Magnetic drive pump

Abstract

The invention provides a magnetic drive pump, which belongs to the technical field of electric pumps, and comprises: a housing provided with an accommodating cavity; the water separation piece is arranged in the containing cavity and divides the containing cavity into a driving cavity and a pump cavity; the driving rotating shaft is located in the driving cavity, the driving rotating shaft can rotate relative to the shell, and the driving rotating shaft is provided with a first magnetic attraction piece; the impeller is located in the pump cavity, the impeller can rotate relative to the shell, the impeller is provided with a second magnetic attraction part, the first magnetic attraction part and the second magnetic attraction part attract each other, and the driving rotating shaft drives the impeller to rotate synchronously when rotating. The magnetic drive pump has the beneficial effects that the first magnetic attraction piece and the second magnetic attraction piece attract each other, the impeller is driven to rotate synchronously when the driving rotating shaft rotates, therefore, the driving end of the driving rotating shaft can be driven to rotate through an external motor, the impeller is driven to rotate synchronously, the magnetic drive pump is compact and small in overall structure, and different motors can be selected according to actual requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of electric pumps and relates to a magnetic pump. Background Art

[0002] With the development of electric vehicles and hybrid vehicles, traditional mechanically driven water pumps are gradually being replaced by electric water pumps, because the latter can control the coolant flow more accurately according to actual needs, improve efficiency and reduce energy consumption. At present, the pump body of the electric water pump is divided into a pump chamber and a drive chamber by a water barrier. Generally, the rotor and impeller are arranged in the pump chamber, and the stator is arranged in the drive chamber to achieve driving under water isolation. However, this method is equivalent to integrating the motor into the water pump. Some electric pumps require the motor to be external. At this time, this setting method cannot be realized, so there is a lot of room for improvement. Summary of the Invention

[0003] The purpose of the present invention is to address the above-mentioned problems in the prior art and to provide a magnetic pump.

[0004] The object of the present invention can be achieved through the following technical solutions: A magnetic pump comprising: a housing provided with a receiving cavity; a water-blocking member, which is disposed in the accommodating chamber and divides the accommodating chamber into a driving chamber and a pump chamber; a driving shaft, located in the driving cavity, rotatable relative to the housing, and provided with a first magnetic member; The impeller is located in the pump chamber and can rotate relative to the housing. The impeller is provided with a second magnetic member. The first magnetic member and the second magnetic member attract each other. When the driving shaft rotates, the impeller is driven to rotate synchronously.

[0005] In the above-mentioned magnetic pump, the first magnetic component is a hard magnetic component, and the second magnetic component is a soft magnetic component.

[0006] In the above-mentioned magnetic pump, the middle part of the water baffle is bent toward the driving shaft to form a bent portion, the outer periphery of the driving shaft extends toward the water baffle to form a first extension portion, the first extension portion is located outside the bent portion, the middle part of the impeller extends toward the bent portion to form a second extension portion, the second extension portion is located inside the bent portion, and the bent portion is located between the first extension portion and the second extension portion.

[0007] In the above-mentioned magnetic pump, the first magnetic member is disposed on the first extension portion, and the second magnetic member is disposed on the second extension portion.

[0008] In the above-mentioned magnetic pump, the shell includes a pump body and a pump cover, the pump cover is connected to the pump body, the drive chamber is formed between the pump body and the water barrier, the pump cover is provided with an inlet and an outlet, the pump chamber is formed between the pump cover and the water barrier, and the inlet is connected to the outlet through the pump chamber.

[0009] In the above-mentioned magnetic pump, it also includes a fixed shaft, which is located in the pump chamber, and the two ends of the fixed shaft are respectively connected to the pump cover and the water barrier, and the impeller is rotatably connected to the fixed shaft.

[0010] In the above-mentioned magnetic pump, the pump cover is further provided with a first slot, the water barrier is provided with a second slot, and both ends of the fixed shaft are respectively inserted into the first slot and the second slot.

[0011] The above-mentioned magnetic pump further includes a bearing, which is located in the pump chamber and between the impeller and the fixed shaft. The impeller is rotatably connected to the fixed shaft through the bearing.

[0012] In the above-mentioned magnetic pump, the pump body is provided with a driving port, the driving cavity is communicated with the outside through the driving port, and the middle portion of the driving shaft extends toward the driving port and protrudes from the driving port to form a driving end.

[0013] The above-mentioned magnetic pump further includes a sealing member, which is located in the pump chamber and between the pump cover and the water barrier. The pump cover is in contact with the water barrier through the sealing member.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the first magnetic member and the second magnetic member attract each other, and when the driving shaft rotates, the impeller is driven to rotate synchronously. Therefore, the driving end of the driving shaft can be driven to rotate by an external motor, thereby driving the impeller to rotate synchronously. The overall structure of the magnetic pump is compact and small, and different motors can be selected according to actual needs; the first extension part formed by the outer periphery of the driving shaft extending toward the water barrier is located outside the bending part, and the second extension part formed by the middle part of the impeller extending toward the bending part is located inside the bending part. The bending part is located between the first extension part and the second extension part, and can simultaneously limit the rotation of the first extension part and the second extension part; the first magnetic member is arranged on the first extension part, and the second magnetic member is arranged on the second extension part. The bending part is located between the first magnetic member and the second magnetic member, and the first magnetic member and the second magnetic member are respectively close to both sides of the bending part, so that the first magnetic member and the second magnetic member are as close as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded view of the magnetic pump of the present invention.

[0016] Figure 2 This is an exploded view of the magnetic pump of the present invention from another perspective.

[0017] Figure 3 It is a top view of the magnetic pump of the present invention.

[0018] Figure 4 for Figure 3 Cross-sectional view from the AA perspective.

[0019] Figure 5 for Figure 4 Exploded diagram.

[0020] Figure 6 It is a front view of the magnetic pump of the present invention.

[0021] Figure 7 for Figure 6 Cross-sectional view from the BB perspective.

[0022] In the figure, 100, casing; 110, pump body; 111, drive chamber; 112, drive port; 120, pump cover; 121, pump chamber; 122, inlet; 123, outlet; 124, first slot; 200, water barrier; 210, bending portion; 220, second slot; 300, drive shaft; 310, first magnetic member; 320, first extension portion; 330, drive end; 400, impeller; 410, second magnetic member; 420, second extension portion; 500, fixed shaft; 600, bearing; 700, seal. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, in the present invention, descriptions such as "first," "second," and "one" are for descriptive purposes only and should not be understood to indicate or imply their relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0029] like Figure 1-Figure 7 As shown, a magnetic pump includes: a housing 100, a water barrier 200, a driving shaft 300 and an impeller 400.

[0030] The housing 100 is provided with a receiving cavity.

[0031] Specifically, the housing 100 may be mounted on other components.

[0032] The water barrier 200 is disposed in the accommodating chamber and divides the accommodating chamber into a driving chamber 111 and a pump chamber 121 .

[0033] Specifically, the water barrier 200 is used to separate the drive chamber 111 and the pump chamber 121 to prevent the medium from entering the drive chamber 111 from the pump chamber 121, causing the drive structure inside the pump body to be damaged by the medium.

[0034] The driving shaft 300 is located in the driving cavity 111 . The driving shaft 300 can rotate relative to the housing 100 . The driving shaft 300 is provided with a first magnetic member 310 .

[0035] Among them, the impeller 400 is located in the pump chamber 121, and the impeller 400 can rotate relative to the housing 100. The impeller 400 is provided with a second magnetic component 410. The first magnetic component 310 and the second magnetic component 410 attract each other, and when the driving shaft 300 rotates, the impeller 400 is driven to rotate synchronously.

[0036] Specifically, the impeller 400 is used to convert the mechanical energy transmitted by the driving shaft 300 through the first magnetic member 310 and the second magnetic member 410 into pressure energy and kinetic energy of the fluid.

[0037] In the existing technology, the pump body of the electric water pump is divided into a pump chamber and a drive chamber by a water-isolating member. Generally, the rotor and impeller are arranged in the pump chamber, and the stator is arranged in the drive chamber to achieve driving under water-isolating conditions. However, this method is equivalent to integrating the motor into the water pump. Some electric pumps require the motor to be external, and this setting method cannot be achieved at this time.

[0038] In this embodiment, the first magnetic member 310 and the second magnetic member 410 attract each other, and when the driving shaft 300 rotates, the impeller 400 is driven to rotate synchronously. Therefore, the driving end 330 of the driving shaft 300 can be driven to rotate by an external motor, thereby driving the impeller 400 to rotate synchronously. The overall structure of the magnetic pump is compact and small, and different motors can be selected according to actual needs.

[0039] Specifically, as one embodiment, the first magnetic component 310 is a hard magnetic component, and the second magnetic component 410 is a soft magnetic component.

[0040] Specifically, as another embodiment, the first magnetic component 310 is a soft magnetic component, and the second magnetic component 410 is a hard magnetic component.

[0041] Specifically, as another embodiment, the first magnetic component 310 and the second magnetic component 410 are both hard magnetic components, and the polarity of the side of the first magnetic component 310 close to the second magnetic component 410 is opposite to the polarity of the side of the second magnetic component 410 close to the first magnetic component 310.

[0042] like Figure 1-Figure 7 As shown, on the basis of the above embodiment, the middle part of the water barrier 200 is bent toward the driving shaft 300 to form a bending portion 210, and the outer periphery of the driving shaft 300 extends toward the water barrier 200 to form a first extension portion 320, and the first extension portion 320 is located outside the bending portion 210. The middle part of the impeller 400 extends toward the bending portion 210 to form a second extension portion 420, and the second extension portion 420 is located inside the bending portion 210, and the bending portion 210 is located between the first extension portion 320 and the second extension portion 420.

[0043] In this embodiment, the first extension portion 320 formed by extending from the outer periphery of the driving shaft 300 toward the water barrier 200 is located outside the bending portion 210, and the second extension portion 420 formed by extending from the middle portion of the impeller 400 toward the bending portion 210 is located inside the bending portion 210. The bending portion 210 is located between the first extension portion 320 and the second extension portion 420, and can simultaneously limit the rotation of the first extension portion 320 and the second extension portion 420.

[0044] like Figure 1-Figure 7 As shown, based on the above embodiment, the first magnetic member 310 is disposed on the first extension portion 320 , and the second magnetic member 410 is disposed on the second extension portion 420 .

[0045] In this embodiment, the first magnetic component 310 is arranged on the first extension portion 320, the second magnetic component 410 is arranged on the second extension portion 420, and the bending portion 210 is located between the first magnetic component 310 and the second magnetic component 410. The first magnetic component 310 and the second magnetic component 410 are respectively close to the two sides of the bending portion 210, so that the first magnetic component 310 and the second magnetic component 410 are as close as possible.

[0046] like Figure 1-Figure 7 As shown, on the basis of the above embodiment, the housing 100 includes a pump body 110 and a pump cover 120, the pump cover 120 is connected to the pump body 110, the driving chamber 111 is formed between the pump body 110 and the water barrier 200, the pump cover 120 is provided with an inlet 122 and an outlet 123, the pump chamber 121 is formed between the pump cover 120 and the water barrier 200, and the inlet 122 is connected to the outlet 123 through the pump chamber 121.

[0047] In this embodiment, a drive chamber 111 is formed between the pump body 110 and the water baffle 200, a pump chamber 121 is formed between the pump cover 120 and the water baffle 200, the inlet 122 is connected with the outlet 123 through the pump chamber 121, and when the impeller 400 rotates, the medium can be pumped from the inlet 122 into the outlet 123.

[0048] like Figure 1-Figure 7 As shown, on the basis of the above embodiment, it also includes a fixed shaft 500, which is located in the pump chamber 121, and the two ends of the fixed shaft 500 are respectively connected to the pump cover 120 and the water barrier 200, and the impeller 400 is rotatably connected to the fixed shaft 500.

[0049] Specifically, the connection method of the fixed shaft 500 to the pump cover 120 and the water blocking member 200 is not specifically limited, and can be a fixed connection or a detachable connection.

[0050] In this embodiment, both ends of the fixed shaft 500 are respectively connected to the pump cover 120 and the water barrier 200, and the impeller 400 is rotatably connected to the fixed shaft 500, so that the impeller 400 can rotate stably relative to the housing 100 without shaking or swaying.

[0051] In addition, the two sides of the water barrier 200 can be arranged to contact the pump body 110 and the pump cover 120 respectively. The pump body 110 pushes the water barrier 200 to be pressed onto the pump cover 120. Therefore, after the pump cover 120 is removed from the pump body 110, the water barrier 200 can be automatically separated from the pump cover 120, making disassembly more convenient.

[0052] like Figure 1-Figure 7 As shown, based on the above embodiment, the pump cover 120 is further provided with a first slot 124, the water blocking member 200 is provided with a second slot 220, and both ends of the fixed shaft 500 are respectively inserted into the first slot 124 and the second slot 220.

[0053] In this embodiment, the two ends of the fixed shaft 500 are respectively inserted into the first slot 124 provided on the pump cover 120 and the second slot 220 provided on the water barrier 200, so that it is convenient to disassemble and replace. When replacing, it is only necessary to remove the water barrier 200 from the pump cover 120 to make the first slot 124 and the second slot 220 relatively distant from each other, and then the fixed shaft 500 can be removed.

[0054] like Figure 1-Figure 7 As shown, based on the above embodiment, a bearing 600 is further included. The bearing 600 is located in the pump chamber 121 and between the impeller 400 and the fixed shaft 500. The impeller 400 is rotatably connected to the fixed shaft 500 through the bearing 600.

[0055] Specifically, the type of the bearing 600 is not particularly limited.

[0056] In this embodiment, the bearing 600 is located in the pump chamber 121 and between the impeller 400 and the fixed shaft 500. The outside of the bearing 600 contacts the impeller 400, and the inside of the bearing 600 contacts the fixed shaft 500. The impeller 400 is rotatably connected to the fixed shaft 500 through the bearing 600, thereby converting the sliding friction between the impeller 400 and the fixed shaft 500 into rolling friction.

[0057] like Figure 1-Figure 7 As shown, based on the above embodiment, the pump body 110 is provided with a drive port 112, the drive cavity 111 is connected to the outside through the drive port 112, and the middle part of the drive shaft 300 extends toward the drive port 112 and extends out of the drive port 112 to form a drive end 330.

[0058] In this embodiment, the middle portion of the driving shaft 300 extends toward the driving port 112 and extends out of the driving port 112 to form a driving end 330. The driving end 330 is used to be connected to the output shaft of an external motor. The driving end 330 of the driving shaft 300 is driven to rotate by the external motor, thereby driving the impeller 400 to rotate synchronously.

[0059] like Figure 1-Figure 7 As shown, based on the above embodiment, a sealing member 700 is further included. The sealing member 700 is located in the pump chamber 121 and between the pump cover 120 and the water barrier 200. The pump cover 120 is in contact with the water barrier 200 through the sealing member 700.

[0060] In this embodiment, the seal 700 is located in the pump chamber 121 and between the pump cover 120 and the water barrier 200. The pump cover 120 contacts the water barrier 200 through the seal 700, thereby achieving a good sealing effect between the pump cover 120 and the water barrier 200.

Claims

1. A magnetic pump, characterized in that: include: a housing provided with a receiving cavity; a water-blocking member, which is disposed in the accommodating chamber and divides the accommodating chamber into a driving chamber and a pump chamber; a driving shaft, located in the driving cavity, rotatable relative to the housing, and provided with a first magnetic member; The impeller is located in the pump chamber and can rotate relative to the housing. The impeller is provided with a second magnetic member. The first magnetic member and the second magnetic member attract each other. When the driving shaft rotates, the impeller is driven to rotate synchronously.

2. A magnetic pump according to claim 1, characterized in that: The first magnetic component is a hard magnetic component, and the second magnetic component is a soft magnetic component.

3. A magnetic pump according to claim 1, characterized in that: The middle part of the water barrier is bent toward the driving shaft to form a bending portion, the outer periphery of the driving shaft extends toward the water barrier to form a first extension portion, the first extension portion is located outside the bending portion, the middle part of the impeller extends toward the bending portion to form a second extension portion, the second extension portion is located inside the bending portion, and the bending portion is located between the first extension portion and the second extension portion.

4. A magnetic pump according to claim 3, characterized in that: The first magnetic member is disposed on the first extension portion, and the second magnetic member is disposed on the second extension portion.

5. A magnetic pump according to claim 1, characterized in that: The shell includes a pump body and a pump cover, the pump cover is connected to the pump body, the drive chamber is formed between the pump body and the water barrier, the pump cover is provided with an inlet and an outlet, the pump chamber is formed between the pump cover and the water barrier, and the inlet is connected to the outlet through the pump chamber.

6. A magnetic pump according to claim 5, characterized in that: It also includes a fixed shaft, which is located in the pump chamber. Both ends of the fixed shaft are respectively connected to the pump cover and the water barrier, and the impeller is rotatably connected to the fixed shaft.

7. A magnetic pump according to claim 6, characterized in that: The pump cover is further provided with a first slot, the water blocking member is provided with a second slot, and both ends of the fixed shaft are respectively inserted into the first slot and the second slot.

8. A magnetic pump according to claim 7, characterized in that: The pump further comprises a bearing, wherein the bearing is located in the pump chamber and between the impeller and the fixed shaft, and the impeller is rotatably connected to the fixed shaft through the bearing.

9. A magnetic pump according to claim 3, characterized in that: The pump body is provided with a driving port, the driving cavity is communicated with the outside through the driving port, and the middle portion of the driving shaft extends toward the driving port and protrudes out of the driving port to form a driving end.

10. A magnetic pump according to claim 3, characterized in that: The pump further comprises a sealing member, which is located in the pump cavity and between the pump cover and the water barrier. The pump cover contacts the water barrier through the sealing member.

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