High-temperature-resistant anti-cavitation magnetic drive pump

Abstract

The utility model provides a high-temperature-resistant anti-cavitation magnetic drive pump, and relates to the technical field of magnetic drive pumps. The infusion pump is detachably mounted at the driving end of the driving motor; wherein the infusion pump comprises a pump body shell, and the pump body shell is of a double-layer jacket structure and is detachably installed at the driving end of the driving motor; one end of the magnetic coupling is fixedly arranged on a driving rod of the driving motor in a sleeving manner; the isolation sleeve is arranged in the middle position of the magnetic coupling in an embedded mode, and the isolation sleeve is of a double-layer clamping sleeve structure; wherein the pump body shell is provided with a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet penetrate through the pump body shell and the isolation sleeve, and cooling liquid is input into the double-layer jacket structure of the pump body shell and the isolation sleeve. The magnetic drive pump solves the problems that when an existing magnetic drive pump faces a high-temperature environment, sealing failure, part deformation and the like are prone to occurring.

Description

Technical Field

[0001] This utility model relates to the field of magnetic pump technology, and in particular to a high-temperature resistant and cavitation-resistant magnetic pump. Background Technology

[0002] A magnetic pump is a device that uses a magnetic coupling to transmit mechanical energy from a prime mover to the pump rotor without contact, thus enabling the pump to operate. In many industrial fields, such as petrochemicals and power generation, it is necessary to transport high-temperature, high-pressure, and corrosive media.

[0003] However, existing magnetic pumps are prone to problems such as seal failure and component deformation when exposed to high-temperature environments, which shortens the pump's service life. At the same time, during the liquid transportation process, cavitation is prone to occur due to changes in liquid pressure. Cavitation can cause serious damage to the pump's flow-through components, reducing the pump's performance and efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a high-temperature resistant and cavitation-resistant magnetic pump, which solves the problems of sealing failure and component deformation that occur in existing magnetic pumps when facing high-temperature environments.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A high-temperature resistant and cavitation-resistant magnetic pump, comprising:

[0007] Drive motor;

[0008] A liquid pump, wherein the liquid pump is detachably mounted on the drive end of the drive motor;

[0009] The liquid pump includes:

[0010] The pump body housing has a double-layer jacket structure and can be detachably installed on the drive end of the drive motor;

[0011] A magnetic coupling, one end of which is fixedly sleeved on the drive rod of the drive motor;

[0012] An isolation sleeve is embedded in the middle position of the magnetic coupling, and the isolation sleeve has a double-layer jacket structure.

[0013] The pump body shell has an inlet and an outlet, which penetrate the pump body shell and the isolation sleeve to input cooling liquid into the double-layer jacket structure of the pump body shell and the isolation sleeve.

[0014] According to the high-temperature resistant and cavitation-resistant magnetic pump provided by this utility model, the magnetic coupling includes:

[0015] An external magnetic rotor, which is fixedly sleeved on the drive rod of the drive motor;

[0016] An inner magnetic rotor, which is embedded in the outer magnetic rotor;

[0017] The isolation sleeve is embedded between the outer magnetic rotor and the inner magnetic rotor, and the isolation sleeve separates the inner magnetic rotor and the outer magnetic rotor so that the two do not come into contact with each other.

[0018] According to the high-temperature resistant and cavitation-resistant magnetic pump provided by this utility model: magnetic plates are arranged opposite to each other on the inner wall of the outer magnetic rotor and the outer wall of the inner magnetic rotor. The magnetic plates are even-numbered poles and are arranged in a circular pattern in an N and S cross manner.

[0019] According to the high temperature resistant and cavitation resistant magnetic pump provided by this utility model: a connecting shaft is fixedly provided at one end of the inner magnetic rotor away from the outer magnetic rotor, and an impeller is sleeved on the connecting shaft;

[0020] The impeller rotates under the rotation of the internal magnetic rotor.

[0021] According to the high-temperature resistant and cavitation-resistant magnetic pump provided by this utility model: the blades of the impeller are in a twisted wave shape, and the number of blades of the impeller is not less than 10.

[0022] According to the high temperature resistant and cavitation resistant magnetic pump provided by this utility model: an inlet pipe is provided through the end of the pump body shell away from the drive motor, an outlet pipe is provided through the side wall of the end of the pump body shell away from the drive motor, and a guide plate is fixedly provided on the inner wall of the inlet pipe.

[0023] In summary, the beneficial technical effects of this utility model are as follows:

[0024] By designing a double-layered jacketed structure for the pump body housing, and an isolation sleeve with a double-layered jacketed structure in the middle of the magnetic coupling, the pump body housing and the isolation sleeve are connected through the coupling. Inlet and outlet ports are provided on both the pump body housing and the isolation sleeve. Coolant is introduced through the inlet port, and during operation, the coolant cools the pump body housing and the isolation sleeve, preventing damage from high-temperature liquids. This better ensures the normal operation of the pump body housing and the isolation sleeve, thus solving the problem of seal failure and component deformation that commonly occur in existing magnetic pumps under high-temperature environments.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0028] Figure 2 This is a front view structural plan view of an embodiment of this utility model;

[0029] Figure 3 This is a cross-sectional view of the overall structure of an embodiment of this utility model;

[0030] Figure 4 This is an exploded schematic diagram of the magnetic coupling according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the external magnetic rotor and isolation sleeve structure according to an embodiment of the present invention.

[0032] Figure label:

[0033] 10. Drive motor;

[0034] 20. Liquid pump; 21. Pump housing; 22. Magnetic coupling; 23. Isolation sleeve; 24. Impeller; 25. Inlet pipe; 26. Outlet pipe;

[0035] 221. Outer magnetic rotor; 222. Inner magnetic rotor; 223. Magnetic sheet; 224. Connecting shaft;

[0036] 251. Deflector plate. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] In the description of the embodiments of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0040] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] The following is combined Figures 1-5 The embodiments shown illustrate the technical solution of this utility model:

[0043] A high-temperature resistant and cavitation-resistant magnetic pump includes a drive motor 10 and a liquid pump 20, which is detachably installed on the drive end of the drive motor 10. The liquid pump 20 includes: a pump body shell 21, which has a double-layered jacket structure and is detachably installed on the drive end of the drive motor 10; a magnetic coupling 22, one end of which is fixedly sleeved on the drive rod of the drive motor 10; and an isolation sleeve 23, which is embedded in the middle of the magnetic coupling 22 and also has a double-layered jacket structure. The pump body shell 21 has an inlet and an outlet, which penetrate the pump body shell 21 and the isolation sleeve 23, allowing cooling liquid to be introduced into the double-layered jacket structure of the pump body shell 21 and the isolation sleeve 23.

[0044] It is understood that the drive end of the drive motor 10 is connected to the liquid pump 20, which is driven by the drive motor 10. The power supply of the drive motor 10 is connected to an external power source to provide power to the drive motor 10. The liquid pump 20 is formed by the combination of a pump body shell 21, a magnetic coupling 22, and an isolation sleeve 23. The pump body shell 21 has a double-layer jacket structure. The inner layer is made of a high-temperature and corrosion-resistant alloy material, such as a nickel-based alloy, which can withstand the erosion of high-temperature media. The outer jacket has a cooling medium flowing through it. The magnetic coupling 22 uses high-temperature resistant samarium cobalt permanent magnet material for the magnets, such as circulating water or coolant. This material maintains good magnetic and mechanical properties even at high temperatures. The isolation sleeve 23 is made of a composite material of graphite and ceramic, which has good high-temperature resistance and wear resistance. The isolation sleeve 23 is also a double-layer jacket structure. While coolant is being introduced into the pump housing 21, it is also being introduced into the isolation sleeve 23, thereby cooling the surface of the isolation sleeve 23 and improving its sealing performance to prevent leakage of high-temperature media.

[0045] The high-temperature resistant and cavitation-resistant magnetic pump provided in this embodiment of the invention, driven by the drive motor 10, causes the magnetic coupling 22 to rotate inside the pump body shell 21, thereby drawing and transporting high-temperature liquid. During use, cooling medium is continuously input and output into the double-layer jacket structure of the pump body shell 21 and the isolation sleeve 23, thereby cooling the pump body shell 21 and the isolation sleeve 23. This prevents the pump body shell 21 and the isolation sleeve 23 from deforming or failing to seal in high-temperature environments, making the magnetic pump more suitable for high-temperature environments. That is, it can maintain stable operation and sealing effect in high-temperature environments. The cooling medium transported into the pump body shell 21 and the isolation sleeve 23 is stored in an external storage tank and is transported and discharged through the liquid inlet and liquid outlet on the pump body shell 21, thereby allowing the cooling medium to be recycled and flow in the pump body shell 21 and the isolation sleeve 23.

[0046] According to the high-temperature resistant and cavitation-resistant magnetic pump provided in this embodiment of the present invention, the magnetic coupling 22 includes an outer magnetic rotor 221, which is fixedly sleeved on the drive rod of the drive motor 10; and an inner magnetic rotor 222, which is embedded in the outer magnetic rotor 221; wherein, an isolation sleeve 23 is embedded between the outer magnetic rotor 221 and the inner magnetic rotor 222, and the isolation sleeve 23 separates the inner magnetic rotor 222 and the outer magnetic rotor 221 so that the two do not come into contact with each other.

[0047] Figure 3 and Figure 4 A high-temperature resistant and cavitation-resistant magnetic pump is implemented. The magnetic coupling 22 is formed by combining an outer magnetic rotor 221, an inner magnetic rotor 222, and an isolation sleeve 23. The first end of the outer magnetic rotor 221 is fixedly sleeved on the drive end of the drive motor 10, and the second end of the outer magnetic rotor 221 is inlaid with the isolation sleeve 23, thus placing the isolation sleeve 23 in the outer magnetic rotor 221. The inner magnetic rotor 222 is inlaid at the end of the isolation sleeve 23 away from the outer magnetic rotor 221. The outer surface of the inner magnetic rotor 222 and the inner surface of the outer magnetic rotor 221 are arranged opposite to each other and separated by the isolation sleeve 23. This allows the outer magnetic rotor 221 and the inner magnetic rotor 222 to rotate on both sides of the isolation sleeve 23, while keeping the isolation sleeve 23 stationary. This enables the inner magnetic rotor 222 and the outer magnetic rotor 221 to be driven, thereby achieving the extraction of liquid.

[0048] According to the high-temperature resistant and cavitation-resistant magnetic pump provided in this utility model embodiment, magnetic plates 223 are arranged opposite to the inner wall of the outer magnetic rotor 221 and the outer wall of the inner magnetic rotor 222. The magnetic plates 223 are even-numbered poles and are arranged in a circular pattern in an N and S cross manner.

[0049] Figure 4 and Figure 5 A high-temperature resistant and cavitation-resistant magnetic pump was implemented. Magnetic plates 223 were arranged in a staggered manner on the inner wall of the outer magnetic rotor 221 and the outer wall of the inner magnetic rotor 222. The magnetic plates 223 had an even number of poles and were arranged in a circular pattern with N and S poles. The thickness and number of magnetic plates 223 were increased, making the thickness greater than that of magnetic plates 223 in the prior art, and the number of magnetic plates 223 was also greater than that in the prior art. This design improved the torque capacity between the inner magnetic rotor 222 and the outer magnetic rotor 221 of the magnetic coupling 22, so that the torque of the motor could be stably transmitted under high temperature and high load conditions, thereby ensuring the stable operation of the pump 20 and improving the overall pumping effect of the device, enabling better stable operation under high temperature conditions.

[0050] According to the high temperature resistant and cavitation resistant magnetic pump provided in the embodiment of this utility model, a connecting shaft 224 is fixedly provided at the end of the inner magnetic rotor 222 away from the outer magnetic rotor 221, and an impeller 24 is sleeved on the connecting shaft 224; wherein, the impeller 24 is driven to rotate under the rotation of the inner magnetic rotor 222.

[0051] Figure 4 A high-temperature resistant and cavitation-resistant magnetic pump is implemented. A connecting shaft 224 is fixedly installed at the end of the inner magnetic rotor 222 away from the outer magnetic rotor 221. An impeller 24 is sleeved on the connecting shaft 224, so that the impeller 24 is driven by the rotation of the inner magnetic rotor 222, causing the impeller 24 to rotate and extract liquid. The rotation of the inner magnetic rotor 222 is driven by the outer magnetic rotor 221 and rotates under the action of the magnetic plate 223, so that the rotation of the inner magnetic rotor 222 drives the impeller 24 to rotate, thereby extracting liquid.

[0052] According to the high-temperature resistant and cavitation-resistant magnetic pump provided in this embodiment of the present invention, the blades of the impeller 24 are in a twisted wave shape, and the number of blades of the impeller 24 is not less than 10.

[0053] Figure 4 A high-temperature resistant and cavitation-resistant magnetic pump was implemented. The blades of the impeller 24 were designed as twisted waves, and the number of blades was set to no less than 10, thereby increasing the flow channel area of ​​the blades, making the liquid flow more smoothly in the impeller 24, reducing the local pressure of the liquid, and thus reducing the probability of cavitation. The increase in the number of blades improved the cavitation resistance of the impeller 24, making the impeller 24 rotate more stably in high-temperature environments, and also better reducing the occurrence of cavitation on the surface of the impeller 24.

[0054] According to the embodiment of the present invention, a high-temperature resistant and cavitation-resistant magnetic pump is provided with an inlet pipe 25 through the end of the pump body shell 21 away from the drive motor 10, and an outlet pipe 26 through the side wall of the end of the pump body shell 21 away from the drive motor 10. A guide plate 251 is fixedly provided on the inner wall of the inlet pipe 25.

[0055] Figure 1 and Figure 2A high-temperature resistant and cavitation-resistant magnetic pump was implemented. An inlet pipe 25 was opened through the pump body shell 21 at the end away from the drive motor 10, and an outlet pipe 26 was opened through the side wall of the pump body shell 21 at the end away from the drive motor 10. At the same time, a guide plate 251 was fixedly installed on the inner wall of the inlet pipe 25. The magnetic pump was installed between the delivery pipeline through the inlet pipe 25 and the outlet pipe 26, so that the liquid to be delivered could be pumped and delivered by the magnetic pump. The guide plate 251 installed at the inlet pipe 25 can make the liquid enter the pump body more smoothly, reduce the turbulence and impact of the liquid, and reduce the possibility of cavitation. This reduces the effect of cavitation when pumping liquid, improves the service life of the device, and makes the device operate more stably.

[0056] Usage process:

[0057] In use, the magnetic pump is installed at the location where liquid needs to be extracted via the inlet pipe 25 and outlet pipe 26 on the pump body housing 21. During operation, the drive motor 10 drives the outer magnetic rotor 221 to rotate, which in turn drives the inner magnetic rotor 222 to rotate under the action of the magnetic plates 223 on the outer magnetic rotor 221. The outer and inner magnetic rotors 221 do not contact each other; an isolation sleeve 23 is placed between them. The outer edge of the isolation sleeve 23 is in close contact with the inner wall of the pump body housing 21, thus separating the outer and inner magnetic rotors 221 and preventing the extracted high-temperature liquid from flowing onto the outer magnetic rotor 221. The inner magnetic rotor 222 drives the impeller 24 to rotate, thereby extracting the liquid. The pump body housing 21 and the isolation sleeve 23 are designed as a double-layer jacket structure. An inlet and an outlet are provided through the outer shell 21 and the isolation sleeve 23. Cooling medium, which can be water or coolant, is introduced into the double-layered jacket structure of the pump body shell 21 and the isolation sleeve 23 through the inlet and outlet. This cools the pump body shell 21 and the isolation sleeve 23, preventing deformation and sealing failure due to high temperatures during operation. The cooling medium flows in through the inlet, then through the pump body shell 21 and the isolation sleeve 23, and finally out through the outlet, thus keeping the cooling medium in a flowing state within the pump body shell 21 and the isolation sleeve 23. This further cools the pump body shell 21 and the isolation sleeve 23, making the magnetic pump more suitable for high-temperature environments and solving the problem of sealing failure and component deformation in existing magnetic pumps at high temperatures.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-temperature-resistant anti-cavitation magnetic drive pump, characterized in that, The utility model relates to a kind of liquid pumping device, including: Drive motor (10); Liquid pumping pump (20), which is detachably mounted on the drive end of the drive motor (10); Wherein, the liquid pumping pump (20) includes: Pump body shell (21), which is a double-layer jacket structure and is detachably mounted on the drive end of the drive motor (10); Magnetic coupling (22), one end of which is fixedly sleeved on the drive rod of the drive motor (10); Isolation sleeve (23), which is inlaid at the middle position of the magnetic coupling (22), and the isolation sleeve (23) is a double-layer jacket structure; Wherein, the pump body shell (21) is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet penetrate the pump body shell (21) and the isolation sleeve (23), and input cooling liquid into the double-layer jacket structure of the pump body shell (21) and the isolation sleeve (23).

2. The high-temperature resistant anti-cavitation magnetic drive pump of claim 1, wherein, The magnetic coupling (22) includes: Outer magnetic rotor (221), which is fixedly sleeved on the drive rod of the drive motor (10); Inner magnetic rotor (222), which is inlaid in the outer magnetic rotor (221); Wherein, the isolation sleeve (23) is inlaid between the outer magnetic rotor (221) and the inner magnetic rotor (222), and the isolation sleeve (23) separates the inner magnetic rotor (222) and the outer magnetic rotor (221), so that they do not contact each other.

3. The high-temperature resistant anti-cavitation magnetic drive pump of claim 2, wherein, The inner wall of the outer magnetic rotor (221) and the outer wall of the inner magnetic rotor (222) are oppositely provided with magnetic force sheets (223), and the magnetic force sheets (223) are even-pole and circumferentially arranged in N-S cross mode.

4. The high-temperature resistant anti-cavitation magnetic drive pump of claim 2, wherein, The inner magnetic rotor (222) is fixedly provided with a connecting shaft (224) at one end away from the outer magnetic rotor (221), and the connecting shaft (224) is sleeved with an impeller (24); Wherein, the impeller (24) is driven to rotate under the rotation of the inner magnetic rotor (222).

5. A high-temperature-resistant anti-cavitation magnetic drive pump according to claim 4, characterized in that, The blades of the impeller (24) are twisted and wavy, and the number of the blades of the impeller (24) is not less than 10.

6. The high-temperature resistant anti-cavitation magnetic drive pump of claim 1, wherein, The pump body shell (21) is provided with a liquid inlet pipe (25) at one end away from the drive motor (10), and a liquid outlet pipe (26) is provided in the side wall at one end away from the drive motor (10), and the inner wall of the liquid inlet pipe (25) is fixedly provided with a flow guide plate (251).

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