CN202493425U - Multistage inner gearing gear pump - Google Patents
Multistage inner gearing gear pump Download PDFInfo
- Publication number
- CN202493425U CN202493425U CN2012200312368U CN201220031236U CN202493425U CN 202493425 U CN202493425 U CN 202493425U CN 2012200312368 U CN2012200312368 U CN 2012200312368U CN 201220031236 U CN201220031236 U CN 201220031236U CN 202493425 U CN202493425 U CN 202493425U
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- Prior art keywords
- stage
- pump
- main shaft
- multistage
- bearing
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Abstract
The utility model discloses a multistage inner gearing gear pump which comprises a main shaft (1), a seal (2), a gland (3), a bearing (4), an inhaling body (5), a sliding bearing (6) and a discharging body (14), wherein the seal (2), the gland (3), the bearing (4), the inhaling body (5), the sliding bearing (6) and the discharging body (14) are arranged on the main shaft (1) in linkage mode. The multistage inner gearing pump is characterized in that a first-stage pump body (7), a first-stage rack wheel (8), a first-stage pinion (9), a supporting plate (10), a second-stage pump body (11), a second-stage rack wheel (12) and a second-stage pinion (13) are arranged between the inhaling body (5) and the discharging body (14) in linkage mode. The main shaft drives multistage inner gearing gears in series. The thickness of the gears is adjusted to achieve an increase and a decrease of flux at a constant rotation speed, and a maximum inlet and outlet pressure difference can be adjusted through adjustment of the stage number of the gears. Media are pressurized by multistage rotors in sequence and achieves an inlet and outlet pressure difference which is higher than that of a single stage pump, a modularization extension is achieved, different flux and different pressure are convenient to achieve, and the difficulty of process is low.
Description
Technical field
The utility model belongs to a kind of gear pump, particularly relates to a kind of multistage crescent gear pump.
Background technique
Crescent gear pump is to adopt the theory of engagement in the gear, and inside and outside pitch circle is near on one side.Active internal gear on the main shaft drives wherein that external gear rotates in the same way, is separated from each other at inlet's gear to form negative pressure and suck liquid, and gear constantly embeds engagement and with liquid extruding output in the outlet port.The single-stage crescent gear pump is the mesolow pump.Existing high pressure crescent gear pump has all adopted diaphragm structure, and the complicated compensation mechanism of set inside, causes complex structure, processing difficulties.
Summary of the invention
The purpose of the utility model is to overcome the above-mentioned deficiency of existing technology, and a kind of improved crescent gear pump is provided, and simple in structure, the manufacturing difficulty is low, can realize the modularization expansion, is convenient to realize different pressures.
For reaching above-mentioned purpose; The utility model is taked following technological scheme: the utility model comprises: main shaft and dress join sealing, gland, bearing, suction body, sliding bearing, discharge body above it, it is characterized in that: also adorn between suction body and the discharge body and be associated with first-stage pump body, one-level gearwheel, one-level small gear, dunnage, second-stage pump body, secondary gearwheel, secondary small gear.
The utility model is taked technique scheme, has following beneficial effect: the utility model is by a multistage inside engaged gear of main shaft tandem drive, is multistage crescent gear pump, and pump has unique import and outlet.Thickness through the adjustment gear can realize deciding the increase and decrease of rotating speed down-off, the highest inlet outlet pressure differential of the adjustment adjustable whole pump of gear progression.Medium is the supercharging through multi-stage rotor successively, thereby reaches the inlet outlet pressure differential that is higher than single-stage pump.Two stage pump can realize not being higher than 2 times of single-stage pump inlet outlet pressure differentials, and 3 grades of pumps can realize not being higher than three times of single-stage pump inlet outlet pressure differentials, by that analogy.The utility model is simple in structure, can realize the modularization expansion, be convenient to realize different flow and different pressures, and the manufacturing difficulty is low.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.
Fig. 1 is the utility model structure diagram.
Indicate among the figure: 1-main shaft, 2-sealing, 3-gland, 4-bearing, 5-suction body, 6-sliding bearing, 7-first-stage pump body, 8-one-level gearwheel, 9-one-level small gear, 10-dunnage, 11-second-stage pump body, 12-secondary gearwheel, 13-secondary small gear, 14-discharge body.
Embodiment
By shown in Figure 1; The utility model comprises: main shaft 1 and dress join sealing 2, gland 3, bearing 4, suction body 5, sliding bearing 6, the discharge body 14 above it, also adorn between suction body 5 and the discharge body 14 and are associated with first-stage pump body 7, one-level gearwheel 8, one-level small gear 9, dunnage 10, second-stage pump body 11, secondary gearwheel 12, secondary small gear 13.
The utility model adopts the interior engagement configuration that is driven gearwheel by small gear, and all gears all are installed in series on same main shaft.The gearwheel center of odd number level and even level is with respect to the main shaft symmetric arrangement.The highest inlet outlet pressure differential of the adjustment adjustable whole pump of gear progression, minimum is two-stage.
Claims (1)
1. multistage crescent gear pump; It comprises: main shaft (1) and dress join sealing (2), gland (3), bearing (4), suction body (5), sliding bearing (6), the discharge body (14) above it, it is characterized in that: also adorn between suction body (5) and the discharge body (14) and be associated with first-stage pump body (7), one-level gearwheel (8), one-level small gear (9), dunnage (10), second-stage pump body (11), secondary gearwheel (12), secondary small gear (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200312368U CN202493425U (en) | 2012-02-01 | 2012-02-01 | Multistage inner gearing gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200312368U CN202493425U (en) | 2012-02-01 | 2012-02-01 | Multistage inner gearing gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493425U true CN202493425U (en) | 2012-10-17 |
Family
ID=46999657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200312368U Expired - Lifetime CN202493425U (en) | 2012-02-01 | 2012-02-01 | Multistage inner gearing gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493425U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134600A (en) * | 2015-09-29 | 2015-12-09 | 天津商业大学 | Vertical all-sealed double-stage compression internal transmission rotary compressor |
| CN105134598A (en) * | 2015-09-29 | 2015-12-09 | 天津商业大学 | Double-stage compression opening type internal transmission rotary compressor |
| CN105156326A (en) * | 2015-09-29 | 2015-12-16 | 天津商业大学 | Horizontal type totally-closed two-stage compression inner transmission rotary compressor |
| CN109681424A (en) * | 2018-11-21 | 2019-04-26 | 大连华科机械有限公司 | Multistage-combination gear oil-well pump |
| CN113187719A (en) * | 2021-04-28 | 2021-07-30 | 上海朋泰机械科技有限公司 | Gear ring, pump shaft, machining method of pump shaft and internal gear pump |
-
2012
- 2012-02-01 CN CN2012200312368U patent/CN202493425U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134600A (en) * | 2015-09-29 | 2015-12-09 | 天津商业大学 | Vertical all-sealed double-stage compression internal transmission rotary compressor |
| CN105134598A (en) * | 2015-09-29 | 2015-12-09 | 天津商业大学 | Double-stage compression opening type internal transmission rotary compressor |
| CN105156326A (en) * | 2015-09-29 | 2015-12-16 | 天津商业大学 | Horizontal type totally-closed two-stage compression inner transmission rotary compressor |
| CN109681424A (en) * | 2018-11-21 | 2019-04-26 | 大连华科机械有限公司 | Multistage-combination gear oil-well pump |
| CN113187719A (en) * | 2021-04-28 | 2021-07-30 | 上海朋泰机械科技有限公司 | Gear ring, pump shaft, machining method of pump shaft and internal gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |