CN219833959U - Magnetic gear pump device - Google Patents
Magnetic gear pump device Download PDFInfo
- Publication number
- CN219833959U CN219833959U CN202321341657.5U CN202321341657U CN219833959U CN 219833959 U CN219833959 U CN 219833959U CN 202321341657 U CN202321341657 U CN 202321341657U CN 219833959 U CN219833959 U CN 219833959U
- Authority
- CN
- China
- Prior art keywords
- magnetic
- gear pump
- inner rotor
- sleeve
- magnetic cylinder
- 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.)
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Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 83
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000009954 braiding Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 10
- 230000008878 coupling Effects 0.000 abstract description 7
- 238000010168 coupling process Methods 0.000 abstract description 7
- 238000005859 coupling reaction Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model relates to a magnetic gear pump device, and belongs to the field of centrifugal pumps. The output shaft of the motor is connected with one end of the magnetic coupler, the other end of the magnetic coupler is connected with the gear pump, the magnetic coupler is in a cylindrical design and is in radial coupling, the magnetic coupler is composed of an outer rotor assembly, an isolation sleeve and an inner rotor assembly, the output shaft of the motor is connected with an outer rotor shaft sleeve, the end part of the outer rotor shaft sleeve is fixed with one end of the outer rotor assembly, a strip tile-shaped permanent magnet is arranged on the outer cylindrical surface of an outer magnetic cylinder of the outer rotor assembly in the parallel axis direction, a strip tile-shaped permanent magnet is arranged on the outer cylindrical surface of an inner magnetic cylinder of the inner rotor assembly in the parallel axis direction, the isolation sleeve is positioned between the inner rotor assembly and the outer rotor assembly, one end of the isolation sleeve is fixed on a pump body of the gear pump, the inner rotor assembly is sealed and wrapped in the isolation sleeve, a gap is reserved between the isolation sleeve and the outer magnetic cylinder and the inner magnetic cylinder, the inner rotor assembly is connected with the inner rotor shaft sleeve, and the inner rotor shaft sleeve is connected with a main shaft of the gear pump.
Description
Technical Field
The utility model relates to the field of centrifugal pumps, in particular to a magnetic gear pump device.
Background
As is well known, centrifugal pumps are widely used devices in the production process of chemical enterprises, and the traditional centrifugal pumps are easy to leak, heat, wear and other problems due to mechanical sealing, so that the centrifugal pumps cannot be used in occasions such as strong corrosion, poisonous, inflammable, valuable liquid and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a magnetic gear pump device which realizes no leakage in the power transmission process.
The technical scheme adopted for solving the technical problems is as follows: a magnetic gear pump device is provided with a rack, a motor is arranged on the rack, and is characterized in that an output shaft of the motor is connected with one end of a magnetic coupler, the other end of the magnetic coupler is connected with a gear pump, the magnetic coupler adopts a cylindrical design and is radially coupled, the magnetic coupler consists of an outer rotor component, an isolating sleeve and an inner rotor component, the output shaft of the motor is connected with an outer rotor shaft sleeve, the end part of the outer rotor shaft sleeve is fixed with one end of the outer rotor component, a tile-shaped permanent magnet is arranged on the outer cylindrical surface of an outer magnetic cylinder of the outer rotor component in a parallel axis direction, a tile-shaped permanent magnet is arranged on the outer cylindrical surface of an inner magnetic cylinder of the inner rotor component in a parallel axis direction, the isolating sleeve is positioned between the inner rotor component and the outer rotor component, one end of the isolating sleeve is fixed on a pump body of the gear pump, the inner rotor component is sealed and wrapped in the isolating sleeve, a gap is reserved between the isolating sleeve and the outer magnetic cylinder and the inner magnetic cylinder, the inner rotor component is coaxial with the gear pump, the inner rotor component is connected with the inner rotor shaft sleeve, and the inner rotor is connected with the inner rotor spindle, and the inner rotor is connected with the main shaft.
The outer surface of the inner magnetic cylinder is coated with a stainless steel wrapping.
And a polytetrafluoroethylene braiding packing is arranged on the gear pump main shaft, and is tightly pressed and sealed by a gland.
The number of the strip tile-shaped permanent magnet blocks arranged on the inner magnetic cylinder and the outer magnetic cylinder is the same, and the magnetic poles of the permanent magnet blocks on the same magnetic cylinder are staggered along the circumferential direction.
The utility model has the advantages that the dynamic seal of the centrifugal pump for transmitting power is changed into the static seal by using the magnetic driving technology, so that no liquid leakage in the power transmission process is realized, the transmission power is larger, the device is not influenced by radial force and axial force, the device is stable in starting and simple in installation, maintenance is not needed during operation, and the cost is saved.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a cross-sectional view of the structure of the present utility model.
FIG. 2 is a cross-sectional view of a magnetic coupler according to the present utility model.
Fig. 3 is a cross-sectional view of the connection structure of the inner rotor assembly and the gear pump according to the present utility model.
1-motor in the figure; 2-magnetic coupling; 3-gear pump; 4-a frame; 5-an outer rotor assembly; 6, a spacer sleeve; 7-an inner rotor assembly; 8-an outer rotor shaft sleeve; 9-an inner rotor sleeve; 10-a gear pump spindle; 11-capping; 12-polytetrafluoroethylene braiding packing.
Detailed Description
In the figure, the utility model is provided with a frame 4, a motor 1 is arranged on the frame 4, an output shaft of the motor 1 is connected with one end of a magnetic coupler 2, the other end of the magnetic coupler 2 is connected with a gear pump 3, the magnetic coupler 2 adopts a cylindrical design and is in radial coupling, the magnetic coupler 2 consists of an outer rotor component 5, a spacer bush 6 and an inner rotor component 7, the output shaft of the motor 1 is connected with an outer rotor shaft sleeve 8, the end part of the outer rotor shaft sleeve 8 is fixed with one end of the outer rotor component 5, a tile-shaped permanent magnet is arranged on the outer cylindrical surface of an outer magnet cylinder of the outer rotor component 5 in parallel axial direction, the outer magnet cylinder is connected with a guide ring by adopting an adhesive, and the guide ring adopts a stainless steel material. The outer cylindrical surface of the inner magnetic cylinder of the inner rotor assembly 7 is provided with a strip tile-shaped permanent magnetic block in the direction parallel to the axis, and the outer surface of the inner magnetic cylinder is coated with a stainless steel wrapping. The number of the strip tile-shaped permanent magnet blocks arranged on the inner magnetic cylinder and the outer magnetic cylinder is the same, and the magnetic poles of the permanent magnet blocks on the same magnetic cylinder are staggered along the circumferential direction. The isolation sleeve 6 is positioned between the inner rotor assembly 7 and the outer rotor assembly 5, one end of the isolation sleeve 6 is fixed on the pump body of the gear pump 3, the inner rotor assembly 7 is sealed and wrapped in the isolation sleeve 6, and the isolation sleeve 6 tightly seals the inner magnetic cylinder and pumping medium. The spacing sleeve 6, the outer magnetic cylinder and the inner magnetic cylinder are provided with a gap of 0.5-2 mm, the spacing sleeve 6 is made of stainless steel, and the spacing sleeve 6 bears the internal pressure. The inner rotor assembly 7 is coaxial with the gear pump 3, the inner rotor assembly 7 is connected with the inner rotor shaft sleeve 9, the inner rotor shaft sleeve 9 is connected with the gear pump main shaft 10, and the shaft end is provided with a check ring. The gear pump spindle 10 is provided with a polytetrafluoroethylene braiding packing 12, and is tightly pressed by a pressing cover 11 to play a role in sealing.
The magnetic coupler 2 adopts a cylindrical design, namely, the magnetic steel is a combined magnetic pole formed by radial magnetization, and the transmission power is high. The number of the strip tile-shaped permanent magnet blocks arranged on the inner magnetic cylinder and the outer magnetic cylinder is the same, and the magnetic poles of the permanent magnet blocks on the same magnetic cylinder are staggered along the circumferential direction. When the motor does not rotate, the mutual attraction force of the inner magnetic pole and the outer magnetic pole is radial force, tangential force is zero, the coupling magnetic poles are attracted to each other and are in a natural coupling state, the displacement angle of the coupling magnetic poles is 0, and the torque m=0. When in operation, the outer rotor component 5 is driven by the motor 1, and the inner rotor component 7 is still in a static state and does not output torque to the outside due to the friction moment and the inertia at the moment of starting. With the continuous increase of the rotating speed, the displacement angle of the coupling magnetic pole is gradually increased, and finally reaches a certain fixed value. When the generated torque is enough to overcome the friction torque and the load, the inner rotor assembly 7 and the outer rotor assembly 5 synchronously rotate together, each magnetic pole on the inner magnetic cylinder and the outer magnetic cylinder is always subjected to the attraction and repulsion action between two magnetic poles of the adjacent magnetic steel, and all the magnetic poles are in a stable working state.
The inner rotor assembly 7 rotates the gear pump spindle 10. Because of the different polarities on the opposite sides of the inner magnetic cylinder and the outer magnetic cylinder, a series of symmetrical combination forces exist between the annular gaps all the time, and the symmetrical combination forces are equal in size and opposite in direction, and the radial components cancel each other. The radial components just form a group of symmetrical rotation couples to drive the gear pump spindle 10 to rotate. The gear pump 3 is driven to rotate in engagement by the driving gear through a pair of gears engaged with each other. A small gap is left between the gear and the housing of the gear pump 3. When the gear rotates, in the liquid suction cavity where the gear teeth are gradually disengaged, the sealed volume between the gear teeth is increased, partial vacuum is formed, and liquid is sucked into the liquid suction chamber under the action of pressure difference. With the rotation of the gears, the liquid is pushed by the gears to advance between the gears and the shell in two ways and is sent to the liquid discharge cavity, the two gears are gradually meshed in the liquid discharge cavity, the volume is reduced, and the liquid between the gears is extruded to the liquid discharge port, so that the pumping operation is realized.
The torque transmission mode utilizes the characteristic of magnetic force action between magnetic fields, and the non-ferromagnetic substances do not influence or hardly influence the magnetic force, so that the power transmission can be carried out through the isolation sleeve 6 in a non-contact manner, the leakage of materials is avoided, and particularly, in the application of high-purity materials with extremely toxic, inflammable and explosive stirring mediums or relatively high cost, the working environment risk is reduced.
Claims (4)
1. A magnetic gear pump device is provided with a rack, a motor is arranged on the rack, and is characterized in that an output shaft of the motor is connected with one end of a magnetic coupler, the other end of the magnetic coupler is connected with a gear pump, the magnetic coupler adopts a cylindrical design and is radially coupled, the magnetic coupler consists of an outer rotor component, an isolating sleeve and an inner rotor component, the output shaft of the motor is connected with an outer rotor shaft sleeve, the end part of the outer rotor shaft sleeve is fixed with one end of the outer rotor component, a tile-shaped permanent magnet is arranged on the outer cylindrical surface of an outer magnetic cylinder of the outer rotor component in a parallel axis direction, a tile-shaped permanent magnet is arranged on the outer cylindrical surface of an inner magnetic cylinder of the inner rotor component in a parallel axis direction, the isolating sleeve is positioned between the inner rotor component and the outer rotor component, one end of the isolating sleeve is fixed on a pump body of the gear pump, the inner rotor component is sealed and wrapped in the isolating sleeve, a gap is reserved between the isolating sleeve and the outer magnetic cylinder and the inner magnetic cylinder, the inner rotor component is coaxial with the gear pump, the inner rotor component is connected with the inner rotor shaft sleeve, and the inner rotor is connected with the inner rotor spindle, and the inner rotor is connected with the main shaft.
2. The magnetic gear pump device according to claim 1, wherein the outer surface of the inner magnetic cylinder is coated with a stainless steel sheath.
3. The magnetic gear pump device according to claim 1, wherein polytetrafluoroethylene braiding packing is arranged on a gear pump main shaft, and the gear pump main shaft is tightly pressed and sealed by a gland.
4. The magnetic gear pump device according to claim 1, wherein the number of the strip-tile-shaped permanent magnet blocks mounted on the inner magnetic cylinder and the outer magnetic cylinder is the same, and the magnetic poles of the permanent magnet blocks on the same magnetic cylinder are staggered along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321341657.5U CN219833959U (en) | 2023-05-30 | 2023-05-30 | Magnetic gear pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321341657.5U CN219833959U (en) | 2023-05-30 | 2023-05-30 | Magnetic gear pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219833959U true CN219833959U (en) | 2023-10-13 |
Family
ID=88248873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321341657.5U Active CN219833959U (en) | 2023-05-30 | 2023-05-30 | Magnetic gear pump device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219833959U (en) |
-
2023
- 2023-05-30 CN CN202321341657.5U patent/CN219833959U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |