CN213270303U - Magnetic drive pump capable of conveying slurry - Google Patents
Magnetic drive pump capable of conveying slurry Download PDFInfo
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- CN213270303U CN213270303U CN202021745765.5U CN202021745765U CN213270303U CN 213270303 U CN213270303 U CN 213270303U CN 202021745765 U CN202021745765 U CN 202021745765U CN 213270303 U CN213270303 U CN 213270303U
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Abstract
The utility model discloses a can carry magnetic force drive pump of ground paste, median septum and separation sleeve be connected including the pump case, with the pump case, the three constitutes sealed chamber, and outer magnet rotor connects the motor, impeller mounting is in the pump case, and sealed intracavity is arranged in to the main shaft, and impeller, axle sleeve, interior magnet rotor cover are located on the main shaft, and the cover is equipped with the supporting sleeve on the axle sleeve, and the cover is equipped with sand control retaining ring on the axle sleeve, and sand control retaining ring arranges in between median septum and the axle sleeve, and cavity between median septum periphery and the separation sleeve constitutes interior magnet rotor cavity, has seted up on the separation sleeve or the median septum and has annotated the interior magnet rotor cavity of liquid mouth intercommunication, has seted up the cooling water hole on the median septum of sand control retaining ring department, and has. Can transport slurry containing solid, has no mechanical seal and no leakage.
Description
Technical Field
The utility model relates to a magnetic drive centrifugal pump preparation field especially relates to anticorrosive centrifugal pump of plastics.
Background
In the prior art, the magnetic drive centrifugal pump is generally used for conveying clear liquid media in the field of industrial production, and the technical difficulty that the magnetic drive centrifugal pump can convey slurry is not broken through for a long time.
The reason why the magnetically driven centrifugal pump cannot convey slurry is that: the magnetic pump has the advantages that the requirement on the distance between the inner magnetic steel and the outer magnetic steel is high, the distance is large, the acting magnetic force of the inner magnetic steel and the outer magnetic steel is influenced, the inner magnetic gap and the outer magnetic gap contain the isolation sleeve and cannot exceed about 5mm, therefore, the distance between the inner magnetic rotor 1 and the isolation sleeve 2 can be only set to be about 0.4-0.6 mm (as shown in figure 1), when the pump runs in the gap, hard solid particles in conveyed materials can clamp the magnetic steel, scratch the isolation sleeve or reduce the mobility, further the temperature of fluid in the magnetic steel part is increased, and then the pump component is damaged. Thus, no mature such technique has been found in the prior art for delivering slurry using magnetic pumps. On the other hand, the centrifugal slurry pump in the prior art adopts the mechanical seal as the shaft seal, so the centrifugal slurry pump also has the conditions of easy leakage and easy damage, has a large distance with the requirement of a non-leakage pump, and the mechanical seal used by the slurry pump has high cost, which almost occupies half of the consumption of pump accessories.
In the prior art, the method for cooling the liquid in the cavity is to introduce the fluid conveyed in the volute cavity of the pump into the inner magnetic steel cavity by arranging the small backflow holes 3 (as shown in figure 1) on the middle partition plate, so as to play a role in cooling the temperature of the fluid in the cavity. However, the arrangement of the structure is only suitable for the magnetic pump which uses clear liquid as a conveying medium and is not suitable for the centrifugal magnetic pump which uses slurry as a conveying medium, because solid particles in the backflow liquid can enter a gap part between the inner magnetic steel and the isolation sleeve, or the magnetic steel is clamped or the isolation sleeve is corroded.
The above-mentioned deficiencies of the prior art still need to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide one kind can carry contain solid ground paste, do not set up mechanical seal, the magnetic force drive pump of the transferable ground paste of leakage.
For realizing the purpose of the utility model, the following technical proposal is provided: the utility model provides a can carry magnetic drive pump of ground paste, includes pump case, the median septum and the separation sleeve of being connected with the pump case, and the three constitutes the seal chamber, and outer magnet rotor connects the motor, impeller installation is in the pump case, and the sealed intracavity is arranged in to the main shaft, impeller, axle sleeve, interior magnet rotor cover are located on the main shaft, and the cover is equipped with the supporting sleeve on the axle sleeve, and the cover is equipped with sand control retaining ring on its characterized in that axle sleeve, and sand control retaining ring arranges in between median septum and the axle sleeve, and the cavity between median septum periphery and the separation sleeve constitutes interior magnet rotor cavity, has seted up on the separation sleeve or the median septum and has filled liquid mouth intercommunication interior magnet rotor cavity, has seted up the cooling water hole on the median septum of sand.
Preferably, the sand prevention check ring is a lip-shaped rubber ring or a plane friction pair.
Preferably, the isolation sleeve or the middle clapboard is provided with a liquid outlet.
Preferably, the middle partition plate is provided with a discharge hole which is communicated with the pump cavity.
Preferably, the impeller radial plate is provided with a solid-liquid separation groove, and the impeller radial plate is internally provided with a slag discharge hole communicated with the solid-liquid separation groove.
Preferably, a wind wheel is arranged on a rotating shaft of the outer magnetic steel rotor connected with the motor, and a vent hole is formed in the outer magnetic steel rotor.
Preferably, the end part of the outer magnetic steel fixing sleeve of the outer magnetic steel rotor is provided with a fan blade which is integrally manufactured with the outer magnetic steel fixing sleeve.
Preferably, the spacer sleeve outer circumferential portion is provided with a heat dissipating fin.
Preferably, the isolation sleeve comprises an inner plastic layer and an outer metal sleeve.
The utility model discloses beneficial effect:
1. the magnetic drive pump that makes can not carry the ground paste can carry the ground paste, has overturned the cognition that the magnetic drive pump can not carry the ground paste for a long time, because the magnetic drive centrifugal pump is the centrifugal pump of no leakage point, just can provide a no leakage ground paste centrifugal pump for the user after the structural improvement, has satisfied the no requirement of leaking the environmental protection in the industrial production field.
2. Because this slurry pump does not have the leak source, and is not fragile, has effectively promoted the security, the reliability of chemical industry equipment, makes the overhaul of the equipments cycle extension, and then has promoted the stability of equipment.
3. The mechanical seal is not used, the pressure balance of the fluid and the leakage of slurry in the sealed pump cavity are skillfully utilized, the expense of maintaining and replacing the mechanical seal can be saved for users, and the use cost of equipment is saved for the users.
Drawings
FIG. 1 is a schematic structural diagram of a magnetic pump in the prior art;
fig. 2 is a schematic view of a magnetic pump according to embodiment 1 of the present invention;
FIG. 3 is an enlarged partial schematic view of the impeller and rotor portion of FIG. 2;
FIG. 4 is a schematic structural view of a sand-proof retainer ring provided with through holes;
FIG. 5 is a schematic structural view of example 2;
FIG. 6 is a schematic structural view of embodiment 3;
FIG. 7 is a schematic structural view of example 4;
FIG. 8 shows another structure of the preferred embodiment 4;
FIG. 9 is a schematic structural view of example 5;
FIG. 10 is a perspective view of the spacer sleeve with heat dissipating fins disposed around the spacer sleeve;
FIG. 11 is a schematic structural view of example 6.
Detailed Description
Example 1: as shown in fig. 2, 3 and 4, the magnetic force driven pump capable of conveying slurry comprises a pump shell 1, a middle clapboard 3 connected with the pump shell 1 and an isolation sleeve 6, wherein the three components form a sealed cavity, an external magnetic steel rotor 7 is connected with a motor 11, impeller 2 installs in pump case 1, the sealed intracavity is arranged in to main shaft 4, impeller 2, axle sleeve 17, interior magnet steel rotor 5 covers is located on main shaft 4, the cover is equipped with supporting sleeve 8 on the axle sleeve 17, the cover is equipped with two sand control retaining rings 9 on the axle sleeve 17, sand control retaining ring 9 is arranged in between median septum 3 and the axle sleeve 17, sand control retaining ring 9 is lip rubber circle 9.1, cavity between 3 peripheries of median septum and the isolation sleeve 6 constitutes interior magnet rotor cavity 19, seted up on the isolation sleeve 6 and annotated interior magnet rotor cavity 19 of liquid mouth 12 intercommunication, seted up leakage fluid dram 15 on the isolation sleeve 6, offered cooling water hole 18 on the median septum 3 of sand control retaining ring 9 department, interior magnet rotor cavity 19 of cooling water hole 18 intercommunication. The insulating sleeve 6 comprises an inner plastic layer 6.1 and an outer metal sleeve 6.2.
As shown in fig. 4, the sand-proof retainer ring 9.1 is provided with a through hole 9.1.1 and a filter element 9.1.2. The through hole 9.1.1 is arranged for enabling the liquid in the rotor cavity to flow and circulate to the pump volute cavity, so that the temperature of the fluid of the magnetic steel rotor part is not increased due to the rotation of the rotor, and the safety of the inner magnetic rotor is ensured; the purpose of the filter cartridge 9.1.2 is to prevent solid particles from entering the inner magnetic rotor chamber through the through-holes.
In order to reduce solid in the fluid at the position of the sand prevention check ring, make the partial fluid in a clear liquid state and prolong the service life of the sand prevention check ring, the good method is that a solid-liquid separation groove 2.2 is arranged on an impeller radial plate, and a slag discharge hole 2.3 communicated with the solid-liquid separation groove is arranged in the impeller radial plate. The fluid at the sand prevention check ring part rotates in the separation cavity, the solid in the fluid in the separation cavity is separated out under the action of gravity and centrifugal force, and then the fluid is discharged from the slag discharge hole 2.3. Through the arrangement, the solid content of the fluid of the main shaft 4 and the sand prevention check ring part 9 can be effectively reduced, the sand prevention check ring 9 and the main shaft supporting sleeve 8 can operate in a clean liquid state, and the service life of the sand prevention check ring and the supporting sleeve is ensured.
The purpose of setting up notes liquid mouth is to annotate the liquid to interior magnet steel appearance chamber, and the temperature of the interior magnet steel appearance intracavity liquid of cooling.
The manufacturing method is to use the metal shell to be lined with the ultra-high molecular weight polyethylene to manufacture the plastic-lined pump volute 1.
The impeller 2 is manufactured by an ultra-high molecular weight polyethylene hot press molding method, and a metal embedded part 2.1 is embedded in the impeller, wherein the purpose of embedding the metal embedded part is to increase the strength of the impeller.
The middle clapboard 3 is manufactured by the hot-press molding process of ultra-high molecular weight polyethylene, and a metal framework 3.1 is additionally arranged in the middle clapboard.
The isolation sleeve 6 is made of polyphenylene sulfide (PPS), the rotor body 5 is made of samarium cobalt permanent magnet, the rotor body is wrapped by a plastic anticorrosive layer 5.1, and the isolation sleeve is provided with a liquid injection port 12 and a liquid discharge port 15.
And selecting duplex stainless steel to manufacture the main shaft 4.
Selecting and filling PTFE to manufacture the supporting sleeve 8.
The external magnetic steel rotor 7, the external magnetic steel sleeve 7.1, the motor 11 and the connecting bracket 10 are purchased and manufactured according to the manufacturing requirements of the conventional magnetic pump.
The components of the magnetic pump are respectively assembled and installed together by a pump shell 1, an impeller 2, a middle partition plate 3, a main shaft 4, an internal magnetic steel rotor 5, a supporting sleeve 8, an isolating sleeve 6, an external magnetic steel rotor 7, an installing support 10 and a motor 11 according to the conventional installation method of the magnetic pump. And at main shaft portion installation sand control retaining ring 9, deposit the liquid chamber at the rotor and set up annotate liquid mouth 12 and input pipeline 14, hookup liquid source 13, just can obtain the magnetic drive pump that can carry the ground paste test again, pack the back, can provide the product finished product to the user.
The pump shell 1 can be made of an all-plastic structure or made of wear-resistant metal alloy as long as the requirement of slurry conveying can be met.
The impeller 2 may be made of a non-metal material or a metal material, and the present invention is not limited thereto.
The impeller 2 may be open, semi-open, closed.
The middle partition plate 3 can be of a metal composite plastic structure or a metal structure, and aims to meet the requirements of wear resistance and corrosion resistance and bear the movement supporting force of the main shaft.
The supporting sleeve 8 can be made of other metal or non-metal materials, such as silicon carbide, carbon graphite, phosphor bronze, etc., and whatever material is used, so long as the using requirement of the actual working condition can be met, which is also within the meaning and coverage of the utility model.
The sand control retainer ring 9 can be made of lip-shaped rubber rings 9.1 or other wear-resistant sealing materials.
In this embodiment, the drain hole 3.2 formed in the middle partition plate is formed in a portion, and the drain hole in the cavity of the inner magnetic steel rotor in this embodiment may also be formed in a sand-proof check ring 9.1 (see fig. 4).
The aperture size and the number of the holes of the drain hole are determined according to the condition of the medium conveyed by the pump, the conveying medium has no requirement of inner discharge limitation, the drain hole can be provided with a large cross section area, otherwise, the drain hole can be provided with a small cross section area.
The isolation sleeve can be made of engineering plastics such as fluoroplastic, polypropylene and the like, or a high-temperature-resistant and high-strength polyphenylene sulfide single layer or composite, or can be made of a metal composite double layer.
Example 2: referring to embodiment 1, as shown in fig. 5, the remaining features are unchanged, the liquid discharge port 15 on the isolation sleeve 6 is removed, the middle partition plate 3 is provided with a discharge hole 3.2, and the discharge hole 3.2 is communicated with the pump cavity 1.1. The outlet opening 3.2 is intended to open in the central region of the intermediate partition 3. Because the fluid in this part on one side of the pump cavity 1.1 is in a negative pressure state, the liquid in the cavity of the inner rotor can be sucked into the pump cavity, and the slurry in the pump cavity 1.1 cannot overflow into the cavity of the rotor, so that the normal operation of the inner rotor is influenced.
In order to ensure that the fluid in the pump shell cavity 1.1 does not pass through the main shaft bearing sleeve 8 and flows back into the inner magnetic rotor cavity 6.1, so that the cooling liquid in the rotor cavity is clean, the effective method is to arrange back blade strips 2.4 (shown in figure 5) on the back of the impeller, and when the pump runs, the fluid in the bearing sleeve part of the main shaft is decompressed through the centrifugal action of the back blade strips.
Example 3: referring to the embodiment 1, as shown in fig. 6, the other features are unchanged, the pump housing 1 and the pump cover 16 are manufactured separately, the middle partition plate 3 is provided with the liquid injection port 12 communicated with the inner magnetic rotor cavity 19, and the middle partition plate 3 is provided with the liquid discharge port 15.
Example 4: referring to the embodiment 1, as shown in fig. 7 and 8, the rest characteristics are unchanged, and the sand control retainer ring is a plane friction pair 9.2, namely a mechanical seal. The mechanical seal replaces the sand blocking function of the lip-shaped rubber ring, is suitable for and meets the requirements that some conveying materials cannot be filled with water or seeped with water and have limited post positions requiring internal cooling water drainage.
Another purpose of adopting the built-in mechanical sealing structure is to overcome the requirement of solving the working condition that some rubber materials for the sand blocking ring sleeve are not suitable for, such as the transportation of slurry containing solvent.
Example 5: referring to example 1, as shown in fig. 9 and 10, referring to example 1,
a wind wheel 17 is arranged on a rotating shaft of the external magnetic steel rotor 7 connected with the motor, and a vent hole 7.2 is arranged on the external magnetic steel rotor 7.
Example 6: referring to embodiment 1, as shown in fig. 11, referring to embodiment 1, the end of the external magnetic steel fixing sleeve 7.1 of the external magnetic steel rotor 7 is provided with a fan blade 7.3 integrally manufactured with the external magnetic steel fixing sleeve 7.1. The outer periphery of the isolation sleeve is provided with a radiating fin 6.3.
When the pump machine works, wind power generated by the wind wheel 17 enters a gap between the isolation sleeve 6 and the external magnetic steel 7 to cool the outer surface of the isolation sleeve 6, and the further purpose is to cool liquid inside the isolation sleeve 6. During the operation of the magnetic pump, the inner magnetic rotor 5 generates friction with the liquid in the spacer sleeve 6, so that the temperature of the externally injected cooling liquid is increased. In order to control the cooling liquid of the inner magnetic steel part within the safe range of about 80 ℃ and ensure the safe operation of the magnetic pump, the effective method is that the injection amount of the external source liquid is increased by the liquid injection port 12, so that the overflow of the cooling liquid of the inner magnetic steel part is increased, and the purpose of cooling is achieved.
In the embodiment, the air cooling system is arranged at the inner magnetic steel part and the outer magnetic steel part, so that the outer air cooling is carried out on the inner magnetic steel part, the temperature of the inner magnetic steel part is reduced, the injection amount of cooling water of an external liquid source is further reduced, and the purpose of saving water is achieved.
In order to increase the heat dissipation performance of the isolation sleeve, the isolation sleeve is made of materials with good heat conductivity coefficient performance, such as aluminum alloy, magnesium alloy, steel alloy and the like with good heat conductivity coefficient.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (9)
1. The utility model provides a can carry magnetic force drive pump of ground paste, including the pump case, median septum and the separation sleeve be connected with the pump case, the three constitutes the seal chamber, outer magnet rotor connects the motor, impeller installation is in the pump case, the sealed intracavity is arranged in to the main shaft, impeller, the axle sleeve, interior magnet rotor cover is located on the main shaft, the cover is equipped with the supporting sleeve on the axle sleeve, the cover is equipped with sand control retaining ring on its characterized in that axle sleeve, sand control retaining ring arranges in between median septum and the axle sleeve, cavity between median septum periphery and the separation sleeve constitutes interior magnet rotor cavity, the interior magnet rotor cavity of notes liquid mouth intercommunication has been seted up on the separation sleeve or the median septum, the cooling water hole has been seted up on the median septum of sand control retaining ring department.
2. A magnetically driven pump for transporting slurry as claimed in claim 1, wherein the sand control retainer ring is a rubber lip ring or a friction pair.
3. A magnetically driven pump according to claim 1, wherein the jacket or the intermediate wall is provided with a liquid outlet.
4. A magnetically driven pump according to claim 1, wherein the intermediate diaphragm defines a discharge orifice communicating with the pump chamber.
5. A magnetically driven pump according to claim 1, wherein the impeller has a solid-liquid separation chamber, and the impeller has a slag discharge hole communicating with the solid-liquid separation chamber.
6. A magnetically driven pump for delivering slurry as claimed in claim 1, wherein the rotor of external magnetic steel has a wind wheel on its shaft connected to motor and has ventilation holes.
7. The magnetically driven pump capable of transporting slurry as claimed in claim 1, wherein the outer magnetic steel fixing sleeve of the outer magnetic steel rotor has fan blades at its end and is made integrally with the outer magnetic steel fixing sleeve.
8. A magnetically driven pump for transporting slurry as claimed in claim 1, wherein the spacer sleeve is provided with heat dissipating fins at its outer periphery.
9. A magnetically driven pump for transporting slurry as claimed in claim 1 wherein the spacer sleeve comprises an inner plastic layer and an outer metal sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021745765.5U CN213270303U (en) | 2020-08-20 | 2020-08-20 | Magnetic drive pump capable of conveying slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021745765.5U CN213270303U (en) | 2020-08-20 | 2020-08-20 | Magnetic drive pump capable of conveying slurry |
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| Publication Number | Publication Date |
|---|---|
| CN213270303U true CN213270303U (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021745765.5U Active CN213270303U (en) | 2020-08-20 | 2020-08-20 | Magnetic drive pump capable of conveying slurry |
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| CN (1) | CN213270303U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685358A (en) * | 2021-09-10 | 2021-11-23 | 宜兴市宙斯泵业有限公司 | Centrifugal slurry magnetic pump |
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2020
- 2020-08-20 CN CN202021745765.5U patent/CN213270303U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685358A (en) * | 2021-09-10 | 2021-11-23 | 宜兴市宙斯泵业有限公司 | Centrifugal slurry magnetic pump |
| CN113685358B (en) * | 2021-09-10 | 2024-05-07 | 宜兴市宙斯泵业有限公司 | Centrifugal slurry magnetic pump |
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