Sealing structure of electromagnetic water pump

Abstract

The utility model discloses a sealing structure of an electromagnetic water pump, which comprises a pump body, a cavity is arranged in the pump body, a magnetic pushing unit controlled to move under the action of a magnetic field is arranged in the cavity, the magnetic pushing unit is arranged on one side of the cavity, a linkage unit is arranged on the other side of the cavity, and the magnetic pushing unit moves and pushes the linkage unit to move synchronously. The magnetic pushing unit and the linkage unit are separated through a sealing structure, and when the sealing structure is in a sealed state, negative pressure is formed in the cavity, and water is sucked into the cavity; and when the sealing structure is separated from sealing, the water is discharged from the cavity. The sealing plug is reasonable in structural design, the first cone is designed at the front end of the sealing plug, the second cone matched with the first cone is designed on the sealing ring, and the circular ring is arranged on the outer edge of the first cone, so that the circular ring is in abutting connection with the inner wall of the second cone during sealing, the sealing performance is improved, and the reliable sealing effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump technical field especially relates to a sealing structure of electromagnetic water pump. BACKGROUND

[0002] Water pump is the mechanical of conveying liquid or making liquid pressure, it transmits the mechanical energy of prime mover or other external energy to liquid, makes liquid energy increase, mainly used to convey liquid including water, oil, acid and alkali liquid, emulsion and suspension emulsion etc., present stage in order to improve efficiency produces electromagnetic water pump, the work of electromagnetic water pump mainly relies on the reciprocating motion of its internal movable core and reaches the purpose of water absorption and pumping, movable core is in the inside of pump body (specifically the inside of electromagnetic system), and its one end is limited to the central axis of product by gasket or diaphragm.

[0003] During the movement of the core, the sealing plug and the sealing ring inside the core are in a relative sealing state or a disengaged sealing state. When in the relative sealing state, negative pressure is generated inside the water pump, thereby absorbing water from the outside into the water pump, achieving the effect of water absorption. When in the disengaged sealing state, the internal and external air pressures are balanced, and the water in the water pump is discharged. Therefore, the sealing effect between the sealing plug and the sealing ring determines the generation of negative pressure inside the water pump. The sealing effect in some existing electromagnetic water pumps is poor, which causes the sealing plug and the sealing ring to be unable to be completely sealed, resulting in poor sealing and air leakage, thereby failing to generate negative pressure, affecting the absorption and discharge of water, and affecting the use effect of the electromagnetic water pump. SUMMARY

[0004] The utility model provides a sealing structure of electromagnetic water pump aiming at the present situation of prior art.

[0005] The utility model adopts the technical scheme that a sealing structure of electromagnetic water pump, including pump body, the inside of pump body is cavity, be equipped with the magnetic push unit of moving through the magnetic field effect control in the cavity, magnetic push unit is arranged in the one side of cavity, the other side of cavity is arranged with linkage unit, magnetic push unit moves and pushes linkage unit synchronous movement, magnetic push unit and linkage unit are apart through sealing structure, when sealing structure is in sealed state, the cavity is negative pressure and water is absorbed into the cavity, when sealing structure is disengaged sealing, water is discharged from the cavity.

[0006] Preferably, the linkage unit includes a sealing plug movably arranged in the cavity, the sealing structure includes a first cone arranged on the side of the sealing plug close to the magnetic push unit, a circular ring for improving the sealing effect is arranged on the outer wall of the first cone, and the sealing structure further includes a sealing ring, the side of the sealing ring close to the sealing plug is provided with a second cone matched with the first cone.

[0007] Preferably, the first cone is convex, the second cone is concave, the shape of the first cone matches the shape of the second cone, the first cone is arranged in the second cone in the sealed state, and the ring is in close contact with the inner wall of the second cone; the sealing plug and the magnetic pushing unit are arranged on both sides of the sealing ring.

[0008] Preferably, the magnetic pushing unit comprises an iron core controlled to move under the action of a magnetic field, a top rod is connected to one end of the iron core, a compression spring is sleeved on the other end of the iron core, the end of the compression spring is in close contact with the inner wall of the cavity, an inner sleeve is arranged on the side of the sealing ring away from the sealing plug, the inner sleeve is in close contact with the sealing ring, a through hole for the end of the top rod is arranged on the inner sleeve, and the inside of the second cone is communicated with the through hole.

[0009] Preferably, when the iron core drives the top rod to move towards the sealing plug, the end of the top rod is in close contact with the end of the first cone through the through hole, the top rod drives the sealing plug to move away from the sealing ring until the first cone and the second cone are separated from each other, the air pressure in the cavity is the same as the atmospheric pressure, and the water in the cavity is discharged through the through hole.

[0010] Preferably, the linkage unit further comprises a spring sleeved on the sealing plug, and the other end of the spring is in close contact with the inner wall of the cavity.

[0011] Preferably, the sealing plug protrudes towards the magnetic pushing unit and is provided with a conical frustum, the ring is arranged at the end of the conical frustum, the sealing ring is provided with a cylindrical structure matched with the conical frustum, a planar structure matched with the ring for sealing is formed on the surface of the cylindrical structure, and the inside of the cylindrical structure is communicated with the through hole.

[0012] Compared with the prior art, the utility model has the advantages that the first cone is arranged at the front end of the sealing plug, the second cone matched with the first cone is arranged on the sealing ring, and the ring is arranged at the outer edge of the first cone, so that the ring is in close contact with the inner wall of the second cone in the sealed state, the sealing performance is improved, and reliable sealing effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is the cross-sectional structure schematic view of embodiment 1 of the utility model;

[0014] Fig. 2 is the cross-sectional structure schematic view of the sealing structure of embodiment 1 of the utility model;

[0015] Fig. 3 is the cross-sectional structure schematic view of embodiment 2 of the utility model;

[0016] Fig. 4 is the cross-sectional structure schematic view of the sealing structure of embodiment 2 of the utility model.

[0017] Label: 1, pump body; 2, cavity; 3, sealing plug; 4, first cone; 5, circular ring; 6, sealing ring; 7, second cone; 8, core; 9, ejector rod; 10, compression spring; 11, inner sleeve; 12, through hole; 13, spring; 14, conical frustum; 15, cylindrical structure; 16, planar structure. DETAILED DESCRIPTION

[0018] In the following, a plurality of embodiments of the present application will be disclosed with reference to the drawings. For the purpose of clear illustration, a plurality of practical details will be described in the following description. However, it should be appreciated that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0019] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., in the embodiments of the present application are used only for explaining the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0020] In addition, in addition to being used to represent the orientation or positional relationship, the above-mentioned terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases, and those skilled in the art can understand the specific meaning of these terms in the present application according to the specific situation.

[0021] In addition, the terms "mounting", "setting", "provided with", "connecting", "connected", "sleeved" should be understood broadly. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication between two devices, elements or components. The connection mode involved in the present application is prior art and does not have any improvement, and belongs to the common knowledge of those skilled in the art. Those skilled in the art can understand the specific meaning of the above-mentioned terms in the present application according to the specific situation.

[0022] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model. Example 1

[0023] like Figs. 1-2 As shown, this utility model provides a sealing structure for an electromagnetic water pump, including a pump body 1, with a cavity 2 inside the pump body 1. The cavity 2 is equipped with a magnetic actuation unit that is controlled to move by a magnetic field. The magnetic actuation unit is arranged on one side of the cavity 2, and a linkage unit is arranged on the other side of the cavity 2. The magnetic actuation unit moves and drives the linkage unit to move synchronously. Specifically, the magnetic actuation unit and the linkage unit are separated by a sealing structure. When the sealing structure is in a sealed state, the cavity 2 is under negative pressure and water is drawn into the cavity 2. When the sealing structure is detached, water is discharged from the cavity 2.

[0024] The linkage unit includes a sealing plug 3 movably disposed within the cavity 2. The sealing structure includes a first cone 4 disposed on the side of the sealing plug 3 near the magnetic actuation unit. A ring 5 for improving the sealing effect is provided around the outer wall of the first cone 4. Specifically, the sealing structure also includes a sealing ring 6. A second cone 7 that cooperates with the first cone 4 is provided on the side of the sealing ring 6 near the sealing plug 3.

[0025] Both the sealing plug 3 and the ring 5 are injection molded from plastic, and the sealing ring 6 is made of soft rubber.

[0026] The first cone 4 is convex and the second cone 7 is concave. The shape of the first cone 4 matches the shape of the second cone 7. When in a sealed state, the first cone 4 is arranged inside the second cone 7, and the ring 5 is in close contact with the inner wall of the second cone 7. Specifically, the sealing plug 3 and the magnetic pushing unit are arranged on both sides of the sealing ring 6.

[0027] The magnetic pushing unit comprises an iron core 8 controlled to move under the action of a magnetic field, one end of the iron core 8 is clamped with a top rod 9, the other end of the iron core 8 is sleeved with a compression spring 10, and the end of the compression spring 10 is in abutting connection with the inner wall of the cavity 2; specifically, the side, away from the sealing plug 3, of the sealing ring 6 is provided with an inner sleeve 11 in abutting connection with the sealing ring 6, the inner sleeve 11 is provided with a through hole 12 for the end of the top rod 9 to pass through, and the inside of the second cone 7 is in communication with the through hole 12.

[0028] When the iron core 8 drives the top rod 9 to move towards the sealing plug 3, the end of the top rod 9 is in abutting connection with the end of the first cone 4 through the through hole 12, the top rod 9 drives the sealing plug 3 to move away from the sealing ring 6 until the first cone 4 and the second cone 7 are separated from each other, the air pressure in the cavity 2 is the same as the atmospheric pressure, and the water in the cavity 2 is discharged from the cavity 2 through the through hole 12.

[0029] The linkage unit further comprises a spring 13 sleeved on the sealing plug 3, and the other end of the spring 13 is in abutting connection with the inner wall of the cavity 2.

[0030] The working principle of the utility model is as follows: when the electromagnetic pump is powered on, the iron core 8 reciprocates left and right under the action of the electromagnetic field and the compression spring 10, when the iron core 8 moves right under the action of the magnetic field, i.e. moves away from the sealing plug 3, the iron core 8 compresses the compression spring 10, at this time, the sealing plug 3 and the sealing ring 6 are in a sealed state, i.e. the first cone 4 on the sealing plug 3 is arranged in the second cone 7 in the sealing ring 6, and the circular ring 5 around the outer edge of the first cone 4 is in abutting and close connection with the inner wall of the second cone 7, so that the sealing effect is very good, at the same time, since the shape of the first cone 4 protruding outward and the shape of the second cone 7 recessed inward are matched, the sealing effect is further improved; at this time, since the airflow cannot pass through the sealing structure from the magnetic pushing unit to the linkage unit, the cavity 2 generates negative pressure, and the water outside the pump body 1 close to the magnetic pushing unit is sucked into the cavity 2, so that the water absorption effect is achieved.

[0031] When the iron core 8 moves left under the action of the magnetic field, i.e. moves close to the sealing plug 3, the compression spring 10 resets, the iron core 8 drives the top rod 9 to move left synchronously, until the end of the top rod 9 passes through the through hole 12 and abuts against the end of the first cone 4, and continues to drive the first cone 4 and the sealing plug 3 to move left synchronously, until the first cone 4 leaves the second cone 7, the outer edge of the circular ring 5 and the inner wall of the second cone 7 are separated from each other, the spring 13 is compressed under the movement of the sealing plug 3, at this time, the airflow passes through the through hole 12 and flows into the whole cavity 2, the internal and external pressures are balanced, so that the water in the cavity 2 is discharged, and the water pumping effect is achieved.

[0032] The utility model discloses a advantage lies in: through the first cone 4 of design in the front end of sealing plug 3, design the second cone 7 of cooperation with the first cone 4 on the sealing ring 6, and set up the ring 5 of a circle to the outer edge of the first cone 4, make the ring 5 and the inner wall of second cone 7 abutment connection when sealing, improve the leakproofness, produce reliable sealing effect. Example 2

[0033] As Figs. 3-4 Different from example 1, in the embodiment, the sealing plug 3 is provided with a conical platform body 14 protruding towards the magnetic pushing unit, the ring 5 is arranged at the end of the conical platform body 14, the sealing ring 6 is provided with a cylindrical structure 15 matched with the conical platform body 14, the surface of the cylindrical structure 15 is formed with a flat structure 16 matched with the ring 5 for sealing, and the inside of the cylindrical structure 15 is communicated with the through hole 12. Specifically, the sealing plug 3 and the ring 5 are made of soft glue material, the sealing ring 6 is made by plastic injection molding, when the sealing plug 3 and the sealing ring 6 are in contact, the ring 5 on the sealing plug 3 is in close connection with the flat structure 16 on the sealing ring 6 by abutting, thereby producing reliable sealing effect. The other structures are the same as those in example 1.

[0034] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0035] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolt, rivet, welding and sticking in the prior art, which will not be described in detail here.

[0036] The above content is only the preferred embodiment of the utility model. For ordinary skilled in the art, according to the idea of the utility model, various modifications and changes can be made in the specific implementation mode and application range. The content of the specification should not be understood as the limitation of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the scope of claims of the utility model.

Claims

1. A sealing structure of an electromagnetic water pump comprising a pump body, a cavity being formed in the pump body, characterized in that: The cavity is provided with a magnetic push unit controlled to move by a magnetic field, the magnetic push unit is arranged on one side of the cavity, a linkage unit is arranged on the other side of the cavity, the magnetic push unit moves and pushes the linkage unit to move synchronously, the magnetic push unit and the linkage unit are separated by a sealing structure, when the sealing structure is in a sealing state, the cavity is in a negative pressure and water is sucked into the cavity; when the sealing structure is separated from the sealing state, water is discharged from the cavity; The linkage unit comprises a sealing plug movably arranged in the cavity, the sealing structure comprises a first cone arranged on the side of the sealing plug close to the magnetic push unit, a ring is arranged on the outer wall of the first cone for improving the sealing effect, and the sealing structure further comprises a sealing ring, the side of the sealing ring close to the sealing plug is provided with a second cone matched with the first cone.

2. The sealing structure of an electromagnetic water pump according to claim 1, characterized in that: The first cone is outward convex, the second cone is inward concave, the shape of the first cone matches the shape of the second cone, when in the sealing state, the first cone is arranged in the second cone, and the ring is closely connected with the inner wall of the second cone; the sealing plug and the magnetic push unit are arranged on both sides of the sealing ring.

3. The sealing structure of an electromagnetic water pump according to claim 1, characterized in that: The magnetic push unit comprises an iron core controlled to move under the action of a magnetic field, a top rod is connected to one end of the iron core, a compression spring is sleeved on the other end of the iron core, the end of the compression spring is connected with the inner wall of the cavity, an inner sleeve is arranged on the side of the sealing ring away from the sealing plug, the inner sleeve is connected with the sealing ring, a through hole is arranged on the inner sleeve for the top rod to pass through, and the inside of the second cone is communicated with the through hole.

4. The sealing structure of an electromagnetic water pump according to claim 3, wherein: When the iron core drives the top rod to move towards the sealing plug, the end of the top rod passes through the through hole and is connected with the end of the first cone, the top rod drives the sealing plug to move away from the sealing ring until the first cone and the second cone are separated from the sealing, the air pressure in the cavity is the same as the atmospheric pressure, and the water in the cavity is discharged through the through hole.

5. The sealing structure of an electromagnetic water pump according to claim 1, characterized by: The linkage unit further comprises a spring sleeved on the sealing plug, and the other end of the spring is connected with the inner wall of the cavity.

6. The sealing structure of an electromagnetic water pump according to claim 3, wherein: The sealing plug is provided with a conical table body protruding towards the magnetic push unit, the ring is arranged on the end of the conical table body, a cylindrical structure matched with the conical table body is arranged on the sealing ring, a plane structure matched with the ring for sealing is formed on the surface of the cylindrical structure, and the inside of the cylindrical structure is communicated with the through hole.

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