Magnetic suspension pump with multiple outlets

Abstract

The utility model provides the magnetic suspension pump with the plurality of outlets, at least two outlets are arranged in the magnetic suspension pump, so that one outlet can be used as a main outlet of the pump, the other outlet can be used as an auxiliary outlet of the pump, and the outlet can be used as an auxiliary outlet of the pump before the pump is started for the first time or restarted after long-time shutdown. The auxiliary outlet can be used as an inlet for filling liquid into the pump cavity, so that the liquid can be conveniently filled into the pump cavity; meanwhile, when liquid is poured into the pump cavity, the auxiliary outlet can also serve as an exhaust port and is used for exhausting gas in the pump cavity; after the pump finishes working, the auxiliary outlet can be used as an outlet for discharging the liquid in the pump cavity, so that the residual liquid in the pump cavity can be conveniently discharged; in the working process of the pump, part of liquid can be led out through the auxiliary outlet to enter a cooling system of the motor to serve as cooling liquid of the motor, and the motor is cooled.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic levitation pumps, and in particular to a magnetic levitation pump with multiple outlets. Background Art

[0002] The magnetic levitation pump is an advanced pumping equipment that uses magnetic levitation technology and magnetic drive principles. Its notable feature is that it uses magnetic force to achieve contactless suspension and drive of the rotor, thereby eliminating the efficiency loss, increased maintenance costs, and possible leakage pollution caused by mechanical friction, seal wear, and other problems in traditional pumps. Due to its unique contactless suspension technology, the magnetic levitation pump has been widely used in many fields. For example, in the pharmaceutical and biotechnology fields, it is used to transport liquid medicines, cell culture fluids, vaccines, etc.; in the semiconductor field, it is used for high-purity liquid transportation, equipment cooling, precise flow control, etc., providing strong support for the stability, efficiency, cleanliness, and precision of semiconductor manufacturing processes.

[0003] Before the magnetic levitation pump is started for the first time or restarted after a long shutdown, a certain amount of liquid needs to be pre-filled into the pump chamber. In the prior art, magnetic levitation pumps are mainly used in pipeline pressurization scenarios. The liquid is automatically filled by the pressure fluid in the pipeline, and no independent filling port is set, which makes it inconvenient to fill the existing magnetic levitation pumps when there is no pressure fluid in the inlet pipeline. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a magnetic levitation pump with multiple outlets, including a motor, a pump body, a rotor and a pump cover; the motor is arranged on one side of the pump body, and the pump cover is arranged on the other side of the pump body; a pump cavity is formed between the pump cover and the pump body, and the rotor is suspended and contactlessly arranged in the pump cavity; the pump cover is provided with an inlet for liquid inflow, and the pump body is provided with at least two outlets.

[0005] In some embodiments of the present application, a first outlet and a second outlet are provided on the pump body.

[0006] In some embodiments of the present application, a third outlet is also provided on the pump body.

[0007] In some embodiments of the present application, the first outlet includes a first cavity, a second cavity and a third cavity, and the first cavity, the second cavity and the third cavity are interconnected.

[0008] In some embodiments of the present application, the diameter of the third cavity is greater than the diameter of the first cavity.

[0009] In some embodiments of the present application, the second outlet is arranged at the top of the pump chamber.

[0010] In some embodiments of the present application, the second outlet is arranged at the bottom of the pump chamber.

[0011] In some embodiments of the present application, the second outlet is arranged on the side of the pump chamber.

[0012] In some embodiments of the present application, the third outlet is arranged at the bottom of the pump chamber.

[0013] In some embodiments of the present application, a first solenoid valve is disposed on the second outlet, and a second solenoid valve is disposed on the third outlet.

[0014] Compared with the prior art, the utility model has the following advantages and beneficial effects: the magnetic levitation pump with multiple outlets of the present application is provided with at least two outlets, so that one outlet can be used as the main outlet of the pump, and the other outlet can be used as the auxiliary outlet of the pump. Before the pump is started for the first time or restarted after a long period of shutdown, the auxiliary outlet can be used as an inlet for filling liquid into the pump chamber to facilitate the filling of liquid into the pump chamber; at the same time, when filling liquid into the pump chamber, the auxiliary outlet can also be used as an exhaust port to discharge the gas in the pump chamber; after the pump is finished working, the auxiliary outlet can also be used as an outlet for discharging the liquid in the pump chamber to facilitate the discharge of the residual liquid in the pump chamber; during the operation of the pump, part of the liquid can also be led out through the auxiliary outlet into the cooling system of the motor as a coolant for the motor to cool the motor.

[0015] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of this document are used to provide a further understanding of this document. The exemplary embodiments and descriptions of this document are used to explain this document and do not constitute an improper limitation on this document. In the accompanying drawings:

[0017] Figure 1 is a front view of a magnetic levitation pump with multiple outlets provided by an exemplary embodiment of the present application;

[0018] Figure 2 is a left side view of a magnetic levitation pump with multiple outlets provided by an exemplary embodiment of the present application;

[0019] Figure 3 is a top view of a magnetic levitation pump with multiple outlets provided by an exemplary embodiment of the present application;

[0020] Figure 4 is a partial cross-sectional view of a magnetic levitation pump with multiple outlets provided by an exemplary embodiment of the present application;

[0021] Figure 5is a front view of a pump body provided by an exemplary embodiment of the present application;

[0022] Figure 6 is a cross-sectional view of a pump body provided by a first exemplary embodiment of the present application;

[0023] Figure 7 is a cross-sectional view of a pump body provided by a second exemplary embodiment of the present application;

[0024] Figure 8 is a cross-sectional view of a pump body provided by a third exemplary embodiment of the present application;

[0025] Fig. 9 is a cross-sectional view of a pump body provided by a fourth exemplary embodiment of the present application;

[0026] Fig.10 It is a cross-sectional view of a pump body provided by a fifth exemplary embodiment of the present application.

[0027] In the figure:

[0028] 20. Pump body; 201. Pump chamber; 202. First outlet; 2021. First cavity; 2022. Second cavity; 2023. Third cavity; 203. Second outlet; 204. Third outlet; 206. First solenoid valve; 30. Pump cover; 301. Inlet; 40. Motor; 50. Rotor. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0030] Before the magnetic levitation pump is started for the first time or restarted after a long shutdown, a certain amount of liquid needs to be pre-filled into the pump chamber. In the prior art, magnetic levitation pumps are mainly used in pipeline pressurization scenarios. The liquid is automatically filled by the pressure fluid in the pipeline, and no independent filling port is set, which makes it inconvenient to fill the existing magnetic levitation pumps when there is no pressure fluid in the inlet pipeline.

[0031] Based on this, an exemplary embodiment of the present application provides a magnetic levitation pump with multiple outlets, in which at least two outlets are arranged, so that one outlet can be used as the main outlet of the pump, and the other outlet can be used as the auxiliary outlet of the pump. Before the pump is started for the first time or restarted after a long period of shutdown, the auxiliary outlet can be used as an inlet for filling liquid into the pump chamber to facilitate the filling of liquid into the pump chamber; at the same time, when filling liquid into the pump chamber, the auxiliary outlet can also be used as an exhaust port to discharge the gas in the pump chamber; after the pump is finished working, the auxiliary outlet can also be used as an outlet for discharging the liquid in the pump chamber, to facilitate the discharge of residual liquid in the pump chamber; during the operation of the pump, part of the liquid can also be led out through the auxiliary outlet into the cooling system of the motor as a coolant for the motor to cool the motor.

[0032] An exemplary embodiment of the present application provides a magnetic suspension pump having multiple outlets, such as Figures 1 to 5 As shown, the pump includes a motor 40, a pump body 20, a rotor 50 and a pump cover 30; the motor 40 is arranged on one side of the pump body 20, and the pump cover 30 is arranged on the other side of the pump body 20; a pump cavity 201 is formed between the pump cover 30 and the pump body 20, and the rotor 50 is suspended and non-contactedly arranged in the pump cavity 201; an inlet 301 for liquid inflow is arranged on the pump cover 30, and at least two outlets are arranged on the pump body 20. Among them, one outlet can be used as the main outlet of the pump, as the main circulation outlet of the liquid; the other outlet can be used as the auxiliary outlet of the pump. Before the pump is started for the first time or restarted after a long period of shutdown, the auxiliary outlet can be used as the inlet for filling liquid into the pump chamber 201, so as to facilitate the process of filling liquid into the pump chamber 201 and starting the pump; at the same time, when filling liquid into the pump chamber 201, the auxiliary outlet can also be used as an exhaust port to discharge the gas in the pump chamber 201; after the pump is finished working, the auxiliary outlet can also be used as an outlet for discharging liquid in the pump chamber 201, so as to facilitate the discharge of residual liquid in the pump chamber 201; during the operation of the pump, part of the liquid can also be led out through the auxiliary outlet into the cooling system of the motor 40, as a coolant for the motor 40, to cool the motor 40.

[0033] like Figures 6 to 9As shown, the pump body 20 is provided with a first outlet 202 and a second outlet 203. The first outlet 202 is the main outlet of the pump, and is used to discharge the liquid and gas in the pump cavity 201 during the operation of the pump. In one embodiment, the first outlet 202 includes a first cavity 2021, a second cavity 2022 and a third cavity 2023, and the first cavity 2021, the second cavity 2022 and the third cavity 2023 are interconnected, and are used to discharge the liquid and gas in the pump cavity 201. Preferably, the diameter of the third cavity 2023 is greater than the diameter of the first cavity 2021, and the second cavity 2022 connects the first cavity 2021 and the third cavity 2023, so that the diameter of the second cavity 2022 gradually changes. The size of the first cavity 2021 determines the flow rate of the pump, and therefore, first cavities 2021 of different sizes can be set to change the flow rate of the pump and obtain pumps with different flow ranges.

[0034] There are many options for the location of the second outlet 203, which is not limited to the locations defined in the following embodiments. The second outlet 203 can be arranged at different locations to obtain different functions. The following will be described using different embodiments.

[0035] Embodiment 1, as Figure 6As shown, the second outlet 203 is arranged at the top of the pump chamber 201, and the first solenoid valve 206 or pump plug is arranged on the second outlet 203. Under the control of the control system, the first solenoid valve 206 can control the closing and opening of the second outlet 203. At this time, the second outlet 203 can be arranged at the highest point of the pump chamber 201, or it can not be arranged at the highest point of the pump chamber 201. Before the pump is started for the first time or restarted after a long shutdown, the second outlet 203 can be used as an inlet for pouring liquid into the pump chamber 201. At this time, since the height of the second outlet 203 is much higher than the height of the pump chamber 201, liquid can be poured into the pump chamber 201 through the second outlet 203. At the same time, if liquid is poured into the pump chamber 201 through the inlet 301, when pouring liquid into the pump chamber 201, the second outlet 203 can be used as an exhaust port to discharge the gas in the pump chamber 201. If the first outlet 202 is blocked by an object, if there is no second outlet 203, the gas in the pump chamber 201 cannot be discharged when pouring liquid into the pump chamber 201, and it is difficult to pour liquid into the pump chamber 201. However, if the second outlet 203 is provided, the second outlet 203 can be used as the main exhaust port to discharge the gas in the pump chamber 201 to complete the work of pouring liquid and facilitate the pump startup process. After the pump is finished working, the second outlet 203 can also be used as an outlet to discharge the liquid in the pump chamber 201 to facilitate the discharge of the residual liquid in the pump chamber 201. During the operation of the pump, a large amount of heat is usually generated in the motor 40 due to the effect of the magnetic field. Therefore, the motor 40 needs to be cooled down during the operation. At this time, part of the liquid can be drawn out through the second outlet 203, and part of the liquid in the pump chamber 201 can be allowed to enter the cooling system of the motor 40 through a pipeline, and serve as the coolant of the motor 40 to cool the motor 40.

[0036] If the second outlet 203 is disposed at the highest point of the pump chamber 201 , since the first outlet 202 is not disposed at the highest point of the pump chamber 201 , in the initial stage of pump startup, the gas that cannot be discharged through the first outlet 202 can be completely discharged through the second outlet 203 .

[0037] Embodiment 2, as Figure 7 As shown, the second outlet 203 is arranged at the bottom of the pump chamber 201. At this time, the second outlet 203 can be arranged at the lowest point of the pump chamber 201, or it can be arranged not at the lowest point of the pump chamber 201. After the pump is finished working, the second outlet 203 can be used as an outlet to discharge the liquid in the pump chamber 201, so as to facilitate the discharge of the residual liquid in the pump chamber 201. At the same time, part of the liquid can be drawn out through the second outlet 203, and part of the liquid in the pump chamber 201 can be made to enter the cooling system of the motor 40 through the pipeline, and serve as the coolant of the motor 40 to cool the motor 40.

[0038] Embodiment three, as Figure 8 and9 As shown, the second outlet 203 is arranged on the side of the pump chamber 201. At this time, the second outlet 203 can be arranged on the same side of the first outlet 202, or on the side away from the first outlet 202. In the early stage of pouring liquid into the pump chamber 201, the second outlet 203 can be used as an outlet for exhaust. After the pump is finished working, the second outlet 203 can be used as an outlet for discharging the liquid in the pump chamber 201 to facilitate the discharge of the residual liquid in the pump chamber 201. At the same time, part of the liquid can be drawn out through the second outlet 203, and part of the liquid in the pump chamber 201 can be made to enter the cooling system of the motor 40 through a pipeline, and serve as a coolant for the motor 40 to cool the motor 40.

[0039] Embodiment 4, as Fig.10 As shown, the pump body 20 is also provided with a third outlet 204, and the third outlet 204 is provided with a second solenoid valve or a pump plug. Under the control of the control system, the second solenoid valve can control the closing and opening of the third outlet 204. Preferably, the second outlet 203 is arranged at the top of the pump chamber 201, and the third outlet 204 is arranged at the bottom of the pump chamber 201. At this time, since the height of the second outlet 203 is much higher than the height of the pump chamber 201, liquid can be poured into the pump chamber 201 through the second outlet 203. At the same time, if liquid is poured into the pump chamber 201 through the inlet 301, when pouring liquid into the pump chamber 201, the second outlet 203 can be used as an exhaust port for discharging gas in the pump chamber 201. After the pump is finished working, the third outlet 204 can be used as an outlet for discharging liquid in the pump chamber 201 to facilitate the discharge of residual liquid in the pump chamber 201. Part of the liquid can be drawn out through the second outlet 203 or the third outlet 204 , and part of the liquid in the pump chamber 201 can enter the cooling system of the motor 40 through a pipeline to serve as the coolant of the motor 40 to cool the motor 40 .

[0040] The magnetic levitation pump with multiple outlets of the present application is provided with multiple outlets to facilitate functions such as filling liquid into the pump chamber 201, exhausting air, discharging residual liquid, and providing cooling liquid to the motor 40.

[0041] In this application, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or device. In the absence of more restrictions, the elements defined by the sentence "comprising..." do not exclude the presence of other identical elements in the article or device comprising the elements.

[0042] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0043] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the intention of the present application also includes these modifications and variations.

Claims

1. A magnetic levitation pump with multiple outlets, characterized in that: It includes a motor, a pump body, a rotor and a pump cover; the motor is arranged on one side of the pump body, and the pump cover is arranged on the other side of the pump body; a pump cavity is formed between the pump cover and the pump body, and the rotor is suspended and non-contactedly arranged in the pump cavity; the pump cover is provided with an inlet for liquid inflow, and the pump body is provided with at least two outlets.

2. The magnetic levitation pump with multiple outlets according to claim 1, characterized in that: The pump body is provided with a first outlet and a second outlet.

3. The magnetic levitation pump with multiple outlets according to claim 2, characterized in that: The pump body is also provided with a third outlet.

4. The magnetic levitation pump with multiple outlets according to claim 2, characterized in that: The first outlet includes a first cavity, a second cavity and a third cavity, and the first cavity, the second cavity and the third cavity are connected to each other.

5. The magnetic levitation pump with multiple outlets according to claim 4, characterized in that: The diameter of the third cavity is greater than the diameter of the first cavity.

6. The magnetic levitation pump with multiple outlets according to claim 2, characterized in that: The second outlet is disposed at the top of the pump chamber.

7. The magnetic levitation pump with multiple outlets according to claim 2, characterized in that: The second outlet is disposed at the bottom of the pump chamber.

8. The magnetic levitation pump with multiple outlets according to claim 2, characterized in that: The second outlet is arranged on a side of the pump chamber.

9. The magnetic levitation pump with multiple outlets according to claim 3, characterized in that: The third outlet is arranged at the bottom of the pump chamber.

10. The magnetic levitation pump with multiple outlets according to claim 3, characterized in that: The second outlet is provided with a first solenoid valve, and the third outlet is provided with a second solenoid valve.

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