, has welded a bolt respectively on the both ends side of main shaft pole, the bolt post of bolt is outwards, and bolt head end face and the both ends side welded joint of main shaft pole, from inside to outside installs rubber seal ring, nut in proper order on the bolt post, has the space between bolt head and the rubber seal ring.
2. A drum screen rotating spindle according to claim 1, characterized in that: the section of a main shaft rod of a rotating main shaft of the drum-shaped filter screen is in a concave arc shape with two wide ends and a narrow middle part.
3. A drum screen rotating spindle according to claim 1, characterized in that: the radius of the inner ring of the rubber sealing washer is slightly smaller than the thread diameter of the thread column of the bolt.
4. A drum screen rotating spindle according to claim 1, characterized in that: the bolt is provided with a bolt protective cap sleeve outside the threaded column, the bolt protective cap sleeve is internally provided with threads matched with the bolt column, the bolt protective cap sleeve is screwed on the bolt column from the outermost end of the bolt column, and the opening end of the bolt protective cap sleeve is tightly abutted to the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020436091.4U CN212347934U (en) | 2020-03-31 | 2020-03-31 | Drum-shaped filter screen rotating main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020436091.4U CN212347934U (en) | 2020-03-31 | 2020-03-31 | Drum-shaped filter screen rotating main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212347934U true CN212347934U (en) | 2021-01-15 |
Family
ID=74148448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020436091.4U Active CN212347934U (en) | 2020-03-31 | 2020-03-31 | Drum-shaped filter screen rotating main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212347934U (en) |
-
2020
- 2020-03-31 CN CN202020436091.4U patent/CN212347934U/en active Active
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