Anti-blocking electromagnetic pump

Abstract

The present invention discloses an anti-blocking electromagnetic pump, comprising: a main body, which internally forms a working chamber and a liquid outlet chamber, and a liquid flow hole connecting the two, wherein the working chamber has a pump core and a pump core seat, and the pump core seat is provided with a liquid flow hole; a sealing body, at least a part of which is arranged on the rear end face of the pump core seat and surrounds the liquid flow hole; a first check body, which is provided with a mounting hole that penetrates to the front end face; a first spring, which is used to cause the first check body to reset, and the first check body and the sealing body jointly close the rear opening of the liquid flow hole; a check member, which at least partially passes through the liquid flow hole and extends into the mounting hole, and is used to push the first check body to move backward and expose the rear opening of the liquid flow hole when the pump core moves backward. Its technical solution can conveniently and reliably solve the problem of adhesion between the check body and the pump core seat and the problem of dirt blocking the liquid flow hole, and the overall structure is simple and reliable, and the production and maintenance costs are greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic pumps, and in particular to an anti-blocking electromagnetic pump. Background Art

[0002] Electromagnetic pump is a liquid pump that directly combines power and pump body. It mainly generates magnetic induction after the electromagnetic coil is energized, so that the active pump core generates electromagnetic vibration, forms a vacuum in the piston cavity, opens the one-way valve in the piston cavity, and the return spring drives the active core to make reciprocating periodic vibration to pump water. This type of electromagnetic pump has the characteristics of simple structure, light volume and beautiful appearance. It is widely used in various small household appliances such as electric irons, coffee machines, cleaning machines and other water supply devices.

[0003] In actual applications, since the water used by the electromagnetic pump inevitably contains some impurities, the water outlet of the electromagnetic pump is very likely to accumulate some impurities or scale, especially when the water outlet is relatively small, which may lead to blockage. At the same time, the check body of the electromagnetic pump is prone to adhesion to the pump core seat, which is difficult to push open by water pressure alone, leading to failure.

[0004] Refer to the Chinese patent "Anti-blocking electromagnetic pump" with publication number CN210531083U, which discloses an anti-blocking electromagnetic pump that can dredge the water outlet and prevent the check body of the electromagnetic pump from moving improperly. The electromagnetic pump includes a magnetizer, a coil and a coil plastic coating located on the outer periphery of the coil, a magnetic isolation tube, and a pump core seat. The magnetic isolation tube is connected to the pump core seat. The pump core seat includes a water outlet. The coil is connected to the magnetizer, and the magnetizer is connected to the magnetic isolation tube. A pump core, a pump core spring and an inner spring of the pump core are arranged in the magnetic isolation tube. A first check body connected to the inner spring of the pump core is arranged on the side of the water outlet of the pump core seat facing the pump core, and a second check body connected to the check body spring is arranged on the side of the water outlet of the pump core seat away from the pump core. The first check body includes a connecting part that is sleeved in the inner spring of the pump core, a columnar sealing part that is connected to the connecting part and slidingly sealed with the inner cavity of the pump core seat, and a protruding part that is arranged on the outer end face of the sealing part and matches the water outlet of the pump core seat. The length of the protruding part is the shortest distance between the outer end face of the sealing part and the second check body when the electromagnetic valve is in a static state.

[0005] Obviously, this patent can solve the above problems, but the non-return structure is relatively complex, which makes the production and maintenance costs higher. Summary of the invention

[0006] To achieve the above objectives, the technical solution adopted by the present invention is to first provide an anti-blocking electromagnetic pump that can conveniently and reliably solve the problem of adhesion between the check body assembly and the pump core seat and the problem of dirt clogging the liquid flow hole, so as to overcome the above technical defects.

[0007] The specific technical solutions are as follows:

[0008] An anti-blocking electromagnetic pump, comprising:

[0009] The main body has a working chamber and a liquid outlet chamber arranged front and back, and a liquid flow hole connecting the two. The working chamber has a pump core and a pump core seat arranged opposite to each other, and the pump core seat is provided with a liquid flow hole;

[0010] A sealing body is installed in the main body, and at least a part of the sealing body is arranged on the rear end surface of the pump core seat and surrounds the liquid flow hole;

[0011] A first check body is axially movable and accommodated in the liquid outlet cavity, and a mounting hole is provided on the first check body and penetrates to the front end surface;

[0012] A first spring is disposed in the liquid outlet cavity to cause the first check body to reset, and the first check body and the sealing body to seal the rear opening of the liquid flow hole together;

[0013] The check component has a front end that forms a valve with the pump core to allow water to flow in one direction from front to rear, and a rear end that abuts against the first check body. At least a portion of the check component passes through the liquid flow hole and extends into the mounting hole to push the first check body to move backward and expose the rear opening of the liquid flow hole when the pump core moves backward.

[0014] Preferably, the check member includes a second check body and a second spring sleeved on the outer periphery of the rear portion of the second check body, and at least a portion of the second spring extends into the mounting hole. When the pump core moves backward, the second check body and / or the second spring pushes the first check body backward.

[0015] Preferably, the outer periphery of the second check body further has a guide structure, and the outer edge of the guide structure is matched with the shape of the inner peripheral wall of the liquid flow hole.

[0016] Preferably, the guiding structure is at least one convex ridge formed on the outer periphery of the second check body, and the convex ridges are evenly arranged on the outer peripheral wall of the second check body in an annular direction.

[0017] Preferably, the main body includes a metal tube, a coil sleeved on the outer circumference of the metal tube, a coil plastic covering the outer circumference of the coil, a magnet disposed outside the coil plastic covering, a pump housing disposed at the rear side of the magnet, a pump core seat installed in the pump housing, and a water inlet magnetic tube disposed at the front side of the magnet;

[0018] A working chamber is formed in the metal tube, a liquid outlet chamber is formed in the pump casing at the rear side of the pump core seat, a liquid flow hole is formed in the pump core seat and connects the working chamber and the liquid outlet chamber, a liquid inlet connected to the working chamber is formed at the front end of the water inlet magnetic tube, and a liquid outlet connected to the liquid inlet chamber is formed at the rear end of the pump casing.

[0019] Preferably, a guide cavity with an open front side is formed in the pump core seat, and the outer diameter of the rear portion of the pump core is smaller than the outer diameter of the middle portion thereof and extends into the guide cavity and abuts against the front end of the second check body.

[0020] Preferably, the rear end lateral opening of the pump housing forms a liquid outlet.

[0021] The beneficial effects of the above technical solution are:

[0022] The anti-blocking electromagnetic pump includes a main body, a sealing body, a first check body, a first spring and a check member. It can conveniently and reliably solve the problem of adhesion between the check body and the pump core seat and the problem of dirt blocking the liquid flow hole that cannot be solved by water pressure alone. The overall structure is simple and reliable, and the production and maintenance costs are greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of the anti-blocking electromagnetic pump of the present invention;

[0024] Figure 2 It is an exploded view of the anti-blocking electromagnetic pump of the present invention;

[0025] Figure 3 It is a cross-sectional view of the anti-blocking electromagnetic pump of the present invention.

[0026] Figure 4 A three-dimensional diagram of a stop-turn body assembly in an anti-blocking electromagnetic pump of the present invention;

[0027] Figure 5 It is a cross-sectional view of the anti-blocking electromagnetic pump assembly of the present invention. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments are combined with the accompanying drawings to explain the present invention in detail. Figure 3 The direction from left to right shown in the middle paper is the direction from front to back in this embodiment.

[0029] See also Figures 1 to 5 As shown in, the anti-blocking electromagnetic pump provided in this embodiment includes:

[0030] The main body 1 has a working chamber and a liquid outlet chamber arranged front and back, and a liquid flow hole connecting the two. The working chamber has a pump core 2 and a pump core seat 3 arranged opposite to each other, and the pump core seat 3 is provided with the liquid flow hole;

[0031] A sealing body 14 is installed in the main body 1, and at least a part of the sealing body 14 is arranged on the rear end surface of the pump core seat 3 and surrounds the liquid flow hole;

[0032] The first check body 4 is axially movable and accommodated in the liquid outlet cavity, and a mounting hole penetrating to the front end surface is opened on the first check body 4;

[0033] The first spring 5 is disposed in the liquid outlet cavity to promote the first check body 4 to return to its original position, and the first check body 4 and the sealing body 14 jointly close the rear opening of the liquid flow hole;

[0034] The front end of the check member forms a valve with the pump core 2 to allow water to flow in one direction from front to rear, and the rear end abuts against the first check body 4. At least a portion of the check member passes through the liquid flow hole and extends into the mounting hole to push the first check body 4 to move backward and expose the rear opening of the liquid flow hole when the pump core 2 moves backward.

[0035] In a specific application, the pump core 2 moves back and forth in the working chamber, and pushes the second check body to move backward when moving backward, and the check member pushes the first check body 4 to move backward, while releasing the closed state of the rear opening of the liquid flow hole, and the action of the check member passing through the liquid flow hole forces the blockage in the working chamber and the liquid flow hole to be pushed to the liquid outlet chamber, so as to solve the adhesion problem between the first check body 4 and the pump core seat 3 and the problem of dirt blocking the liquid flow hole; while when the pump core 2 moves forward, the check member moves forward at the same time, and the first spring 5 in a compressed state pushes the first check body 4 forward, and the first check body 4 and the sealing body 14 jointly close the rear opening of the liquid flow hole, so that a vacuum is formed in the working chamber, thereby preparing for the next water pumping movement, and the above-mentioned first check body 4, first spring 5 and check member together constitute the check body assembly in this embodiment.

[0036] Based on the above technical solution, the anti-blocking electromagnetic pump includes a main body 1, a sealing body 14, a first check body 4, a first spring 5 and a check member, which can conveniently and reliably solve the adhesion problem between the check body and the pump core seat 3 and the problem of dirt clogging the liquid flow hole that cannot be solved by water pressure alone. The overall structure is simple and reliable, and the production and maintenance costs are greatly reduced.

[0037] In a preferred embodiment, specifically as Figure 4 and Figure 5 As shown in the figure, the check member includes a second check body 6, a second spring 7 sleeved on the outer periphery of the rear portion of the second check body 6, and at least a portion of the second spring 7 extends into the mounting hole. When the pump core 2 moves backward, the second check body 6 and / or the second spring 7 pushes the first check body 4 backward.

[0038] In specific applications, there are two situations. The first is that the rear end length of the second check body 6 is sufficient to abut against the inner bottom surface of the mounting hole, that is, it can push against the first check body 4 by itself, and the first check body 4 is pushed backward by the second check body 6. At this time, the second spring 7 mainly plays a guiding role for the second check body 6; the second is that the rear end length of the second check body 6 is insufficient to abut against the inner bottom surface of the mounting hole, and the thrust needs to be transmitted to the first check body 4 through the second spring 7 to jointly push the first check body 4 backward. At this time, the second spring 7 plays a guiding and force transmission role for the second check body 6. In addition, the situation between the above two also includes the situation where the second check body 6 pushes the first check body 4 and the second spring 7 synchronously transmits the thrust to the first check body 4. However, no matter what the situation is, when the pump core 2 moves forward, the second spring 7 can provide a resetting thrust for the second check body 6 to move forward.

[0039] As a further preferred embodiment, the outer periphery of the second check body 6 further has a guide structure 17, and the outer edge of the guide structure 17 is adapted to the shape of the inner peripheral wall of the liquid flow hole. Specifically, the maximum outer diameter of the guide structure 17 is not greater than the minimum inner diameter of the liquid flow hole. In this embodiment, the liquid flow hole is a circular hole, but it is not limited to this. Further, specifically as Figure 4 As shown in FIG. 1 , the guide structure 17 is at least one convex ridge formed on the outer periphery of the second check body 6 , and the convex ridges are evenly arranged on the outer peripheral wall of the second check body 6 in an annular direction.

[0040] In a specific application, the front end of the second check body 6 at least partially extends into the inner hole of the pump core 2 to close the rear opening of the inner hole of the pump core 2, and when the pump core 2 moves forward, it first moves forward with the pump core 2 under the action of negative pressure, and after moving a certain distance, it detaches backward under the action of the water pressure in the pump core 2, so that the liquid flow in the inner hole of the pump core 2 flows into the working chamber.

[0041] It is worth pointing out that if Figure 4 and Figure 5 As shown in , the second anti-return body 6 is rod-shaped as a whole, and the first anti-return body 4 is cylindrical as a whole. The overall shape is similar to the structure used in the prior art, so the detailed description is omitted here.

[0042] In a preferred embodiment, specifically as Figure 2 and Figure 3As shown in , the main body 1 includes a metal tube 8, a coil 9 sleeved on the outer periphery of the metal tube 8, a coil plastic wrap 10 wrapped around the outer periphery of the coil 9, a magnet 11 arranged outside the coil plastic wrap 10, a pump housing 15 arranged on the rear side of the magnet 11, a pump core seat 3 installed in the pump housing 15, and a water inlet magnetic tube 12 arranged on the front side of the magnet 11, and the metal tube 8 constitutes the working chamber, the pump housing 15 constitutes the liquid outlet chamber at the rear side of the pump core seat 3, the liquid flow hole is formed in the pump core seat 3 and connects the working chamber and the liquid outlet chamber, the front end of the water inlet magnetic tube 12 constitutes a liquid inlet connected to the working chamber, and the rear end of the pump housing 15 constitutes a liquid outlet connected to the liquid inlet chamber. Further, the rear end lateral opening of the pump housing 15 constitutes a liquid outlet.

[0043] As a further preferred embodiment, the rear end of the water inlet magnetic tube 12 extends into the working chamber and is arranged opposite to the front end of the pump core 2, and a third spring is arranged between the rear end of the water inlet magnetic tube 12 and the front end of the pump core 2 to assist in pushing the pump core 2 to move backward. It is worth pointing out that the alternating current generated by the coil 9 when it is electrically connected to an external power source causes the pump core 2 to reciprocate in the working chamber. Furthermore, a guide cavity with an open front side is formed in the pump core seat 3, and the outer diameter of the rear part of the pump core 2 is smaller than the outer diameter of the middle part and extends into the guide cavity and abuts against the front end of the second check body 6, which can guide the reciprocating movement of the pump core 2. Furthermore, the rear end surface of the sealing body 14 is concave to form a hemispherical groove, and the front end structure of the first check body 4 matches the shape of the hemispherical groove to play a guiding role.

[0044] In addition, in order to achieve the purpose of sealing inside the main body 1, sealing components are embedded or mounted at multiple positions such as between the pump core 2 and the pump core seat 3 and on the outer periphery of the water inlet magnetic tube 12, and coil 9 skeletons are respectively provided at the front and rear ends of the coil 9. A plug pin 16 electrically connected to the coil 9 is also provided outside the main body 1 for inputting power. These are all commonly used means in the art, so their detailed description is omitted here.

[0045] As a further preferred embodiment, a sealing sleeve is also provided around the outer circumference of the pump core seat 3, and the sealing sleeve is embedded in the pump housing 15, and the sealing body 14 is a part of the sealing sleeve. The sealing sleeve is used to replace the multiple sealing rings in the prior art to realize the sealing structure outside the pump core seat 3, which can effectively prevent air and water leakage, and has a better sealing effect, and is more convenient to assemble.

[0046] The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.

Claims

1. An anti-blocking electromagnetic pump, It is characterized in that include: The main body (1) has a working chamber and a liquid outlet chamber arranged front and back, and a liquid flow hole connecting the two. The working chamber has a pump core (2) and a pump core seat (3) arranged opposite to each other. The pump core seat (3) is provided with the liquid flow hole. A sealing body (14) is installed in the main body (1), and at least a portion of the sealing body (14) is arranged on the rear end surface of the pump core seat (3) and surrounds the liquid flow hole; A first check body (4) is axially movable and accommodated in the liquid outlet cavity, and a mounting hole is provided on the first check body (4) and penetrates to the front end surface; A first spring (5) is disposed in the liquid outlet cavity and is used to cause the first check body (4) to return to its original position, and the first check body (4) and the sealing body (14) jointly seal the rear opening of the liquid flow hole; a check member, the front end of which forms a valve with the pump core (2) to allow water to flow in one direction from front to rear, and the rear end of which abuts against the first check body (4), and at least a portion of the check member passes through the liquid flow hole and extends into the mounting hole, so as to push the first check body (4) to move backward and expose the rear opening of the liquid flow hole when the pump core (2) moves backward; The non-return component comprises a second non-return body (6) and a second spring (7) sleeved on the outer periphery of the rear portion of the second non-return body (6), and at least a portion of the second spring (7) extends into the mounting hole. When the pump core (2) moves backward, the second non-return body (6) and / or the second spring (7) push the first non-return body (4) backward.

2. The anti-blocking electromagnetic pump according to claim 1, It is characterized in that The outer periphery of the second check body (6) also has a guide structure (17), and the outer edge of the guide structure (17) is adapted to the shape of the inner peripheral wall of the liquid flow hole.

3. The anti-blocking electromagnetic pump according to claim 2, It is characterized in that The guide structure (17) is at least one convex ridge formed on the outer periphery of the second non-return body (6), and the convex ridge is evenly arranged on the outer peripheral wall of the second non-return body (6) in an annular direction.

4. The anti-blocking electromagnetic pump according to claim 1, It is characterized in that The main body (1) comprises a metal tube (8), a coil (9) sleeved on the outer circumference of the metal tube (8), a coil plastic (10) wrapped around the outer circumference of the coil (9), a magnet (11) arranged outside the coil plastic (10), a pump housing (15) arranged on the rear side of the magnet (11), a pump core seat (3) installed in the pump housing (15), and a water inlet magnetic tube (12) arranged on the front side of the magnet (11); The metal tube (8) forms the working chamber, the pump housing (15) forms the liquid outlet chamber at the rear side of the pump core seat (3), the liquid flow hole is formed in the pump core seat (3) and connects the working chamber and the liquid outlet chamber, the front end of the water inlet magnetic tube (12) forms a liquid inlet connected to the working chamber, and the rear end of the pump housing (15) forms a liquid outlet connected to the liquid inlet chamber.

5. The anti-blocking electromagnetic pump according to claim 1, It is characterized in that A guide cavity with an open front side is also formed in the pump core seat (3); the outer diameter of the rear portion of the pump core (2) is smaller than the outer diameter of the middle portion thereof and extends into the guide cavity and abuts against the front end of the second check body (6).

6. The anti-blocking electromagnetic pump according to claim 4, It is characterized in that The rear end lateral opening of the pump housing (15) forms the liquid outlet.

Images