CN203783905U - Canned motor pump for conveying easy-to-vaporize media - Google Patents
Canned motor pump for conveying easy-to-vaporize media Download PDFInfo
- Publication number
- CN203783905U CN203783905U CN201420207861.2U CN201420207861U CN203783905U CN 203783905 U CN203783905 U CN 203783905U CN 201420207861 U CN201420207861 U CN 201420207861U CN 203783905 U CN203783905 U CN 203783905U
- Authority
- CN
- China
- Prior art keywords
- pump
- rotor
- communicated
- bubble
- casing
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 239000012452 mother liquor Substances 0.000 claims abstract description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 19
- 230000008676 import Effects 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical class ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model relates to a canned motor pump for conveying easy-to-vaporize media. The canned motor pump comprises a housing, a stator and a rotor, wherein the rotor is mounted through a front bearing block and a rear bearing block, which are arranged at two ends of the housing in a sealed manner; the stator is coaxially sleeved with the housing; the rotor extends out of the front bearing block in a protruding manner and is fixedly connected with an impeller, a pump body fixed to the housing in a sealed manner covers the impeller, an inlet communicated with the pump chamber of the pump body is formed in the side end of the pump body, an outlet communicated with the pump chamber is formed in the upper end of the pump body, and an airgap channel is formed between the stator and the rotor. An easy-to-vaporize medium enters through the inlet, flows through the pump chamber and is discharged through the outlet under the action of the impeller, and at the same time, bubbles generated in the pump body pass through another circulating channel, that is, the bubbles sequentially pass through a bubble inlet, the airgap channel, a bubble outlet, a branch channel and a circulating outlet to be discharged and then flow back to a mother liquor tank, so that bubbles generated by the cavitation phenomenon can be promptly and effectively discharged, erosion of the pump body is slowed down, and large lift and long service life are guaranteed.
Description
Technical field
The utility model relates to a kind of shielded electric-pump, relates in particular to a kind of shielded electric-pump of carrying easy vaporized media to use.
Background technique
Shielded electric-pump is a kind of one of no-leakage pump,, (as the severe toxicity, radioactivity), the liquid that inflammable and explosive and expensive or other special that are pernicious to people corrosive for delivery of having.Due to the specific use of shielded electric-pump, its structural type and common electric pump also have larger difference.
But, traditional shielded electric-pump is in the time carrying, during especially as low-boiling point liquids such as freon, liquefied ammonia, liquid carbon dioxide, liquid gas, propane, chloromethanes, because the design of lubricating fluid flow circuits is unreasonable, can not well be applicable to the conveying of the easy vaporized media of low boiling, often exist certain cavitation phenomenons, bubble can not be discharged in time, thereby not only reduce the lift of shielded electric-pump, can corrode the pump housing simultaneously, shortened the life-span.
Cavitation is that in water, gas core is grown into steam bubble, the accumulation of steam bubble, the general name of the process that flows, divides, crumbles and fall in the time of liquid local compression decline critical pressure in runner.
Model utility content
The purpose of this utility model is to overcome the problem of above-mentioned prior art, and a kind of shielded electric-pump of carrying easy vaporized media to use is provided, and it can discharge the bubble that cavitation phenomenons produces timely and effectively, slows down the pump housing and corrodes, and ensures to have good lift and working life.
Above-mentioned purpose is to be achieved through the following technical solutions:
The shielded electric-pump of carrying easy vaporized media to use, comprise casing, stator and rotor, described rotor is installed by the front-end bearing pedestal and the rear bearing block that are arranged on casing two ends, described stator coaxial sleeve is located in described casing, described rotor protrudes out described front-end bearing pedestal and is fixedly connected with impeller, described impeller outside is covered with and described casing sealing fixed pump body, the side of the described pump housing is provided with the import being communicated with pump chamber, the upper end of the described pump housing is provided with the outlet being communicated with its pump chamber, between described stator and described rotor, be provided with air gap channel, between the front slide bearing and described rotor of installing in described front-end bearing pedestal, between described front-end bearing pedestal and described casing, be respectively equipped with the bubble import that is communicated with described air gap channel and described pump chamber, between the rear sliding bearing and described rotor of installing in described rear bearing block, between described rear bearing block and described casing, be respectively equipped with the bubble outlet being communicated with described air gap channel, the end of described rear bearing block is respectively equipped with described bubble and exports the bypass passage being communicated with, described bypass passage crosses and is connected to form loop exit, described loop exit is connected with mother liquor tank.
Further, described loop exit arranges straight up, and the bubble forming between described rear sliding bearing and described rotor exports corresponding bypass passage bending upwards, and another bypass passage is horizontally disposed with.
Further, described rotor is respectively equipped with thrust disc near the relative inner of described front slide bearing and described rear sliding bearing.
Further, between described impeller and described front-end bearing pedestal, have assemblage gap, described assemblage gap is communicated with the bubble import at described pump chamber and described rotor place.
The shielded electric-pump that the easy vaporized media of conveying described in the utility model is used, comprise casing, stator and rotor, rotor is installed by the front-end bearing pedestal and the rear bearing block that are arranged on casing two ends, stator coaxial sleeve is located in casing, rotor protrudes out front-end bearing pedestal and is fixedly connected with impeller, impeller outside is covered with and casing sealing fixed pump body, the side of the pump housing is provided with the import being communicated with pump chamber, the upper end of the pump housing is provided with the outlet being communicated with pump chamber, between stator and rotor, be provided with air gap channel, between the front slide bearing and rotor of installing in front-end bearing pedestal, between front-end bearing pedestal and casing, be respectively equipped with the bubble import that is communicated with air gap channel and pump chamber, between the rear sliding bearing and rotor of installing in rear bearing block, between rear bearing block and casing, be respectively equipped with the bubble outlet being communicated with air gap channel, the end of rear bearing block is respectively equipped with bubble and exports the bypass passage being communicated with, bypass passage crosses and is connected to form loop exit, loop exit is connected with mother liquor tank.Easily vaporized media enters from import the pump chamber of flowing through, under impeller action, discharge from outlet, the bubble simultaneously producing in the pump housing is through another circulation canal: discharge and flow back to mother liquor tank through bubble import, air gap channel, bubble outlet, bypass passage and loop exit successively, thereby discharge timely and effectively the bubble that cavitation phenomenons produces, slow down pump housing erosion, ensured to there is good lift and working life.
Brief description of the drawings
Fig. 1 is the structural principle schematic diagram of the shielded electric-pump used of the easy vaporized media of conveying described in the utility model.
Embodiment
According to drawings and embodiments the utility model is described in further detail below.
As shown in Figure 1, the shielded electric-pump that the easy vaporized media of conveying described in the utility model embodiment is used, comprise casing 1, stator 2 and rotor 3, rotor 3 is installed by the front-end bearing pedestal 4 and the rear bearing block 5 that are arranged on casing 1 two ends, stator 2 coaxial sleeves are located in casing 1, rotor 3 protrudes out front-end bearing pedestal 4 and is fixedly connected with impeller 6, impeller 6 outsides are covered with casing 1 and seal fixed pump body 7, the side of the pump housing 7 is provided with the import 71 being communicated with pump chamber 7a, the upper end of the pump housing 7 is provided with the outlet 72 being communicated with pump chamber 7a, between stator 2 and rotor 3, be provided with air gap channel 8, between the front slide bearing 41 and rotor 3 of front-end bearing pedestal 4 interior installations, between front-end bearing pedestal 4 and casing 1, be respectively equipped with the bubble import 9a that is communicated with air gap channel 8 and pump chamber 7a, 9b, between the rear sliding bearing 51 and rotor 3 of rear bearing block 5 interior installations, rear bearing block 5 and casing 1 between be respectively equipped with the bubble outlet 10a being communicated with air gap channel 8, 10b, the end of rear bearing block 5 is respectively equipped with and bubble outlet 10a, the bypass passage 11a that 10b is communicated with, 11b, bypass passage 11a, 11b crosses and is connected to form loop exit 12, loop exit 12 is connected with mother liquor tank (not shown).The source of the easy vaporized media that mother liquor tank is carried.
Loop exit 12 arranges straight up, and upwards, another bypass passage 11a is horizontally disposed with in bypass passage 11b bending corresponding to the bubble outlet 10b that forms between rear sliding bearing 51 and rotor 3.Rotor 3 is respectively equipped with thrust disc 13 near the relative inner of front slide bearing 41 and rear sliding bearing 51.Between impeller 6 and front-end bearing pedestal 51, have assemblage gap 14, assemblage gap 14 is communicated with the bubble import 9b at pump chamber 7a and rotor 3 places.Wherein, assemblage gap 14 certainly exists, otherwise impeller can not rotate.
The foregoing is only explanation mode of execution of the present utility model; be not limited to the utility model; for a person skilled in the art; all within spirit of the present utility model and principle; any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. the shielded electric-pump of carrying easy vaporized media to use, comprise casing, stator and rotor, described rotor is installed by the front-end bearing pedestal and the rear bearing block that are arranged on casing two ends, described stator coaxial sleeve is located in described casing, described rotor protrudes out described front-end bearing pedestal and is fixedly connected with impeller, described impeller outside is covered with and described casing sealing fixed pump body, the side of the described pump housing is provided with the import being communicated with its pump chamber, the upper end of the described pump housing is provided with the outlet being communicated with pump chamber, between described stator and described rotor, be provided with air gap channel, it is characterized in that, between the front slide bearing and described rotor of installing in described front-end bearing pedestal, between described front-end bearing pedestal and described casing, be respectively equipped with the bubble import that is communicated with described air gap channel and described pump chamber, between the rear sliding bearing and described rotor of installing in described rear bearing block, between described rear bearing block and described casing, be respectively equipped with the bubble outlet being communicated with described air gap channel, the end of described rear bearing block is respectively equipped with described bubble and exports the bypass passage being communicated with, described bypass passage crosses and is connected to form loop exit, described loop exit is connected with mother liquor tank.
2. the shielded electric-pump of using as the easy vaporized media of conveying of claim 1, it is characterized in that, described loop exit arranges straight up, and the bubble forming between described rear sliding bearing and described rotor exports corresponding bypass passage bending upwards, and another bypass passage is horizontally disposed with.
3. the shielded electric-pump of using as the easy vaporized media of conveying of claim 1, is characterized in that, described rotor is respectively equipped with thrust disc near the relative inner of described front slide bearing and described rear sliding bearing.
4. the shielded electric-pump of using as the easy vaporized media of conveying of claim 1, is characterized in that having assemblage gap between described impeller and described front-end bearing pedestal, and described assemblage gap is communicated with the bubble import at described pump chamber and described rotor place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420207861.2U CN203783905U (en) | 2014-04-25 | 2014-04-25 | Canned motor pump for conveying easy-to-vaporize media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420207861.2U CN203783905U (en) | 2014-04-25 | 2014-04-25 | Canned motor pump for conveying easy-to-vaporize media |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203783905U true CN203783905U (en) | 2014-08-20 |
Family
ID=51320098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420207861.2U Expired - Lifetime CN203783905U (en) | 2014-04-25 | 2014-04-25 | Canned motor pump for conveying easy-to-vaporize media |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203783905U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050678A (en) * | 2016-06-22 | 2016-10-26 | 安徽天富泵阀有限公司 | Unobstructed type shielding electric pump |
| CN106194768A (en) * | 2016-08-31 | 2016-12-07 | 徐州潜龙泵业有限公司 | Cavitation-preventive canned motor pump |
| CN112283100A (en) * | 2020-10-28 | 2021-01-29 | 山东鲁辰泵业有限公司 | Blade type shield pump |
-
2014
- 2014-04-25 CN CN201420207861.2U patent/CN203783905U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050678A (en) * | 2016-06-22 | 2016-10-26 | 安徽天富泵阀有限公司 | Unobstructed type shielding electric pump |
| CN106194768A (en) * | 2016-08-31 | 2016-12-07 | 徐州潜龙泵业有限公司 | Cavitation-preventive canned motor pump |
| CN112283100A (en) * | 2020-10-28 | 2021-01-29 | 山东鲁辰泵业有限公司 | Blade type shield pump |
| CN112283100B (en) * | 2020-10-28 | 2022-04-22 | 山东鲁辰泵业有限公司 | Blade type shield pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |