CN202082130U - Prepositive water inlet backflow device of centrifugal pump - Google Patents
Prepositive water inlet backflow device of centrifugal pump Download PDFInfo
- Publication number
- CN202082130U CN202082130U CN2011201318600U CN201120131860U CN202082130U CN 202082130 U CN202082130 U CN 202082130U CN 2011201318600 U CN2011201318600 U CN 2011201318600U CN 201120131860 U CN201120131860 U CN 201120131860U CN 202082130 U CN202082130 U CN 202082130U
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- CN
- China
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- shaped
- base shell
- water inlet
- diffusion pipe
- casing body
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- Expired - Lifetime
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Abstract
A prepositive water inlet backflow device of a centrifugal pump relates to the centrifugal pump, includes a pump body water inlet, and is characterized in that a backflow device has butt joint with screw threads of a pump body water inlet pipe, and comprises an upper casing body, a lower casing body, a flow guide frustum, and a bidirectional diffusion pipe; base casings of the upper casing body and the lower casing body are symmetrical in shape; a circumferential groove is arranged on the circumference of the lower end surface of the upper base casing, and a circumferential boss of the lower base casing is sleeved in the corresponding groove of the upper base casing in the manner of close fit, thereby forming the combined casing body; an L-shaped flow channel cavity and a long cylindrical cylinder cavity separated by an L-shaped separation plate are formed in the inner cavity of the combined casing body; the bidirectional diffusion pipe is fixed in a center hole of the L-shaped separation plate; a flange plate body of the flow guide frustum is nested and fixed in a left wall step blind hole of the combined casing body; and a water inlet and a water outlet are arranged at the top of the L-shaped flow channel cavity and the bottom of the cylinder cavity respectively. The device has the advantages that water flows back through the L-shaped flow channel cavity, the bidirectional diffusion pipe and the cylinder cavity; the direct flow state is changed; and the noise is lowered.
Description
Technical field:
The utility model relates to the preposition water inlet reflux of dried up pump, particularly a kind of dried up pump.
Background technique:
The centrifugal pump water intake offers axial hole or axial disjunctor tubular body water intake for the pump chamber front cover, and this water intake pipe thread is connected with water source tube implements pump water.Because these water intake current axially fling pump chamber, thereby the noise that water flow impact pressure produces is very big, influences surrounding enviroment.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned defective, and a kind of preposition water inlet reflux of dried up pump is provided.
Scheme of the present utility model is: comprise pump housing water intake, it is characterized in that: reflux of butt joint on pump housing intake pipe screw thread, reflux is made up of upper shell, lower shell body, water conservancy diversion frustum, directional diffusion pipe, the base shell of upper shell, lower shell body is a symmetric shape, top base shell lower end surface ring is provided with all grooves of ring week, bottom base shell upper-end surface is provided with corresponding ring week boss, and all boss drive fits of bottom base girdle are enclosed within and form the combination housing in the top base shell respective slot; The sectional casing intracoelomic cavity forms the L shaped flow passage chamber in the rectangle frame cross section of being separated by together L shaped dividing plate and the cylinder chamber of long tubular, L shaped dividing plate is central to be formed by two center through hole that semicircle is involutory, on described center through hole inwall, form an annular groove, form a central stepped blind hole on the correspondence combination housing left side wall of described center through hole; On the diapire of bottom base shell cylinder chamber, downward disjunctor tubular body that extends, disjunctor tubular body that extends upwards on the roof of the initial end of the L shaped flow passage chamber transverse flow channels of top base shell as water intake as water outlet; The water conservancy diversion frustum is shaped as cavity taper that has capping of flange disk body disjunctor extension to the right, and the flange disk body fit of water conservancy diversion frustum is fixed in the wall step blind hole of a combination housing left side; Cirque body of left part tubular body cylindrical radial outward disjunctor extension in the directional diffusion pipe, described cirque body is linked in the annular groove of the L shaped dividing plate of combination housing, the directional diffusion pipe left side mouth of pipe is in water conservancy diversion frustum front end cavity taper peripheral space, cylindrical uniform radially disjunctor in directional diffusion pipe right part extends four and locatees trapezoidal gussets, locatees trapezoidal gusset exterior edge face and fits with combination housing cylinder chamber inwall contact-type.
Advantage of the present utility model is: current after L shaped flow passage chamber, directional diffusion pipe, cylinder chamber reflux, just enter the pump housing by water outlet in reflux, changed dc state, reduce noise.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment:
The utility model structure comprises pump housing water intake 4, it is characterized in that: reflux of butt joint on pump housing intake pipe screw thread, reflux is made up of upper shell, lower shell body, water conservancy diversion frustum 1, directional diffusion pipe 3, the base shell of upper shell, lower shell body is a symmetric shape, top base shell 2 lower end surfaces ring is provided with all grooves of ring week, bottom base shell 6 upper-end surfaces are provided with corresponding ring week boss 7, and all boss 7 drive fits of bottom base shell 6 rings are enclosed within and form the combination housing in top base shell 2 respective slot; The sectional casing intracoelomic cavity forms the L shaped flow passage chamber in the rectangle frame cross section of being separated by together L shaped dividing plate and the cylinder chamber of long tubular, L shaped dividing plate is central to be formed by two center through hole that semicircle is involutory, on described center through hole inwall, form an annular groove, form a central stepped blind hole on the correspondence combination housing left side wall of described center through hole; On the diapire of bottom base shell 6 cylinder chambers, downward disjunctor tubular body that extends, disjunctor tubular body that extends upwards on the roof of the initial end of top base shell 2L shape flow passage chamber transverse flow channels as water intake 4 as water outlet 5; Water conservancy diversion frustum 1 is shaped as cavity taper that has capping of flange disk body disjunctor extension to the right, and the flange disk body fit of water conservancy diversion frustum 1 is fixed in the wall step blind hole of a combination housing left side; Cirque body of left part tubular body cylindrical radial outward disjunctor extension in the directional diffusion pipe 3, described cirque body is linked in the annular groove of the L shaped dividing plate of combination housing, the directional diffusion pipe 3 left mouths of pipe are in water conservancy diversion frustum 1 front end cavity taper peripheral space, the uniform radially disjunctor of directional diffusion pipe 3 right part cylindricals extends four and locatees trapezoidal gussets, locatees trapezoidal gusset exterior edge face and fits with combination housing cylinder chamber inwall contact-type.
Flowing water is done commutation through L shaped flow passage chamber earlier and is flowed, and the back enters directional diffusion pipe 3 by the torus space that directional diffusion pipe 3 and water conservancy diversion frustum 1 form, and enters cylinder chamber again after expanding stream, and the backflow break-in of turning left again just can enter water outlet 5.Multiple tracks flows to change and forms the backflow decrease of noise functions.
Claims (1)
1. the preposition water inlet reflux of a dried up pump, comprise pump housing water intake (4), it is characterized in that: reflux of butt joint on pump housing intake pipe screw thread, reflux is made up of upper shell, lower shell body, water conservancy diversion frustum (1), directional diffusion pipe (3), the base shell of upper shell, lower shell body is a symmetric shape, top base shell (2) lower end surface ring is provided with all grooves of ring week, bottom base shell (6) upper-end surface is provided with corresponding ring week boss (7), and bottom base shell (6) encircles all boss (7) drive fit and is enclosed within formation combination housing in top base shell (2) respective slot; The sectional casing intracoelomic cavity forms the L shaped flow passage chamber in the rectangle frame cross section of being separated by together L shaped dividing plate and the cylinder chamber of long tubular, L shaped dividing plate is central to be formed by two center through hole that semicircle is involutory, on described center through hole inwall, form an annular groove, form a central stepped blind hole on the correspondence combination housing left side wall of described center through hole; On the diapire of bottom base shell (6) cylinder chamber, downward disjunctor tubular body that extends, disjunctor tubular body that extends upwards on the roof of the initial end of the L shaped flow passage chamber transverse flow channels of top base shell (2) as water intake (4) as water outlet (5); Water conservancy diversion frustum (1) is shaped as cavity taper that has capping of flange disk body disjunctor extension to the right, and the flange disk body fit of water conservancy diversion frustum (1) is fixed in the wall step blind hole of a combination housing left side; Cirque body of left part tubular body cylindrical radial outward disjunctor extension in the directional diffusion pipe (3), described cirque body is linked in the annular groove of the L shaped dividing plate of combination housing, the left mouth of pipe of directional diffusion pipe (3) is in water conservancy diversion frustum (1) front end cavity taper peripheral space, cylindrical uniform radially disjunctor in directional diffusion pipe (3) right part extends four and locatees trapezoidal gussets, locatees trapezoidal gusset exterior edge face and fits with combination housing cylinder chamber inwall contact-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201318600U CN202082130U (en) | 2011-04-28 | 2011-04-28 | Prepositive water inlet backflow device of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201318600U CN202082130U (en) | 2011-04-28 | 2011-04-28 | Prepositive water inlet backflow device of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202082130U true CN202082130U (en) | 2011-12-21 |
Family
ID=45342760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201318600U Expired - Lifetime CN202082130U (en) | 2011-04-28 | 2011-04-28 | Prepositive water inlet backflow device of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202082130U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759665A (en) * | 2016-11-30 | 2017-05-31 | 华北水利水电大学 | Combination waterpower fairing under pumping plant intake pool ultra low water level |
| CN111828305A (en) * | 2020-08-28 | 2020-10-27 | 唐慈津 | Water pump and water inlet mechanism thereof |
-
2011
- 2011-04-28 CN CN2011201318600U patent/CN202082130U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759665A (en) * | 2016-11-30 | 2017-05-31 | 华北水利水电大学 | Combination waterpower fairing under pumping plant intake pool ultra low water level |
| CN106759665B (en) * | 2016-11-30 | 2023-04-07 | 华北水利水电大学 | Combined hydraulic rectifying device under ultralow water level of pump station water inlet pool |
| CN111828305A (en) * | 2020-08-28 | 2020-10-27 | 唐慈津 | Water pump and water inlet mechanism thereof |
| CN111828305B (en) * | 2020-08-28 | 2022-06-24 | 京鼎工程建设有限公司 | Water pump and water inlet mechanism thereof |
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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 |
Granted publication date: 20111221 |
|
| CX01 | Expiry of patent term |