CN203130580U - Liquid flow prerotation preventing device for inlet of pump - Google Patents
Liquid flow prerotation preventing device for inlet of pump Download PDFInfo
- Publication number
- CN203130580U CN203130580U CN 201220560349 CN201220560349U CN203130580U CN 203130580 U CN203130580 U CN 203130580U CN 201220560349 CN201220560349 CN 201220560349 CN 201220560349 U CN201220560349 U CN 201220560349U CN 203130580 U CN203130580 U CN 203130580U
- Authority
- CN
- China
- Prior art keywords
- flange
- guide plate
- cyclone
- pump
- liquid stream
- 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 - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a liquid flow prerotation preventing device for an inlet of a pump. The liquid flow prerotation preventing device comprises a flange and a flow guiding device. The flange is arranged between a water inlet pipe and a pump body and is connected with the water inlet pipe and the pump body through bolts. A round through hole is formed in the center of the flange. The flow guiding device is arranged at the round through hole in the center of the flange. The liquid flow prerotation preventing device has the advantages of being capable of carrying out rectification on liquid flow which does not enter an impeller of the pump body and enabling the direction of the flow velocity of the liquid flow to accord with the flow direction of the liquid flow, being free from prerotation, simple in structure, convenient to install and strong in practicality, and saving manpower and material resources.
Description
Technical field
The utility model relates to a kind of rectifying device, particularly a kind of anti-pre-cyclone of liquid stream for pump inlet.
Background technique
Existing pumping unit arranges guide plate at pump housing inducer usually and prewhirls to prevent that the liquid miscarriage from giving birth to.For small-bore pump, the fluidised form that guide plate influences impeller inlet liquid easily is set, and casting inconvenience; For the heavy caliber pump, inlet only arranges a guide plate usually, and anti-effect of prewhirling is unsatisfactory.
The model utility content
The purpose of this utility model is to provide a kind of pump inlet liquid stream defence cyclone of pump of suitable different size, and in order to achieve the above object, the utility model is realized by the following technical solutions:
A kind of anti-pre-cyclone of liquid stream for pump inlet, this device comprises:
Be arranged on the flange between intake pipe and the pump housing, flange is connected by bolt with intake pipe and the pump housing, and flange center goes out to offer a manhole;
Be arranged on the flow guide device at the manhole place of flange center.
Described flow guide device is one to be arranged on the guide plate at the manhole place of flange center, and the guide plate direction is vertical with Flange Plane, and the guide plate center line is coaxial with the flange shaft axis, and guide plate is towards opposite with the liquid flow path direction.
In a preferred embodiment of the present utility model, described flow guide device is for being the rectangle guide plate that is arranged on two square crossings in manhole place of flange center, the rectangle guide plate direction of two square crossings is vertical with Flange Plane, the guide plate center line of two square crossings is coaxial with the flange shaft axis, and the guide plate of two square crossings is towards opposite with the liquid flow path direction.
In a preferred embodiment of the present utility model, the cross section of described guide plate is narrow streamlined in middle wide two.
In a preferred embodiment of the present utility model, flow guide device and flange form integrative-structure by welding.
The beneficial effects of the utility model are:
Carry out rectification to entering pump housing impeller liquid stream before, make the flow velocity direction of liquid stream consistent with the liquid stream flow direction, do not produce and prewhirl; Simple in structure and easy for installation, use manpower and material resources sparingly, practical.
Description of drawings
Fig. 1 is a kind of anti-pre-cyclone sectional view in axial direction of liquid stream for pump inlet described in the utility model.
Fig. 2 is that a kind of liquid stream for pump inlet described in the utility model is prevented a kind of embodiment of pre-cyclone.
Fig. 3 is that a kind of liquid stream for pump inlet described in the utility model is prevented the another kind of embodiment of pre-cyclone.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
As shown in Figure 1, flange 100 of the present utility model is arranged between input duct 80 and the pump housing pipeline 90, and input duct 80 is provided with flange 81, and pump housing pipeline 90 is provided with pump flange 91; Flange 100 along the circumferential direction offers bolt hole 101, and fixedlys connected with piping flange 81, pump flange 91 by bolt 70.
As shown in Figure 2, flange 100 centers offer a manhole 110, and feed flow flows from input duct 80 inflow pump pipelines 90; Manhole 110 centers vertically are provided with a rectangle guide plate 120, the cross section of guide plate 120 is the narrow streamlined structure in middle wide two, guide plate 120 forms integrative-structure with manhole 110 inwalls by welding, and rectangle guide plate 120 is towards opposite with the liquid flow path direction of arrow indication.
Be illustrated in figure 3 as second kind of embodiment of the present utility model, the difference of this mode of execution and first kind of mode of execution is, the cross guide plate 130 of guide plate for being intersected to form by two rectangle guide plates, cross guide plate 130 same with manhole 110 inwalls by welding formation integrative-structure, it is towards opposite with the liquid flow path direction of arrow indication.
Often have vortex when liquid enters input duct 80, the guide plate of this device carries out rectification to liquid, and it is consistent that flow rate of liquid direction and liquid stream are flowed to, and do not produce and prewhirl.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. the anti-pre-cyclone of liquid stream that is used for pump inlet is characterized in that, the anti-pre-cyclone of this liquid stream comprises:
Be arranged on the flange between intake pipe and the pump housing, described flange is connected by bolt with intake pipe and the pump housing, and described flange center goes out to offer a manhole;
Be arranged on the interior flow guide device of manhole of flange center.
2. a kind of liquid stream for pump inlet as claimed in claim 1 is prevented pre-cyclone, it is characterized in that, described flow guide device is one to be arranged on the rectangle guide plate at the manhole place of flange center, described rectangle guide plate direction is vertical with Flange Plane, rectangle guide plate center line is coaxial with the flange shaft axis, and the rectangle guide plate is towards opposite with the liquid flow path direction.
3. a kind of liquid stream for pump inlet as claimed in claim 1 is prevented pre-cyclone, it is characterized in that, described flow guide device is the rectangle guide plate that is arranged on two square crossings in manhole place of flange center, the rectangle guide plate direction of two square crossings is vertical with Flange Plane, the guide plate center line of two square crossings is coaxial with the flange shaft axis, and the guide plate of two square crossings is towards opposite with the liquid flow path direction.
4. as claim 2 or 3 described a kind of anti-pre-cyclone of liquid stream for pump inlet, it is characterized in that the cross section of described rectangle guide plate is narrow streamlined in middle wide two.
5. a kind of anti-pre-cyclone of liquid stream for pump inlet as claimed in claim 1 is characterized in that described flow guide device and described flange form integrative-structure by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220560349 CN203130580U (en) | 2012-10-29 | 2012-10-29 | Liquid flow prerotation preventing device for inlet of pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220560349 CN203130580U (en) | 2012-10-29 | 2012-10-29 | Liquid flow prerotation preventing device for inlet of pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130580U true CN203130580U (en) | 2013-08-14 |
Family
ID=48938561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220560349 Expired - Fee Related CN203130580U (en) | 2012-10-29 | 2012-10-29 | Liquid flow prerotation preventing device for inlet of pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130580U (en) |
-
2012
- 2012-10-29 CN CN 201220560349 patent/CN203130580U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20151029 |
|
| EXPY | Termination of patent right or utility model |