CN204239330U - The pressure reduction structure in mechanical seal chamber - Google Patents
The pressure reduction structure in mechanical seal chamber Download PDFInfo
- Publication number
- CN204239330U CN204239330U CN201420648008.4U CN201420648008U CN204239330U CN 204239330 U CN204239330 U CN 204239330U CN 201420648008 U CN201420648008 U CN 201420648008U CN 204239330 U CN204239330 U CN 204239330U
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- pump
- pressure reduction
- reduction structure
- cover
- mechanical seal
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Abstract
The utility model provides a kind of pressure reduction structure of mechanical seal chamber, belongs to pump technology field.It solve existing pressure reduction structure can affect the hydraulic performance of water pump, reduce the problem in water pump working life.The pressure reduction structure of this mechanical Seal cage, be located between the pump cover of submersible pump and oil cylinder cover, the impeller of submersible pump is positioned at pump chamber, the interlayer that thickness is less is formed between impeller and pump cover, this pressure reduction structure comprises radial direction and is located at guiding gutter on oil cylinder cover and the pod apertures for being communicated with interlayer and guiding gutter be located on pump cover, pump cover has its outer end and extend out to through hole outside submersible pump, the inner of through hole is communicated with guiding gutter.The utility model has the advantages such as effect of easing stress is good, the hydraulic performance that do not affect water pump.
Description
Technical field
The utility model belongs to pump technology field, relates to a kind of pressure reduction structure of submersible pump pump, particularly a kind of pressure reduction structure of submersible pump mechanical seal chamber.
Background technique
Operationally, the pressure of its pump chamber is higher than the pressure in mechanical seal chamber, if reduce pressure not in time, this pressure extrusion machinery sealing, causes mechanical seal to be lost efficacy for submersible pump.The decompression method of known submersible pump pump chamber to mechanical seal chamber has: dynamic seal, employing back shroud of impeller add back blade, back shroud of impeller adds seal ring and bore the methods such as pressure compensation opening in seal ring, although play certain effect of easing stress, these measures also bring negative effect: the load Jia great ﹑ of electric pump sacrifices the hydraulic performance of pump, has a strong impact on impeller life.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of pressure reduction structure not affecting submersible pump performance, mechanical seal chamber that effect of easing stress is good.
The purpose of this utility model realizes by following technical proposal:
The pressure reduction structure of this mechanical Seal cage, be located between the pump cover of submersible pump and oil cylinder cover, the impeller of described submersible pump is positioned at pump chamber, the interlayer that thickness is less is formed between described impeller and pump cover, it is characterized in that, this pressure reduction structure comprises radial direction and is located at guiding gutter on oil cylinder cover and the pod apertures for being communicated with interlayer and guiding gutter be located on pump cover, and described pump cover has its outer end and extend out to through hole outside submersible pump, the inner of described through hole is communicated with described guiding gutter.
In the pressure reduction structure in above-mentioned mechanical seal chamber, be provided with stuffing box gland between described pump cover and the rotating shaft of submersible pump, above-mentioned pod apertures is axially located at sealing and is put, and the lower end of described pod apertures is communicated with interlayer, and its upper end is communicated with guiding gutter.
In the pressure reduction structure in above-mentioned mechanical seal chamber, described oil cylinder cover with there is between rotating shaft the circular groove be communicated with above-mentioned guiding gutter, the upper end of above-mentioned pod apertures is communicated with this circular groove.
In the pressure reduction structure in above-mentioned mechanical seal chamber, described through hole is axially located on described pump cover.
During submersible pump work, the pressure in pump chamber raises, and its pressure raised, through interlayer, enters in pod apertures, enters in circular groove subsequently, then in guiding gutter, finally by through hole pressure release, reduces pump chamber to the pressure in mechanical seal chamber.The pressure release passage be made up of interlayer, pod apertures, guiding gutter and through hole does not communicate with the gate vane channel (the draining runner of submersible pump) of submersible pump, the hydraulic performance of submersible pump can not be reduced, do not increase the load of submersible pump, can not impact the working life of submersible pump.
Compared with prior art, the pressure reduction structure of this mechanical Seal cage has the following advantages:
Effectively can reduce the pressure of pump chamber to mechanical seal chamber by this structure, reduce the risk that mechanical seal chamber is intake; The pressure release passage be made up of interlayer, pod apertures, guiding gutter and through hole is not communicated with the water conservancy diversion runner of submersible pump, therefore can not reduce the hydraulic performance of submersible pump, does not increase the load of submersible pump, can not impact the working life of submersible pump.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of preferred embodiment that the utility model provides.
In figure, 1, pump cover; 2, oil cylinder cover; 21, circular groove; 3, impeller; 4, interlayer; 5, guiding gutter; 6, pod apertures; 7, through hole; 8, stuffing box gland.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
The pressure reduction structure of this mechanical Seal cage, is located between the pump cover 1 of submersible pump and oil cylinder cover 2, and the impeller 3 of submersible pump is positioned at pump chamber, is formed with the less interlayer of thickness 4 between impeller 3 and pump cover 1.As shown in Figure 1, this pressure reduction structure comprises radial direction and is located at guiding gutter 5 on oil cylinder cover 2 and is located at the pod apertures 6 for being communicated with interlayer 4 and guiding gutter 5 on pump cover 1, pump cover 1 has its outer end and extend out to through hole 7 outside submersible pump, the inner of through hole 7 is communicated with described guiding gutter 5.Concrete, as shown in Figure 1, through hole 7 is axially located on pump cover 1.
Stuffing box gland 8 is provided with between pump cover 1 and the rotating shaft of submersible pump, pod apertures 6 is axially located on sealing cover 8, the lower end of pod apertures 6 is communicated with interlayer 4, oil cylinder cover 2 with there is between rotating shaft the circular groove 21 be communicated with guiding gutter 5, the upper end of pod apertures 6 is communicated with this circular groove 21.
During submersible pump work, the pressure in pump chamber raises, and its pressure raised, through interlayer 4, enters in pod apertures 6, enters in circular groove 21 subsequently, then in guiding gutter 5, finally by through hole 7 pressure release, reduces pump chamber to the pressure in mechanical seal chamber.The pressure release passage be made up of interlayer 4, pod apertures 6, guiding gutter 5 and through hole 7 does not communicate with the gate vane channel (the draining runner of submersible pump) of submersible pump, the hydraulic performance of submersible pump can not be reduced, do not increase the load of submersible pump, can not impact the working life of submersible pump.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (4)
1. the pressure reduction structure in a mechanical seal chamber, be located between the pump cover (1) of submersible pump and oil cylinder cover (2), the impeller (3) of described submersible pump is positioned at pump chamber, the less interlayer of thickness (4) is formed between described impeller (3) and pump cover (1), it is characterized in that, this pressure reduction structure comprises radial direction and is located at guiding gutter (5) on oil cylinder cover (2) and is located at the pod apertures (6) for being communicated with interlayer (4) and guiding gutter (5) on pump cover (1), described pump cover (1) has its outer end and extend out to through hole (7) outside submersible pump, the inner of described through hole (7) is communicated with described guiding gutter (5).
2. the pressure reduction structure in mechanical seal chamber according to claim 1, it is characterized in that, stuffing box gland (8) is provided with between described pump cover (1) and the rotating shaft of submersible pump, above-mentioned pod apertures (6) is axially located on sealing cover (8), the lower end of described pod apertures (6) is communicated with interlayer (4), and its upper end is communicated with guiding gutter (5).
3. the pressure reduction structure in mechanical seal chamber according to claim 2, it is characterized in that, described oil cylinder cover (2) with there is between rotating shaft the circular groove (21) be communicated with above-mentioned guiding gutter (5), the upper end of above-mentioned pod apertures (6) is communicated with this circular groove (21).
4. the pressure reduction structure in the mechanical seal chamber according to claim 1 or 2 or 3, is characterized in that, described through hole (7) is axially located on described pump cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420648008.4U CN204239330U (en) | 2014-11-04 | 2014-11-04 | The pressure reduction structure in mechanical seal chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420648008.4U CN204239330U (en) | 2014-11-04 | 2014-11-04 | The pressure reduction structure in mechanical seal chamber |
Publications (1)
| Publication Number | Publication Date |
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| CN204239330U true CN204239330U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420648008.4U Active CN204239330U (en) | 2014-11-04 | 2014-11-04 | The pressure reduction structure in mechanical seal chamber |
Country Status (1)
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| CN (1) | CN204239330U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402168A (en) * | 2016-11-21 | 2017-02-15 | 南京磁谷科技有限公司 | Structure of pressure relief hole capable of reducing axial force |
| CN109058126A (en) * | 2018-09-20 | 2018-12-21 | 江苏大学镇江流体工程装备技术研究院 | A kind of vertical emergency drainage centrifugal pump |
-
2014
- 2014-11-04 CN CN201420648008.4U patent/CN204239330U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402168A (en) * | 2016-11-21 | 2017-02-15 | 南京磁谷科技有限公司 | Structure of pressure relief hole capable of reducing axial force |
| CN109058126A (en) * | 2018-09-20 | 2018-12-21 | 江苏大学镇江流体工程装备技术研究院 | A kind of vertical emergency drainage centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |