CN203214299U - Pressure automatic feedback type pump sealing device - Google Patents
Pressure automatic feedback type pump sealing device Download PDFInfo
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- CN203214299U CN203214299U CN 201320116780 CN201320116780U CN203214299U CN 203214299 U CN203214299 U CN 203214299U CN 201320116780 CN201320116780 CN 201320116780 CN 201320116780 U CN201320116780 U CN 201320116780U CN 203214299 U CN203214299 U CN 203214299U
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- regulating box
- pressure
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Abstract
The utility model belongs to the field of mechanical engineering, and particularly relates to a pressure automatic feedback type pump sealing device. The pump sealing device comprises a stuffing gland, a sealing cavity surrounded by packing stuffing, and liquid stuffing in the sealing cavity. The pump sealing device is characterized in that an isolator is arranged and comprises a regulating box and a guide sleeve connected up and down, wherein a regulating bolt is arranged on the top of the regulating box, the tail part of the regulating bolt is capable of penetrating into the regulating box, a piston, a shaft bushing and a spring are arranged in the guide sleeve, a sealing ring is arranged between the piston and the inner wall of the guide sleeve, a piston shaft of the piston is capable of penetrating out of the upper part of the guide sleeve and entering the regulating box, the shaft bushing and the spring are sleeved on the piston shaft, the spring is arranged below the shaft bushing, the liquid stuffing cavity at the lower part of the piston is communicated with the sealing cavity through a first pipeline, and a water cavity at the upper part of the piston is communicated with an inner cavity of the pump body through a second pipeline. The inside and outside pressure difference of the sealing cavity in the pump sealing device is close to zero, the sealing is reliable, and the pressure in the sealing cavity is capable of changing along the pressure change outside the sealing cavity, the maintenance frequency is reduced, and the economic performance is good.
Description
Technical field
The utility model relates to the automatic reaction type pump sealing apparatus of a kind of pressure, belongs to mechanical engineering field.
Background technique
The existing pump sealing means mainly contains packing_seal, mechanical seal and soft packing seal, and packing_seal reaches sealing effect by the winding of asbestos rope, but owing to be extruding property, axle easy to wear; Mechanical seal adds stationary ring by rotating ring and adds the sealing of O type circle, does not hinder axle but change to bother; And soft packing seal is by being wound on the axle with carbon fiber flexible glue mud, and sealing is injected in pressurization, do not hinder an easy-maintaining but easily seeps water during termination of pumping.
The model utility content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: provide a kind of pressure automatic reaction type pump sealing apparatus, make the Seal cage external and internal pressure be in a kind of dynamic balance state all the time, make the inside and outside pressure reduction of Seal cage approach zero, reduced sealing difficulty, increase the reliability of sealing, reduced the frequency of maintenance, maintenance when increasing sealing reliability.
The automatic reaction type pump sealing apparatus of pressure described in the utility model, comprise Gland, the Seal cage that is surrounded into by packing filling, liquid filler in the Seal cage, isolator is set, isolator comprises regulating box and the pilot sleeve that connects up and down, the regulating box top is installed and is regulated bolt, the afterbody of regulating bolt penetrates in the regulating box, be provided with piston in the pilot sleeve, axle sleeve and spring, between piston and the pilot sleeve inwall seal ring is installed, the piston shaft of piston passes and enters regulating box from pilot sleeve top, axle sleeve and spring housing are contained on the piston shaft, spring is positioned at the axle sleeve below, the liquid filler chamber of piston bottom is communicated with Seal cage by the pipeline first, and the water cavity on piston top is communicated with pump housing inner chamber by pipeline second.
Wherein, isolator can prevent that medium (being water) is blended in the Seal cage, has also played the effect of pressure transducer on the other hand on the one hand.
Spring in the pilot sleeve is used for providing additional external force, realizes that by selecting different springs for use the pressure in the Seal cage is higher than the pressure that is equal to or less than in the pump housing inner chamber (sealed chamber), realizes different purposes.
Working principle and process:
When rising, the pressure medium that water pump is carried passes to piston by pipeline second, be given to Seal cage by the transmission of connecting pipeline first again, make Seal cage and sealed pump housing chamber pressure interaction by connecting pipeline second, isolator, connecting tube first, realized three functions: (1) makes the Seal cage external and internal pressure be in a kind of dynamic balance state all the time, make the inside and outside pressure reduction of Seal cage approach zero, reduce sealing difficulty, increased the reliability of sealing; (2) pressure in the Seal cage changes with the chamber pressure outside, is particularly suitable for the occasion that pressure surge changes; (3) because pressure is self-regulating, (tension air horsepower increases, and increases the weight of wearing and tearing to have solved the too tight or too loose problem that the manual tune Gland occurs; Loosening can the leakage), the frequency of greatly reduce maintenance, safeguarding.
Locking moving part is installed in the described regulating box, and locking moving part is being regulated between bolt and the piston shaft.Preventing from regulating bolt by locking moving part produces loosening.Wherein, described locking moving part is spring pad or spring.
Described piston is dish formula piston.
The beneficial effect that the utility model compared with prior art has is:
This pump sealing apparatus is rational in infrastructure, can realize Seal cage and sealed pressure interaction by pipeline first, isolator, pipeline second, makes the inside and outside pressure reduction of Seal cage approach zero, reduces sealing difficulty, increases sealing reliability; Pressure in the Seal cage can change with the chamber pressure outside, is particularly suitable for the occasion that pressure surge changes; Pressure is regulated automatically, has reduced the frequency of maintenance, maintenance, has saved cost, and economic performance is good; Spring is set in the pilot sleeve, thereby additional external force is provided, realize that the pressure in the Seal cage is higher than the pressure that is equal to or less than in the pump housing inner chamber (sealed chamber), to reach different purposes.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, Gland; 2, packing filling; 3, Seal cage; 4, pipeline first; 5, isolator; 6, pilot sleeve; 7, liquid filler chamber; 8, piston; 9, seal ring; 10, water cavity; 11, spring; 12, axle sleeve; 13, piston shaft; 14, regulate bolt; 15, regulating box; 16, spring; 17, pipeline second.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
As shown in Figure 1, the automatic reaction type pump sealing apparatus of pressure, comprise Gland 1, the Seal cage 3 that is surrounded into by packing filling 2, liquid filler in the Seal cage 3, it is characterized in that: isolator 5 is set, isolator 5 comprises regulating box 15 and the pilot sleeve 6 that connects up and down, regulating box 15 tops are installed and are regulated bolt 14, the afterbody of regulating bolt 14 penetrates in the regulating box 15, be provided with piston 8 in the pilot sleeve 6, axle sleeve 12 and spring 11, seal ring 9 is installed between piston 8 and pilot sleeve 6 inwalls, the piston shaft 13 of piston 8 passes and enters regulating box 15 from pilot sleeve 6 tops, axle sleeve 12 and spring 11 are sleeved on the piston shaft 13, spring 11 is positioned at axle sleeve 12 belows, and the liquid filler chamber 7 of piston 8 bottoms is communicated with Seal cage 3 by pipeline first 4, and the water cavity 10 on piston 8 tops is communicated with pump housing inner chamber by pipeline second 17.
Wherein, locking moving part is installed in the regulating box 15, locking moving part can adopt spring pad or spring, adopts spring 16, spring 16 two ends to connect respectively in the present embodiment and regulates bolt 14 and piston shaft 13; Piston 8 adopts dish formula piston.
When rising, the pressure medium that water pump is carried passes to piston 8 by pipeline second 17, transmitted by connecting pipeline first 4 again and be given to Seal cage 3, make Seal cage 3 external and internal pressures be in a kind of dynamic balance state all the time by connecting pipeline second 17, isolator 5, connecting tube first, thereby realize automatic feedback and the adjusting of pressure.
Claims (5)
1. automatic reaction type pump sealing apparatus of pressure, comprise Gland (1), the Seal cage (3) that is surrounded into by packing filling (2), liquid filler in the Seal cage (3), it is characterized in that: isolator (5) is set, isolator (5) comprises regulating box (15) and the pilot sleeve (6) that connects up and down, regulating box (15) top is installed and is regulated bolt (14), the afterbody of regulating bolt (14) penetrates in the regulating box (15), be provided with piston (8) in the pilot sleeve (6), axle sleeve (12) and spring (11), between piston (8) and pilot sleeve (6) inwall seal ring (9) is installed, the piston shaft of piston (13) passes and enters regulating box (15) from pilot sleeve (6) top, axle sleeve (12) and spring (11) are sleeved on the piston shaft (13), spring (11) is positioned at axle sleeve (12) below, the liquid filler chamber (7) of piston (8) bottom is communicated with Seal cage (3) by pipeline first (4), and the water cavity (10) on piston (8) top is communicated with (17) pump housing inner chamber by pipeline second.
2. the automatic reaction type pump sealing apparatus of pressure according to claim 1 is characterized in that: locking moving part is installed in the described regulating box (15), and locking moving part is positioned to be regulated between bolt (14) and the piston shaft (13).
3. the automatic reaction type pump sealing apparatus of pressure according to claim 2, it is characterized in that: described locking moving part is spring pad.
4. the automatic reaction type pump sealing apparatus of pressure according to claim 2, it is characterized in that: described locking moving part is spring (16).
5. the automatic reaction type pump sealing apparatus of pressure according to claim 1, it is characterized in that: described piston (8) is dish formula piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320116780 CN203214299U (en) | 2013-03-14 | 2013-03-14 | Pressure automatic feedback type pump sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320116780 CN203214299U (en) | 2013-03-14 | 2013-03-14 | Pressure automatic feedback type pump sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214299U true CN203214299U (en) | 2013-09-25 |
Family
ID=49203843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320116780 Expired - Fee Related CN203214299U (en) | 2013-03-14 | 2013-03-14 | Pressure automatic feedback type pump sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214299U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179716A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Stuffing box for immersible pump |
| CN111550557A (en) * | 2020-05-11 | 2020-08-18 | 山东省章丘鼓风机股份有限公司 | Electric compression packing sealing device and control method thereof |
| CN117028197A (en) * | 2023-08-07 | 2023-11-10 | 烟台东德氢能技术有限公司 | Circulating liquid constant pressure difference circulating method |
-
2013
- 2013-03-14 CN CN 201320116780 patent/CN203214299U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179716A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Stuffing box for immersible pump |
| CN111550557A (en) * | 2020-05-11 | 2020-08-18 | 山东省章丘鼓风机股份有限公司 | Electric compression packing sealing device and control method thereof |
| CN117028197A (en) * | 2023-08-07 | 2023-11-10 | 烟台东德氢能技术有限公司 | Circulating liquid constant pressure difference circulating method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20180314 |