CN214788011U - Volute guide vane type multistage pump - Google Patents
Volute guide vane type multistage pump Download PDFInfo
- Publication number
- CN214788011U CN214788011U CN202120666638.4U CN202120666638U CN214788011U CN 214788011 U CN214788011 U CN 214788011U CN 202120666638 U CN202120666638 U CN 202120666638U CN 214788011 U CN214788011 U CN 214788011U
- Authority
- CN
- China
- Prior art keywords
- pump
- bearing
- section
- guide vane
- water outlet
- 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.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the technical field of multistage pumps, in particular to a volute guide vane type multistage pump, which comprises a pump shaft and a pump body, wherein the pump body comprises a water inlet section, a middle section and a water outlet section, a dustproof disc is arranged at the outer side of the pump shaft, a bearing gland is arranged at the left end of the dustproof disc, a bearing and a cap are arranged at the inner side of the bearing gland, a bearing is arranged at the left end of the bearing and a bearing body is arranged at the outer side of the bearing, a machine seal cover is arranged at the inner side of the bearing body, a conventional multistage pump final-stage guide vane is cancelled, the problem that the efficiency of the pump is greatly reduced when the outer diameter of an impeller is cut more in the last stage when the guide vane is adopted in the past is solved through the guide vane bodies in the water outlet section and the water outlet section which are arranged in a volute shape, the design of the final-stage guide vane is cancelled through adopting the volute design, so that the whole thickness dimension of the multistage pump can be shortened, the total length of the pump shaft is reduced, and the length of the pump shaft is 50-100mm, the flexibility of the pump shaft during operation is reduced, the pump operation is better and stable, the whole multi-stage pump is more compact, and the miniaturization is facilitated.
Description
Technical Field
The utility model relates to a multistage pump technical field specifically is a spiral case guide vane formula multistage pump.
Background
The multi-stage pump is a centrifugal pump combining a water inlet section and a water outlet section with a middle section through a pull rod, the output water pressure of the multi-stage pump can be very high, and the centrifugal force is obtained by the rotation of an impeller, so that materials are pumped out along with the fact that the gas density reaches the working range of a mechanical vacuum pump, high vacuum is obtained gradually, and the requirement on a volute guide vane type multi-stage pump is increasing day by day.
Most multistage pumps that exist in the existing market adopt last stage guide vanes, and when the external diameter of the impeller is cut more, the efficiency of the pump is greatly reduced, and simultaneously, the total length of the pump shaft is longer, and the flexibility during the operation of the pump shaft is larger, so that the volute guide vane type multistage pump is provided aiming at the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a spiral case guide vane formula multistage pump to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a volute guide vane type multistage pump comprises a pump shaft and a pump body, wherein the pump body comprises a water inlet section, a middle section and a water outlet section, sealing rings are arranged on the left side and the right side of the middle section, a dustproof disc is arranged on the outer side of the pump shaft, a bearing gland is arranged at the left end of the dustproof disc, a bearing combining cap is arranged on the inner side of the bearing gland, a bearing is arranged at the left end of the bearing combining cap, a bearing body is arranged on the outer side of the bearing, a machine sealing cover is arranged on the inner side of the bearing body, the left end of the bearing body is fixedly connected with the water inlet section, the left end of the water inlet section is fixedly connected with the middle section, the left end of the middle section is fixedly connected with the water outlet section, a pump cover is arranged at the left end of the pump shaft, a balance drum key is arranged on the outer side of the balance drum located on the left side, a sliding bearing is arranged on the outer side of the balance drum, and a sliding bearing sleeve is arranged on the outer side of the sliding bearing, the water outlet section is arranged in a volute shape, and the guide vane body positioned in the water outlet section is arranged in a spiral shape.
Preferably, the bottom end of the pump body is provided with a pull rod, and the outer side of the pull rod is spirally connected with a pull rod nut.
Preferably, the section inboard of intaking is equipped with primary impeller, the middle section inboard is equipped with secondary impeller, primary impeller and secondary impeller's outer end one side all are equipped with the sealing ring.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, cancel conventional multistage pump last stage stator, through the play water section that is volute shape setting and go out the interior guide blade body of water section and solved when adopting last stage stator impeller external diameter cutting more in the past, the difficult problem that the efficiency of pump descends by a wide margin.
2. The utility model discloses in, through adopting the spiral case formula design, cancel the design of last stage stator for the whole thickness size of multistage pump can shorten, consequently reduces the pump shaft overall length, shortens the length 50-100mm of pump shaft, reduces the flexibility when the operation of pump shaft, makes the pump operation better stable, makes the multistage pump whole compacter, is favorable to the miniaturization.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1-pump shaft, 2-dustproof disc, 3-bearing body, 4-mechanical seal gland, 5-water inlet section, 6-primary impeller, 7-middle section, 8-secondary impeller, 9-guide vane body, 10-sealing ring, 11-water outlet section, 12-pump cover, 13-balance drum key, 14-balance drum, 15-sliding bearing, 16-sliding bearing sleeve, 17-sealing ring, 18-pull rod, 19-pull rod nut, 20-bearing, 21-bearing cap, and 22-bearing gland.
Detailed Description
Referring to fig. 1, the present invention provides a technical solution:
a volute guide vane type multistage pump comprises a pump shaft 1 and a pump body, wherein the pump body comprises a water inlet section 5, a middle section 7 and a water outlet section 11, sealing rings 10 are arranged on the left side and the right side of the middle section 7, a dustproof disc 2 is arranged on the outer side of the pump shaft 1, a bearing gland 22 is arranged at the left end of the dustproof disc 2, a bearing combining cap 21 is arranged on the inner side of the bearing gland 22, a bearing 20 is arranged at the left end of the bearing combining cap 21, a bearing body 3 is arranged on the outer side of the bearing 20, a mechanical gland cover 4 is arranged on the inner side of the bearing body 3, the water inlet section 5 is fixedly connected with the left end of the bearing body 3, the middle section 7 is fixedly connected with the left end of the water inlet section 5, the water outlet section 11 is fixedly connected with the left end of the water outlet section 11, a balance drum key 13 is fixedly connected with the tail end of the pump shaft 1, a balance drum 14 is arranged on the left side of the balance drum key 13, the outer side of the balance drum 14 is provided with a sliding bearing 15, the outer side of the sliding bearing 15 is provided with a sliding bearing sleeve 16, the water outlet section 11 is arranged in a volute shape, and the guide vane body 9 positioned in the water outlet section 11 is arranged in a spiral shape.
The bottom of the pump body is equipped with pull rod 18, the outside screwed connection of pull rod 18 has pull rod nut 19, and this kind of being provided with does benefit to the fastening installation, 5 inboards in the section of intaking are equipped with primary impeller 6, 7 inboards in the middle section are equipped with secondary impeller 8, primary impeller 6 all is equipped with sealing ring 17 with secondary impeller 8's outer end one side, and this kind of being provided with does benefit to and strengthens sealedly.
The working process is as follows: the utility model discloses in, the pump shaft provides the stable stay by slide bearing 15 and bearing 20 when rotatory, flows through in proper order when liquid gets into the pump chamber: the water inlet section 5, the primary impeller 6, the middle section 7, the secondary impeller 8, the guide vane body 9 and the water outlet section 11. The pump shaft 1 is connected with the primary impeller 6, the secondary impeller 8 and the balance drum key 13, the balance drum key 13 is clamped with the balance drum 14, the prime motor drives the pump shaft 1 to drive the primary impeller 6 and the secondary impeller 8 to rotate, and mechanical energy is changed into static pressure energy due to the action of centrifugal force. Static liquid in a pump cavity is rotated by a primary impeller 6 to do work to obtain energy, the liquid is pressurized and then is conveyed into a guide vane body 7, the guide vane body 7 guides the liquid into a secondary impeller 8, the secondary impeller 8 and the primary impeller 6 synchronously rotate to enable the liquid to obtain hydraulic energy and flow speed again, so that the aim of conveying the liquid or increasing the pressure of the liquid is achieved, a conventional last-stage guide vane of the multi-stage pump is cancelled, the problem that the efficiency of the pump is greatly reduced when the outer diameter of the impeller is cut more when the last-stage guide vane is adopted in the prior art is solved by a water outlet section 11 and a guide vane body 9 in the water outlet section 11 which are arranged in a volute shape, the design of the last-stage guide vane is cancelled, so that the overall thickness size of the multi-stage pump can be shortened, the total length of the pump shaft 1 is reduced, the length of the pump shaft is shortened by 50-100mm, the flexibility of the pump shaft 1 during operation is reduced, and the operation of the pump is more stable, the multistage pump is more compact and is beneficial to miniaturization.
The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.
Claims (3)
1. The utility model provides a volute casing stator formula multistage pump, includes pump shaft (1) and pump body, its characterized in that: the pump body comprises a water inlet section (5), a middle section (7) and a water outlet section (11), sealing rings (10) are arranged on the left side and the right side of the middle section (7), a dustproof disc (2) is arranged on the outer side of the pump shaft (1), a bearing gland (22) is arranged at the left end of the dustproof disc (2), a bearing combining cap (21) is arranged on the inner side of the bearing gland (22), a bearing (20) is arranged at the left end of the bearing combining cap (21), a bearing body (3) is arranged on the outer side of the bearing (20), a mechanical sealing cap (4) is arranged on the inner side of the bearing body (3), the water inlet section (5) is fixedly connected to the left end of the bearing body (3), the middle section (7) is fixedly connected to the left end of the water inlet section (5), the water outlet section (11) is fixedly connected to the left end of the middle section (7), a pump cover (12) is arranged at the left end of the water outlet section (11), and a balance drum key (13) is fixedly connected to the tail end of the pump shaft (1), the balance drum is characterized in that a balance drum (14) is arranged on the outer side of the balance drum key (13) on the left side, a sliding bearing (15) is arranged on the outer side of the balance drum (14), a sliding bearing sleeve (16) is arranged on the outer side of the sliding bearing (15), the water outlet section (11) is arranged in a volute shape, and a guide vane body (9) located in the water outlet section (11) is arranged in a spiral shape.
2. The volute-vane multistage pump of claim 1, wherein: the bottom end of the pump body is provided with a pull rod (18), and the outer side of the pull rod (18) is spirally connected with a pull rod nut (19).
3. The volute-vane multistage pump of claim 1, wherein: the section of intaking (5) inboard is equipped with primary impeller (6), middle section (7) inboard is equipped with secondary impeller (8), outer end one side of primary impeller (6) and secondary impeller (8) all is equipped with sealing ring (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120666638.4U CN214788011U (en) | 2021-04-01 | 2021-04-01 | Volute guide vane type multistage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120666638.4U CN214788011U (en) | 2021-04-01 | 2021-04-01 | Volute guide vane type multistage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214788011U true CN214788011U (en) | 2021-11-19 |
Family
ID=78668339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120666638.4U Active CN214788011U (en) | 2021-04-01 | 2021-04-01 | Volute guide vane type multistage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214788011U (en) |
-
2021
- 2021-04-01 CN CN202120666638.4U patent/CN214788011U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0011982A1 (en) | Regenerative rotodynamic machines | |
| CN211174649U (en) | Low-temperature immersed pump with guide flow channel on shell | |
| CN105464998B (en) | Screw lifting combined agricultural water pump | |
| CN110332125B (en) | Compact axial flow pipeline pump | |
| CN210623090U (en) | Compact axial flow pipeline pump | |
| CN214788011U (en) | Volute guide vane type multistage pump | |
| US3694101A (en) | Reentry centrifugal pump/mixers | |
| US3385225A (en) | Rotary pump | |
| CN106640667B (en) | A kind of guide shell type two-stage double-suction centrifugal pump | |
| CN101846081A (en) | Horizontal radial multi-stage centrifugal pump | |
| CN212202496U (en) | Horizontal self-priming pump with gas-liquid separator at pump cover | |
| CN210484178U (en) | Combined guide vane type pump | |
| CN210715136U (en) | Straight-through centrifugal pump | |
| CN214788013U (en) | Guide vane type multistage pump | |
| CN206221284U (en) | Double feed inlet guide-vane horizontal space multi-stage centrifugal pump | |
| CN2252256Y (en) | Sectional type multistage pump | |
| CN1439808A (en) | Multistage sectional centrifugal pump with symmetric impeller arrangement | |
| CN214788012U (en) | Impeller keyless type multi-stage pump | |
| CN209856098U (en) | Novel impeller assembly of centrifugal pump | |
| CN217206893U (en) | Double-inlet guide vane and volute combined type axial split multistage centrifugal pump | |
| CN207830208U (en) | A kind of impeller assembly of deep well pump | |
| CN110863995A (en) | Low-temperature immersed pump with guide flow channel on shell | |
| CN222686878U (en) | A deep well pump hydraulic structure with a rotating spiral guide vane structure | |
| CN218542598U (en) | Compressor with multistage impellers | |
| CN221723110U (en) | A centrifugal pump head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |