Electromagnetic pump
By using non-metal isolation parts in electromagnetic pumps to isolate the pump core and springs, the wear and pollution problems caused by pump core contact are solved, and the rust prevention and cleaning are improved, meeting food-grade requirements.
Patent Information
- Application Number
- CN202420931319.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The pump core spring in the existing electromagnetic pumps is in direct contact with the fixed pump core and movable pump core, causing vibration and friction, resulting in wear and rust of the anti-rust layer, contaminating the liquid passing through the pump, and unable to meet the food-grade requirements.
Non-metal isolation parts (such as plastic) are used to isolate the first and second springs between the fixed pump core and the movable pump core to avoid direct metal contact, prevent wear and rust, and through pre-compression and plug-in and clamping Ensure proper assembly and stability of the isolation parts.
It effectively prevents wear and rust of the fixed pump core, movable pump core and spring after long-term work of the electromagnetic pump, avoids liquid pollution, and ensures the cleanliness of the electromagnetic pump and food-grade requirements.
Smart Images
Figure CN222315305U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field related to flow control, and in particular to an electromagnetic pump. Background Art
[0002] Electromagnetic pumps have been widely used in various fields, such as coffee machines, cleaning machines and other small household appliances. When the electromagnetic pump is working, the movable pump core reciprocates relative to the fixed pump core under the joint action of the coil and the pump core spring, thereby realizing the delivery of liquid.
[0003] At present, in the existing electromagnetic pumps, the pump core spring is in direct contact with the fixed pump core and the movable pump core. When the electromagnetic pump is working, there will be vibration, friction and other factors at the contact parts between the pump core spring and the fixed pump core and the movable pump core. Since the fixed pump core, the movable pump core and the pump core spring are metal parts, after the electromagnetic pump has worked for a long time, the rust-proof layer of the contact parts of the fixed pump core and the movable pump core and the surface of the spring contact part will be worn, thereby causing the fixed pump core, the movable pump core and the pump core spring to rust, which will contaminate the liquid passing through the electromagnetic pump. For example, when the electromagnetic pump is used in a coffee machine, the rust caused by rust will enter the coffee, which cannot ensure that the electromagnetic pump meets food grade requirements. Utility Model Content
[0004] In view of this, it is necessary to provide an electromagnetic pump that can solve the above technical problems.
[0005] In order to solve the above technical problems, this application provides the following technical solutions:
[0006] An electromagnetic pump, the electromagnetic pump comprising:
[0007] A pump core assembly, comprising a fixed pump core, a movable pump core and a first spring, wherein the first spring is assembled between the fixed pump core and the movable pump core in a pre-compressed manner;
[0008] A first isolating member is mounted on the fixed pump core, and the fixed pump core can abut against the first spring through the first isolating member;
[0009] a second isolating member, mounted on the movable pump core, and the movable pump core can abut against the first spring through the second isolating member;
[0010] Wherein, the first isolating member and the second isolating member are both configured as non-metallic members.
[0011] It can be understood that the first spring is isolated from the fixed pump core and the movable pump core by using the non-metallic first isolation member and the second isolation member. This can prevent the rust-proof layer of the contact parts of the fixed pump core and the movable pump core and the surface of the contact part of the first spring from being worn due to vibration, friction and other factors after the electromagnetic pump has been working for a long time, thereby preventing the fixed pump core, the movable pump core and the first spring from rusting and preventing contamination of the liquid passing through the electromagnetic pump.
[0012] In one embodiment, the material of the first isolation member and / or the material of the second isolation member is set to be plastic.
[0013] It is understandable that setting the material of the first isolating member and / or the material of the second isolating member to plastic allows the first isolating member and / or the second isolating member to be integrally injection molded, thereby facilitating the production and preparation of the corresponding first isolating member and / or the corresponding second isolating member.
[0014] In one embodiment, the first isolating member is assembled to the fixed pump core in a plug-in manner.
[0015] It is understandable that the first isolating member is assembled to the fixed pump core in a plug-in manner, which can facilitate the assembly of the first isolating member on the fixed pump core and ensure the accuracy of the position of the first isolating member when assembled on the fixed pump core.
[0016] In one embodiment, the first isolating member has a first convex ring, which is disposed on the periphery of the first spring and abuts against the first spring, and is used to limit the portion of the first spring that is sleeved on the fixed pump core from contacting the fixed pump core.
[0017] It can be understood that by utilizing the abutment between the outer periphery of the first spring and the first convex ring on the first isolating member, the outer periphery of the first spring can be easily positioned on the first convex ring of the first isolating member, thereby preventing the portion of the first spring that is mounted on the fixed pump core from contacting the fixed pump core and causing wear to the fixed pump core.
[0018] In one embodiment, a guide opening is formed on the inner circumferential wall of the first convex ring, and the guide opening can guide the first spring to extend into the first convex ring.
[0019] It can be understood that the first spring is guided into the first convex ring by using the guide opening on the inner circumferential wall of the first convex ring, so that the first spring can be easily inserted into the first convex ring.
[0020] In one embodiment, the second isolation member is connected to the movable pump core in a snap-fit manner.
[0021] It can be understood that the second isolating member is assembled to the movable pump core in a snap-fit manner, which can facilitate the assembly of the second isolating member on the movable pump core.
[0022] In one embodiment, the second isolating member has a second convex ring, which is disposed on the inner side of the first spring and abuts against the first spring to limit the portion of the first spring that is sleeved on the movable pump core from contacting the movable pump core.
[0023] It can be understood that by utilizing the abutment between the first spring and the second convex ring of the second isolating member, the first spring can be easily positioned on the second convex ring of the second isolating member, preventing the portion of the first spring that is mounted on the movable pump core from contacting the movable pump core and causing wear to the movable pump core.
[0024] In one embodiment, an extended convex ring is formed on the movable pump core, and the movable pump core can be engaged with the second convex ring through the extended convex ring;
[0025] Along the pre-compression direction of the first spring, the length of the extended protruding ring is set to L, wherein 2.5 mm ≥ L ≥ 1.5 mm.
[0026] It is understandable that by using an extended convex ring with a length between 1.5mm and 2.5mm to engage with the second convex ring, the effective contact area between the second isolating member and the movable pump core can be increased, thereby improving the stability of the connection between the second isolating member and the movable pump core.
[0027] In one embodiment, the electromagnetic pump further comprises a pump core seat, a second spring and a third isolating member, wherein the pump core seat is arranged on a side of the movable pump core away from the fixed pump core and abuts against one end of the second spring, and the other end of the second spring abuts against the movable pump core through the third isolating member;
[0028] Wherein, the third isolation member is configured as a non-metallic member.
[0029] It can be understood that the second spring and the movable pump core are isolated by the third isolation member made of a non-metallic part, so that the rust-proof layer of the contact part of the movable pump core and the surface of the contact part of the second spring can be prevented from being worn due to vibration, friction and other factors after the electromagnetic pump has been working for a long time, thereby preventing the movable pump core and the second spring from rusting and contaminating the liquid passing through the electromagnetic pump; in addition, by arranging the second spring, and one end of the second spring abuts against the pump core seat, and the other end abuts against the movable pump core through the third isolation member, when the electromagnetic pump is working, it can prevent the movable pump core from shifting its stroke when it moves relative to the fixed pump core.
[0030] In one embodiment, the third isolating member has a third convex ring, which is arranged on the periphery of the second spring and abuts against the second spring, and is used to limit the portion of the second spring located in the area where the movable pump core is located from contacting the movable pump core.
[0031] It can be understood that by utilizing the abutment between the outer periphery of the second spring and the third convex ring on the third isolating member, the outer periphery of the second spring can be easily positioned on the third convex ring of the third isolating member, thereby preventing the portion of the second spring that is mounted in the area where the movable pump core is located from contacting the movable pump core and causing wear to the movable pump core.
[0032] Due to the application of the above solution, the present application has the following advantages compared with the prior art:
[0033] The electromagnetic pump for which protection is sought in the present application uses a non-metallic first isolating member and a second isolating member to isolate the first spring from the fixed pump core and the movable pump core. This can prevent the rust-proof layer of the contact parts of the fixed pump core and the movable pump core and the surface of the contact part of the first spring from being worn due to vibration, friction and the like after the electromagnetic pump has worked for a long time, thereby preventing the fixed pump core, the movable pump core and the first spring from rusting and preventing contamination of the liquid passing through the electromagnetic pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0035] Figure 1 A cross-sectional view of an electromagnetic pump provided in one embodiment of the present application;
[0036] Figure 2 for Figure 1 A magnified view of the P part;
[0037] Figure 3 for Figure 1 Enlarged view of the Q part;
[0038] Figure 4 for Figure 1 A partial exploded view of the .
[0039] Figure numerals: 100, electromagnetic pump; 10, pump core assembly; 11, fixed pump core; 12, movable pump core; 121, extended convex ring; 13, first spring; 20, first isolation member; 21, first convex ring; 211, inner wall; 2111, guide port; 30, second isolation member; 31, second convex ring; 40, pump core seat; 50, second spring; 60, third isolation member; 61, third convex ring. DETAILED DESCRIPTION
[0040] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0041] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0043] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0044] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.
[0045] The electromagnetic pump 100 for which protection is sought in this application is applied to a coffee machine (not shown).
[0046] like Figures 1 to 4 As shown, the electromagnetic pump 100 provided in one embodiment of the present application includes a pump core assembly 10, a first isolating member 20 and a second isolating member 30. The pump core assembly 10 includes a fixed pump core 11, a movable pump core 12 and a first spring 13. The first spring 13 is pre-compressed and assembled between the fixed pump core 11 and the movable pump core 12. The first isolating member 20 is mounted on the fixed pump core 11, and the fixed pump core 11 can abut against the first spring 13 through the first isolating member 20. The second isolating member 30 is mounted on the movable pump core 12, and the movable pump core 12 can abut against the first spring 13 through the second isolating member 30. The first isolating member 20 and the second isolating member 30 are both configured as non-metallic parts. In other words, the present application isolates the direct contact between metal parts by arranging the first isolating member 20 between the fixed pump core 11 and the first spring 13, and arranging the second isolating member 30 between the first spring 13 and the movable pump core 12.
[0047] It can be understood that the first spring 13 is isolated from the fixed pump core 11 and the movable pump core 12 by using the non-metallic first isolation member 20 and the second isolation member 30. This can prevent the rust-proof layer of the contact parts of the fixed pump core 11 and the movable pump core 12 and the surface of the contact parts of the first spring 13 from being worn due to vibration, friction and other factors after the electromagnetic pump 100 has been working for a long time, thereby preventing the fixed pump core 11, the movable pump core 12 and the first spring 13 from rusting, and preventing contamination of the liquid passing through the electromagnetic pump 100.
[0048] like Figure 2 As shown, in one embodiment, the first isolating member 20 is assembled to the fixed pump core in a plug-in manner. That is, the first isolating member 20 is assembled to the fixed pump core 11 in a plug-in manner, so that the first isolating member 20 can be assembled to the fixed pump core 11 more easily and the position accuracy of the first isolating member 20 when assembled to the fixed pump core 11 can be ensured.
[0049] like Figure 2 , Figure 4As shown, in one embodiment, the first isolating member 20 has a first convex ring 21, which is disposed on the periphery of the first spring 13 and abuts against the first spring 13, and is used to limit the portion of the first spring 13 that is sleeved on the fixed pump core 11 from contacting the fixed pump core 11. In other words, by utilizing the abutment between the periphery of the first spring 13 and the first convex ring 21 on the first isolating member 20, the periphery of the first spring 13 can be easily positioned on the first convex ring 21 of the first isolating member 20, preventing the portion of the first spring 13 that is sleeved on the fixed pump core 11 from contacting the fixed pump core 11, and not causing wear to the fixed pump core.
[0050] like Figure 2 , Figure 4 As shown, in one embodiment, a guide opening 2111 is provided on the inner circumferential wall 211 of the first convex ring 21, and the guide opening 2111 can guide the first spring 13 to extend into the first convex ring 21. In other words, the first spring 13 is guided to extend into the first convex ring 21 by using the guide opening 2111 on the inner circumferential wall 211 of the first convex ring 21, so that the first spring 13 can be easily inserted into the first convex ring 21.
[0051] like Figure 2 As shown, in one embodiment, the second isolating member 30 is connected to the movable pump core 12 in a snap-fit manner. That is, the second isolating member 30 is assembled to the movable pump core 12 in a snap-fit manner, so that the second isolating member 30 can be easily assembled to the movable pump core 12. It should be noted that the second isolating member 30 is not limited to being assembled to the movable pump core 12 in a snap-fit manner. For those skilled in the art, the second isolating member 30 can also be assembled to the movable pump core 12 by gluing, which will not be elaborated here.
[0052] like Figure 2 , Figure 4 As shown, in one embodiment, the second isolating member 30 has a second convex ring 31, which is disposed on the inner side of the first spring 13 and abuts against the first spring 13, and is used to limit the portion of the first spring 13 that is sleeved on the movable pump core 12 from contacting the movable pump core 12. In other words, by abutting the first spring 13 against the second convex ring 31 of the second isolating member 30, the first spring 13 can be easily positioned on the second convex ring 31 of the second isolating member 30, and the portion of the first spring 13 that is sleeved on the movable pump core 12 is prevented from contacting the movable pump core 12, and the movable pump core 12 will not be worn.
[0053] In this embodiment, an extended convex ring 121 is formed on the movable pump core 12, and the movable pump core 12 can be engaged with the second convex ring 31 through the extended convex ring 121; along the pre-compression direction of the first spring 13, the length of the extended convex ring 121 is set to L, wherein 2.5mm≥L≥1.5mm. In other words, the extended convex ring 121 with a length between 1.5mm and 2.5mm is engaged with the second convex ring 31, so that the effective contact area between the second isolation member 30 and the movable pump core 12 can be increased, thereby improving the stability of the second isolation member 30 when connected to the movable pump core 12.
[0054] In one embodiment, the material of the first isolating member 20 and / or the material of the second isolating member 30 is set to plastic. That is to say, the material of the first isolating member 20 and / or the material of the second isolating member 30 is set to plastic, so that the first isolating member 20 and / or the second isolating member 30 can be integrally injection molded, thereby facilitating the production and preparation of the corresponding first isolating member 20 and / or the corresponding second isolating member 30. Of course, for those skilled in the art, the material of the first isolating member 20 and / or the material of the second isolating member 30 can also be a rubber member, which will not be elaborated here.
[0055] like Figure 1 , Figure 3 As shown, in one embodiment, the electromagnetic pump 100 also includes a pump core seat 40, a second spring 50 and a third isolation member 60. The pump core seat 40 is arranged on the side of the movable pump core 12 away from the fixed pump core 11 and abuts against one end of the second spring 50, and the other end of the second spring 50 abuts against the movable pump core 12 through the third isolation member 60; wherein the third isolation member 60 is configured as a non-metallic member. It can be understood that the use of the third isolation member 60 of a non-metallic part to isolate the second spring 50 from the movable pump core 12 can prevent the rust-proof layer of the contact part of the movable pump core 12 and the surface of the contact part of the second spring 50 from being worn due to factors such as vibration and friction after the electromagnetic pump 100 has been working for a long time, thereby preventing the movable pump core 12 and the second spring 50 from rusting and preventing the liquid passing through the electromagnetic pump 100 from being contaminated; in addition, by providing the second spring 50, and one end of the second spring 50 abuts against the pump core seat 40, and the other end abuts against the movable pump core 12 through the third isolation member 60, when the electromagnetic pump 100 is working, it can prevent the movable pump core 12 from shifting when it moves relative to the fixed pump core 11. In this embodiment, the material of the third isolation member 60 is set to plastic. In other embodiments, the material of the third isolation member 60 can also be a rubber member, which will not be elaborated here.
[0056] like Figure 3 , Figure 4As shown, in one embodiment, the third isolating member 60 has a third convex ring 61, which is disposed on the periphery of the second spring 50 and abuts against the second spring 50, and is used to limit the portion of the second spring 50 located in the region where the movable pump core 12 is located from contacting the movable pump core 12. In other words, by utilizing the abutment between the periphery of the second spring 50 and the third convex ring 61 on the third isolating member 60, the periphery of the second spring 50 can be conveniently positioned on the third convex ring 61 of the third isolating member 60, and the portion of the second spring 50 sleeved in the region where the movable pump core 12 is located is prevented from contacting the movable pump core 12, and thus the movable pump core 12 will not be worn.
[0057] It should be noted that the specific structure and working principle of the electromagnetic pump 100 can adopt existing conventional methods, which will not be elaborated here.
[0058] In summary, the electromagnetic pump 100 of the present application uses a non-metallic first isolation member 20 and a second isolation member 30 to isolate the first spring 13 from the fixed pump core 11 and the movable pump core 12, and uses a non-metallic third isolation member 60 to isolate the second spring 50 from the movable pump core 12. This can prevent the rust-proof layer of the contact parts of the fixed pump core 11 and the movable pump core 12 and the surface of the contact parts of the first spring 13 from being worn due to vibration, friction and other factors after the electromagnetic pump 100 has been working for a long time, thereby preventing the fixed pump core 11, the movable pump core 12 and the first spring 13 from rusting, and preventing contamination of the liquid passing through the electromagnetic pump 100.
[0059] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0060] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.
Claims
1. An electromagnetic pump, characterized in that: The electromagnetic pump (100) comprises: A pump core assembly (10) comprises a fixed pump core (11), a movable pump core (12) and a first spring (13), wherein the first spring (13) is assembled between the fixed pump core (11) and the movable pump core (12) in a pre-compressed manner; A first isolating member (20) is mounted on the fixed pump core (11), and the fixed pump core (11) can abut against the first spring (13) through the first isolating member (20); A second isolation member (30) is mounted on the movable pump core (12), and the movable pump core (12) can abut against the first spring (13) through the second isolation member (30); Wherein, the first isolating member (20) and the second isolating member (30) are both configured as non-metallic members.
2. The electromagnetic pump according to claim 1, characterized in that: The material of the first isolating member (20) and / or the material of the second isolating member (30) is set to be plastic.
3. The electromagnetic pump according to claim 1, characterized in that: The first isolating member (20) is assembled onto the fixed pump core (11) in a plug-in fitting manner.
4. The electromagnetic pump according to claim 3, characterized in that: The first isolating member (20) has a first convex ring (21), which is arranged on the periphery of the first spring (13) and abuts against the first spring (13) to limit the contact between the portion of the first spring (13) that is sleeved on the fixed pump core (11) and the fixed pump core (11).
5. The electromagnetic pump according to claim 4, characterized in that: A guide opening (2111) is provided on the inner peripheral wall (211) of the first convex ring (21), and the guide opening (2111) can guide the first spring (13) to extend into the first convex ring (21).
6. The electromagnetic pump according to claim 1, characterized in that: The second isolation member (30) is connected to the movable pump core (12) in a snap-fit manner.
7. The electromagnetic pump according to claim 6, characterized in that: The second isolating member (30) has a second convex ring (31), which is arranged on the inner side of the first spring (13) and abuts against the first spring (13) to limit the contact between the portion of the first spring (13) that is sleeved on the movable pump core (12) and the movable pump core (12).
8. The electromagnetic pump according to claim 7, characterized in that: An extended convex ring (121) is formed on the movable pump core (12), and the movable pump core (12) can be engaged with the second convex ring (31) through the extended convex ring (121); along the pre-compression direction of the first spring (13), the length of the extended convex ring (121) is set to L, wherein 2.5 mm ≥ L ≥ 1.5 mm.
9. The electromagnetic pump according to claim 1, characterized in that: The electromagnetic pump (100) further comprises a pump core seat (40), a second spring (50) and a third isolating member (60); the pump core seat (40) is arranged on a side of the movable pump core (12) away from the fixed pump core (11) and abuts against one end of the second spring (50); the other end of the second spring (50) abuts against the movable pump core (12) via the third isolating member (60); Wherein, the third isolation member (60) is configured as a non-metallic member.
10. The electromagnetic pump according to claim 9, characterized in that: The third isolating member (60) has a third convex ring (61), which is arranged on the periphery of the second spring (50) and abuts against the second spring (50), and is used to limit the contact between the portion of the second spring (50) located in the area where the movable pump core (12) is located and the movable pump core (12).