Gas-liquid-solid three-phase mixed transportation vertical magnetic drive pump
By using PEEK isolation sleeves and rolling grease lubricated bearings in magnetic pumps, the pump efficiency reduction and component wear caused by solid phase particles are solved, and a longer service life and higher safety efficiency are achieved.
Patent Information
- Application Number
- CN202421974847.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-15
AI Technical Summary
When existing magnetic pumps convey gas-liquid solid three-phase mixed medium, solid phase particles can easily block the cooling circulation path, causing the temperature of the rotor cavity to rise and the internal rotor to demagnetize; solid particles wear through the isolation sleeve, resulting in media leakage; solid particles enter the sliding bearing, damage the bearing.
A gas-liquid solid three-phase mixed-transport vertical magnetic pump is designed, using a PEEK material isolation sleeve to avoid magnetic eddy current heat and eliminate cooling circulation paths; a lower bearing and upper bearing lubricated by rolling grease are used to protect the inner magnetic rotor and isolation sleeve from wear by solid particles.
It effectively protects the pump's lower bearing, upper bearing, inner magnetic rotor and isolation sleeve, prevents the wear of solid particles, extends the service life of the pump, low vibration during operation, safe and reliable, and lasts for long-lasting use, and meets the standards of high safety and high efficiency.
Smart Images
Figure CN222936938U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas vertical magnetic pumps, and particularly relates to a gas-liquid-solid three-phase mixed transportation vertical magnetic pump. Background Technique
[0002] A conventional magnetic pump is composed of an outer magnetic rotor and an inner magnetic rotor. Through the magnetic field of the outer magnetic rotor, the rotation of the inner magnetic rotor is driven. The inner magnetic rotor drives the pump shaft to rotate, and the pump shaft drives the impeller to rotate for working. A magnetic pump is provided with an isolation sleeve between the inner magnetic rotor and the outer magnetic rotor, which forms a sealing cavity with the pump body and the pump cover, enclosing the impeller, the main shaft and the inner magnetic rotor in the sealing cavity to prevent the medium from leaking from the pump main shaft end.
[0003] The prior art adopts silicon carbide sliding
[0004] bearings and metal isolation sleeves at the rotor end. When the outer rotor drives the inner rotor to rotate, a high-strength magnetic field existing between the inner and outer rotors generates magnetic eddy current heat due to the cutting of the metal isolation sleeve. In order to reduce the influence of eddy current heat on the pump efficiency and the rotor, a cooling circulation path is designed in the structure to reduce the magnetic eddy current heat. When this kind of magnetic pump transports gas-liquid-solid three-phase mixed transportation media, a series of problems will occur: First, solid particles enter the cavity where the inner rotor is located, blocking the cooling circulation path of the pump, and the eddy current heat cannot be taken away in time, resulting in a temperature rise in the rotor cavity, and the inner rotor demagnetizes due to excessive temperature. Second, the solid particles act as abrasives and wear through the thin wall of the isolation sleeve, causing a large amount of medium leakage. Third, hard particle solid particles enter the sliding bearing, resulting in damage to the sliding bearing.
[0005] In order to solve the above problems, we propose a gas-liquid-solid three-phase mixed transportation vertical magnetic pump. Content of the Utility Model
[0006] The purpose of the utility model is to provide a gas-liquid-solid three-phase mixed transportation vertical magnetic pump to solve the problems put forward in the above background technique.
[0007] To achieve the above purpose, the utility model provides the following technical solution: A gas-liquid-solid three-phase mixed transportation vertical magnetic pump, including a pump body, an impeller, a pump shaft, a pump cover, a connection cavity, an inner magnetic rotor, an isolation sleeve, an outer magnetic rotor, a first connection body and a driving device; the impeller is arranged in the pump body; the top of the pump body is connected to the bottom of the pump cover; the top of the pump cover is connected to the bottom of the connection cavity; the top of the connection cavity is connected to the bottom of the first connection body; the bottom end of the pump shaft is connected to the impeller; the inner magnetic rotor is arranged on the top of the first connection body; the inner magnetic rotor is sleeved on the top end of the pump shaft; the driving device includes a driving end and a fixed end; the driving end of the driving device is connected to the outer magnetic rotor; an isolation sleeve is arranged between the outer magnetic rotor and the inner magnetic rotor; the isolation sleeve is arranged on the top of the first connection body;
[0008] A first liquid level switch and a second liquid level switch are provided on the side of the connection cavity; the first liquid level switch is located below the second liquid level switch; both the first liquid level switch and the second liquid level switch communicate with the inside of the connection cavity; a connection pipe is provided on the outer side of the first connection body; the connection pipe communicates with the inside of the connection cavity.
[0009] Preferably, a solenoid valve is provided on the connection pipe.
[0010] Preferably, a bracket is provided outside the first connection body.
[0011] Preferably, a second connection body is provided at the top of the bracket; the fixed end of the driving device is connected to the top of the second connection body; the outer magnetic rotor is arranged inside the second connection body.
[0012] Preferably, a lower bearing and an upper bearing are sleeved on the pump shaft; the pump shaft is connected to the inner side wall of the first connection body through the lower bearing and the upper bearing.
[0013] Preferably, the isolation sleeve is made of PEEK material.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: for this vertical magnetic pump for gas-liquid-solid three-phase mixed transportation, since the medium does not enter the part above the first connection body, the lower bearing, the upper bearing and the inner magnetic rotor of the pump are effectively protected, and the isolation sleeve is more effectively protected from being worn by solid particles in the transported medium, thus prolonging the service life of the pump.
[0015] The present utility model has low vibration, is safe and reliable, and has a long service life during operation, meeting the standards of high safety and high efficiency. Description of the Drawings
[0016] Figure 1 It is a schematic structural diagram of the present utility model.
[0017] In the figure: 1 - pump body, 2 - impeller, 3 - pump shaft, 4 - pump cover, 5 - lower bearing, 6 - upper bearing, 7 - connection cavity, 8 - inner magnetic rotor, 9 - isolation sleeve, 10 - outer magnetic rotor, 11 - first connection body, 12 - first liquid level switch, 13 - second liquid level switch, 14 - second connection body, 15 - driving device, 16 - bracket, 17 - solenoid valve, 18 - connection pipe. Detailed Embodiments
[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0019] Please refer to Figure 1 , the present invention provides a technical solution: a vertical magnetic pump for gas-liquid-solid three-phase mixed transportation, including a pump body 1, an impeller 2, a pump shaft 3, a pump cover 4, a connection cavity 7, an inner magnetic rotor 8, a isolation sleeve 9, an outer magnetic rotor 10, a first connection body 11, and a driving device 15. The impeller 2 is arranged inside the pump body 1. The top of the pump body 1 is connected to the bottom of the pump cover 4. The top of the pump cover 4 is connected to the bottom of the connection cavity 7. The top of the connection cavity 7 is connected to the bottom of the first connection body 11. The bottom end of the pump shaft 3 is connected to the impeller 2. The inner magnetic rotor 8 is arranged on the top of the first connection body 11. The inner magnetic rotor 8 is sleeved on the top end of the pump shaft 3. The driving device 15 includes a driving end and a fixed end. The driving end of the driving device 15 is connected to the outer magnetic rotor 10. An isolation sleeve 9 is provided between the outer magnetic rotor 10 and the inner magnetic rotor 8. The isolation sleeve 9 is arranged on the top of the first connection body 11.
[0020] A first liquid level switch 12 and a second liquid level switch 13 are provided on the side of the connection cavity 7. The first liquid level switch 12 is located below the second liquid level switch 13. Both the first liquid level switch 12 and the second liquid level switch 13 communicate with the inside of the connection cavity 7. A connection pipe 18 is provided on the outer side surface of the first connection body 11. The connection pipe 18 communicates with the inside of the connection cavity 7.
[0021] Further, an electromagnetic valve 17 is provided on the connection pipe 18.
[0022] Further, a bracket 16 is provided outside the first connection body 11.
[0023] Further, a second connection body 14 is provided at the top of the bracket 16. The top of the second connection body 14 is connected to the fixed end of the driving device 15. The outer magnetic rotor 10 is arranged inside the second connection body 14.
[0024] Further, a lower bearing 5 and an upper bearing 6 are sleeved on the pump shaft 3. The pump shaft 3 is connected to the inner side wall of the first connection body 11 through the lower bearing 5 and the upper bearing 6.
[0025] Further, the isolation sleeve 9 is made of PEEK material
[0026] In the present utility model, the isolation sleeve 9 is made of PEEK (engineering plastic), which will not generate magnetic eddy current heat due to cutting the high-strength magnetic field during operation. Therefore, the magnetic pump used in the present utility model no longer designs a cooling circulation path. The lower bearing 5 and the upper bearing 6 both adopt rolling grease lubricated bearings, solving the bearing lubrication problem. The first liquid level switch 12 and the second liquid level switch 13 are provided on the connection cavity 7 to control the opening and closing of the solenoid valve 17 on the connection pipe 18.
[0027] Polyetheretherketone (PEEK) is a high polymer composed of repeating units containing a ketone bond and two ether bonds in the main chain structure, belonging to special polymer materials. It has physical and chemical properties such as high temperature resistance and chemical resistance to drugs. It is a kind of semi-crystalline polymer material, which can be used as high-temperature resistant structural materials and electrical insulating materials, and can be compounded with glass fiber or carbon fiber to prepare reinforcing materials.
[0028] Working principle:
[0029] Before the pump works, the solenoid valve 17 is opened, and the connection cavity 7 is filled with gas to make the liquid level reach the height of the first liquid level switch 12. At this time, the first liquid level switch 12 is triggered to control the solenoid valve 17 to close; when the liquid level rises to the height of the second liquid level switch 13, the second liquid level switch 13 is triggered to control the solenoid valve 17 to open, and gas is filled into the connection cavity 7 to make the liquid level drop to the first liquid level switch 12.
[0030] Since the medium does not enter the part above the first connection body 11 in the present utility model, the lower bearing 5, the upper bearing 6 and the inner magnetic rotor 8 of the pump are effectively protected, and the isolation sleeve 9 is more effectively protected from the wear of solid particles in the transported medium, prolonging the service life of the pump.
[0031] The present utility model has low vibration, is safe and reliable, and has a long service life during operation, meeting the standards of high safety and high efficiency.
[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0033] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A gas-liquid-solid three-phase mixed vertical magnetic pump, comprising a pump body (1), an impeller (2), a pump shaft (3), a pump cover (4), a connecting chamber (7), an inner magnetic rotor (8), a spacer sleeve (9), an outer magnetic rotor (10), a first connecting body (11) and a driving device (15); the impeller (2) is arranged in the pump body (1); the top of the pump body (1) is connected to the bottom of the pump cover (4); the top of the pump cover (4) is connected to the bottom of the connecting chamber (7); the top of the connecting chamber (7) is connected to the first connecting body (11); 1) bottom; the bottom end of the pump shaft (3) is connected to the impeller (2); the inner magnetic rotor (8) is arranged at the top of the first connecting body (11); the inner magnetic rotor (8) is sleeved on the top of the pump shaft (3); the driving device (15) includes a driving end and a fixed end; the driving end of the driving device (15) is connected to the outer magnetic rotor (10); the isolation sleeve (9) is arranged between the outer magnetic rotor (10) and the inner magnetic rotor (8); the isolation sleeve (9) is arranged at the top of the first connecting body (11); It is characterized in that A first liquid level switch (12) and a second liquid level switch (13) are provided on the side of the connecting cavity (7); the first liquid level switch (12) is located below the second liquid level switch (13); the first liquid level switch (12) and the second liquid level switch (13) are both connected to the interior of the connecting cavity (7); a connecting pipe (18) is provided on the outer side of the first connecting body (11); the connecting pipe (18) is connected to the interior of the connecting cavity (7).
2. A gas-liquid-solid three-phase mixed vertical magnetic pump according to claim 1, characterized in that: The connecting pipe (18) is provided with a solenoid valve (17).
3. A gas-liquid-solid three-phase mixed vertical magnetic pump according to claim 1, characterized in that: A bracket (16) is provided outside the first connecting body (11).
4. A gas-liquid-solid three-phase mixed vertical magnetic pump according to claim 3, characterized in that: A second connector (14) is provided on the top of the bracket (16); the top of the second connector (14) is connected to the fixed end of the drive device (15); and the external magnetic rotor (10) is arranged in the second connector (14).
5. A gas-liquid-solid three-phase mixed vertical magnetic pump according to claim 1, characterized in that: The pump shaft (3) is sleeved with a lower bearing (5) and an upper bearing (6); the pump shaft (3) is connected to the inner wall of the first connecting body (11) via the lower bearing (5) and the upper bearing (6).
6. A gas-liquid-solid three-phase mixed vertical magnetic pump according to claim 1, characterized in that: The isolation sleeve (9) is made of PEEK material.