Electromagnetic pump with anti-adhesion device and control method thereof

Abstract

The invention relates to an electromagnetic pump with an anti-adhesion device and a control method of the electromagnetic pump. The electromagnetic pump comprises a pipe body, an iron core, a rubber head, a sealing structure and a plurality of magnet yoke rings. A sealing cavity is formed among the pipe body, the iron core, the sealing structure and the rubber head; an elastic piece is arranged in the tube body; a conical groove is formed in the side, facing the ejector rod, of the iron core. The magnetic yoke ring is provided with a coil and is used for outputting electromagnetic force and sensing the position of the iron core; the induction current is used for judging whether the rubber head is ejected; the pipe body comprises a water outlet pipe which is provided with a conical structure for guiding. The magnetic yoke ring is provided with the coil, electromagnetic force can be output, the position of the iron core can also be sensed, and when the iron core is located at different positions, the induction currents of the coil are different so as to judge whether the rubber head is ejected open or not and whether the pump works normally or not. After the pump is placed for a long time, the power supply is set to be 40 Hz or lower than 40 Hz, the iron core is driven to move, the movement stroke of the iron core is increased, and the force for pushing away the rubber head is increased. A conical structure is arranged in the water outlet pipe and can guide the ejector rod.

Description

Technical Field

[0001] This invention relates to the field of pump technology, and more specifically, to an electromagnetic pump with an anti-sticking device and a control method thereof. Background Technology

[0002] Currently, in the early stages of operation or testing, fluid flows through tightly fitted components made of different materials. However, after prolonged periods of inactivity or storage, these components are prone to adhesion. This phenomenon is prevalent across various industries and fields. When the product resumes normal operation, additional force is required to break the adhesion. Many product failures are due to insufficient force to break this adhesion. Furthermore, even if a product is equipped with a release device, it is impossible to determine whether the adhesion has been effectively broken or whether the product is functioning correctly. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the existing technology lacks sufficient force to release adhesion and cannot determine whether the one-way valve is effectively opened by the push rod. In view of the above-mentioned defects of the existing technology, an electromagnetic pump with an anti-adhesion device and its control method are provided.

[0004] The technical solution adopted by this invention to solve its technical problem is: An electromagnetic pump with an anti-adhesion device is constructed, comprising: a frame; a tube body disposed within the frame, and equipped with an iron core, a rubber head, and a sealing structure; multiple magnetic yoke rings, each disposed on the tube body, with at least one yoke ring sleeved on the outside of the iron core; a push rod disposed on the side of the iron core facing the rubber head, the push rod moving away from or pushing the rubber head; a sealing cavity formed between the tube body, the iron core, the sealing structure, and the rubber head; and an elastic element disposed within the tube body. The iron core is located on the side away from the top rod; a conical groove is provided on the side of the iron core facing the top rod, and the top rod is located in the conical groove and moves within the conical groove to adjust the pressure of the sealing cavity; the magnetic yoke is provided with a coil, which is used to output electromagnetic force and sense the position of the iron core; when the iron core is in different positions, the induced current of the coil is different, and the induced current is used to determine whether the rubber head is pushed open; the pipe body includes a water outlet pipe, and the water outlet pipe is provided with a conical structure for guidance.

[0005] Furthermore, this includes an energized state and a de-energized state; when in the energized state, the iron core squeezes the elastic element and moves away from the rubber head, while the push rod moves away from the conical groove to balance the pressure; when switching from the energized state to the de-energized state, the elastic element resets, causing the iron core to move towards the rubber head, the push rod pushes open the rubber head, a pressure difference is formed in the sealed cavity, and the liquid is pumped out; when the pump is idle for a long time, a power supply of 40Hz or lower is applied to restart it, driving the iron core to move, and the stroke of the iron core increases.

[0006] Furthermore, the hardness of the push rod is greater than the hardness of the rubber head.

[0007] Furthermore, the stroke of the push rod is 0.1-1.0 mm.

[0008] Furthermore, the water outlet pipe is provided with a water outlet, and a rigid connector is movably provided with the water outlet; the rigid connector extends from the water outlet to the rubber head; when the push rod hits the rubber head, it pushes the rigid connector to move, and determines whether the rubber head has been effectively hit by visually inspecting the rigid connector or by a preset sensor.

[0009] Furthermore, the water outlet pipe is provided with a sealing groove, and the rubber head is located in the sealing groove and is in contact with or away from the bottom of the sealing groove; the end of the rubber head facing the push rod is arc-shaped, and the sealing groove is arc-shaped; when the push rod pushes the rubber head open, the rubber head disengages from the sealing groove; when the push rod returns to its original position, the rubber head returns to the sealing groove.

[0010] Furthermore, the plurality of magnetic yoke rings are distributed axially at equal intervals along the iron core, and isolation pads are provided between adjacent magnetic yoke rings; the movement stroke of the iron core can be adjusted by adjusting the spacing and number of magnetic yoke rings.

[0011] Furthermore, a first conical buffer is provided between the conical structure and the top rod; the top rod is provided with a limiting surface, one end of the first buffer abuts against the limiting surface, and the other end abuts against the conical structure; a fixing part is provided near the water outlet of the water pipe, and the fixing part is cross-shaped; a second buffer for buffering is provided between the fixing part and the rubber head.

[0012] Furthermore, the pipe body includes an inner pipe, and the sealing structure includes multiple sealing elements, which are respectively disposed between the water outlet pipe and the inner pipe; the sealing elements are arranged in a ring or are evenly distributed at multiple points.

[0013] Furthermore, the electromagnetic force generated by the coil after it is energized is greater than the adhesive force of the iron core in the inner tube.

[0014] Furthermore, the outer surface of the rubber head is provided with a conformal coating to prevent the rubber head from absorbing water, swelling, and getting stuck in the sealing groove.

[0015] This application provides a control method for an electromagnetic pump with an anti-adhesion device, comprising the following steps: Determine if the electromagnetic pump has not been used for a long time; If so, switch the water supply program to chopper mode and extend the working time; The induced current in the receiving coil; The induced current is used to determine whether the iron core is in the preset top-opening position; If not, apply a power supply of 40Hz or lower to increase the travel of the iron core.

[0016] This application provides a testing method for an electromagnetic pump with an anti-adhesion device, comprising the following steps: Determine if the pump is pumping water normally; If so, determine whether the push rod effectively impacts the rubber head by visually inspecting the preset rigid connector or by using a sensor to sense the rigid connector. When the rigid connector moves or the sensor detects the rigid connector, it is determined that the push rod effectively impacts the rubber head.

[0017] The beneficial effects of this invention are as follows: (1) The magnetic yoke of the present invention is equipped with a coil, which can not only output electromagnetic force, but also sense the position of the iron core. When the iron core is in different positions, the induced current of the coil is different, so as to determine whether the rubber head is opened and whether the pump is working normally. In addition, after the pump has been idle for a long time, a power supply of 40Hz or lower is applied to drive the iron core to move, thereby increasing the movement stroke of the iron core and increasing the force to push open the rubber head. These two control actions further ensure that the pump can work normally. When the electromagnetic pump is malfunctioning, the operation of the electromagnetic pump is stopped to avoid the electromagnetic pump from continuing to operate when it is malfunctioning, which would damage the electromagnetic pump.

[0018] (2) The present invention provides a conical structure inside the water outlet pipe, which can guide the push rod so that the push rod can slide to the rubber head position when it deviates, thus preventing the push rod from malfunctioning.

[0019] (3) By judging the state of the electromagnetic pump, the present invention switches the water supply program to chopper when the electromagnetic pump has not been running for a long time, and extends the working time, so that the force when the push rod opens the rubber head increases, and the rubber head is easier to reset. Attached Figure Description

[0020] Figure 1This is a front view schematic diagram of an electromagnetic pump with an anti-adhesion device according to an embodiment of the present invention; Figure 2 This is the present invention. Figure 1 Schematic diagram of the cross section at point AA; Figure 3 This is the present invention. Figure 2 A magnified view of a portion of point I in the middle; Figure 4 This is a three-dimensional structural diagram of the iron core in one embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the top rod in one embodiment of the present invention; Figure 6 This is a three-dimensional schematic diagram of the isolation pad located on the tube body in one embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the rubber head in one embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the water outlet pipe in one embodiment of the present invention; Figure 9 This is a schematic diagram of a sealing structure in one embodiment of the present invention; Figure 10 This is a flowchart of the method steps of a control method for an electromagnetic pump with an anti-adhesion device according to an embodiment of the present invention; Figure 11 This is a flowchart of the steps of a test method for an electromagnetic pump with an anti-adhesion device according to an embodiment of the present invention.

[0021] Labeling Explanation: Frame 1, Tube 2, Iron Core 3, Rubber Head 4, Sealing Structure 5, Magnetic Yoke Ring 6, Top Rod 7, Sealing Cavity 8, Elastic Component 201, Conical Groove 301, Coil 601, Water Outlet Pipe 202, Conical Structure 203, Water Outlet 204, Rigid Connector 205, Sensing Component 206, Sealing Groove 207, Isolation Gasket 602, First Buffer Component 208, Limiting Surface 701, Fixing Part 209, Second Buffer Component 210, Inner Tube 211, Sealing Component 501. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] When a product is not used for an extended period, components made of different materials can easily stick together, leading to product failure. When the product is brought back to normal operation, additional force is required to remove the adhesion. Even existing products with removal mechanisms cannot guarantee that the adhesion has been effectively removed or that the product is functioning correctly.

[0024] Please refer to Figures 1-4 This invention proposes an electromagnetic pump with an anti-adhesion device, comprising: a frame 1; a pipe 2 disposed within the frame 1, and equipped with an iron core 3, a rubber head 4, and a sealing structure 5; multiple magnetic yokes 6, each disposed on the pipe 2, with at least one yoke 6 sleeved on the outside of the iron core 3; a push rod 7 disposed on the side of the iron core 3 facing the rubber head 4, the push rod 7 moving away from or pushing the rubber head 4; a sealing cavity 8 formed between the pipe 2, the iron core 3, the sealing structure 5, and the rubber head 4; and an elastic element 201 disposed within the pipe 2, located on the iron core 3. The core 3 is located away from the push rod 7 on one side; the core 3 is provided with a conical groove 301 on the side facing the push rod 7, the push rod 7 is located in the conical groove 301 and moves within the conical groove 301 to adjust the pressure of the sealing cavity 8; the magnetic yoke ring 6 is provided with a coil 601, which is used to output electromagnetic force and sense the position of the core 3; when the core 3 is in different positions, the induced current of the coil 601 is different, and the induced current is used to determine whether the rubber head 4 is opened; the pipe body 2 includes a water outlet pipe 202, which is provided with a conical structure 203 for guidance.

[0025] In this embodiment, such as Figure 2 As shown, the pipe body 2 is installed inside the frame 1 of the electromagnetic pump, and an iron core 3 is provided inside the pipe body 2, which can move within the pipe body 2. A rubber head 4 is also provided inside the pipe body 2, located at the water outlet of the pipe body 2, and functions as a one-way valve. The one-way valve is opened and closed by opening or closing the rubber head 4. In a specific embodiment, the rubber head 4 is made of elastically deformable rubber, which can form a buffer after contacting the push rod 7, improving its service life. Furthermore, a sealing structure 5 is provided inside the pipe body 2 to seal the pipe body 2. A sealed cavity 8 is formed between the pipe body 2, the iron core 3, the sealing structure 5, and the rubber head 4, allowing a pressure difference to be created within the pipe body 2.

[0026] The tube body 2 is provided with multiple magnetic yoke rings 6; in a specific embodiment, the magnetic yoke rings 6 can be arranged as follows: Figure 2 As shown, two magnetic yokes are provided and fitted onto the outside of the tube body 2. In another specific embodiment, the magnetic yoke 6 can be embedded in the tube body 2. At least one magnetic yoke 6 is located on the outside of the iron core 3, and can generate a magnetic field after being energized, causing the iron core 3 to move within the tube body 2 under the action of the magnetic field.

[0027] Furthermore, a push rod 7 is provided on the side of the iron core 3 facing the rubber head 4. Under the action of the magnetic field, the iron core 3 moves horizontally in the tube 2. During this period, the push rod 7 can be opened and move in the conical groove 301 to balance the pressure, and can push the rubber head 4 open under the drive of the iron core 3.

[0028] More specifically, the iron core 3 can be made of stainless steel. During production, the outer surfaces of the iron core 3, the rubber head 4, and the inner surface of the water outlet pipe 202 are ground or polished to give them a high degree of surface smoothness and further prevent adhesion.

[0029] It is worth mentioning that the opening device is not limited to the top rod 7 structure proposed in this embodiment, but can also be other opening structures.

[0030] Furthermore, when the rubber head 4 is misaligned, the rubber head 4 is straightened by pushing the rubber head 4 with the push rod 7.

[0031] Furthermore, such as Figure 2 As shown, a sealed cavity, defined as sealing cavity 8, is formed between the tube body 2, the iron core 3, the sealing structure 5, and the rubber head 4. An elastic element 201 is also provided inside the tube body 2, located on the side of the iron core 3 away from the push rod 7. In a specific embodiment, the elastic element 201 is a spring, exhibiting elastic deformation and capable of releasing and resetting after accumulating elastic potential energy.

[0032] In one embodiment, the iron core 3 has strong magnetic permeability and can generate magnetic induction intensity in the energized coil 601. The frame 1 is made of a magnetically permeable material, such as an iron alloy. Specifically, when the electromagnetic pump is working normally, the solenoid coil 601 generates a magnetic field when energized. The external magnetic field is guided by the frame 1, while the magnetic yoke 6 guides the internal magnetic field. The magnetic field and the frame 1 work together to form a closed loop. Then, the magnetic field is conducted to the iron core 3, which moves under the influence of the magnetic force and squeezes the elastic element 201. The elastic element 201 accumulates elastic potential energy. At this time, the volume of the sealing cavity 8 increases and the pressure decreases. The push rod 7 is passively opened under the influence of the pressure to balance the pressure in the sealing cavity 8.

[0033] More specifically, since the electricity used is alternating current, half a cycle of electricity will remain after passing through the diode of the electromagnetic pump. At this time, the electromagnetic pump will change from an energized state to an unenergized state, and the elastic element 201 will release its elastic potential energy to reset, pushing the iron core 3 in the opposite direction. At the same time, the volume of the sealed cavity 8 gradually decreases and the pressure gradually increases. The push rod 7 located on one side of the iron core 3 will push open the glued head 4, so that the electromagnetic pump can resume operation and reciprocate to pump the liquid.

[0034] Specifically, the magnetic yoke 6 is equipped with a coil 601, which can output electromagnetic force and sense the position of the iron core 3. When the iron core 3 moves and is in different positions, the induced current in the coil 601 is different. By sensing the position of the iron core 3, it can be determined whether the rubber head 4 has been pushed open. This determines whether the electromagnetic pump is working properly. When the iron core 3 reaches a position that pushes open the rubber head 4, the operation stops to avoid damage to the electromagnetic pump.

[0035] like Figure 2As shown, the pipe body 2 can be divided into two parts: an outlet pipe 202 and an inner pipe 211. The outlet pipe 202 is installed on one side of the inner pipe 211 and is used to pump out the liquid. A rubber nozzle 4 is provided inside the outlet pipe 202, which acts as a one-way valve. In the direction of the push rod, the outlet pipe 202 has a tapered structure 203 as a guide to prevent the push rod from malfunctioning. Figure 3 As shown, the water outlet pipe 202 is equipped with a conical structure 203, which can slide to the position of the rubber head 4 and push out the rubber head 4 when the push rod 7 is offset.

[0036] like Figure 2 and Figure 4 As shown, the iron core 3 has a tapered groove 301 on the side facing the push rod 7. The push rod 7 is located in the tapered groove 301 and can move within the tapered groove 301 to adjust the pressure in the sealing cavity 8. Specifically, after the iron core 3 is compressed and moved by the electromagnetic force, the volume of the sealing cavity 8 increases and the pressure decreases. At this time, the push rod 7 will move away from the tapered groove 301 to balance the pressure.

[0037] Furthermore, at least one guide groove may be provided within the conical groove 301. Specifically, the push rod 7 moves along the guide groove, which serves to limit and guide the push rod 7, ensuring that the push rod 7 always moves linearly along the central axis, preventing deviation or jamming, and extending the service life of the push rod 7 and the rubber head 4. In one specific embodiment, two guide grooves are provided, symmetrically arranged along the central axis of the iron core 3. When the push rod 7 moves horizontally, it always moves within the guide groove, ensuring the coaxiality and stability of the push rod 7, improving the stability of frequent start-stop operations of the electromagnetic pump, avoiding deviation and jamming, and ensuring the positioning accuracy of the rubber head 4 during movement, thus improving sealing reliability.

[0038] It is worth mentioning that the number of guide grooves can also be set to four, and they are axially arranged with the iron core 3 to further improve the stability of the push rod 7.

[0039] In one embodiment, there are energized and de-energized states. When energized, the iron core 3 compresses the elastic element 201 and moves away from the rubber head 4. The push rod 7 moves away from the conical groove 301 in the guide groove to balance the pressure. When the energized state is switched to the de-energized state, the elastic element 201 resets and drives the iron core 3 to move towards the rubber head 4. The push rod 7 pushes open the rubber head 4, forming a pressure difference in the sealed cavity 8 and pumping out the liquid. When the pump is idle for a long time, a power supply of 40Hz or lower is applied to start working again and drive the iron core 3 to move, and the stroke of the iron core 3 increases.

[0040] Specifically, when the electromagnetic pump is powered by AC, coil 601 is energized and in an energized state. At this time, the iron core 3 will move to the left under the influence of the magnetic field, squeezing the elastic element 201. As the pressure in the sealing cavity 8 decreases, the push rod 7 will be passively opened and will move along the guide groove away from the conical groove 301 to balance the pressure in the sealing cavity 8. Then, the electromagnetic pump will switch from an energized state to a de-energized state. At this time, the elastic element 201 will reset due to the loss of magnetic field force. After resetting, it will push the iron core 3 towards the rubber head 4. At this time, a pressure difference will be formed in the sealing cavity 8, and the liquid will be pumped out. This reciprocating operation realizes the pumping function.

[0041] More specifically, with normal mains power at 50 / 60Hz, the elastic element 201 will not be compressed to its maximum. After the electromagnetic pump is idle, the rubber head sticking is quite severe, requiring additional force to push it open. Therefore, upon initial restart, a power supply of 40Hz or lower is required to drive the iron core 3, further increasing its stroke and increasing the force to push away the sticking, thus ensuring the pump's normal operation.

[0042] In one embodiment, the hardness of the push rod 7 is greater than the hardness of the rubber head 4.

[0043] In practice: the material of the push rod 7 is harder than that of the rubber head 4, ensuring that the push rod 7 can push the rubber head 4 open.

[0044] In one embodiment, the stroke of the push rod 7 is 0.1-1.0 mm.

[0045] Preferably, the travel stroke of the push rod 7 is 0.1-1.0mm, which can adapt to the usage requirements of different pumps.

[0046] In one embodiment, such as Figure 2 As shown, the water outlet pipe 202 is provided with a water outlet 204, and a rigid connector 205 is movably provided on the water outlet 204; the rigid connector 205 extends from the water outlet 204 to the rubber head 4; when the push rod 7 hits the rubber head 4, it pushes the rigid connector 205 to move, and determines whether the rubber head 4 has been effectively hit by visually inspecting the rigid connector 205 or by using a preset sensor 206.

[0047] In practical implementation: the rigid connector 205 can be a strip made of rigid material, such as a rigid polymer. In actual use, it is necessary to quickly check whether the push rod 7 effectively opens the rubber head 4. Specifically, firstly, it is necessary to ensure the pump's pumping function is operating normally, and secondly, to check whether the push rod 7 impacts the non-working rubber head 4. By extending the specially designed rigid connector 205 from the outlet 204 into the rubber head 4, when the push rod 7 first rapidly impacts the rubber head 4, the rigid connector 205 is quickly pushed out. Whether the rubber head 4 has been effectively impacted can be determined visually or by the sensor 206. In one specific embodiment, the sensor 206 can be a force sensor, a displacement sensor, or a high-speed video recorder, etc.

[0048] It is worth mentioning that the rigid connector 205 can also be other shapes, such as a hollow piston rod or other shapes. The position of the sensor 206 in the figure is not fixed, and it can also be set inside the water outlet pipe 202 or in other locations, as long as it is convenient for sensing and detection.

[0049] like Figure 2 and Figure 3 As shown, a sealing groove 207 is provided inside the water outlet pipe 202. The rubber head 4 is located inside the sealing groove 207 and is in contact with or away from the bottom of the sealing groove 207. The end of the rubber head 4 facing the push rod 7 is arc-shaped, and the sealing groove 207 is arc-shaped. When the push rod 7 pushes the rubber head 4 open, the rubber head 4 is disengaged from the sealing groove 207. When the push rod 7 is reset, the rubber head 4 is reset back into the sealing groove 207.

[0050] In practical implementation: a sealing groove 207 is provided inside the water outlet pipe 202, and it is arc-shaped. The rubber head 4 is set in the arc-shaped sealing groove 207 and fits against the groove surface of the sealing groove 207 for better sealing. When the push rod 7 pushes the rubber head 4 open, the rubber head 4 disengages from the sealing groove 207; when the push rod 7 returns to its original position, the rubber head 4 returns to the sealing groove 207, thereby achieving the effect of pumping water.

[0051] Furthermore, the rubber head 4, acting as a one-way valve, is prone to displacement during operation, leading to improper reset and affecting the internal sealing and pumping capacity of the electromagnetic pump. The push rod 7 of this application, under the action of the iron core 3, can quickly push and open the rubber head 4, causing the one-way valve to open or close. The rubber head 4 of this application is arc-shaped, with a gradually decreasing cross-sectional area from the front end to the rear end, resembling a trumpet. The sealing groove 207 is also correspondingly arranged in a trumpet shape, with the groove size gradually decreasing from left to right. The arc-shaped front end of the rubber head 4 and the arc-shaped sealing groove 207 serve a guiding function, allowing the rubber head 4 to automatically align within the water outlet pipe 202 and reset to its normal position.

[0052] Please refer to Figure 2 and Figure 6Multiple magnetic yoke rings 6 are distributed axially at equal intervals along the iron core 3, and isolation pads 602 are provided between adjacent magnetic yoke rings 6; the movement stroke of the iron core 3 can be adjusted by adjusting the spacing and number of magnetic yoke rings 6.

[0053] In practical implementation: the magnetic yoke rings 6 and the isolation pads 602 are arranged alternately. The isolation pads 602 are made of non-magnetic material. The magnetic yoke rings 6 are evenly distributed along the axial direction of the iron core 3, which can improve the uniformity of the magnetic field distribution and avoid the formation of eddy currents in the magnetic field superposition area. Furthermore, by adjusting the spacing and number of magnetic yoke rings 6, the iron core 3 and its movement stroke can be adjusted.

[0054] In one embodiment, a first conical buffer 208 is provided between the conical structure 203 and the top rod 7; the top rod 7 is provided with a limiting surface 701, one end of the first buffer 208 abuts against the limiting surface 701, and the other end abuts against the conical structure 203; a fixing part 209 is provided near the water outlet 204 on the water outlet pipe 202, and the fixing part 209 is cross-shaped; a second buffer 210 for buffering is provided between the fixing part 209 and the rubber head 4.

[0055] In practical implementation: the first buffer 208 is conical, i.e., a conical spring, with one end of the conical spring abutting against the limiting surface 701 of the top rod 7, and the other end abutting against the conical structure 203. For details, please refer to... Figure 2 The smaller diameter end of the conical spring is located at the limiting surface 701, and the larger diameter end is located at the conical structure 203, so that the push rod 7 can smoothly press the first buffer 208 and push open the rubber head 4. Compared with ordinary springs, the conical spring can fix the push rod 7 and reduce the distance of up and down swaying.

[0056] The water outlet pipe 202 is provided with a water outlet 204. A second buffer 210 is provided between the water outlet 204 and the rubber head 4. In one specific embodiment, the second buffer 210 is a spring. A column is provided at one end of the rubber head 4 facing the water outlet 204. A fixing part 209 is provided near the water outlet 204 on the water outlet pipe 202, and the fixing part 209 is in a cross shape and engages within the water outlet pipe 202. During installation, the column is located within the second buffer 210, and the other end of the second buffer 210 abuts against the fixing part 209.

[0057] Under normal operating conditions, the push rod 7, driven by the iron core 3, will press against the first buffer 208 and push open the rubber head 44. The rubber head 4, under pressure, will then press against the second buffer 210. Next, the second buffer 210 will reset, the rubber head 4 will reset into the sealing groove 207, and the first buffer 208 will reset.

[0058] In one embodiment, the pipe body 2 includes an inner pipe 211, and the sealing structure 5 includes a plurality of sealing elements 501, which are respectively disposed between the water outlet pipe 202 and the inner pipe 211; the sealing elements 501 are arranged in a ring or in a multi-point uniform arrangement.

[0059] In practical implementation: A sealing structure 5 is also provided inside the pipe body 2 to seal the pipe body 2, creating a pressure difference within the pipe body 2. For example... Figure 2 As shown, the sealing structure 5 is located between the outlet pipe 202 and the inner pipe 211, which can play a sealing role and prevent the outlet pipe 202 from shifting vertically. Figure 9 As shown, the sealing structure 5 can be a silicone sphere, positioned at multiple points between the outlet pipe 202 and the inner pipe 211. During installation, it will deform under pressure, forming a seal between the outlet pipe 202 and the inner pipe 211. Alternatively, the sealing structure 5 can be other structures, such as a sealing ring, or a combination of a sealing ring and a sealing sphere.

[0060] In one embodiment, the electromagnetic force generated by the coil 601 after being energized is greater than the adhesive force of the iron core 3 in the inner tube 211.

[0061] In practical implementation: A coil 601 is provided on the outer or inner side of the magnetic yoke ring 6. After the electromagnetic pump is energized, the electromagnetic force of the coil 601 is greater than the adhesive force of the iron core 3, so that the electromagnetic force of the coil 601 is sufficient to overcome the adhesive force of the iron core 3, ensuring that the iron core 3 can be pushed after being energized. Specifically, when the electromagnetic pump is working, the coil 601 generates a magnetic field after being energized. The external magnetic field is guided by the frame 1, and multiple magnetic yoke rings 6 guide the internal magnetic field. Together with the frame 1, they form a closed loop of magnetic field. The position of the magnetic yoke rings 6 is restricted by the isolation pad 602, and the magnetic field is conducted to the movable iron core 3. When the electromagnetic force of the coil 601 is greater than the adhesive force between the iron core 3 and the inner tube 211, the iron core 3 can move under the action of the magnetic field.

[0062] In one embodiment, the outer surface of the rubber head 4 is provided with a conformal coating, which can prevent the rubber head 4 from swelling and getting stuck in the sealing groove 207 after absorbing water.

[0063] In practical implementation: In some application scenarios, it is necessary to pump special solutions. In this case, a pyrene coating is applied to the surface of the rubber head 4 to prevent it from absorbing water and expanding after the rubber head 4 is used, which would cause it to get stuck in the outlet pipe 202 and affect the operation of the electromagnetic pump.

[0064] like Figure 9 As shown, the present invention provides a control method for an electromagnetic pump with an anti-adhesion device, specifically including the following steps: S1, determine if the electromagnetic pump has not been run for a long time; S2, if so, switch the water supply program to chopper and extend the working time; S3 receives the induced current from coil 601; S4, determine whether the iron core 3 is in the preset top-open position based on the induced current; S5, if not, apply a power supply of 40Hz or lower to increase the travel of the core 3.

[0065] In this embodiment, the system first determines whether the electromagnetic pump has been idle for an extended period. This can be done by obtaining the work log or the timestamp of the operation. If the electromagnetic pump has been idle for an extended period, the water supply program is switched to chopper mode, and the operating time is extended. This increases the force exerted by the push rod 7 when opening the rubber head 4, making it easier for the rubber head 4 to reset. Next, the system receives the induced current from the coil 601 and determines whether the iron core 3 is in the preset opening position based on the induced current value. Specifically, the opening position can be determined by pre-setting the induced current value. When the induced current reaches the set value, the iron core 3 is determined to be in the opening position. If not, a power supply of 40Hz or lower is applied to increase the travel of the iron core 3, thereby increasing the force required to push open the rubber head 4 and ensuring the pump can operate normally.

[0066] Furthermore, when the adhesive head 4 is severely stuck together, the power supply of the electromagnetic pump is set to a low frequency, so that the movement stroke of the iron core 3 reaches its maximum, which can push away the adhesive head 4 with a large degree of adhesion. In a specific embodiment, the power supply of the electromagnetic pump is set to 2Hz. After being powered on, the iron core 3 pushes away the adhesive head 4 with a large degree of adhesion.

[0067] Please refer to Figure 10 This invention provides a testing method for an electromagnetic pump with an anti-adhesion device, comprising the following steps: Step 1: Determine if the pump is pumping water normally; Step 2, if so, determine whether the push rod 7 effectively hits the rubber head 4 by visually inspecting the preset rigid connector 205 or the sensor 206 used to sense the rigid connector 205. Step 3: When the rigid connector 205 moves or the sensor 206 senses the rigid connector 205, it is determined that the push rod 7 effectively impacts the rubber head 4.

[0068] In this embodiment, during actual use, it is necessary to quickly check whether the push rod 7 has effectively pushed open the rubber head 4. First, it is necessary to ensure that the pump's pumping function is operating normally. Then, the specially designed rigid connector 205 is inserted from the outlet 204 into or in contact with the rubber head 4. When the push rod 7 first rapidly impacts the rubber head 4, the rigid connector 205 will be quickly pushed out. Whether the rubber head 4 has been effectively impacted is determined visually or by the sensor 206. In a specific embodiment, the sensor 206 can be a force sensor, a displacement sensor, or a fast video recorder, etc. When the sensor 206 is a force sensor, the magnitude of the force on the rigid connector 205 is sensed to determine whether the rubber head 4 has been effectively pushed out. When the sensor 206 is a displacement sensor, the distance the rigid connector 205 moves is sensed to determine whether the rubber head 4 has been pushed out. When the sensor 206 is a high-speed camera, it determines whether the rubber head 4 has been pushed out by the captured image, and then pushes the rigid connector 205 out from the outlet 204.

[0069] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, apparatus, article, or method. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, apparatus, article, or method that includes that element.

[0070] The above description is only a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural changes made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An electromagnetic pump with an anti-adhesion device, comprising a frame; characterized in that, include: The tube body is located within the frame and is equipped with an iron core, a rubber head, and a sealing structure. Multiple magnetic yokes are respectively disposed on the tube body, and at least one of the magnetic yokes is sleeved on the outside of the iron core; A push rod is provided on the side of the iron core facing the rubber head, and the push rod moves away from or pushes the rubber head. A sealed cavity is formed between the tube body, the iron core, the sealing structure, and the rubber head; The tube is equipped with an elastic element, which is located on the side of the iron core away from the top rod; The iron core has a tapered groove on the side facing the push rod, and the push rod is located in the tapered groove and moves within the tapered groove to adjust the pressure of the sealing cavity; The magnetic yoke is equipped with a coil, which is used to output electromagnetic force and sense the position of the iron core. When the iron core is in different positions, the induced current of the coil is different, and the induced current is used to determine whether the rubber head is pushed open. The pipe body includes a water outlet pipe, which has a tapered structure for guiding.

2. The electromagnetic pump with an anti-adhesion device according to claim 1, characterized in that, Includes both energized and de-energized states; When in the energized state, the iron core squeezes the elastic element and moves away from the rubber head, while the push rod moves away from the conical groove to balance the pressure. When the state changes from the energized state to the de-energized state, the elastic element resets and moves the iron core toward the rubber head. The push rod pushes open the rubber head, creating a pressure difference in the sealed cavity and pumping out the liquid. When the pump is left idle for a long time, it is restarted by applying a power supply of 40Hz or lower, which drives the iron core to move and increases the stroke of the iron core.

3. The electromagnetic pump with an anti-adhesion device according to claim 1, characterized in that, The hardness of the push rod is greater than the hardness of the rubber head.

4. The electromagnetic pump with an anti-adhesion device according to claim 1, characterized in that, The stroke of the push rod is 0.1-1.0 mm.

5. The electromagnetic pump with an anti-adhesion device according to claim 1, characterized in that, The water outlet pipe is provided with a water outlet, and the water outlet is movably provided with a rigid connector; the rigid connector extends from the water outlet to the rubber head; When the push rod strikes the rubber head, it pushes the rigid connector to move, and determines whether the rubber head has been effectively struck by visually inspecting the rigid connector or by a preset sensor.

6. The electromagnetic pump with an anti-adhesion device according to claim 1, characterized in that, The water outlet pipe is provided with a sealing groove, and the rubber head is located in the sealing groove and is in contact with or away from the bottom of the sealing groove; The end of the rubber head facing the top rod is arc-shaped, and the sealing groove is arc-shaped; When the push rod pushes the rubber head open, the rubber head disengages from the sealing groove; When the push rod is reset, the rubber head returns to the sealing groove.

7. The electromagnetic pump with an anti-adhesion device according to claim 1, characterized in that, The plurality of magnetic yoke rings are distributed axially at equal intervals along the iron core, and an isolation pad is provided between adjacent magnetic yoke rings; The movement of the iron core can be adjusted by changing the spacing and number of magnetic yoke rings.

8. The electromagnetic pump with an anti-adhesion device according to claim 5, characterized in that, A tapered first buffer is provided between the tapered structure and the top rod; the top rod is provided with a limiting surface, one end of the first buffer abuts against the limiting surface, and the other end abuts against the tapered structure; A fixing part is provided near the water outlet of the water pipe, and the fixing part is cross-shaped; a second buffer is provided between the fixing part and the rubber head for buffering.

9. The electromagnetic pump with an anti-adhesion device according to claim 1, characterized in that, The pipe body includes an inner pipe, and the sealing structure includes multiple sealing elements, which are respectively disposed between the water outlet pipe and the inner pipe; the sealing elements are arranged in a ring or are evenly distributed at multiple points.

10. The electromagnetic pump with an anti-adhesion device according to claim 9, characterized in that, The electromagnetic force generated by the coil after it is energized is greater than the adhesive force of the iron core in the inner tube.

11. The electromagnetic pump with an anti-adhesion device according to claim 6, characterized in that, The outer surface of the rubber head is provided with a conformal coating to prevent the rubber head from absorbing water, swelling, and getting stuck in the sealing groove.

12. A control method for an electromagnetic pump with an anti-adhesion device according to any one of claims 1-11, characterized in that, Includes the following steps: Determine if the electromagnetic pump has not been used for a long time; If so, switch the water supply program to chopper mode and extend the working time; The induced current in the receiving coil; The induced current is used to determine whether the iron core is in the preset top-opening position; If not, apply a power supply of 40Hz or lower to increase the travel of the iron core.

13. A method for testing an electromagnetic pump with an anti-adhesion device according to any one of claims 1-11, characterized in that, Includes the following steps: Determine if the pump is pumping water normally; If so, determine whether the push rod effectively impacts the rubber head by visually inspecting the preset rigid connector or by using a sensor to sense the rigid connector. When the rigid connector moves or the sensor detects the rigid connector, it is determined that the push rod effectively impacts the rubber head.

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