CN116576155A - Flow guide assembly for centrifugal pump - Google Patents
Flow guide assembly for centrifugal pump Download PDFInfo
- Publication number
- CN116576155A CN116576155A CN202310830112.9A CN202310830112A CN116576155A CN 116576155 A CN116576155 A CN 116576155A CN 202310830112 A CN202310830112 A CN 202310830112A CN 116576155 A CN116576155 A CN 116576155A
- Authority
- CN
- China
- Prior art keywords
- plate
- centrifugal pump
- cover
- water inlet
- baffle
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 14
- 238000005086 pumping Methods 0.000 abstract description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 3
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 3
- 241001330002 Bambuseae Species 0.000 abstract 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 3
- 239000011425 bamboo Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a diversion component for a centrifugal pump, which comprises the following components: guide plate, apron and seal holder, the guide plate with form the water conservancy diversion chamber between the apron, the upper end of apron is provided with the water inlet, the seal holder includes the manger plate cover, sets up the sealed section of thick bamboo of manger plate cover lower extreme and sets up the annular seat of sealed section of thick bamboo lower extreme, manger plate cover, sealed section of thick bamboo are connected with annular seat an organic whole, the top of annular seat is provided with annular lid, be provided with sealing gasket between annular lid and the annular seat. 1. According to the utility model, the water pumped out from the water outlet of the lower-stage impeller is completely blocked in the sealing seat and completely enters the upper-stage impeller by arranging the water blocking cover, so that the working efficiency of the vertical multistage centrifugal pump is greatly improved; the water retaining cover, the sealing cylinder and the annular seat adopt an integrated structure, so that the assembly is convenient; through set up sealing gasket between annular lid and annular seat, sealing gasket cooperates with the impeller, reduces axial leakage, improves pumping efficiency.
Description
Technical Field
The utility model relates to the technical field of centrifugal pumps, in particular to a flow guide assembly for a centrifugal pump.
Background
The centrifugal pump is a device which drives an impeller to rotate through a motor, and the inlet of the pump is used for generating pressure difference between the inside and the outside of the pump to continuously suck fluid and discharge the fluid. The existing water pump flow directors are various in structure and different in process, but have the problems of complex process, high cost or leakage, and the performance of the water pump is affected.
The Chinese patent with publication number of CN205136141U discloses a multistage centrifugal pump deflector, which comprises a water inlet baffle, a deflector, a mouth ring seat and a mouth ring cover, wherein the deflector is provided with a curled edge structure, the water inlet baffle is connected in the deflector in a spinning riveting way, the mouth ring seat is fixedly connected below the deflector, the mouth ring cover is connected with the mouth ring seat in a spring pressing way, a sealing piece is arranged between the mouth ring seat and the mouth ring cover, but the deflector lacks a water blocking cylinder, so that water at the inlet of a water pump cannot completely enter a first-stage impeller, and the working efficiency of the centrifugal pump is reduced.
Disclosure of Invention
The utility model aims to provide a flow guide component for a centrifugal pump, which has good sealing performance and improves the working efficiency of the centrifugal pump.
The above object of the present utility model is achieved by the following technical solutions: a baffle assembly for a centrifugal pump, comprising: the guide plate, set up apron and the setting of guide plate top are in the seal receptacle of apron top, the guide plate with form the water conservancy diversion chamber between the apron, the upper end of apron is provided with the water inlet, the seal receptacle includes the manger plate cover, sets up the seal tube of manger plate cover lower extreme and sets up the annular seat of seal tube lower extreme, manger plate cover, seal tube and annular seat body coupling, the top of annular seat is provided with annular lid, be provided with sealing gasket between annular lid and the annular seat.
Preferably, the annular seat comprises a fixed plate attached to the surface of the cover plate, a support plate arranged above the water inlet and a connecting plate connected between the fixed plate and the support plate, wherein the fixed plate, the connecting plate and the support plate are connected in a Z shape, and the sealing gasket is arranged on the support plate.
Preferably, the upper end of the connecting plate is inclined outwards relative to the lower end of the connecting plate.
Preferably, the cover plate is provided with a positioning protrusion protruding upwards, and the lower surface of the fixing plate is provided with a positioning groove matched with the positioning protrusion.
Preferably, a cavity is formed between the supporting plate and the cover plate, and the cavity is annularly arranged outside the water inlet and communicated with the water inlet.
Preferably, the sealing cylinder is provided with a drain hole, and a baffle is arranged on the inner side of the sealing cylinder and is opposite to the drain hole.
Preferably, the baffle is an elastic piece, the lower end of the baffle is connected to the inner wall of the sealing cylinder, and the projection of the outer surface of the baffle in the axial direction is an arc-shaped surface arched outwards.
Preferably, a guide ring sleeve extending upwards is arranged on the outer side of the water inlet, and a gap is formed between the guide ring sleeve and the supporting plate.
Preferably, a pressurizing plate is arranged above the water inlet, the pressurizing plate is sleeved outside the guide ring sleeve, a central hole is formed in the pressurizing plate, a plurality of through holes are distributed in the circumference of the outer side of the central hole, the central hole and the through holes are both positioned in the water inlet, the aperture of the central hole is smaller than the inner diameter of the sealing gasket, and the aperture of the through hole is smaller than the aperture of the central hole.
Preferably, the through holes are inclined holes, and the center lines of the through holes are arranged in a front-back inclined manner along the tangential direction of the distribution circumference.
The utility model has the beneficial effects that:
according to the utility model, the water pumped out from the water outlet of the lower-stage impeller is completely blocked in the sealing seat and completely enters the upper-stage impeller by arranging the water blocking cover, so that the working efficiency of the vertical multistage centrifugal pump is greatly improved;
the water retaining cover, the sealing cylinder and the annular seat adopt an integrated structure, so that the assembly is convenient;
through set up sealing gasket between annular lid and annular seat, sealing gasket cooperates with the impeller, reduces axial leakage, improves pumping efficiency.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present utility model;
FIG. 2 is a schematic view showing the structure of a seal holder in embodiment 1 of the present utility model;
FIG. 3 is a top view of the seal holder of embodiment 1 of the present utility model;
FIG. 4 is an enlarged view of a portion of FIG. A;
FIG. 5 is a schematic structural view of embodiment 2 of the present utility model;
FIG. 6 is a schematic view showing the structure of the pressurizing plate in embodiment 2 of the present utility model;
in the figure: 1-deflector, 2-cover plate, 201-water inlet, 202-deflector ring sleeve, 203-positioning protrusion, 3-sealing seat, 301-water blocking cover, 302-sealing cylinder, 3021-water drain hole, 3022-baffle, 303-annular seat, 3031-fixing plate, 3032-connecting plate, 3033-supporting plate, 3034-positioning groove, 4-sealing gasket, 5-annular cover, 6-pull buckle, 7-pressurizing plate, 701-central hole and 702-through hole.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model, may be made by those skilled in the art after reading the present specification, are only protected by patent laws within the scope of the claims of the present utility model.
Example 1:
as shown in fig. 1-4, a flow guide assembly for a centrifugal pump, comprising: the baffle 1, set up the apron 2 in baffle 1 top and set up the sealing seat 3 in apron 2 top, the upper end of apron 2 is provided with water inlet 201, and the lower extreme of apron 2 is provided with the turn-up, and baffle 1 upper end is inserted and is established in the turn-up. A diversion cavity is formed between the diversion plate 1 and the cover plate 2, and the water inlet 201 is communicated with the diversion cavity. Wherein the baffle 1 and the cover plate 2 are both in a conical configuration.
A plurality of pull buckles 6 are arranged below the guide plate 1, and the guide assembly is connected with the water pumping section through the pull buckles 6.
As shown in fig. 2, the seal holder 3 includes a water blocking cover 301, a seal cylinder 302 provided at a lower end of the water blocking cover 301, and an annular holder 303 provided at a lower end of the seal cylinder 302, and the water blocking cover 301, the seal cylinder 302, and the annular holder 303 are integrally connected.
An annular cover 5 is arranged above the annular seat 303, and a sealing gasket 4 is arranged between the annular cover 5 and the annular seat 303.
The annular seat 303 comprises a fixed plate 3031 attached to the surface of the cover plate 2, a support plate 3033 arranged above the water inlet 201 and a connection plate 3032 connected between the fixed plate 3031 and the support plate 3033, wherein the fixed plate 3031, the connection plate 3032 and the support plate 3033 are connected in a Z shape, and the sealing gasket 4 is arranged on the support plate 3033.
Wherein the upper end of the connection plate 3032 is disposed at an outer inclination with respect to the lower end thereof such that when the annular cover 5 is covered on the annular seat 303, the side edges of the annular cover 5 can be folded inwardly against the connection plate 3032, thereby preventing the annular cover 5 from being separated from the annular seat 303.
A cavity is formed between the support plate 3033 and the cover plate 2, and the cavity is annularly arranged outside the water inlet 201 and is communicated with the water inlet 201.
The outside of the water inlet 201 is provided with a guide ring sleeve 202 extending upwards, and a gap is arranged between the upper end of the guide ring sleeve 202 and the supporting plate 3033. In this embodiment, the deflector collar 202 is a cylindrical tube.
As shown in fig. 4, the cover plate 2 is provided with an upward protruding positioning protrusion 203, the lower surface of the fixed plate 3031 is provided with a positioning groove 3034 matched with the positioning protrusion 203, and the positioning protrusion 203 and the positioning groove 3034 play roles in assembling and positioning the sealing seat 3 and the cover plate 2 and in sealing and preventing water from passing through the surface gap between the sealing seat 3 and the cover plate 2 so as to reduce the water pumping efficiency.
As shown in fig. 2 and 3, a drain hole 3021 is provided in the seal cylinder 302, a blocking piece 3022 is provided on the inner side of the seal cylinder 302, and the blocking piece 3022 faces the drain hole 3021.
Wherein the blocking piece 3022 is an elastic piece, the lower end of the blocking piece 3022 is connected to the inner wall of the sealing cylinder 302, and the projection of the outer surface of the blocking piece 3022 in the axial direction is an arc surface arched outwards.
In the water pumping process, water flows along with the impeller flowing in the water retaining cover 301 and the sealing cylinder 302, and flows through the baffle 3022, so that the baffle 3022 swings towards the inside of the drain hole 3021 due to different flow rates of the water flow on the inner side and the outer side of the baffle 3022, the drain hole 3021 is temporarily blocked, and water pumped out from the water outlet of the lower-stage impeller is completely blocked in the sealing seat 3 and completely enters the upper-stage impeller, so that the working efficiency of the vertical multistage centrifugal pump is greatly improved. When the impeller stops rotating, the water blocking cover 301 and the sealing cylinder 302 stop flowing, and at this time, the blocking piece 3022 resets under the action of the elastic force and is far away from the drainage hole 3021, so as to increase the drainage speed.
Example 2:
as shown in fig. 5 and 6, unlike embodiment 1, a pressurizing plate 7 is disposed above the water inlet 201, the pressurizing plate 7 is sleeved outside the guide ring sleeve 202, a central hole 701 is disposed on the pressurizing plate 7, a plurality of through holes 702 are circumferentially distributed on the outer side of the central hole 701, the central hole 701 and the through holes 702 are both located in the water inlet 201, the aperture of the central hole 701 is smaller than the inner diameter of the sealing gasket 4, and the aperture of the through hole 702 is smaller than the aperture of the central hole 701.
The through holes 702 are inclined holes, the central lines of the through holes 702 are arranged in a front-back inclined mode along the tangential direction of the distribution circumference, the inclined direction is consistent with the rotation direction of the impeller, and the inclined angle is 30-45 degrees. In the water pumping process, most of the water in the diversion cavity enters the sealing seat 3 through the central hole 701, and part of the water enters the sealing seat 3 through the inclined through hole 702, so that the water pumping device has the speed in the axial direction and the speed in the rotating direction, the water flow passing through the through hole 702 and the rotating water flow in the sealing seat 3 are smoother when being intersected, and the water pumping efficiency is improved.
Claims (10)
1. A baffle assembly for a centrifugal pump, comprising: guide plate (1), set up apron (2) and setting in guide plate (1) top are in sealing seat (3) of apron (2) top, guide plate (1) with form the water conservancy diversion chamber between apron (2), the upper end of apron (2) is provided with water inlet (201), its characterized in that, sealing seat (3) include manger plate cover (301), set up seal tube (302) and setting of manger plate cover (301) lower extreme are in annular seat (303) of seal tube (302) lower extreme, manger plate cover (301), seal tube (302) and annular seat (303) body coupling, the top of annular seat (303) is provided with annular lid (5), be provided with sealing gasket (4) between annular lid (5) and the annular seat (303).
2. A baffle assembly for a centrifugal pump according to claim 1, wherein: the annular seat (303) comprises a fixed plate (3031) attached to the surface of the cover plate (2), a supporting plate (3033) arranged above the water inlet (201) and a connecting plate (3032) connected between the fixed plate (3031) and the supporting plate (3033), the fixed plate (3031), the connecting plate (3032) and the supporting plate (3033) are connected in a Z shape, and the sealing gasket (4) is arranged on the supporting plate (3033).
3. A baffle assembly for a centrifugal pump according to claim 2, wherein: the upper end of the connecting plate (3032) is arranged in an outward inclined manner relative to the lower end of the connecting plate.
4. A baffle assembly for a centrifugal pump according to claim 3, wherein: the cover plate (2) is provided with a positioning protrusion (203) protruding upwards, and the lower surface of the fixed plate (3031) is provided with a positioning groove (3034) matched with the positioning protrusion (203).
5. A baffle assembly for a centrifugal pump according to claim 2, wherein: a cavity is formed between the supporting plate (3033) and the cover plate (2), and the cavity is annularly arranged outside the water inlet (201) and is communicated with the water inlet (201).
6. A baffle assembly for a centrifugal pump according to claim 1, wherein: the sealing cylinder (302) is provided with a drain hole (3021), a baffle (3022) is arranged on the inner side of the sealing cylinder (302), and the baffle (3022) is opposite to the drain hole (3021).
7. A baffle assembly for a centrifugal pump as set forth in claim 6, wherein: the baffle plate (3022) is an elastic plate, the lower end of the baffle plate (3022) is connected to the inner wall of the sealing cylinder (302), and the projection of the outer surface of the baffle plate (3022) in the axial direction is an arc-shaped surface arched outwards.
8. A baffle assembly for a centrifugal pump according to claim 1, wherein: the outside of water inlet (201) is provided with and is upwards extended water conservancy diversion ring cover (202), water conservancy diversion ring cover (202) with have the space between backup pad (3033).
9. A baffle assembly for a centrifugal pump as set forth in claim 8, wherein: the utility model discloses a water inlet, water inlet (201) top is provided with supercharging plate (7), supercharging plate (7) cover is established the water conservancy diversion ring cover (202) outside, be provided with centre bore (701) on supercharging plate (7), the outside circumference distribution of centre bore (701) has a plurality of through-holes (702), centre bore (701) and through-hole (702) all are located in water inlet (201), the aperture of centre bore (701) is less than the internal diameter of sealing gasket (4), the aperture of through-hole (702) is less than the aperture of centre bore (701).
10. A baffle assembly for a centrifugal pump as set forth in claim 9, wherein: the through holes (702) are inclined holes, and the central lines of the through holes (702) are arranged in a front-back inclined mode along the tangential direction of the distribution circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310830112.9A CN116576155A (en) | 2023-07-07 | 2023-07-07 | Flow guide assembly for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310830112.9A CN116576155A (en) | 2023-07-07 | 2023-07-07 | Flow guide assembly for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116576155A true CN116576155A (en) | 2023-08-11 |
Family
ID=87543435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310830112.9A Pending CN116576155A (en) | 2023-07-07 | 2023-07-07 | Flow guide assembly for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116576155A (en) |
-
2023
- 2023-07-07 CN CN202310830112.9A patent/CN116576155A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |