CN106968983A - A kind of choma easy to install for being used to reduce leakage - Google Patents
A kind of choma easy to install for being used to reduce leakage Download PDFInfo
- Publication number
- CN106968983A CN106968983A CN201710355574.4A CN201710355574A CN106968983A CN 106968983 A CN106968983 A CN 106968983A CN 201710355574 A CN201710355574 A CN 201710355574A CN 106968983 A CN106968983 A CN 106968983A
- Authority
- CN
- China
- Prior art keywords
- choma
- elastic buckle
- install
- easy
- reduce leakage
- 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.)
- Granted
Links
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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
-
- 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
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps 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 invention belongs to centrifugal pump field, and in particular to a kind of choma easy to install for being used to reduce leakage, and the choma is provided with Elastic buckle, and the centrifugal pump body is provided with the neck being engaged with the Elastic buckle, and the Elastic buckle constitutes interference with neck and is connected.The beneficial effects of the invention are as follows：1st, choma is provided with Elastic buckle, and centrifugal pump body is provided with the neck being engaged with the Elastic buckle, and choma can not utilize screw, and rely on Elastic buckle and the interference connection of neck and the elastic deformation of Elastic buckle to reach the effect of fixed choma；2nd, choma is provided with Elastic buckle, can prevent the axial movement of choma, and choma is provided with positioning boss, can prevent the circumferential movement of choma.
Description
Technical field
The invention belongs to centrifugal pump field, and in particular to a kind of choma easy to install for being used to reduce leakage.
Background technology
Choma is also sealing ring, typically exists on centrifugal pump.Choma be divided into preoral loop (be located at suction eye at) and
Choma (be located at wheel backface at) afterwards.Preoral loop separates pump inner high voltage area and low-pressure area, prevents liquid from being flowed in large quantities from higher-pressure region
To low-pressure area, that is, prevent high-pressure fluid from flowing to suction eye from impeller ante-chamber, seal.Meanwhile, choma also functions to resistance to
Mill is acted on, it is to avoid the damage of impeller and pump case.Most of centrifugal pump has pump housing choma.
For general centrifugal pump, the choma generally used now is typically screwed on the pump housing and impeller.It is this
Mounting means needs certain screw number, and I＆M is all comparatively laborious；Choma is all to be located at the pump housing to inhale with impeller
Between porch, a straight gap between produces flow resistance, so as to reach the effect for preventing backflow.But, it is this
Structure can not completely prevent backflow, it can be found that still some fluid enters leaf by gap in reality production
Suction inlet is taken turns, main flow is upset, and cause volumetric loss；In addition, the choma of general structure only plays sealing and wear-resisting, it is located at
The outside of suction eye, the balance aspect for axial force is not acted on, so can only be by other structures are come balancing axial
Power.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of choma for centrifugal pump, fixed without screw
And it is convenient to install and maintain.
The invention provides following technical scheme：
A kind of choma easy to install for being used to reduce leakage, the choma is provided with Elastic buckle, the centrifugal pump body
Provided with the neck being engaged with the Elastic buckle, the Elastic buckle constitutes interference with neck and is connected.
It is preferred that, the choma inwall to the length at the top of Elastic buckle is H, the choma inwall to Elastic buckle root
Length be h, the h be H 50% -80%.
It is preferred that, the section of the Elastic buckle is hook-shaped.
It is preferred that, the quantity of the Elastic buckle is 2-6.
It is preferred that, the choma is integrated part with Elastic buckle, and the choma includes fixed part and installation portion, the elasticity
Buckle is located on installation portion and tilted towards impeller direction.
It is preferred that, inclined angle is 2-8 degree.
It is preferred that, positioning boss is additionally provided with the choma, the centrifugal pump body is provided with and the positioning boss phase
The locating slot of cooperation.
It is preferred that, the positioning boss is 1.
It is preferred that, the choma uses labyrinth seal or helixseal.
It is preferred that, the choma fixed part in the seal clearance formed on the inside of centrifugal pump impeller suction inlet with being provided with labyrinth
Sealing or helixseal.
The beneficial effects of the invention are as follows：
1st, choma is provided with Elastic buckle, and centrifugal pump body is provided with the neck being engaged with the Elastic buckle, choma
Screw can not be utilized, and relies on Elastic buckle and the interference connection of neck and the elastic deformation of Elastic buckle to reach fixation
The effect of choma；
2nd, choma is provided with Elastic buckle, can prevent the axial movement of choma, and choma is provided with positioning boss, can hindered
The circumferential movement of seam ring；
3rd, seal clearance is located on the inside of centrifugal pump impeller suction inlet, compared to can make centrifugal pump protecgulum for more general choma
A compression area increase part for plate, the balance for axial force has certain effect；
The 4th, labyrinth seal or helixseal are set in seal clearance, and the resistance in the gap that such sealing is formed is greater than
The resistance in straight gap, makes capacity of returns smaller；And if helixseal, while a pump action can also be produced, make gap
The sealing liquid boosting at place, balances by sealed pressure drop, so as to prevent backflow, reaches better seal effect；And due to this mouth
The seal clearance that ring is formed be in the inner side of suction eye so that can make front shroud compression area increase a part, it is right
It can be played a role in the balance of axial force.
Brief description of the drawings
Fig. 1 is centrifugal pump structure schematic diagram；
Fig. 2 is the enlarged drawing of A in Fig. 1；
Fig. 3 is choma sectional view；
Fig. 4 is neck schematic diagram in centrifugal pump；
Fig. 5 is choma side view.
The implication marked in accompanying drawing is as follows：
10- centrifugal pump 11- neck 12- impeller 20- choma 21- Elastic buckle 22- positioning boss 23- fixed parts
24- installation portion 25- seal clearances
Embodiment
The present invention is illustrated with reference to specific embodiment.
As shown in Fig. 1,2,3 and 4, a kind of choma easy to install for being used to reduce leakage, choma 20 is provided with Elastic buckle 21,
The pump housing of centrifugal pump 10 is provided with the neck 11 being engaged with Elastic buckle 21, and Elastic buckle 21 constitutes interference with neck 11 and is connected,
Diameter small 0.1-1mm of the diameter of neck 11 than choma 20.Choma 20 can not utilize screw, and rely on Elastic buckle 21 and card
The interference connection of groove 11 and the elastic deformation of Elastic buckle 21 reach the effect of fixed choma 20；
It is H, the inwall of choma 20 to bullet further to optimize the length at the top of above-described embodiment, the inwall of choma 20 to Elastic buckle
Property buckle root length be h, h is 50%-the 80% of H, it is ensured that the intensity requirement of choma 20, and the section of choma 20 is
Hook-shaped, hook-shaped connection to be made even closer, the quantity of Elastic buckle 21 is 2-6, prevents the axial float of choma 20.
Further optimize above-described embodiment, choma 20 is integrated part with Elastic buckle 21, and choma 20 is with Elastic buckle 21
Integral piece, choma 20 includes fixed part 23 and installation portion 24, and Elastic buckle 21 is located on installation portion 24 and towards the direction of impeller 12
Tilt, the angle of preferred angled is 2-8 degree, and during installation, the Elastic buckle 21 on choma 20 is against on neck 11, firmly one
Pressure, you can choma 20 is installed in neck 11, after installation, Elastic buckle 21 it is vertical and with the secure fit of neck 11, in perpendicular
The Elastic buckle 21 of straight state can produce screen resilience, and screen resilience passes to fixed part 23 by installation portion 24 so that fixed part 23
By the power towards seal clearance 25, so as to seal even closer.
Further optimize above-described embodiment, as shown in figure 5, positioning boss 22 is additionally provided with choma 20, the pump housing of centrifugal pump 10
Provided with the locating slot (not shown) being engaged with positioning boss 22, the circumferential movement of choma 20 can be effectively prevented, preferably
, positioning boss is 1.
Further optimize above-described embodiment, the fixed part 23 of choma 20 is formed with the suction inlet of 10 impeller of centrifugal pump 12 inner side
Labyrinth seal or helixseal are provided with seal clearance 25.During using labyrinth seal, fixed part 23 is towards seal clearance 25
The side is set to zigzag, and the resistance in the gap that labyrinth seal or helixseal are formed is greater than the resistance in straight gap, made back
Flow is smaller；And if helixseal, while a pump action can also be produced, the sealing liquid of gap location is boosted, balance
By sealed pressure drop, so as to prevent backflow, better seal effect is reached；And the seal clearance formed by this choma
It is that, in the inner side of suction eye, so that the compression area of front shroud can be made to increase a part, the balance for axial force can rise
To certain effect.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to foregoing reality
Apply example the present invention is described in detail, for those skilled in the art, it still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic.All essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (9)
1. a kind of choma easy to install for being used to reduce leakage, it is characterised in that the choma (20) is provided with Elastic buckle (21),
Centrifugal pump (10) pump housing is provided with the neck (11) that is engaged with the Elastic buckle (21), the Elastic buckle (21) with
Neck (11) constitutes interference connection.
2. a kind of choma easy to install for being used to reduce leakage according to claim 1, it is characterised in that the choma (20)
Length at the top of inwall to Elastic buckle is H, and the length of choma (20) inwall to Elastic buckle root is h, and the h is H
50% -80%.
3. a kind of choma easy to install for being used to reduce leakage according to claim 1, it is characterised in that the Elastic buckle
(21) section is hook-shaped.
4. a kind of choma easy to install for being used to reduce leakage according to claim 1, it is characterised in that the Elastic buckle
(21) quantity is 2-6.
5. a kind of choma easy to install for being used to reduce leakage according to claim 1, it is characterised in that the choma (20)
Part is integrated with Elastic buckle (21), the choma (20) includes fixed part (23) and installation portion (24), the Elastic buckle
(21) it is located on installation portion (24) and is tilted towards impeller (12) direction.
6. a kind of choma easy to install for being used to reduce leakage according to claim 5, it is characterised in that inclined angle is
2-8 degree.
7. a kind of choma easy to install for being used to reduce leakage according to claim 1, it is characterised in that the choma (20)
On be additionally provided with positioning boss (22), centrifugal pump (10) pump housing is provided with the positioning being engaged with the positioning boss (22)
Groove.
8. a kind of choma easy to install for being used to reduce leakage according to claim 7, it is characterised in that the positioning boss
(22) it is 1.
9. a kind of choma easy to install for being used to reduce leakage according to claim 5, it is characterised in that the choma (20)
In the seal clearance (25) formed on the inside of fixed part (23) and centrifugal pump (10) impeller (12) suction inlet provided with labyrinth seal or
Person's helixseal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710355574.4A CN106968983B (en) | 2017-05-19 | 2017-05-19 | Easy-to-install collar for reducing leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710355574.4A CN106968983B (en) | 2017-05-19 | 2017-05-19 | Easy-to-install collar for reducing leakage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106968983A true CN106968983A (en) | 2017-07-21 |
| CN106968983B CN106968983B (en) | 2023-10-13 |
Family
ID=59326023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710355574.4A Active CN106968983B (en) | 2017-05-19 | 2017-05-19 | Easy-to-install collar for reducing leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106968983B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113144505A (en) * | 2021-04-20 | 2021-07-23 | 嘉兴淘玛特体育文化传播有限公司 | Luminous skipping rope and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110064566A1 (en) * | 2008-05-15 | 2011-03-17 | Uwe Wuerdig | Apparatus for impeller sealing in centrifugal pumps |
| CN202056063U (en) * | 2011-05-10 | 2011-11-30 | 安徽卧龙泵阀有限责任公司 | Corrosion-resistant magnetic pump capable of conveying medium containing particles |
| CN103062104A (en) * | 2011-10-24 | 2013-04-24 | 山东双轮股份有限公司 | Sealing device of liquid pump |
| CN103790856A (en) * | 2012-10-29 | 2014-05-14 | 山东双轮股份有限公司 | Seal structure of pump sealing ring |
| CN206943076U (en) * | 2017-05-19 | 2018-01-30 | 合肥工业大学 | A kind of choma easy to install for being used to reduce leakage |
-
2017
- 2017-05-19 CN CN201710355574.4A patent/CN106968983B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110064566A1 (en) * | 2008-05-15 | 2011-03-17 | Uwe Wuerdig | Apparatus for impeller sealing in centrifugal pumps |
| CN202056063U (en) * | 2011-05-10 | 2011-11-30 | 安徽卧龙泵阀有限责任公司 | Corrosion-resistant magnetic pump capable of conveying medium containing particles |
| CN103062104A (en) * | 2011-10-24 | 2013-04-24 | 山东双轮股份有限公司 | Sealing device of liquid pump |
| CN103790856A (en) * | 2012-10-29 | 2014-05-14 | 山东双轮股份有限公司 | Seal structure of pump sealing ring |
| CN206943076U (en) * | 2017-05-19 | 2018-01-30 | 合肥工业大学 | A kind of choma easy to install for being used to reduce leakage |
Non-Patent Citations (1)
| Title |
|---|
| 牟介刚;苏苗印;张孝风;郑水华;金建波;赵永攀;: "叶轮口环间隙对农用离心泵汽蚀性能的影响", 农机化研究, no. 11, pages 25 - 29 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113144505A (en) * | 2021-04-20 | 2021-07-23 | 嘉兴淘玛特体育文化传播有限公司 | Luminous skipping rope and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106968983B (en) | 2023-10-13 |
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| GR01 | Patent grant |