Miniature electromagnetic pump

Abstract

The miniature electromagnetic pump comprises an electromagnetic pump body and a flow meter assembly, the flow meter assembly is installed on the electromagnetic pump body and communicates with the electromagnetic pump body, and external water can be guided into the electromagnetic pump body through the flow meter assembly; the flowmeter assembly comprises a magnetic impeller and a Hall element, the magnetic impeller is configured to be of an integrated structure, and the magnetic impeller can rotate under pushing of flowing water so that the Hall element can sense the magnetic impeller and convert the magnetic impeller into a pulse number which is used for detecting the flow of the water. In this way, when the miniature electromagnetic pump works, the water flow is accurately controlled, whether water exists in the miniature electromagnetic pump or not can be detected, the water shortage protection function is integrated, the miniature electromagnetic pump can be prevented from being burnt out due to long-time dry pumping, the safety of the miniature electromagnetic pump is improved, and the service life of the miniature electromagnetic pump is prolonged. And the structure of the whole equipment applying the miniature electromagnetic pump is simplified, and the effect of reducing the cost is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to flow control, and particularly relates to a micro electromagnetic pump. Background Art

[0002] At present, the flow rate of micro electromagnetic pumps in the market cannot be accurately controlled, and it often occurs that the micro electromagnetic pump is dry-pumped and burned out due to water shortage, which cannot meet the requirements for high-precision flow rate. Moreover, there is a certain safety risk in the dry-pumping and burning out of the micro electromagnetic pump. Content of the Utility Model

[0003] In view of this, it is necessary to provide a micro electromagnetic pump for solving the above technical problems.

[0004] A micro electromagnetic pump includes an electromagnetic pump main body and a flowmeter assembly. The flowmeter assembly is installed on the electromagnetic pump main body and is connected to the electromagnetic pump main body. Moreover, external water can be introduced into the electromagnetic pump main body through the flowmeter assembly.

[0005] Among them, the flowmeter assembly includes a magnetic impeller and a Hall element. The magnetic impeller is configured as an integral structure. Moreover, the magnetic impeller can rotate under the push of the flowing water for the Hall element to sense and convert it into a pulse number for detecting the water flow rate.

[0006] It can be understood that the flowmeter assembly is used to detect the water flow rate when the micro electromagnetic pump works. In this way, not only can the water flow rate during the operation of the micro electromagnetic pump be accurately controlled, but also whether there is water in the micro electromagnetic pump can be detected, and a water shortage protection function is integrated. In this way, not only can the micro electromagnetic pump be prevented from being dry-pumped and burned out for a long time, improving the safety of the micro electromagnetic pump, but also the structure of the equipment whole machine applied with the micro electromagnetic pump can be simplified, which has the effect of reducing costs. In addition, since the magnetic impeller is integrated, the volume of the magnetic impeller can be small, meeting the usage requirements for supporting the micro electromagnetic pump.

[0007] In one embodiment, the material of the magnetic impeller includes magnetic powder and plastic material.

[0008] Among them, the magnetic powder and the plastic material are mixed and integrally formed into the magnetic impeller.

[0009] It can be understood that the magnetic powder and the plastic material are mixed and integrally formed, which is convenient for the production and preparation of the magnetic impeller and meets the usage requirements that the magnetic impeller can be sensed by the Hall element when rotating.

[0010] In one embodiment, the magnetic impeller has four blades, and the four blades are arranged at equal intervals along the rotation direction of the magnetic impeller.

[0011] In one embodiment, the electromagnetic pump body includes a magnetic isolation tube;

[0012] The flow meter assembly further includes a housing, the housing is connected and communicated with the magnetic isolation tube, the magnetic impeller is rotatably installed in a portion of the housing located outside the magnetic isolation tube, and the Hall element is fixedly installed in a portion of the housing located outside the magnetic isolation tube.

[0013] It can be understood that through the above structural arrangement, the flow meter assembly is a separate module and is assembled with the magnetic isolation tube on the electromagnetic pump body, so that the flow meter assembly can be independently produced and prepared, so that the micro electromagnetic pump can be obtained by making minor improvements on the basis of the original micro electromagnetic pump, and it is convenient for the production and preparation of the micro electromagnetic pump.

[0014] In one embodiment, the housing is assembled to the magnetic isolation tube in a plug-in fit manner.

[0015] It can be understood that the housing is assembled to the magnetic isolation tube in a plug-in fit manner, which is convenient for the assembly of the housing on the magnetic isolation tube and the assembly between the flow meter assembly and the electromagnetic pump body.

[0016] In one embodiment, a first sealing ring is assembled between the housing and the magnetic isolation tube, and the first sealing ring is deformed under pressure for assembling and sealing the housing and the magnetic isolation tube.

[0017] It can be understood that the first sealing ring is used to seal the assembly between the housing and the magnetic isolation tube, which can prevent water from leaking when flowing through the housing and into the magnetic isolation tube.

[0018] In one embodiment, along the axial direction of the magnetic isolation tube, the projection of the flow meter assembly towards the electromagnetic pump body is arranged inside the electromagnetic pump body.

[0019] It can be understood that through the above structural arrangement, the assembly of the flow meter assembly does not occupy the space required for the assembly of the electromagnetic pump body in the radial direction of the magnetic isolation tube.

[0020] In one embodiment, two convex tips are formed on the magnetic impeller, the two convex tips are arranged on the rotation center line of the magnetic impeller, and the magnetic impeller can be rotatably installed in the housing through the two convex tips.

[0021] In one embodiment, the housing includes a lower cover and an upper cover, and the upper cover is connected to the lower cover in a snap-fit manner;

[0022] Wherein, the lower cover is connected and communicated with the magnetic isolation tube, and the magnetic impeller and the Hall element are both installed on the lower cover.

[0023] It can be understood that through the above structural settings, the assembly connection between the upper cover and the lower cover can be facilitated, thereby facilitating the assembly of the flowmeter assembly.

[0024] In one embodiment, a second sealing ring is assembled between the lower cover and the upper cover, and the second sealing ring is deformed under pressure for assembling and sealing the lower cover and the upper cover.

[0025] It can be understood that the assembly between the upper cover and the lower cover is sealed with a second sealing ring, which can prevent water from leaking when passing between the upper cover and the lower cover.

[0026] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0027] The micro electromagnetic pump claimed in this application uses a flowmeter assembly to detect the water flow rate during the operation of the micro electromagnetic pump. This can not only achieve precise control of the water flow rate during the operation of the micro electromagnetic pump, but also detect whether there is water in the micro electromagnetic pump, and integrate a water shortage protection function. This can not only prevent the micro electromagnetic pump from being burned out due to long-term dry pumping, improve the safety of the micro electromagnetic pump, but also simplify the structure of the whole machine of the equipment applying the micro electromagnetic pump, and has the effect of reducing costs; In addition, due to the integration of the magnetic impeller, the volume of the magnetic impeller can be small, meeting the usage requirements for supporting the use of the micro electromagnetic pump. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a cross-sectional view of the micro electromagnetic pump provided by the present application.

[0030] Figure 2 It is a structural schematic diagram of the magnetic impeller in the present application.

[0031] Reference numerals: 100, micro electromagnetic pump; 10, electromagnetic pump body; 11, magnetic isolation tube; 20, flowmeter assembly; 21, magnetic impeller; 210, blade; 211, convex tip; 22, Hall element; 23, housing; 231, lower cover; 232, upper cover; 201, first sealing ring; 202, second sealing ring. Specific embodiments

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention 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 of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work fall within the protection scope of the present invention.

[0033] It should be noted that when an element is referred to as being "provided on" another element, it can be directly provided on the other element or there may also be an intermediate element. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there may be an intermediate element at the same time. When an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there may be an intermediate element at the same time.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0035] As Figure 1 shown, the micro electromagnetic pump 100 provided by the present application includes an electromagnetic pump body 10 and a flowmeter assembly 20. The flowmeter assembly 20 is installed on the electromagnetic pump body 10 and is connected to the electromagnetic pump body 10. Moreover, the externally placed water can be introduced into the electromagnetic pump body 10 through the flowmeter assembly 20. Among them, the flowmeter assembly 20 includes a magnetic impeller 21 and a Hall element 22. The magnetic impeller 21 is configured as an integral structure. Moreover, the magnetic impeller 21 can rotate under the push of the flowing water for the Hall element to sense and convert it into a pulse number for detecting the water flow rate. That is to say, when the micro electromagnetic pump 100 works, the cooperation between the Hall element 22 and the magnetic impeller 21 can be used to detect the water flow rate of the water introduced into the electromagnetic pump body 10. It should be noted that the specific structure of the electromagnetic pump body 10 and the working principle of how to pump and drain water during work can adopt the conventional methods of existing electromagnetic pumps and will not be elaborated here.

[0036] As can be seen from the above, when the micro electromagnetic pump 100 works, the flow meter assembly 20 can be used to detect the water flow rate during the operation of the micro electromagnetic pump 100. This not only enables precise control of the water flow rate during the operation of the micro electromagnetic pump 100, but also can detect whether there is water in the micro electromagnetic pump 100, and integrates a water shortage protection function. This not only prevents the micro electromagnetic pump 100 from being burned out due to long-term dry pumping, improves the safety of the micro electromagnetic pump 100, but also simplifies the structure of the entire device applying the micro electromagnetic pump 100, and has the effect of reducing costs. In addition, due to the integration of the magnetic impeller 21, the volume of the magnetic impeller 21 can be small, meeting the usage requirements for supporting the use of the micro electromagnetic pump 100. It should be noted that since the micro electromagnetic pump 100 integrates the water shortage protection function, the lack of a protection mechanism required for supporting the entire device applying the micro electromagnetic pump 100 can be saved, thus playing a role in simplifying the structure and reducing costs.

[0037] In this application, the material of the magnetic impeller 21 includes magnetic powder and plastic material; among them, the magnetic powder and the plastic material are mixed and integrally formed into the magnetic impeller 21. That is to say, the magnetic impeller 21 can be prepared by mixing magnetic powder into the plastic material to obtain an integrated magnetic impeller 21, which is convenient for the production and preparation of the magnetic impeller 21 and meets the usage requirement that the magnetic impeller 21 can be sensed by the Hall element 22 when rotating. Here, the magnetic impeller 21 can be prepared by integrally injection molding or extrusion molding of magnetic powder and plastic material.

[0038] As Figure 2 shown, the magnetic impeller 21 has four blades 210, and the four blades 210 are arranged at equal intervals along the rotation direction of the magnetic impeller 21. It can be understood that in other embodiments, the number of blades 210 of the magnetic impeller 21 can also be three, five, or even more.

[0039] As Figure 1 shown, the electromagnetic pump main body 10 includes a magnetic isolation tube 11; the flow meter assembly 20 further includes a housing 23, the housing 23 is connected and communicated with the magnetic isolation tube 11, and the magnetic impeller 21 is rotatably installed in the part of the housing 23 located outside the magnetic isolation tube 11, and the Hall element 22 is fixedly installed in the part of the housing 23 located outside the magnetic isolation tube 11. That is to say, the flow meter assembly is assembled as a separate module onto the magnetic isolation tube 11 of the electromagnetic pump main body 10, enabling the flow meter assembly 20 to be independently produced and prepared. This enables the micro electromagnetic pump 100 to be obtained by making minor improvements on the basis of the original micro electromagnetic pump, and is convenient for the production and preparation of the micro electromagnetic pump 100.

[0040] It should be noted that since the magnetic impeller 21 and the Hall element 22 are arranged outside the magnetic isolation tube 11, the space on the housing 23 for accommodating the magnetic impeller 21 can be increased to a certain extent, so that the size of the magnetic impeller 21 can be larger than the outer diameter of the magnetic isolation tube 11, which is convenient for the production and preparation of the magnetic impeller 21.

[0041] As shown in Figure 1 the figure, along the axial direction of the magnetic isolation tube 11, the projection of the flowmeter assembly 20 towards the electromagnetic pump main body 10 is arranged inside the electromagnetic pump main body 10, so that the assembly of the flowmeter assembly 20 does not occupy the space required for the assembly of the electromagnetic pump main body 10 in the radial direction of the magnetic isolation tube 11.

[0042] As shown in Figure 1 the figure, the housing 23 is assembled to the magnetic isolation tube 11 in a plug-in fit manner, which is convenient for the assembly of the housing 23 on the magnetic isolation tube 11 and the assembly between the flowmeter assembly 20 and the electromagnetic pump main body 10. Here, a part of the housing 23 is inserted into the magnetic isolation tube 11 to achieve the plug-in fit between the housing 23 and the magnetic isolation tube 11. Of course, in other embodiments, the housing can also be sleeved on the magnetic isolation tube, which will not be elaborated here.

[0043] Preferably, as shown in the figure, a first sealing ring 201 is assembled between the housing 23 and the magnetic isolation tube 11. The first sealing ring 201 is deformed under pressure to seal the assembly of the housing 23 and the magnetic isolation tube 11, so as to prevent water from leaking when flowing through the housing 23 and into the magnetic isolation tube 11.

[0044] As shown in Figure 1 the figure, the housing 23 includes a lower cover 231 and an upper cover 232. The upper cover 232 is connected to the lower cover 231 in a snap-fit manner, which is convenient for the assembly connection between the upper cover 232 and the lower cover 231, thus facilitating the assembly of the flowmeter assembly 20. Here, the lower cover 231 is connected and communicated with the magnetic isolation tube 11, and the magnetic impeller 21 and the Hall element 22 are both installed on the lower cover 231. Of course, in other embodiments, the upper cover 232 and the lower cover 231 can also be assembled and connected by means of threads, which will not be elaborated here.

[0045] Preferably, as shown in Figure 1 the figure, a second sealing ring 202 is assembled between the lower cover 231 and the upper cover 232. The second sealing ring 202 is deformed under pressure to seal the assembly of the lower cover 231 and the upper cover 232, so as to prevent water from leaking between the upper cover 232 and the lower cover 231.

[0046] As shown in Figure 2As shown, two convex tips 211 are formed on the magnetic impeller 21. The two convex tips 211 are disposed on the rotation center line of the magnetic impeller 21. Moreover, the magnetic impeller 21 can be rotatably mounted in the housing 23 through the two convex tips 211, thereby achieving the rotational assembly of the magnetic impeller 21 in the housing 23. Here, the convex tips 211 are integrally connected to the magnetic impeller 21. Specifically, the magnetic impeller 21 can be rotatably assembled into the lower cover 231 of the housing 23.

[0047] In summary, the micro electromagnetic pump 100 of the present application integrates the function of flow detection, enabling the micro electromagnetic pump 100 to accurately control the water flow during operation. At the same time, the micro electromagnetic pump 100 can also be provided with the function of detecting whether there is water.

[0048] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0049] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as it is within the scope of the spirit of the present invention, appropriate changes and variations made to the above embodiments fall within the scope of protection required by the present invention.

Claims

1. A micro electromagnetic pump, characterized in that: The micro electromagnetic pump (100) comprises an electromagnetic pump body (10) and a flow meter assembly (20), wherein the flow meter assembly (20) is mounted on the electromagnetic pump body (10) and communicates with the electromagnetic pump body (10), and external water can be introduced into the electromagnetic pump body (10) via the flow meter assembly (20); The flow meter assembly (20) includes a magnetic impeller (21) and a Hall element (22), wherein the magnetic impeller (21) is configured as an integrated structure, and the magnetic impeller (21) can rotate under the impetus of the flowing water, so as to be sensed by the Hall element (22) and converted into a pulse number for detecting the flow rate of the water; The material of the magnetic impeller (21) includes magnetic powder and plastic material; The magnetic powder is mixed with the plastic material and then integrally formed into the magnetic impeller (21).

2. The micro electromagnetic pump according to claim 1, characterized in that The magnetic impeller (21) has four blades (210), and the four blades (210) are arranged at equal intervals along the rotation direction of the magnetic impeller (21).

3. The micro electromagnetic pump according to claim 1, characterized in that The electromagnetic pump body (10) includes a magnetic isolation tube (11); The flow meter assembly (20) further includes a housing (23), the housing (23) being connected to and in communication with the magnetic isolation tube (11), the magnetic impeller (21) being rotatably mounted on a portion of the housing (23) located outside the magnetic isolation tube (11), and the Hall element (22) being fixedly mounted on a portion of the housing (23) located outside the magnetic isolation tube (11).

4. The micro electromagnetic pump according to claim 3, characterized in that: The shell (23) is assembled onto the magnetic isolation tube (11) in a plug-fitting manner.

5. The micro electromagnetic pump according to claim 4, characterized in that: A first sealing ring (201) is assembled between the shell (23) and the magnetic isolation tube (11). The first sealing ring (201) is deformed under pressure and is used to assemble and seal the shell (23) and the magnetic isolation tube (11).

6. The micro electromagnetic pump according to claim 3, characterized in that: Along the axial direction of the magnetic isolation tube (11), the projection of the flow meter assembly (20) toward the electromagnetic pump body (10) is arranged inside the electromagnetic pump body (10).

7. The micro electromagnetic pump according to claim 3, characterized in that: Two protrusions (211) are formed on the magnetic impeller (21), and the two protrusions (211) are arranged on the rotation center line of the magnetic impeller (21). Moreover, the magnetic impeller (21) can be rotatably installed in the housing (23) through the two protrusions (211).

8. The micro electromagnetic pump according to claim 3, characterized in that: The housing (23) comprises a lower cover (231) and an upper cover (232), wherein the upper cover (232) is connected to the lower cover (231) in a snap-fit manner; The lower cover (231) is connected to and communicates with the magnetic isolation tube (11), and the magnetic impeller (21) and the Hall element (22) are both mounted on the lower cover (231).

9. The micro electromagnetic pump according to claim 8, characterized in that: A second sealing ring (202) is assembled between the lower cover (231) and the upper cover (232). The second sealing ring (202) is deformed under pressure and is used to assemble and seal the lower cover (231) and the upper cover (232).

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