Leak-proof and loosening-proof structure and corresponding electromagnetic pump

Abstract

This divisional application provides a leak-proof and loosening-proof structure and a corresponding electromagnetic pump. The electromagnetic pump includes a coil assembly, a pump tube, an iron core, a return spring, a liquid outlet control spring, a liquid inlet control spring, a liquid outlet nozzle, a liquid inlet nozzle, and a guide rod. The pump tube has an inlet hole and an outlet hole at both ends. The iron core is slidably disposed within the pump tube and extends axially. The liquid outlet nozzle, in conjunction with the liquid outlet control spring, provides a one-way seal for the liquid outlet hole. The liquid inlet nozzle, in conjunction with the liquid inlet control spring, provides a one-way seal for one end of the iron core. The iron core reciprocates to drive the filling of liquid into the pump chamber or the discharge of liquid from the pump chamber. One end of the guide rod is slidably connected to the pump tube, and the other end is connected to the liquid outlet nozzle. By providing a guide rod, the electromagnetic pump of this invention ensures that the movement of the liquid outlet control spring is more regular and orderly during the reciprocating movement of the liquid outlet nozzle, resulting in a longer lifespan and more concentrated and precise elastic force on the liquid outlet nozzle. This allows the liquid outlet nozzle to maintain stable contact with the outlet hole, forming a better seal and providing a leak-proof effect.

Description

[0001] This application is a divisional application. The original application has the application number "202111421703.8" and the application date is "November 26, 2021". The invention title is "Leak-proof Electromagnetic Pump". Technical Field

[0002] This invention relates to the field of electromagnetic pumps, and in particular to a leak-proof and loosening-proof structure and a corresponding electromagnetic pump. Background Technology

[0003] Electromagnetic pumps are industrial products widely used in daily life, such as coffee machines, water dispensers, water purifiers, mops, irons, etc. They come in a wide variety of types and styles. Due to their selectable size, excellent performance, and long lifespan, the market demand has always been large.

[0004] However, due to their structural characteristics, current electromagnetic water pumps on the market all suffer from a significant drawback: a certain percentage of these products leak during use. Leakage is a serious defect, causing economic losses for consumers and negatively impacting both pump manufacturers and system integrators.

[0005] Therefore, it is necessary to provide a leak-proof and loosening-proof structure and a corresponding electromagnetic pump to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a leak-proof and loosening-proof structure and a corresponding electromagnetic pump to solve the problem of leakage in existing electromagnetic pumps.

[0007] To solve the above-mentioned technical problems, the technical solution of the present invention is: a leak-proof and loosening-proof structure, which includes a pump tube, a liquid discharge control spring, a liquid discharge nozzle guide rod, and a loosening-proof cover;

[0008] One end of the pump tube is provided with a liquid outlet hole. The liquid outlet nozzle is located inside the pump tube for one-way sealing of the liquid outlet hole. A connecting end is threaded onto the inner wall of the liquid outlet hole. The outer circumference of the connecting end is fitted with the liquid outlet control spring. The other end of the liquid outlet control spring acts on the liquid outlet nozzle. The connecting end is provided with a first through hole connecting the inner cavity of the pump tube and the external space. The anti-loosening cap is detachably fixedly connected to one end of the pump tube near the liquid outlet hole. One end of the guide rod slides through both the connecting end and the anti-loosening cap. The anti-loosening cap can rotate synchronously with the guide rod. The other end of the guide rod is connected to the liquid outlet nozzle to assist in the positive sealing of the liquid outlet nozzle.

[0009] In this invention, the leak-proof and loosening-proof structure also includes a fixing cover and an elastic component;

[0010] The fixed cap is sealed to one end of the liquid outlet, and the anti-loosening cap is restricted between the fixed cap and the pump pipe. The anti-loosening cap is provided with the elastic member and the first positioning protrusion on both sides. The fixed cap has a plurality of first positioning grooves distributed in a ring on its inner side. The elastic member is located between the anti-loosening cap and the pump pipe and is used to squeeze the anti-loosening cap so that the first positioning protrusion and the first positioning groove are kept in a positioning connection. The axial length of the first positioning protrusion is less than the axial elastic stroke of the elastic member, so that by compressing the elastic member and rotating the anti-loosening cap, the first positioning protrusion can be switched to engage with different first positioning grooves.

[0011] The anti-loosening cover includes an outer ring, an inner ring, and a connecting rod. The inner ring is located inside the outer ring, and the connecting rod connects the inner ring and the outer ring. The first positioning protrusion is located on the outer ring.

[0012] Furthermore, the inner ring is provided with a protrusion in the middle for easy gripping and twisting, the surface of the protrusion is provided with anti-slip texture, and the guide rod passes through the protrusion.

[0013] In this invention, the elastic member includes an annular plate, a bent portion, a spring, and a ball bearing. Multiple bent portions are connected to the periphery of the annular plate near the anti-loosening cover. A through hole is provided on the bent portion. The spring is disposed between the bent portion and the annular plate. The ball bearing is disposed between the spring and the through hole. The ball bearing contacts the anti-loosening cover through the through hole.

[0014] In this invention, a sealing ring is provided between the fixed cover and the pump pipe, and the fixed cover and the pump pipe are fixedly connected by a threaded connection.

[0015] In this invention, the anti-leakage and anti-loosening structure further includes a drive cover and a fixing ring. The fixing ring is snapped into the pump pipe to restrict the axial movement of the anti-loosening cover. The inner side of the fixing ring is provided with a second positioning tooth groove. The drive cover is axially slidably connected to the pump pipe.

[0016] The outer end of the anti-loosening cover is provided with a plurality of elastic telescopic rods. The elastic telescopic rod includes a limiting end and a first rod segment and a second rod segment that are elastically connected. The first rod segment is connected to the anti-loosening cover. The limiting end is connected to the end of the second rod segment away from the first rod segment. The second rod segment is provided with a second positioning protrusion corresponding to the second positioning groove.

[0017] The drive cover is rotatably connected to the outer periphery of the plurality of second rod segments and is limited to the inner side of the limiting end. When the elastic telescopic rod retracts, the second positioning protrusion and the second positioning groove are positioned and engaged, thereby enabling the fixing ring to restrict the rotation of the anti-loosening cover. When the drive cover presses the limiting end to extend the elastic telescopic rod, the second positioning protrusion and the second positioning groove are misaligned, thereby enabling the drive cover to drive the anti-loosening cover to rotate.

[0018] Furthermore, the extension and retraction direction of the second rod segment is inclined relative to the axial center line of the drive cover, and the end of the second rod segment away from the first rod segment is further away from the axial center line of the drive cover.

[0019] In addition, the second positioning tooth is slidably disposed on the second rod segment along the axial direction, and a slider and a first elastic element are respectively disposed at both ends of the second positioning tooth in the sliding direction. The slider is slidably disposed on the second rod segment, and the sliding direction is along the radial direction of the second rod segment.

[0020] The second rod segment is slidably sleeved on the outer periphery of the first rod segment. A second elastic element is sleeved on the first rod segment. A stop block is provided at one end of the first rod segment located inside the second rod segment. The second elastic element is restricted between the inner wall of the second rod segment and the stop block. A pressing rod for pressing the slider is provided on the side of the stop block near the second elastic element. The slider is provided with a first inclined surface for pressing the second positioning protrusion and a second inclined surface for bearing the pressing of the pressing rod.

[0021] The drive cover is provided with a third positioning groove on the side near the fixed ring. When the drive cover presses the limiting end to extend the elastic telescopic rod, the pressing rod presses the second positioning protrusion to slide towards the third positioning groove through the slider. The second positioning protrusion and the third positioning groove are positioned and engaged so that the drive cover can stably drive the anti-loosening cover to rotate.

[0022] The present invention also includes an electromagnetic pump using the above-described anti-leakage and anti-loosening structure.

[0023] Compared with the prior art, the advantages of this invention are as follows: By setting a guide rod, the electromagnetic pump of this invention makes the movement of the liquid control spring more regular and orderly during the reciprocating movement of the liquid outlet nozzle, resulting in a longer lifespan and more concentrated and precise elastic force on the liquid outlet nozzle. The liquid outlet nozzle can make stable contact with the liquid outlet hole, forming a better seal and providing a leak-proof effect. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of the present invention.

[0025] Figure 1 This is a schematic diagram of the structure of the first embodiment of the electromagnetic pump of the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of a second embodiment of the electromagnetic pump of the present invention.

[0027] Figure 3 for Figure 2 Enlarged view of the local structure at point A in the middle.

[0028] Figure 4 This is a schematic diagram of the anti-loosening cover in the second embodiment.

[0029] Figure 5 This is a schematic diagram of the elastic member in the second embodiment.

[0030] Figure 6 This is a schematic diagram of the structure of the electromagnetic pump of the present invention in a third embodiment.

[0031] Figure 7 This is a schematic diagram of the retracted state of the elastic telescopic rod in the third embodiment.

[0032] Figure 8 This is a schematic diagram of the extended state of the elastic telescopic rod in the third embodiment.

[0033] Figure 9 This is a schematic diagram of the flow regulating component in the third embodiment.

[0034] Figure 10 This is a schematic diagram of the fourth embodiment of the electromagnetic pump of the present invention.

[0035] Figure 11 This is a schematic diagram of the flow regulating component in the fourth embodiment. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The directional terms mentioned in this invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this invention, and are not intended to limit this invention.

[0038] The terms "first" and "second" used in the terminology of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as limiting the order of events.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, a connection can be a detachable connection or a connection of an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] Existing electromagnetic pumps suffer from leakage problems during use.

[0041] The following is a first embodiment of an electromagnetic pump provided by the present invention that can solve the above-mentioned technical problems.

[0042] Please refer to Figure 1 ,in Figure 1 This is a schematic diagram of the structure of the first embodiment of the electromagnetic pump of the present invention.

[0043] In the diagram, units with similar structures are represented by the same labels.

[0044] This embodiment provides a leak-proof electromagnetic pump, which includes a coil assembly 12, a pump tube, an iron core 13, a reset spring 14, a liquid outlet control spring 19, a liquid inlet control spring 18, a liquid outlet nozzle 16, a liquid inlet nozzle 15, and a guide rod 17.

[0045] The pump tube has an inlet hole 113 and an outlet hole 114 at both ends. The iron core 13 is slidably installed inside the pump tube and is axially continuous. The iron core can also have a through hole in the radial direction to facilitate liquid entry. The outlet rubber head 16 cooperates with the outlet control spring 19 to unidirectionally seal the outlet hole 114. The inlet rubber head 15 cooperates with the inlet control spring 18 to unidirectionally seal the port at one end of the iron core 13. The pump chamber is between the iron core 13 and the outlet hole 114. The outlet rubber head 16 and the inlet rubber head 15 block the water flow in opposite directions at both ends of the pump chamber.

[0046] The iron core 13 has a liquid storage level and a liquid discharge level located at both ends on the sliding trajectory. The coil assembly 12 is arranged around the outer periphery of the pump tube and is used to drive the iron core 13 to slide towards the liquid storage level, thereby opening the liquid inlet nozzle 15 to allow the liquid to fill the pump chamber. The reset spring 14 is arranged between the iron core 13 and the inner wall of the pump tube and is used to drive the iron core 13 to slide towards the liquid discharge level, thereby driving the liquid in the pump chamber to be discharged through the liquid outlet 114.

[0047] One end of the guide rod 17 is slidably connected to the pump pipe, and the other end is connected to the liquid outlet nozzle 16 to assist in the positive sealing of the liquid outlet nozzle 16.

[0048] Specifically, a connecting end 115 is provided on the inner wall of the outlet hole 114. The first end of the connecting end 115 is connected to the inner wall of the pump pipe, and the outer periphery of the second end of the connecting end 115 is fitted with an outlet control spring 19. The first end of the connecting end 115 is provided with a first through hole connecting the inner cavity of the pump pipe and the external space. Figure 1 (The reference numeral 114 can also refer to the first through hole). The guide rod 17 and the connecting end 115 are slidably connected through the guide rod 17. During the reciprocating movement of the dispensing nozzle 16, the guide rod 17 can guide the movement of the dispensing nozzle 16, making its movement highly stable. The dispensing nozzle can make stable contact with the dispensing port, with good sealing performance and leak-proof effect.

[0049] In this embodiment, both the liquid outlet control spring 19 and the liquid inlet control spring 18 are conical springs. The conical springs have a conical structure, which can further improve the concentration of elastic force and prevent radial oscillation, thereby improving the sealing performance of the liquid outlet nozzle 16 and the liquid inlet nozzle 15.

[0050] The pump pipe in this embodiment includes a front section pipe 111 and a rear section pipe 112. The front section pipe 111 and the rear section pipe 112 are detachably connected, which facilitates the assembly of internal components.

[0051] The leak-proof electromagnetic pump also includes a sleeve 116, which is connected inside the pump tube and sleeved around the outer periphery of the iron core 13. One end of the sleeve 116 is provided with a liquid outlet, which is connected to the liquid outlet hole 114. The liquid outlet head 16 is movable to seal the liquid outlet, and the liquid inlet control spring 18 is located between the liquid outlet and the liquid inlet head 15.

[0052] When the electromagnetic pump in this embodiment is working, after the coil assembly 12 is energized, it can drive the iron core 13 to slide back and forth in conjunction with the reset spring 14. Figure 1In the view orientation, when the iron core 13 slides to the left, a gap will be generated between the iron core 13 and the inlet nozzle 15, and the liquid can flow into the pump chamber through the gap between the iron core 13 and the inlet nozzle 15. The outlet nozzle 16 will block the outlet to prevent the liquid from flowing back. When the iron core 13 slides to the right, the inlet nozzle 15 will squeeze the liquid in the pump chamber and push open the outlet nozzle 16, so that the liquid is discharged through the outlet hole 114. After the discharge is completed, the outlet nozzle 16 will block the outlet again under the action of the outlet control spring 19. The guide rod 17 can cooperate with the outlet nozzle 16 to perform stable reciprocating sliding.

[0053] The following is a second embodiment of an electromagnetic pump provided by the present invention that can solve the above-mentioned technical problems. In this embodiment, the structure and principle of the coil assembly 12, iron core 13, reset spring 14, liquid outlet control spring 19, liquid inlet control spring 18, liquid outlet nozzle 16, and liquid inlet nozzle 15 are the same as those of the first embodiment. The main difference is that a connecting end is movably provided, and a corresponding movable adjustment structure is provided. The elastic force of the liquid outlet control spring on the liquid outlet nozzle 16 can be further changed according to the actual use. The liquid outlet nozzle 16 can be adjusted so that it is not too tight and easily damaged, nor too loose and leaking, thereby improving the sealing effect.

[0054] In this embodiment, the same reference numerals are used for the same structures as in the first embodiment. However, the rear section of the pump pipe 212 has undergone adaptive structural modifications to its corresponding movable adjustment structure compared to the first embodiment.

[0055] Please refer to Figure 2 This embodiment provides a leak-proof electromagnetic pump, which includes a coil assembly 12, a pump tube, an iron core 13, a reset spring 14, a liquid outlet control spring 19, a liquid inlet control spring 18, a liquid outlet nozzle 16, a liquid inlet nozzle 15, and a guide rod 17.

[0056] The pump tube is provided with an inlet hole 113 and an outlet hole 114 at both ends. The iron core 13 is slidably disposed in the pump tube and passes through the axial direction. The outlet rubber head 16 cooperates with the outlet control spring 19 to seal the outlet hole 114 in one direction. The inlet rubber head 15 cooperates with the inlet control spring 18 to seal the port at one end of the iron core 13 in one direction. The space between the iron core 13 and the outlet hole 114 is the pump chamber. The outlet rubber head 16 and the inlet rubber head 15 block the water at both ends of the pump chamber in opposite directions.

[0057] The iron core 13 has a liquid storage level and a liquid discharge level located at both ends on the sliding trajectory. The coil assembly 12 is arranged around the outer periphery of the pump tube and is used to drive the iron core 13 to slide towards the liquid storage level, thereby opening the liquid inlet nozzle 15 to allow the liquid to fill the pump chamber. The reset spring 14 is arranged between the iron core 13 and the inner wall of the pump tube and is used to drive the iron core 13 to slide towards the liquid discharge level, thereby driving the liquid in the pump chamber to be discharged through the liquid outlet 114.

[0058] One end of the guide rod 17 is slidably connected to the pump pipe, and the other end is connected to the liquid outlet nozzle 16 to assist in the positive sealing of the liquid outlet nozzle 16.

[0059] A connecting end 21 is provided on the inner wall of the liquid outlet 114. The first end of the connecting end 21 is connected to the inner wall of the pump tube. The outer periphery of the second end of the connecting end 21 is fitted with a liquid outlet control spring 19. The first end of the connecting end 21 is provided with a first through hole connecting the inner cavity of the pump tube and the external space. The guide rod 17 is slidably connected to the connecting end 21.

[0060] Please refer to the following: Figure 3 In this embodiment, the leak-proof electromagnetic pump also includes an anti-loosening cover 22. The anti-loosening cover 22 is detachably fixedly connected to one end of the pump tube near the outlet hole 114. The connecting end 21 is threadedly connected to the inner wall of the outlet hole 114. The guide rod 17 passes through both the connecting end 21 and the anti-loosening cover 22. The guide rod 17 is a square rod, which allows the guide rod 17 to rotate synchronously with the connecting end 21 and the anti-loosening cover. Due to the frequent movement of the outlet control spring 19 sleeved on the connecting end 21, the connecting end 21 is prone to loosening, which in turn affects the sealing performance of the outlet rubber head 16 and causes leakage. The anti-loosening cover 22 can prevent the connecting end 21 from loosening.

[0061] Furthermore, the leak-proof electromagnetic pump also includes a fixed cover 24, which is fixedly connected to one end of the liquid outlet 114. A sealing ring 25 is provided between the fixed cover 24 and the pump pipe, and a fixed sealing connection can be formed by threaded connection.

[0062] The anti-loosening cover 22 is positioned between the fixed cover 24 and the pump pipe. The anti-loosening cover 22 has elastic members 23 and first positioning protrusions 225 on both sides. The fixed cover 24 has multiple first positioning grooves distributed in a ring on its inner side. When the first positioning protrusions 225 and the first positioning grooves are positioned and connected, the anti-loosening cover 22 cannot rotate, thereby limiting the rotation of the connecting end 21 through the guide rod 17, thus achieving an anti-loosening effect.

[0063] The elastic member 23 is located between the anti-loosening cover 22 and the pump pipe. It is used to squeeze the anti-loosening cover 22 so that the first positioning protrusion 225 and the first positioning groove are kept in a positioning connection. The axial length of the first positioning protrusion 225 is less than the axial elastic stroke of the elastic member 23, so that by compressing the elastic member 23 and rotating the anti-loosening cover 22, the first positioning protrusion 225 can be switched to cooperate with different first positioning grooves. Then, the guide rod 17 drives the connecting end 21 to rotate. The connecting end 21 is screwed in and out to change the elastic force of the liquid discharge control spring 19 on the seal.

[0064] Please refer to Figure 4In this embodiment, the anti-loosening cover 22 includes an outer ring portion 223, an inner ring portion 222, and a connecting rod 224. The inner ring portion 222 is located inside the outer ring portion 223, and the connecting rod 224 is connected between the inner ring portion 222 and the outer ring portion 223. The first positioning protrusion 225 is located on the outer ring portion 223. The middle part of the inner ring portion 222 is provided with a boss portion 221 that is easy to grip and twist. The surface of the boss portion 221 is provided with anti-slip texture. The guide rod 17 passes through the boss portion 221. The anti-loosening cover 22 facilitates the passage of liquid and also provides good screwing adjustment for the user.

[0065] Please refer to Figure 5 In this embodiment, the elastic member 23 includes an annular plate 231, a bending portion 232, a spring, and a ball bearing. Multiple bending portions 232 are connected to the periphery of the annular plate 231 near the anti-loosening cover 22. A through hole 233 is provided on the bending portion 232. The spring 26 is disposed between the bending portion 232 and the annular plate 231. The ball bearing is disposed between the spring 26 and the through hole 233. The ball bearing contacts the anti-loosening cover 22 through the through hole 233. The dual elastic force of the bending portion 232 and the spring 26 enables it to form a stable elastic support for the anti-loosening cover 22. At the same time, the arrangement of the ball bearing allows the anti-loosening cover 22 to rotate smoothly when the first positioning protrusion 225 and the first positioning groove are disengaged.

[0066] When the electromagnetic pump in this embodiment needs to adjust the connection end 21, simply pinch the boss part 221 and press the anti-loosening cover 22 towards the elastic member 23 to disengage the first positioning protrusion 225 from the first positioning groove. Then, rotate the anti-loosening cover 22 to drive the connection end 21 to rotate, thereby adjusting the preload of the liquid discharge control spring 19.

[0067] In addition, many electromagnetic pumps in the existing technology have the problem of non-adjustable output flow rate, and in particular lack a comprehensive structure for leak prevention and flow regulation.

[0068] The following is a third embodiment of an electromagnetic pump provided by the present invention that can solve the above-mentioned technical problems. In this embodiment, the structure and principle of the coil assembly 12, iron core 13, reset spring 14, liquid outlet control spring 19, liquid inlet control spring 18, liquid outlet nozzle 16, and liquid inlet nozzle 15 are the same as those in the second embodiment. The main difference is that the movable adjustment structure of the connecting end is different, and a flow regulating component is provided to adjust the output flow.

[0069] Please refer to Figure 6 This embodiment provides a leak-proof electromagnetic pump, which includes a coil assembly 12, a pump tube, an iron core 13, a reset spring 14, a liquid outlet control spring 19, a liquid inlet control spring 18, a liquid outlet nozzle 16, a liquid inlet nozzle 15, and a guide rod 17.

[0070] The pump tube has an inlet hole 113 and an outlet hole 114 at both ends. The iron core 13 is slidably installed inside the pump tube and is axially continuous. The outlet rubber head 16 cooperates with the outlet control spring 19 to unidirectionally seal the outlet hole 114. The inlet rubber head 15 cooperates with the inlet control spring 18 to unidirectionally seal the port at one end of the iron core 13. The space between the iron core 13 and the outlet hole 114 is the pump chamber. The outlet rubber head 16 and the inlet rubber head 15 block the water flow in opposite directions at both ends of the pump chamber.

[0071] The iron core 13 has a liquid storage level and a liquid discharge level located at both ends on the sliding trajectory. The coil assembly 12 is arranged around the outer periphery of the pump tube and is used to drive the iron core 13 to slide towards the liquid storage level, thereby opening the liquid inlet nozzle 15 to allow the liquid to fill the pump chamber. The reset spring 14 is arranged between the iron core 13 and the inner wall of the pump tube and is used to drive the iron core 13 to slide towards the liquid discharge level, thereby driving the liquid in the pump chamber to be discharged through the liquid outlet 114.

[0072] One end of the guide rod 17 is slidably connected to the pump pipe, and the other end is connected to the liquid outlet nozzle 16 to assist in the positive sealing of the liquid outlet nozzle 16.

[0073] In this embodiment, a connecting end 31 is provided on the inner wall of the liquid outlet 114. The first end of the connecting end 31 is connected to the inner wall of the pump tube. The outer periphery of the second end of the connecting end 31 is fitted with a liquid outlet control spring 19. The first end of the connecting end 31 is provided with a first through hole that connects the inner cavity of the pump tube and the external space. The guide rod 17 is slidably connected to the connecting end 31.

[0074] The leak-proof electromagnetic pump also includes a locking cover 32, which is detachably and fixedly connected to one end of the pump tube near the outlet hole 114. The connecting end 31 is threadedly connected to the inner wall of the outlet hole 114. The guide rod 17 passes through both the connecting end 31 and the locking cover 32. The guide rod 17 is a square rod, which allows the guide rod 17 to rotate synchronously with the connecting end 21 and the locking cover.

[0075] Please refer to Figure 6 In this embodiment, the leak-proof electromagnetic pump also includes a drive cover 36 and a fixing ring 33. The fixing ring 33 is snapped into the pump pipe and cannot be rotated. It is used to restrict the axial movement of the anti-loosening cover 32. The inner side of the fixing ring 33 is provided with a second positioning tooth groove. The drive cover 36 is axially slidably connected to the pump pipe.

[0076] The outer end of the anti-loosening cover 32 is provided with multiple elastic telescopic rods 34. The elastic telescopic rod 34 includes a limiting end 3421 and a first rod segment 341 and a second rod segment 342 that are elastically connected. The first rod segment 341 is connected to the anti-loosening cover 32. The limiting end 3421 is connected to the end of the second rod segment 342 away from the first rod segment 341. The limiting end 3421 can be connected to the second rod segment 342 by means of a threaded connection, which also facilitates the disassembly and assembly of the drive cover 36. The second rod segment 342 is provided with a second positioning protrusion 344 that corresponds to the second positioning groove.

[0077] The drive cover 36 is rotatably connected to the outer periphery of multiple second rod segments 342 and limited to the inner side of the limiting end 3421. When the elastic telescopic rod 34 retracts, the second positioning protrusion 344 and the second positioning groove are positioned and engaged, thereby enabling the fixing ring 33 to restrict the rotation of the anti-loosening cover 32. When the drive cover 36 presses the limiting end 3421 to extend the elastic telescopic rod 34, the second positioning protrusion 344 and the second positioning groove are misaligned, thereby enabling the drive cover 36 to drive the anti-loosening cover 32 to rotate through the elastic telescopic rod 34. Furthermore, it can drive the connecting end 31 to rotate through the guide rod 17, thereby adjusting the elastic force of the liquid discharge control spring 19 on the liquid discharge head 16.

[0078] Preferably, the extension and retraction directions of the plurality of second rod segments 342 are inclined relative to the axial centerline of the drive cover 36, and the end of the second rod segment 342 furthest from the first rod segment 341 is further away from the axial centerline of the drive cover 36. This allows the plurality of second rod segments 342 to spread outward when they extend, resulting in greater compressive force and friction between the second rod segments 342 and the drive cover 36, thereby facilitating the drive cover 36 to rotate the anti-loosening cover 32 via the elastic telescopic rod 34.

[0079] Please refer to Figure 7 and Figure 8 In this embodiment, the second positioning tooth 344 is slidably disposed on the second rod segment 342 along the axial direction. The two ends of the second positioning tooth 344 in the sliding direction are respectively provided with a slider 345 and a first elastic element 346. The slider 345 is slidably disposed on the second rod segment 342, and the sliding direction is along the radial direction of the second rod segment 342.

[0080] The second rod segment 342 is slidably sleeved on the outer periphery of the first rod segment 341. A second elastic element 343 is sleeved on the first rod segment 341. A stop block 3411 is provided at one end of the first rod segment 341 located inside the second rod segment 342. The second elastic element 343 is restricted between the inner wall of the second rod segment 342 and the stop block 3411. A pressing rod 3412 for pressing the slider 345 is provided on the side of the stop block 3411 near the second elastic element 343. The slider 345 is provided with a first inclined surface for pressing the second positioning protrusion 344 and a second inclined surface for bearing the pressing of the pressing rod 3412.

[0081] The drive cover 36 is provided with a third positioning groove 361 on the side near the fixed ring 33. When the drive cover 36 presses the limiting end 3421 to extend the elastic telescopic rod 34, the pressing rod 3412 presses the second positioning protrusion 344 through the slider 345 to slide towards the third positioning groove 361. The second positioning protrusion 344 and the third positioning groove 361 are positioned and engaged so that the drive cover 36 can stably drive the anti-loosening cover 32 to rotate through the elastic telescopic rod 34.

[0082] Please refer to Figure 6 and Figure 9 In this embodiment, the leak-proof electromagnetic pump also includes a flow regulating component 35, which is rotatably disposed within the first through hole. The first through hole includes a first through port 311 extending into the inner cavity of the pump pipe and a second through port extending into the external space (e.g., ...). Figure 6 The second through-hole is located at the right end of the connecting end 31. The structure of the first through-hole is similar to that of the second through-hole, so it can also be referred to. Figure 9 The flow regulating component 35 is provided with a second through hole. The second through hole includes a third through port 353 that penetrates into the inner cavity of the pump pipe and a fourth through port 354 that penetrates into the external space. The second through port and the fourth through port 354 are always aligned.

[0083] A through groove is provided on the inner wall of the pump pipe. The flow regulating component 35 includes a lug 351 extending into the through groove. One end of the drive cover 36 is sealed and connected to the through groove. The drive cover 36 contacts the lug 351 to drive the flow regulating component 35 to rotate, thereby controlling the alignment of the first through port 311 and the third through port 353, and thus controlling the output flow rate. Furthermore, when the drive cover 36 controls the rotation of the flow regulating component 35, the second positioning protrusion 344 and the second positioning groove are positioned in a mating state. At this time, the anti-loosening cover 32 can restrict the rotation of the connecting end 31, so that the flow regulation and the regulation of the connecting end 31 do not interfere with each other.

[0084] It is understandable that the flow regulating component 35 is provided with a third through port 353 on both radial sides. On the radial cross-section of the pump pipe, the angle of a single through slot is designed to be between 60 and 90 degrees. That is, by controlling the lug 351 to rotate completely within the through slot for one stroke, the first through port 311 and the third through port 353 can be controlled to gradually complete the process from complete alignment to complete misalignment.

[0085] In this embodiment, an elastic adhesive block 352 is embedded in the lug 351, and a rough layer is provided at the end of the drive cover 36 for contacting the adhesive block 352. This allows the drive cover 36 to be stably pressed against the lug 351 when the drive cover 36 is pushed toward the liquid dispensing nozzle 16, which is beneficial for the drive cover 36 to drive the flow regulating component 35 to rotate.

[0086] The flow regulating component 35 has a positioning groove 355 on its outer periphery for setting a sealing ring. The sealing ring is used to achieve a movable seal between the flow regulating component 35 and the connecting end 31.

[0087] When the electromagnetic pump in this embodiment needs to adjust the connection end 21, the drive cover 36 is pulled away from the dispensing nozzle 16. The drive cover 36 presses against the limiting end 3421, causing the elastic telescopic rod 34 to extend. The second positioning protrusion 344 is misaligned with the second positioning groove, and the second positioning protrusion 344 is positioned and engaged with the third positioning groove 361. This allows the drive cover 36 to drive the anti-loosening cover 32 to rotate via the elastic telescopic rod 34. In this way, the connection end 31 can be rotated via the guide rod 17, thereby adjusting the elastic force of the dispensing control spring 19 on the dispensing nozzle 16.

[0088] When the flow regulating component 35 needs to be adjusted, push the drive cover 36 towards the liquid outlet nozzle 16 so that the drive cover 36 and the lug 351 are pressed together. Then, the drive cover 36 can be rotated to drive the flow regulating component 35 to rotate, thereby adjusting the alignment of the first through port 311 and the third through port 353 to achieve the purpose of flow regulation.

[0089] The following is a fourth embodiment of an electromagnetic pump provided by the present invention that can solve the above-mentioned technical problems. Its main difference lies in the addition of a flow regulating component based on the first embodiment, and the structure of the flow regulating component differs from that in the third embodiment.

[0090] Please refer to Figure 10 This embodiment provides a leak-proof electromagnetic pump, which includes a coil assembly 12, a pump tube, an iron core 13, a reset spring 14, a liquid outlet control spring 19, a liquid inlet control spring 18, a liquid outlet nozzle 16, a liquid inlet nozzle 15, and a guide rod 17.

[0091] The pump tube has an inlet hole 113 and an outlet hole 114 at both ends. The iron core 13 is slidably installed inside the pump tube and is axially continuous. The outlet rubber head 16 cooperates with the outlet control spring 19 to unidirectionally seal the outlet hole 114. The inlet rubber head 15 cooperates with the inlet control spring 18 to unidirectionally seal the port at one end of the iron core 13. The space between the iron core 13 and the outlet hole 114 is the pump chamber. The outlet rubber head 16 and the inlet rubber head 15 block the water flow in opposite directions at both ends of the pump chamber.

[0092] The iron core 13 has a liquid storage level and a liquid discharge level located at both ends on the sliding trajectory. The coil assembly 12 is arranged around the outer periphery of the pump tube and is used to drive the iron core 13 to slide towards the liquid storage level, thereby opening the liquid inlet nozzle 15 to allow the liquid to fill the pump chamber. The reset spring 14 is arranged between the iron core 13 and the inner wall of the pump tube and is used to drive the iron core 13 to slide towards the liquid discharge level, thereby driving the liquid in the pump chamber to be discharged through the liquid outlet 114.

[0093] One end of the guide rod 17 is slidably connected to the pump pipe, and the other end is connected to the liquid outlet nozzle 16 to assist in the positive sealing of the liquid outlet nozzle 16.

[0094] In this embodiment, a connecting end 31 is provided on the inner wall of the liquid outlet 114. The first end of the connecting end 31 is connected to the inner wall of the pump tube. The outer periphery of the second end of the connecting end 31 is fitted with a liquid outlet control spring 19. The first end of the connecting end 31 is provided with a first through hole that connects the inner cavity of the pump tube and the external space. The guide rod 17 is slidably connected to the connecting end 31.

[0095] The first through hole includes a first through port 1511 that penetrates into the inner cavity of the pump pipe and a second through port that penetrates into the external space. The flow regulating component 41 is rotatably disposed in the first through hole. The flow regulating component 41 achieves the purpose of regulating the flow by forming different degrees of blockage of the first through port 1511.

[0096] Please refer to Figure 11 Two first through-holes 1511 are arranged opposite each other in the first through-hole. The flow regulating component 41 in this embodiment includes two baffles 411 for blocking the first through-holes 1511. One end of each baffle 411 is provided with a lug 412. The inner ends of the two baffles 411 are rotatably connected by two rotating rods 413. The rotating shaft 414 between the two rotating rods 413 is coaxial with the central axis in the first through-hole. When the lug 412 is turned to control the rotation of the baffle 411, the baffle 411 can slide against the inner wall of the connecting end 115 to block the first through-hole 1511. The two baffles 411 are controlled independently, which has strong independence. When they are used together for flow regulation, the adjustability is stronger.

[0097] The electromagnetic pump of the present invention has a connecting end on the inner wall of the outlet hole. The first end of the connecting end has a first through hole. The first through hole includes a first through port that penetrates into the inner cavity of the pump tube and a second through port that penetrates into the external space. The flow regulating component is rotatably disposed in the first through hole. The flow regulating component can adjust the output flow by forming different degrees of blockage of the first through port, which is convenient for adjustment.

[0098] In addition, by setting a guide rod, the electromagnetic pump makes the movement of the liquid control spring more regular and orderly during the reciprocating movement of the liquid outlet nozzle, resulting in a longer lifespan and more concentrated and precise elastic force on the liquid outlet nozzle. The liquid outlet nozzle can make stable contact with the liquid outlet hole, forming a better seal and providing a leak-proof effect. Furthermore, this invention can effectively integrate the leak-proof structure and the flow regulation structure, resulting in strong overall performance.

[0099] In summary, although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the invention, and can be applied to electromagnetic pumps of different types and sizes. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention is defined by the claims.

Claims

1. A leakage-proof and loosening-proof structure, characterized by comprising: The pump pipe, the liquid outlet control spring, the liquid outlet rubber head, the guide rod and the anti-loose cover are included. One end of the pump pipe is provided with a liquid outlet hole, and the liquid outlet rubber head is located in the pump pipe for unidirectional sealing of the liquid outlet hole. A connecting end is threadedly connected to the inner wall of the liquid outlet hole. The outer periphery of the connecting end is sleeved with the liquid outlet control spring, and the other end of the liquid outlet control spring acts on the liquid outlet rubber head. The connecting end is provided with a first through hole for communication between the inner cavity of the pump pipe and the external space. The anti-loose cover is detachably fixedly connected to one end of the pump pipe close to the liquid outlet hole. One end of the guide rod is slidably penetrated through the connecting end and the anti-loose cover. The anti-loose cover can be synchronously rotated with the guide rod. The other end of the guide rod is connected with the liquid outlet rubber head to assist the liquid outlet rubber head in positive sealing. The anti-leakage anti-loose structure further comprises a fixed cover and an elastic member. The fixed cover is sealingly connected to one end of the liquid outlet hole. The anti-loose cover is limited between the fixed cover and the pump pipe. The anti-loose cover is provided with the elastic member and the first positioning protrusion on both sides, respectively. The fixed cover is annularly distributed with a plurality of first positioning tooth grooves on the inner side. The elastic member is located between the anti-loose cover and the pump pipe for extruding the anti-loose cover so that the first positioning protrusion and the first positioning tooth groove are kept in positioning connection. The axial length of the first positioning protrusion is less than the axial elastic stroke of the elastic member, so that the first positioning protrusion can be matched with different first positioning tooth grooves by compressing the elastic member and rotating the anti-loose cover.

2. The leakage and loosening prevention structure according to claim 1, characterized by The anti-loose cover comprises an outer ring portion, an inner ring portion and a connecting rod. The inner ring portion is located on the inner side of the outer ring portion. The connecting rod is connected between the inner ring portion and the outer ring portion. The first positioning protrusion is located on the outer ring portion.

3. The leakage and loosening prevention structure according to claim 2, characterized by The middle part of the inner ring portion is provided with a boss portion for easy gripping and screwing. The surface of the boss portion is provided with anti-slip lines. The guide rod penetrates through the boss portion.

4. The leakage and loosening prevention structure according to claim 1, characterized by The elastic member comprises a ring-shaped plate, a bent portion, a spring and a ball. A plurality of bent portions are connected to the side periphery of the ring-shaped plate close to the anti-loose cover. The bent portion is provided with a through hole. The spring is arranged between the bent portion and the ring-shaped plate. The ball is arranged between the spring and the through hole. The ball contacts the anti-loose cover through the through hole.

5. The leakage and loosening prevention structure according to claim 1, characterized by A sealing ring is arranged between the fixed cover and the pump pipe. The fixed cover and the pump pipe are fixedly connected in a threaded connection manner.

6. A leakage-proof and loosening-proof structure characterized by comprising: The pump pipe, the liquid outlet control spring, the liquid outlet rubber head, the guide rod and the anti-loose cover are included. One end of the pump pipe is provided with a liquid outlet hole, the liquid outlet rubber head is located in the pump pipe for one-way sealing of the liquid outlet hole, the inner wall of the liquid outlet hole is threadedly connected with a connecting end, the outer periphery of the connecting end is sleeved with the liquid outlet control spring, the other end of the liquid outlet control spring acts on the liquid outlet rubber head, the connecting end is provided with a first through hole communicating the inner cavity of the pump pipe and the external space, the anti-loose cover is detachably fixedly connected to one end of the pump pipe close to the liquid outlet hole, one end of the guide rod is slidably penetrated through the connecting end and the anti-loose cover, the anti-loose cover can be synchronously rotated with the guide rod, the other end of the guide rod is connected with the liquid outlet rubber head to assist the liquid outlet rubber head in positive sealing; The anti-leakage anti-loose structure further comprises a driving cover and a fixing ring, the fixing ring is clamped in the pump pipe and is used for limiting the axial movement of the anti-loose cover, the inner side of the fixing ring is provided with a second positioning tooth groove, and the driving cover is axially slidably connected to the pump pipe; One end of the outer side of the anti-loose cover is provided with a plurality of elastic telescopic rods, the elastic telescopic rod comprises a limiting end, a first rod segment and a second rod segment which are elastically connected, the first rod segment is connected with the anti-loose cover, the limiting end is connected to one end of the second rod segment away from the first rod segment, and the second rod segment is provided with a second positioning convex tooth corresponding to the second positioning tooth groove; The driving cover is rotationally connected to the outer periphery of the plurality of second rod segments and is limited to the inner side of the limiting end, when the elastic telescopic rod is contracted, the second positioning convex tooth is positioned and matched with the second positioning tooth groove, so that the fixing ring can limit the rotation of the anti-loose cover, when the driving cover extrudes the limiting end and the elastic telescopic rod is elongated, the second positioning convex tooth is misaligned with the second positioning tooth groove, so that the driving cover can drive the anti-loose cover to rotate.

7. The leakage and loosening prevention structure according to claim 6, characterized by The telescopic direction of the second rod segment is obliquely arranged relative to the axial center line of the driving cover, and one end of the second rod segment away from the first rod segment is further away from the axial center line of the driving cover.

8. The leakage and loosening prevention structure according to claim 6, characterized by The second positioning convex tooth is axially slidably arranged on the second rod segment, and the two ends of the second positioning convex tooth in the sliding direction are respectively provided with a sliding block and a first elastic member, the sliding block is slidably arranged on the second rod segment, and the sliding direction is along the radial direction of the second rod segment; The second rod segment is slidably sleeved on the outer periphery of the first rod segment, the first rod segment is sleeved with a second elastic member, one end of the first rod segment in the second rod segment is provided with a stop block, the second elastic member is limited between the inner wall of the second rod segment and the stop block, one side of the stop block close to the second elastic member is provided with an extrusion rod for extruding the sliding block, and the sliding block is provided with a first inclined surface for extruding the second positioning convex tooth and a second inclined surface for bearing the extrusion of the extrusion rod; The third positioning tooth groove is arranged on the side of the driving cover close to the fixing ring, when the driving cover extrudes the limiting end head to make the elastic telescopic rod elongate, the extruding rod extrudes the second positioning convex tooth through the sliding block to slide in the direction close to the third positioning tooth groove, the second positioning convex tooth is positioned and matched with the third positioning tooth groove, so that the driving cover can stably drive the anti-loose cover to rotate.

9. An electromagnetic pump characterized in that, Use the anti-leakage and anti-loose structure according to any one of claims 1-7.

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