CN203463364U - Pump head of shield pump - Google Patents
Pump head of shield pump Download PDFInfo
- Publication number
- CN203463364U CN203463364U CN201320489736.0U CN201320489736U CN203463364U CN 203463364 U CN203463364 U CN 203463364U CN 201320489736 U CN201320489736 U CN 201320489736U CN 203463364 U CN203463364 U CN 203463364U
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- CN
- China
- Prior art keywords
- pump
- pump head
- canned motorpump
- runner
- head
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model provides a pump head of a shield pump, belongs to the technical field of pumps, and solves the problems that the existing pump head of the shield pump is small in inner cavity space, and the fluid resistance of the inner cavity wall is large. The pump head of the shield pump comprises a pump cavity, a liquid inlet passage communicated with the pump cavity and a liquid outlet passage. A recessed runner is formed in the pump cavity wall. The runner is spiral and communicated with the liquid outlet passage. Due to the fact that the recessed runner is formed in the inner cavity of the pump head and the runner is spiral and recessed, fluid resistance is reduced, the space of the inner cavity of the pump head is increased, and a vane with large width can be contained in the cavity.
Description
Technical field
The utility model belongs to pump technical field, relates to a kind of pump head of canned motorpump.
Background technique
Existing canned motorpump, comprise pump head, motor and support, pump head has pump chamber, feed pathway and liquid outlet channel, in pump chamber, be provided with impeller, motor comprises electric machine main shaft, be around in the rotor of electric machine main shaft and around the stator of rotor periphery, between stator and rotor, be provided with housing, this housing forms one and makes the space isolating between stator and rotor; Shell and the pump housing of stator are fixedly connected, and stator is communicated with pump head cavity with the space between rotor, and the rotating shaft of impeller connects with the rotor shaft of shield electric machine.Fluid enters into pump chamber from feed pathway, under impeller drives, obtains larger centrifugal force, finally from liquid outlet channel, discharges.Pump chamber inwall convection cell forms certain resistance.
Comparatively general pump head all adopts cylindric at present, the annular protrusion in pump head bottom with protrusion, this annular protrusion makes to form between pump chamber wall and annular protrusion a ring runner, the fluid that makes to enter in pump chamber more easily possesses centrifugal force, but because the existence of annular protrusion has reduced space in pump, and convection cell causes certain drag effect simultaneously.
The utility model patent that the application number of announcing as China is 201220275158.6, a kind of canned motorpump system for delivery of slurry, relates to dynamo-electric hydraulic pressure technical field, and what solve is the technical problem of avoiding mechanical seal to lose efficacy.This system comprises at least one canned motorpump, and a press water is for water unit; Described canned motorpump comprises shield electric machine, pump case, pump impeller; Described pump impeller is arranged in pump case, and coaxially affixed with the rotating shaft of shield electric machine, and the connecting part of rotating shaft and joiner arranges mechanical seal; The equal waterproof sealing of the staor winding of described shield electric machine and rotor iron core, the rotor cavity volume of shield electric machine is waterproof, and is provided with a sealing mouth of a river; Described joiner is provided with a flushing mouth of a river, and this internal orifice that rinses the mouth of a river is towards the rotating shaft of shield electric machine and the mechanical seal of joiner connecting part; Described press water is provided with the sealing water water-supplying mouth at each canned motorpump sealing mouth of a river of a connection for water unit, and connects the sparge water water-supplying mouth that each canned motorpump rinses the mouth of a river.The pump case of this structure is affixed through the housing of coupling and motor, between adjacent component, all pass through bolt nut fastening, cause assembly and disassembly comparatively loaded down with trivial details, if degree of adaptability is low, sealing effect will be received impact, and impeller space in pump case is less, the internal chamber wall convection cell of pump case causes larger resistance, has reduced the efficiency of canned motorpump.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of pump head that increases pump chamber space, reduces the canned motorpump of pump chamber wall convection cell resistance.
The purpose of this utility model can realize by following technical proposal: a kind of pump head of canned motorpump, it is characterized in that, and the pump head of this canned motorpump comprises pump chamber, the feed pathway being connected with pump chamber and liquid outlet channel; On described pump chamber wall, offer recessed runner, described runner is connected in the shape of a spiral and with liquid outlet channel.
Pump chamber is provided with the runner inwardly concaving, and has expanded the space of pump housing inner chamber, is more applicable to holding the blade working that width is larger, for it provides more spacious working environment; Runner is along pump chamber wall screw arrangement, and guiding fluid enters liquid outlet channel, has reduced the resistance of pump chamber wall convection cell.In common pump head, runner is the annular of sealing, not fluid is not directed to the path of liquid outlet channel, and fluid is under the effect of impeller and obtain centrifugal force, can still have segment fluid flow waiting time in the ring runner of sealing longer, waste the required electric energy of a large amount of wheel rotation; And the runner of this pump head twist, fluid obtains after centrifugal force in the effect through impeller, just, along the directed through liquid outlet channel mouth of runner, is not trapped in runner, to fluid formation obstruction below.
In the pump head of above-mentioned canned motorpump, described pump head is bowl-shape, and the bottom of bowl-shape pump head offers the water inlet that is communicated with feed pathway and pump chamber, and the sidepiece of bowl-shape pump head offers the osculum that is communicated with feed pathway and pump chamber.Fluid flows into from the intake tunnel of pump head, and the water inlet by bottom centre enters pump chamber, and impeller drives fluid to be drained into liquid outlet channel from the osculum of pump head sidewall.
In the pump head of above-mentioned canned motorpump, described flow channel cross-section is circular arc.The runner of circular arc and fluid friction power are little, can reduce the resistance of convection cell.
In the pump head of above-mentioned canned motorpump, the degree of depth of described runner is 1mm～2mm.
In the pump head of above-mentioned canned motorpump, on the inwall of described feed pathway and liquid outlet channel, be equipped with internal thread.Feed pathway and liquid outlet channel arrange internal thread, are conveniently connected with other pipeline threads.
In the pump head of above-mentioned canned motorpump, on described pump head, have along the outward extending joint of pump chamber wall, described joint ringwise and joint be provided with outside thread.Pump head is directly connected with the shell of motor, and the outside thread of joint can fix by the housing with female connecting sleeve and motor pump head.
In the pump head of above-mentioned canned motorpump, on described joint, offer can embedding sealing circle annular groove.Seal ring is inserted in annular groove, improve the sealing effect between pump head and electric machine casing.
In the pump head of above-mentioned canned motorpump, described pump head adopts brass material casting to form.
Compared with prior art, the inner chamber of the pump head of this canned motorpump is provided with the runner inwardly concaving, and runner screw arrangement, has reduced the resistance of convection cell; And runner indent, the space that has increased pump head cavity, can hold the blade of larger width.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pump head of this canned motorpump.
Fig. 2 be this canned motorpump pump head face structural representation.
Fig. 3 is the side-looking structural representation of the pump head of this canned motorpump.
Fig. 4 is the sectional structure schematic diagram of the pump head of this canned motorpump.
In figure, 1, pump chamber; 2, feed pathway; 3, liquid outlet channel; 4, runner; 5, water inlet; 6, osculum; 7, internal thread; 8, joint; 9, outside thread; 10, annular groove.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
The pump head of this canned motorpump is connected with connecting sleeve sealing with motor housing, is suitable for carrying precious liquid or is with radioactive liquid.As shown in Figure 1, Figure 2, Figure 3, Figure 4, the pump head of this canned motorpump comprises pump chamber 1, the feed pathway 2 being connected with pump chamber 1 and liquid outlet channel 3; On pump chamber 1 wall, offer recessed runner 4, runner 4 is connected in the shape of a spiral and with liquid outlet channel 3, and pump head adopts brass material casting to form.Compared with prior art, the canned motorpump of this pump head is housed, the quantity delivered of unit time inner fluid increases by 10～15% than common canned motorpump, and due to water passage surface drag reduction, and the surface friction drag that is subject to fluid and pump case affects and the electric energy that loses can reduce more than 5%.
Specifically, whole pump head is bowl-shape, and the bottom of bowl-shape pump head offers the water inlet 5 that is communicated with feed pathway 2 and pump chamber 1, and the sidepiece of bowl-shape pump head offers the osculum 6 that is communicated with feed pathway 2 and pump chamber 1.Runner 4 arranges in the shape of a spiral along pump chamber 1 wall, and the cross section of runner 4 is circular arc, and the degree of depth of runner 4 is 1mm～2mm.
On the inwall of feed pathway 2 and liquid outlet channel 3, be equipped with internal thread 7, be conveniently connected with other pipeline threads.On pump head, also have along the outward extending joint 8 of pump chamber 1 wall, joint 8 ringwise and joint 8 be provided with outside thread 9, the outside thread 9 of joint 8 can be tightly connected by the connecting sleeve with internal thread 7 housing of pump head and motor.For improving sealing effect, on joint 8, also offer can embedding sealing circle annular groove 10, the interior seal ring that arranges of annular groove 10.The sealing that leans of the housing of seal ring and stator, outside thread 9 mating reactions by connecting sleeve and the pump housing are by motor housing and the fixing sealing simultaneously of pump head.
During work, fluid enters into pump chamber 1 from feed pathway 2, and under the drive of impeller, fluid, along the acceleration of spiraling of spiral helicine runner 4, finally enters liquid outlet channel 3 and discharges canned motorpump from osculum 6.Runner 4 the resistance that has reduced pump chamber 1 wall convection cell is set, the space that has simultaneously increased pump chamber 1, can hold the blade of larger width.
The pump head of this pipeline canned motor pump and motor housing just can be realized the sealing to pump chamber 1 without playing glue processing, have avoided industrial glue to the pollution of conveying liquid and the murder by poisoning to human body, have increased the durability of sealing.Installation and removal simultaneously also more for convenience, have improved the working efficiency of safeguarding.Structure is also comparatively simple, easy to make, and required cost is low.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used the terms such as pump chamber 1, feed pathway 2, liquid outlet channel 3, runner 4, water inlet 5, osculum 6, internal thread 7, joint 8, outside thread 9, annular groove 10 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (8)
1. a pump head for canned motorpump, is characterized in that, the pump head of this canned motorpump comprises pump chamber (1), the feed pathway (2) being connected with pump chamber (1) and liquid outlet channel (3); On described pump chamber (1) wall, offer recessed runner (4), described runner (4) is connected in the shape of a spiral and with liquid outlet channel (3).
2. the pump head of canned motorpump according to claim 1, it is characterized in that, described pump head is bowl-shape, the bottom of bowl-shape pump head offers the water inlet (5) that is communicated with feed pathway (2) and pump chamber (1), and the sidepiece of bowl-shape pump head offers the osculum (6) that is communicated with feed pathway (2) and pump chamber (1).
3. the pump head of canned motorpump according to claim 2, is characterized in that, described runner (4) cross section is circular arc.
4. the pump head of canned motorpump according to claim 3, is characterized in that, the degree of depth of described runner (4) is 1mm～2mm.
5. according to the pump head of canned motorpump described in claim 1 or 2 or 3 or 4, it is characterized in that, on the inwall of described feed pathway (2) and liquid outlet channel (3), be equipped with internal thread (7).
6. the pump head of canned motorpump according to claim 5, is characterized in that on described pump head, having along the outward extending joint of pump chamber (1) wall (8), described joint (8) ringwise and joint (8) be provided with outside thread (9).
7. the pump head of canned motorpump according to claim 6, is characterized in that, on described joint (8), offer can embedding sealing circle annular groove (10).
8. the pump head of canned motorpump according to claim 7, is characterized in that, described pump head adopts brass material casting to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320489736.0U CN203463364U (en) | 2013-08-12 | 2013-08-12 | Pump head of shield pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320489736.0U CN203463364U (en) | 2013-08-12 | 2013-08-12 | Pump head of shield pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463364U true CN203463364U (en) | 2014-03-05 |
Family
ID=50175731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320489736.0U Withdrawn - After Issue CN203463364U (en) | 2013-08-12 | 2013-08-12 | Pump head of shield pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463364U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398022A (en) * | 2013-08-12 | 2013-11-20 | 浙江威格泵业有限公司 | Shield pump head |
-
2013
- 2013-08-12 CN CN201320489736.0U patent/CN203463364U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398022A (en) * | 2013-08-12 | 2013-11-20 | 浙江威格泵业有限公司 | Shield pump head |
| CN103398022B (en) * | 2013-08-12 | 2016-06-01 | 浙江威格泵业有限公司 | The pump head of a kind of canned-motor pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20160601 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20160601 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |