CN216554563U - Spiral sealing device of vertical long-shaft molten salt pump - Google Patents
Spiral sealing device of vertical long-shaft molten salt pump Download PDFInfo
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- CN216554563U CN216554563U CN202123221142.5U CN202123221142U CN216554563U CN 216554563 U CN216554563 U CN 216554563U CN 202123221142 U CN202123221142 U CN 202123221142U CN 216554563 U CN216554563 U CN 216554563U
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- molten salt
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- threaded sleeve
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Abstract
The utility model discloses a spiral sealing device of a vertical long-shaft molten salt pump, which comprises a pump tank, wherein a top cover is fixed at the top of the pump tank, an external protective cylinder is arranged at the top of the top cover, a top motor is fixed at the top of the external protective cylinder, the output end of the top motor is connected with a pump body shaft, the pump body shaft is movably arranged inside the external protective cylinder, a bottom threaded sleeve is arranged at the bottom inside the external protective cylinder, a positive thread groove is carved inside the bottom threaded sleeve, and the positive thread groove is matched with the pump body shaft. According to the utility model, the regular thread groove is coiled in the bottom threaded sleeve, the regular thread grooves are provided with a plurality of grooves, and the outer part of the pump body shaft is matched with the bottom threaded sleeve, so that the pump body shaft and the regular thread grooves in the bottom threaded sleeve move mutually through the rotation of the pump body shaft, and the regular thread grooves have downward pushing force, so that molten salt is pressed into the pump tank, and sealing is performed.
Description
Technical Field
The utility model relates to a sealing structure of a molten salt pump, in particular to a spiral sealing device of a vertical long-shaft molten salt pump.
Background
Molten salt pump a pump for delivering high temperature metal salts. The conveying device is used for conveying high-temperature nitrate, nitrite, ionic membrane caustic soda and the like, and is also widely used in chemical processes of melamine, salt preparation, alkali preparation, urea and the like. The temperature of the transport medium is generally between 400 ℃ and 460 ℃ and the viscosity is less than 0.3 pas. The device is also used in solar power generation and molten salt reactors. And a sealing structure is required to be used in the molten salt pump, so that the molten salt pump is sealed.
Nowadays, such kind of device on the market is various, can satisfy people's user demand basically, but still has certain problem, but, the spiral sealing device of current vertical major axis molten salt pump generally seals the effect not good, and the practicality is not strong.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a spiral sealing device of a vertical long-shaft molten salt pump to solve the problem of poor sealing effect in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a spiral sealing device of vertical major axis molten salt pump, includes the pump jar, pump jar top is fixed with the top cap, the top of top cap is provided with outside protection section of thick bamboo, the top of outside protection section of thick bamboo is fixed with the top motor, the output of top motor is connected with the pump body axle, pump body axle activity sets up the inside of outside protection section of thick bamboo, the inside bottom of outside protection section of thick bamboo is provided with bottom thread sleeve, the inside thread groove that is carved with of bottom thread sleeve, the thread groove is mutually supported with the pump body axle, bottom thread sleeve's bottom is provided with the bottom seal pad, the sealed top of bottom has first fixing bolt soon, first fixing bolt is bottom thread sleeve and the sealed reciprocal anchorage of bottom seal pad.
Preferably, the top cover is screwed with six second fixing bolts, the pump tank and the top cover are fixed by the second fixing bolts, and the second fixing bolts play a role in fixing.
Preferably, the right side of pump jar is connected with row material pipe, the cross-section of pump jar presents the rectangle, arranges the effect that the material pipe had played row material.
Preferably, two waste outlet pipes are connected to two sides of the top of the external protection cylinder, two waste outlet pipes are arranged on the external protection cylinder, and the waste outlet pipes are symmetrical with respect to the center of the external protection cylinder.
Preferably, the top threaded sleeve is movably placed at a position, close to the top, inside the external protection barrel, an inverse thread groove is formed in the top threaded sleeve, and the inverse thread groove can facilitate molten salt discharge.
Preferably, the thread direction of the reverse thread groove is opposite to that of the normal thread groove, a top sealing gasket is arranged at the top of the inside of the external protection cylinder, and the top sealing gasket plays a sealing role.
Preferably, the cross section of the outer protective cylinder is rectangular, and the cross section of the top sealing gasket is rectangular.
Preferably, the regular thread groove and the pump body shaft form a spiral structure, and the pump body shaft and the inverse thread groove also form a spiral structure.
Preferably, the pump body shaft passes through the top cover and extends to the inside of the pump tank, and one end of the discharge pipe extends to the inside of the pump tank.
Compared with the prior art, the utility model has the beneficial effects that: the spiral sealing device of the vertical long-shaft molten salt pump is reasonable in structure and has the following advantages:
(1) through being provided with bottom thread bush, pump body axle and positive thread groove have realized the sealed effectual purpose of device, current device is sealed effectual, therefore, during the use, positive thread groove has been coiled in bottom thread bush's inside, and positive thread groove is provided with many, the outside and the bottom thread bush of pump body axle are mutually supported, consequently, through the rotation of pump body axle, positive thread groove inter motion in pump body axle and the bottom thread bush, thereby positive thread groove can have the power of pushing down, thereby impress the fused salt in the pump jar, thereby seal.
(2) Can be to entering into the fused salt on upper portion and discharge through being provided with pump body axle, top thread sleeve and anti-thread groove, consequently, during the use, when the fused salt accident entered into upper portion, because the direction of anti-thread groove is opposite with the direction of positive thread groove to can make the unexpected fused salt that enters into outside protection section of thick bamboo upper portion discharge from the waste material exit tube, thereby make through the pipeline reentrant pump jar in, realized the effect of recycling.
(3) Through being provided with first fixing bolt, the sealed effect that seals once more of bottom packing pad and top packing pad, consequently, during the use, seal up through being provided with the bottom packing pad, through being provided with the sealed pad in top, the sealed pad in top can prevent that the fused salt from getting into to the top motor to prevent that the top motor from damaging, the practicality is strong.
Drawings
FIG. 1 is a schematic front view of the internal structure of the present invention;
FIG. 2 is a front view of the external structure of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
fig. 5 is a partial top view of the present invention.
In the figure: 1. a pump tank; 2. a discharge pipe; 3. a bottom threaded sleeve; 4. a first fixing bolt; 5. a bottom gasket; 6. a pump body shaft; 7. a positive thread groove; 8. an outer protective sleeve; 9. a waste material outlet pipe; 10. a top threaded sleeve; 11. a reverse thread groove; 12. a top seal pad; 13. a top motor; 14. a second fixing bolt; 15. and a top cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-5, an embodiment of the present invention is shown: a spiral sealing device of a vertical long-axis molten salt pump comprises a pump tank 1, a top cover 15 is fixed at the top of the pump tank 1, an external protection cylinder 8 is arranged at the top of the top cover 15, a top motor 13 is fixed at the top of the external protection cylinder 8, the output end of the top motor 13 is connected with a pump body shaft 6, the top motor 13 can enable the pump body shaft 6 to rotate, the pump body shaft 6 is movably arranged inside the external protection cylinder 8, a bottom threaded sleeve 3 is arranged at the bottom inside the external protection cylinder 8, a positive thread groove 7 is carved inside the bottom threaded sleeve 3, the molten salt can be pressed downwards through the positive thread groove 7, therefore, the sealing effect is realized, the positive thread groove 7 is matched with the pump body shaft 6, a bottom sealing gasket 5 is arranged at the bottom of the bottom threaded sleeve 3, a first fixing bolt 4 is screwed on the bottom sealing gasket 5, the bottom threaded sleeve 3 and the bottom sealing gasket 5 are fixed with each other through the first fixing bolt 4, the bottom sealing gasket 5 plays a role of sealing;
a plurality of regular thread grooves 7 are coiled in the bottom threaded sleeve 3, and the outer part of the pump body shaft 6 is matched with the bottom threaded sleeve 3, so that the pump body shaft 6 and the regular thread grooves 7 in the bottom threaded sleeve 3 move mutually through the rotation of the pump body shaft 6, and the regular thread grooves 7 have downward pushing force, so that the molten salt is pressed into the pump tank 1 to be sealed;
the second fixing bolt 14 is screwed on the top cover 15, six second fixing bolts 14 are arranged on the top cover 15, the pump tank 1 and the top cover 15 are fixed with each other by the second fixing bolts 14, the top cover 15 can be fixed on the pump tank 1 by the second fixing bolts 14, the right side of the pump tank 1 is connected with the discharge pipe 2, the discharge pipe 2 plays a role in conveniently discharging molten salt, the cross section of the pump tank 1 is rectangular, the top threaded sleeve 10 is movably placed at a position close to the top inside the external protective sleeve 8, the reverse thread groove 11 is carved in the top threaded sleeve 10, the molten salt can be discharged from the waste outlet pipe 9 through the reverse thread groove 11, the molten salt circulation function is realized, the waste outlet pipes 9 are connected to two sides of the top of the external protective sleeve 8, the waste outlet pipes 9 are arranged on the external protective sleeve 8, the waste outlet pipes 9 are symmetrical with respect to the center of the external protective sleeve 8, the reverse thread groove 11 is opposite to the thread direction of the positive thread groove 7, the top of the inside of the external protective cylinder 8 is provided with a top sealing gasket 12;
when the molten salt accidentally enters the upper part, the molten salt accidentally entering the upper part of the external protective cylinder 8 can be discharged from the waste material outlet pipe 9 due to the fact that the direction of the reverse thread groove 11 is opposite to that of the positive thread groove 7, and then the molten salt can enter the pump tank 1 again through a pipeline, and the effect of recycling is achieved;
the section of the external protection cylinder 8 is rectangular, the section of the top sealing gasket 12 is rectangular, the regular thread groove 7 and the pump body shaft 6 form a spiral structure, the pump body shaft 6 and the reverse thread groove 11 also form a spiral structure, the pump body shaft 6 penetrates through the top cover 15 and extends into the pump tank 1, and one end of the discharge pipe 2 extends into the pump tank 1;
the bottom sealing gasket 5 is arranged for sealing, and the top sealing gasket 12 is arranged for preventing molten salt from entering the top motor 13, so that the top motor 13 is prevented from being damaged;
when the molten salt pouring device is used, the device is placed at a proper position, the top motor 13 is started, the pump body shaft 6 rotates, the pump body shaft 6 enables the inner pump body impeller to enable molten salt to be discharged from the discharge pipe 2, the bottom sealing gasket 5 is arranged to seal, the positive thread groove 7 is wound in the bottom threaded sleeve 3, the positive thread grooves 7 are provided with a plurality of strips, the outer part of the pump body shaft 6 is matched with the bottom threaded sleeve 3, therefore, through rotation of the pump body shaft 6, the pump body shaft 6 and the positive thread groove 7 in the bottom threaded sleeve 3 move mutually, the positive thread groove 7 has downward pushing force, the molten salt is pressed into the pump tank 1 to seal, when the molten salt accidentally enters the upper part, the direction of the reverse thread groove 11 is opposite to the direction of the positive thread groove 7, thereby can make the unexpected fused salt that enters into 8 upper portions of outside protection section of thick bamboo discharge from waste material exit tube 9 to the messenger has realized the effect of recycling through the pipeline reentrant pump tank 1, through being provided with top sealing gasket 12, top sealing gasket 12 can prevent that the fused salt from entering to top motor 13 in, thereby prevents that top motor 13 from damaging.
Claims (9)
1. The utility model provides a spiral sealing device of vertical major axis molten salt pump which characterized in that: comprises a pump tank (1), a top cover (15) is fixed on the top of the pump tank (1), an external protection cylinder (8) is arranged at the top of the top cover (15), a top motor (13) is fixed at the top of the external protection cylinder (8), the output end of the top motor (13) is connected with a pump body shaft (6), the pump body shaft (6) is movably arranged in the outer protective cylinder (8), the bottom of the inner part of the external protective cylinder (8) is provided with a bottom threaded sleeve (3), a positive thread groove (7) is carved in the bottom threaded sleeve (3), the positive thread groove (7) is matched with the pump body shaft (6), the bottom of the bottom threaded sleeve (3) is provided with a bottom sealing gasket (5), the bottom sealing gasket (5) is screwed with a first fixing bolt (4), and the bottom threaded sleeve (3) and the bottom sealing gasket (5) are fixed with each other by the first fixing bolt (4).
2. The spiral sealing device of a vertical long-axis molten salt pump according to claim 1, wherein: second fixing bolts (14) are screwed on the top cover (15), six second fixing bolts (14) are arranged on the top cover (15), and the pump tank (1) and the top cover (15) are fixed to each other through the second fixing bolts (14).
3. The spiral sealing device of a vertical long-axis molten salt pump according to claim 1, wherein: the right side of pump jar (1) is connected with row material pipe (2), the cross-section of pump jar (1) presents the rectangle.
4. The spiral sealing device of a vertical long-axis molten salt pump according to claim 1, wherein: the two sides of the top of the external protection cylinder (8) are connected with two waste outlet pipes (9), the two waste outlet pipes (9) are arranged on the external protection cylinder (8), and the waste outlet pipes (9) are symmetrical about the center of the external protection cylinder (8).
5. The spiral sealing device of a vertical long-axis molten salt pump according to claim 1, wherein: a top threaded sleeve (10) is movably placed at a position close to the top inside the external protection barrel (8), and a reverse thread groove (11) is formed in the top threaded sleeve (10).
6. The spiral sealing device of a vertical long-shaft molten salt pump according to claim 5, wherein: the thread direction of the reverse thread groove (11) is opposite to that of the positive thread groove (7), and a top sealing gasket (12) is arranged at the top inside the external protection cylinder (8).
7. The spiral sealing device of a vertical long-axis molten salt pump according to claim 6, wherein: the section of the external protection cylinder (8) is rectangular, and the section of the top sealing gasket (12) is rectangular.
8. The spiral sealing device of a vertical long-axis molten salt pump according to claim 1, wherein: the positive thread groove (7) and the pump body shaft (6) form a spiral structure, and the pump body shaft (6) and the reverse thread groove (11) also form a spiral structure.
9. The spiral sealing device of a vertical long-shaft molten salt pump according to claim 3, wherein: the pump body shaft (6) penetrates through the top cover (15) and extends to the inside of the pump tank (1), and one end of the discharge pipe (2) extends to the inside of the pump tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123221142.5U CN216554563U (en) | 2021-12-20 | 2021-12-20 | Spiral sealing device of vertical long-shaft molten salt pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123221142.5U CN216554563U (en) | 2021-12-20 | 2021-12-20 | Spiral sealing device of vertical long-shaft molten salt pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216554563U true CN216554563U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123221142.5U Active CN216554563U (en) | 2021-12-20 | 2021-12-20 | Spiral sealing device of vertical long-shaft molten salt pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216554563U (en) |
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2021
- 2021-12-20 CN CN202123221142.5U patent/CN216554563U/en active Active
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