CN202065230U - Paddle automatic balancing centrifugal seal pump - Google Patents
Paddle automatic balancing centrifugal seal pump Download PDFInfo
- Publication number
- CN202065230U CN202065230U CN201120040162XU CN201120040162U CN202065230U CN 202065230 U CN202065230 U CN 202065230U CN 201120040162X U CN201120040162X U CN 201120040162XU CN 201120040162 U CN201120040162 U CN 201120040162U CN 202065230 U CN202065230 U CN 202065230U
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- pump
- balance
- oar formula
- impeller
- propeller
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Abstract
A paddle automatic balancing centrifugal seal pump mainly includes a cylindrical bearing, a bearing box body, a pump shaft, a parking closing device, an impeller, a pump cover, a balance plate, a pump housing, an impeller nut, a stud nut and a balance pressure relief device as well as a paddle secondary impeller, a paddle balancing disc secondary impeller and a sealing and flushing device. The utility model has the advantages that the paddle automatic balancing centrifugal seal pump is convenient to maintain, has long service life and excellent sealing performance, and is suitable for conveying multiple highly-corrosive crystalline particle-contained chemical mediums, and the like.
Description
Technical field the utility model relates to the mechanical seal pump-unit, concrete relates to a kind of novel oar formula automatic balance centrifugation seal pump.
Background technique the utility model relates to a kind of canned pump, particularly is applied to a kind of oar formula automatic balance centrifugation seal pump of industries such as metallurgy, petrochemical industry, nuclear power.In the production process of above-mentioned industry, need to use pump with mechanical seal to carry some chemical liquid media, but in the real-world operation process, these chemical liquids are easily in the sealing surface crystallization gasification that scabs, generates heat, form dry friction, perhaps cause inlet pressure to change, moment mechanical seal device damage, cause device damage, the maintenance expenses height is unfavorable for saving production cost, and chemical industry solutions leaks simultaneously, therefore befouling environment is necessary the centrifugal sealing pump of development of new.
The defective that summary of the invention exists in view of prior art, the purpose of this utility model are a kind of easy to maintenance, long service life, sealability excellence will be provided, be applicable to and carry the strong oar formula automatic balance centrifugation seal pump that contains the crystalline particle chemical medium of various corrosivity.
For achieving the above object, the utility model comprises that mainly cylindrical bearing, bearing housing, pump shaft, parking locking device, impeller, pump cover, balance plate, pump case, impeller nut, stud nut, balance pressure relief device constitute; The utility model also comprises oar formula sub-propeller, oar formula Balance disc sub-propeller and sealflushes device.
A kind of oar formula automatic balance centrifugation seal pump, it is characterized in that: cylindrical bearing is embedded in position, rear and front end in the bearing housing, pump shaft is installed in the bearing housing, pump shaft is position, parking confined area in leading to the pump intermediate support, be provided with the static seal seat, the motive sealing seat, be provided with in the motive sealing seat spring is installed, the V-seal ring, the motive sealing seat is outside equipped with centrifugal son, after installing sub-propeller, the pump shaft upper sleeve through installs pump cover one, then oar formula Balance disc sub-propeller is installed at the axle upper sleeve through, balance plate, install pump cover two, installing blade impeller, tight behind the choma with impeller nut rotation edge, pump case is tightened with rotary connection of stud nut with intermediate support and bearing housing, and installation prepares the balance pressure relief device and sealflushes device.
Described balance pressure relief device one end is connected with the pressure releasing chamber of pump case central authorities, and the other end is communicated with pump intake.
Described sub-propeller adopts oar formula structure.
Described Balance disc sub-propeller adopts oar formula structure.
The described device of sealflushing is communicated with oar formula sub-propeller place chamber, the pressure control table is set sealflushing on the device, so that control is towards the pressure size of trickle.
Core technology is as follows:
The working principle of centrifugal pump: impeller is installed in the pump case, and be fastened on the pump shaft, pump shaft is directly driven by motor, pump case central authorities have the pressure releasing chamber C place to be communicated with pump intake by balance pressure release suction line, and C place liquid medium is arranged to inlet through the liquid medium that balance pressure release suction line enters on the pump case; Before pump startup, fill the liquid medium that is transferred in the pump case, start the back impeller and drive high speed rotating by axle, interlobate liquid medium also must be along with rotation, under action of centrifugal force, liquid medium is thrown to outer rim from the impeller center and the common bluebeard gets energy, enter in the volute pump case to leave impeller outer edge at a high speed, centrifugal pump relies on rotary blade that the effect of liquid medium is passed to liquid medium to the mechanical energy of prime mover, because the effect liquid medium of centrifugal pump flows to the process of outlet from impeller inlet, the discharge of liquid medium and form vacuum or low pressure, liquid medium in the priming reservoir is under the effect of liquid level pressure (barometric pressure), be pressed into the import of impeller, so the impeller that is rotating just constantly sucks and the drain medium continuously.
The automatically balancing axial force principle: the choma diameter equates that with top to the vertical area of impeller outer diameter front and rear cover plate pressure is identical, pressure balance.The choma diameter to the impeller diameter of axle, forms two balance cylinders of A, B with the bottom before and after balance plate.The Balance disc diameter is greater than the choma diameter, and then A chamber total pressure produces thrust in Balance disc greater than B chamber total pressure, B chamber high-pressure liquid medium enters the A chamber by throttle clearance b, push Balance disc open an axial clearance a, the A chamber is communicated with pressure release with pressure releasing chamber C, until A, B two Room total pressure balances.Pressure releasing chamber C liquid is communicated with pump intake by being equilibrated at pressure relief pipe.
The centrifugal seal principle: sub-propeller back side back blades produces the centrifugal seal back pressure, with the inlet pressure balance, reaches sealing effect.
Automatic-balancing centrifugal seal principle: Balance disc and oar formula sub-propeller are united two into one, be combined as a whole dexterously, promptly simplify the structure, triple purposes have been reached again: can automatically balancing axial force, the centrifugal seal inlet pressure is improved enlarge using scope, and oar formula structure effectively reduces the chemical liquid crystallization in the real-world operation process.
After adopting such scheme, compare with existing canned pump and the utlity model has following beneficial effect:
1, the utility model project organization is simple, during normal operation, centrifugal seal axial force that produces and the complete autobalance of axial force that the inlet positive pressure produces is realized sealing function, the sealing effect excellence.
2, the utility model is selected oar formula sub-propeller and oar formula Balance disc sub-propeller for use, when reducing cost of material, has further improved the pressure of pump intake.
Description of drawings
Fig. 1 is a three-dimensional section simplified schematic diagram of the present utility model
Embodiment
Reference character shown in Figure 1 is as follows: cylindrical bearing 1, bearing housing 2, pump shaft 3, support 4, motive sealing seat 5, V-seal ring 6, balance pressure relief device 7, impeller nut 8, choma 9, impeller 10, pump case 11, balance plate 12, oar formula Balance disc sub-propeller 13, pump cover 2 14, stud nut 15, oar formula sub-propeller 16, pump cover 1, spring 18, centrifugal sub 19, sealflush device 20.
Oar formula automatic balance centrifugation seal pump, it is characterized in that: cylindrical bearing 1 is embedded in position, rear and front end in the bearing housing 2, pump shaft 3 is installed in the bearing housing, pump shaft 3 is position, parking confined area in leading to pump intermediate support 4, be provided with the static seal seat, motive sealing seat 5, be provided with in the motive sealing seat 5 spring 18 is installed, V-seal ring 6, motive sealing seat 5 is outside equipped with centrifugal sub 19, after installing oar formula sub-propeller 16, pump shaft 3 upper sleeve throughs install pump cover 1, then oar formula Balance disc sub-propeller 13 is installed at the axle upper sleeve through, balance plate 12, install pump cover 2 14, installing impeller 10, choma 9 backs are tight with impeller nut 8 rotation edges, with pump case 11 with tighten intermediate support 4 and bearing housing 15 rotary connections of 2 usefulness stud nuts, install and to prepare balance pressure relief device 7 and to sealflush device 20.
Described balance pressure relief device 7 one ends are connected with the pressure releasing chamber of pump case 11 central authorities, and the other end is communicated with pump intake.
The described device 20 of sealflushing is communicated with oar formula sub-propeller 16 place chambers, the pressure control table is set sealflushing on the device 20, so that control is towards the pressure size of trickle.
Claims (4)
1. oar formula automatic balance centrifugation seal pump, it is characterized in that: cylindrical bearing of the present utility model is embedded in position, rear and front end in the bearing housing, pump shaft is installed in the bearing housing, pump shaft is position, parking confined area in leading to the pump intermediate support, be provided with stationary seal ring, the motive sealing seat, be provided with in the motive sealing seat spring is installed, the motive sealing seat is outside equipped with centrifugal son, after installing sub-propeller, the pump shaft upper sleeve through installs pump cover one, then the Balance disc sub-propeller is installed at the axle upper sleeve through, balance plate, install pump cover two, installing blade impeller, tight behind the choma with impeller nut rotation edge, pump case is tightened with rotary connection of stud nut with intermediate support and bearing housing, and installation prepares the balance pressure relief device and sealflushes device.
2. a kind of oar formula automatic balance centrifugation seal pump according to claim 1 is characterized in that: described sub-propeller adopts oar formula structure.
3. a kind of oar formula automatic balance centrifugation seal pump according to claim 1 is characterized in that: described Balance disc sub-propeller adopts oar formula structure.
4. a kind of oar formula automatic balance centrifugation seal pump according to claim 1, it is characterized in that: the utility model is provided with the balance pressure relief device and sealflushes device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120040162XU CN202065230U (en) | 2011-02-15 | 2011-02-15 | Paddle automatic balancing centrifugal seal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120040162XU CN202065230U (en) | 2011-02-15 | 2011-02-15 | Paddle automatic balancing centrifugal seal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202065230U true CN202065230U (en) | 2011-12-07 |
Family
ID=45059094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120040162XU Expired - Fee Related CN202065230U (en) | 2011-02-15 | 2011-02-15 | Paddle automatic balancing centrifugal seal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202065230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223397A (en) * | 2017-12-21 | 2018-06-29 | 江苏双轮泵业机械制造有限公司 | A kind of centrifugal pump system |
-
2011
- 2011-02-15 CN CN201120040162XU patent/CN202065230U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223397A (en) * | 2017-12-21 | 2018-06-29 | 江苏双轮泵业机械制造有限公司 | A kind of centrifugal pump system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20160215 |