Submersible pump

Abstract

The present disclosure relates to the technical field of submersible pumps, and particularly relates to a submersible pump, a submersible pump comprising a shell, a liquid level float ball switch is arranged in the shell, the shell comprises a frame body component, the liquid level float ball switch comprises: a liquid level adjusting mechanism, which is in sliding connection with the frame body component, a first positioning structure is arranged between the frame body component and the liquid level adjusting mechanism, and the first positioning structure is used for limiting the liquid level adjusting mechanism at a certain height; a connecting rod mechanism, which comprises a guide part and a driving part connected with each other; a first switch matched with the driving part; a float ball, which is located below the liquid level adjusting mechanism, the float ball is in movable connection with the guide part; a mechanical trigger mechanism, which is arranged between the float ball and the liquid level adjusting mechanism, and the mechanical trigger mechanism is used for locking the float ball and the guide part; and a lower stroke limiting piece, which is arranged on the guide part and located below the float ball.

Description

Technical Field

[0001] This disclosure relates to the field of submersible pump technology, and in particular to a submersible pump. Background Technology

[0002] When a submersible pump is working, it needs to be automatically controlled so that it stops working automatically when the water level reaches the upper or lower limit. Currently, some submersible pumps on the market are equipped with a float device. The float is connected to a switch via a connecting rod. When the float rises or falls to a certain position, the switch is pulled to open or close, thereby controlling the water pump. The float level controller is suitable for controlling the liquid level in various containers.

[0003] Chinese patent number 2021222980676 discloses a dual-float liquid level controller, which includes a main body and a boom connected to the main body at one end. A first float is fitted onto the bottom of the boom, and a second float is adjustablely positioned on the boom, located between the first float and the main body. This patent adapts to different liquid level requirements by adjusting the distance between the first and second floats. However, this patent requires manually loosening or tightening adjusting bolts to adjust the positions of the first and second floats. Frequent adjustments to the positions of the first and second floats would severely impact the adjustment efficiency. Utility Model Content

[0004] In view of the shortcomings or problems existing in the prior art, this disclosure provides a submersible pump with high adjustment efficiency and strong versatility.

[0005] The technical solution adopted by this disclosure to solve the above-mentioned technical problem is as follows: a submersible pump, including a housing, wherein a liquid level float switch is disposed within the housing, the housing including a frame component, and the liquid level float switch including:

[0006] A liquid level regulating mechanism is slidably connected to a frame component. A first positioning structure is provided between the frame component and the liquid level regulating mechanism. The first positioning structure is used to limit the liquid level regulating mechanism at a certain height.

[0007] A linkage mechanism, comprising a guide section and a drive section that are interconnected;

[0008] The first switch that cooperates with the drive unit;

[0009] A float is located below the liquid level regulating mechanism, and the float is movably connected to the guide section;

[0010] A mechanical triggering mechanism is provided between the float and the liquid level regulating mechanism, and the mechanical triggering mechanism is used to lock the float and the guide part;

[0011] The lower stroke limiter is located on the guide section and below the float.

[0012] In some embodiments, the mechanical triggering mechanism includes a rolling element, a recessed section on the guide portion, and a contact rod on the float. The liquid level regulating mechanism has a hollow structure, in which the rolling element is disposed, and the recessed section is oriented toward the rolling element. The liquid level regulating mechanism has a clearance groove that allows the contact rod to pass through. The contact rod enters the hollow structure of the liquid level regulating mechanism. As the contact rod moves upward, the rolling element contacts the contact rod and the recessed section respectively, and the float locks with the guide portion.

[0013] As the float rises, the contact rod pushes the rolling element. After the rolling element gets stuck in the recessed section, it contacts both the recessed section and the contact rod, and the rolling element is squeezed. The rolling element is constrained by the recessed section and cannot retract. The radial squeezing force of the rolling element is used to achieve mechanical self-locking, so that the guide part and the rolling element stuck in the recessed section move upward with the float.

[0014] In a preferred embodiment, the recessed section includes a plurality of first arc-shaped indentations continuously arranged along the length of the guide portion. The outline of the first arc-shaped indentation is adapted to the size of the rolling element. The top of the contact rod is provided with an inclined surface, which faces the rolling element. The lower part of the inclined surface is provided with a second arc-shaped indentation adapted to the size of the rolling element. When one side of the rolling element is in contact with the first arc-shaped indentation and the other side is in contact with the second arc-shaped indentation, the float is locked to the guide portion.

[0015] The continuous arrangement of the first arc-shaped concave section creates multiple discrete locking points on the guide section, thus adapting to different starting liquid levels. The inclined surface at the top of the contact rod converts the vertical movement of the contact rod into the radial displacement of the rolling element, allowing the rolling element to smoothly engage in the predetermined position. The arrangement of the first and second arc-shaped concave sections ensures that they form a wrapping contact with the rolling element, preventing accidental slippage of the rolling element after the float locks with the guide section, thereby improving the stability of the structure and the reliability of the operation.

[0016] In some embodiments, the mechanical triggering mechanism includes an external toothed portion disposed on the guide portion, a sliding sleeve, and a contact cylinder disposed on the float. The sliding sleeve is sleeved outside the guide portion and is disposed between the liquid level regulating mechanism and the float. The liquid level regulating mechanism is provided with a first limiting structure, and the sliding sleeve is provided with a second limiting structure. The inner peripheral wall of the sliding sleeve is provided with an internal toothed portion. After the contact cylinder contacts the sliding sleeve, it drives the sliding sleeve to move upward. The sliding sleeve contacts the liquid level regulating mechanism, and the external toothed portion and the internal toothed portion interlock under the action of the first limiting structure and the second limiting structure, locking the float and the guide portion.

[0017] After the contact cylinder and the sliding sleeve come into contact, the sliding sleeve moves upward. When the sliding sleeve moves to the position of the liquid level adjustment mechanism, the first limit structure and the second limit structure cooperate to make the outer teeth and the inner teeth interlock, thereby making the guide part move synchronously with the float and the sliding sleeve, that is, to lock the float and the guide part.

[0018] In a preferred embodiment, the liquid level regulating mechanism includes an actuating block and a sliding block. A hollow structure and a clearance groove are provided on the sliding block, a sliding sleeve is provided between the sliding block and the float, and a first limiting structure is provided on the sliding block. The actuating block includes an actuating part and a connecting part. A first protrusion is provided on one side of the sliding block, and a receiving groove is provided on the first protrusion. The connecting part is at least partially located in the receiving groove. A limiting hole is also provided on the first protrusion, and the limiting hole is located on the side of the receiving groove. A limiting protrusion is provided at the corresponding position of the connecting part. The limiting protrusion cooperates with the limiting hole to limit at least part of the connecting part in the receiving groove.

[0019] The height of the toggle block and the sliding block can be quickly adjusted by the toggle mechanism, thereby adjusting the starting liquid level. The entire adjustment process can be completed without the aid of other tools, simplifying the adjustment procedure. The toggle block slides in the receiving groove through its connecting part, forming a linkage with the sliding block. The engagement of the limiting protrusion and the limiting hole is similar to a "buckle" structure, ensuring the stability of the connection between the connecting part and the sliding block. This engagement method allows for quick disassembly and assembly, facilitating maintenance and replacement of parts.

[0020] In a preferred embodiment, the bottom of the sliding block is provided with two second protrusions, which are symmetrically arranged on both sides of the bottom of the sliding block. The first limiting structure is an arc-shaped guide surface provided on the bottom of the two second protrusions. The second limiting structure is a positioning block provided on both sides of the sliding sleeve, with the end of the positioning block being spherical. The arc-shaped guide surface cooperates with the positioning block to limit the circumferential movement of the sliding sleeve.

[0021] The fit between the arc-shaped guide surface and the spherical end allows the slide sleeve to make slight adaptive adjustments during axial movement. When the slide sleeve rises to the position of the sliding block, the positioning block falls into the predetermined position under the guidance of the arc-shaped guide surface, so that the sliding block and the slide sleeve form a circumferential limit, and the slide sleeve cannot rotate around the axis of the guide part. At this time, the outer tooth part and the inner tooth part interlock, so that the guide part moves synchronously with the float and the slide sleeve.

[0022] In a preferred embodiment, the top of the contact cylinder is provided with multiple actuating protrusions, the bottom of the sliding sleeve is provided with multiple guiding slopes, and a boss is formed at the connection of adjacent guiding slopes. The boss cooperates with the actuating protrusions to limit the circumferential movement of the float.

[0023] The float ensures that it can stably drive the sliding sleeve upward by activating the engagement of the protrusion and the boss.

[0024] In a preferred embodiment, the actuating part includes a base plate and a lever plate, the connecting part and the lever plate are respectively located on both sides of the base plate, a first gap is provided between the base plate and the first protrusion, the frame component includes a first frame and a protruding rib provided on the first frame, the thickness of the protruding rib is adapted to the width of the first gap, the protruding rib is located in the first gap, and the sliding block is located on the inner side of the protruding rib; a first positioning structure is provided on the first frame, and the first positioning structure is located on the outer side of the protruding rib.

[0025] The thickness of the protruding ridge is precisely matched with the first gap, forming a sliding guide channel to prevent the toggle block from shaking during adjustment.

[0026] In a preferred embodiment, the first positioning structure consists of multiple spaced first slots arranged on the movement trajectory of the actuating block. The first slots cooperate with the actuating plate to limit the actuating block to a certain height. The protruding ridge is provided with an upper stop and a lower stop along its axial direction. The actuating block slides between the upper stop and the lower stop along the protruding ridge. The first positioning structure is located between the upper stop and the lower stop.

[0027] The multiple spaced first slots provide multiple discrete positioning points, enabling the toggle block to be precisely positioned at different heights; the upper and lower gear positions limit the maximum sliding range of the toggle block, ensuring that the user adjusts the gear within a safe range.

[0028] In a preferred embodiment, a slide groove is provided on the first frame, a slide block is provided at the top of the guide part, a drive part is provided below the slide block, the slide block is slidably disposed in the slide groove, and a baffle for axially limiting the slide block is provided below the slide groove.

[0029] As the slide moves downward, it comes into contact with the baffle, thus preventing it from moving further downward.

[0030] In a preferred embodiment, a guide block is provided on the slide block, and a guide groove is provided on the side wall of the slide groove. The guide block is slidably disposed in the guide groove, and the guide block and the guide groove cooperate to limit the circumferential movement of the slide block.

[0031] The constraint mechanism formed by the guide block and the guide groove can effectively prevent the slide from moving circumferentially within the groove, enhance the anti-interference ability of the entire structure, and ensure that the guide part can only move axially when lifting and lowering.

[0032] In a preferred embodiment, the sliding block is provided with a first through hole, and the lower end of the guide portion passes through the first through hole so that the sliding block is sleeved on the outside of the guide portion.

[0033] This design allows the sliding block to slide freely along the length of the guide section. When the float rises or falls to a certain position with the liquid level, the guide section will move accordingly. Since the sliding block can slide on the guide section, it will not restrict the movement of the guide section. In addition, the sliding block, which is fitted over the outside of the guide section, provides a certain support and guidance for the guide section, preventing the guide section from shaking or deviating during the lifting and lowering process.

[0034] In a preferred embodiment, the first frame is further provided with a second positioning structure for limiting the liquid level adjustment mechanism at a certain height. The second positioning structure is located between the upper stop and the lower stop, and is located above the first positioning structure. The second positioning structure is a second slot. When the dial is located in the second positioning structure, the sliding block contacts the driving part, and the first switch is in the open state.

[0035] When the dial is in the second positioning structure, the first switch is in the normally open state. In an emergency, the dial can be pushed directly to the second slot to turn on the first switch without the need for step-by-step adjustment.

[0036] In a preferred embodiment, the drive unit triggers the first switch via a magnetic mechanism. The magnetic mechanism includes a base, the first switch is disposed on the base, a bracket is disposed on the base, a magnetic component is disposed on the bracket, and a first magnetic element is disposed at the end of the drive unit. The magnetic component and the first magnetic element interact to cause the bracket to actuate the button of the first switch.

[0037] Compared with existing products, the technical solution of this application can flexibly adjust the liquid level height, allowing users to adjust the position of the liquid level adjustment mechanism according to the actual required liquid level height, making the submersible pump suitable for various working conditions and improving its versatility;

[0038] This application allows for flexible adjustment of the required water level by adjusting the height of the liquid level adjustment mechanism, making operation simple and convenient.

[0039] The first positioning structure ensures that the liquid level adjustment mechanism can be stably limited to the set height, avoiding deviation of the adjustment height due to external vibration and other factors, and ensuring the accuracy of liquid level control.

[0040] The mechanical triggering mechanism is used to lock the float ball with the guide section. Its simple structure ensures the stability and sensitivity of the liquid level float switch triggering. Attached Figure Description

[0041] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0042] Figure 1 This is one of the structural schematic diagrams of a submersible pump disclosed herein;

[0043] Figure 2 This is one of the cross-sectional views of a submersible pump disclosed herein;

[0044] Figure 3 This is a second cross-sectional view of a submersible pump disclosed herein;

[0045] Figure 4 This is one of the structural schematic diagrams of the liquid level float switch disclosed in this publication;

[0046] Figure 5 This is one of the structural schematic diagrams of the linkage mechanism disclosed in this paper;

[0047] Figure 6 This is a sectional view of the frame components disclosed herein;

[0048] Figure 7 This is one of the cross-sectional views of the liquid level float switch disclosed herein;

[0049] Figure 8 This is a cross-sectional view of the float disclosed in this publication;

[0050] Figure 9 This is one of the structural schematic diagrams of the sliding block disclosed herein;

[0051] Figure 10 This is a schematic diagram of the structure of the toggle block disclosed herein;

[0052] Figure 11 This is one of the structural schematic diagrams showing the connection between the toggle element and the sliding block in this disclosure;

[0053] Figure 12 This is the second schematic diagram of the connection between the actuating component and the sliding block disclosed herein;

[0054] Figure 13 This is the second schematic diagram of the sliding block disclosed herein;

[0055] Figure 14 This is the third schematic diagram of the sliding block disclosed herein;

[0056] Figure 15 This is the fourth schematic diagram of the sliding block structure disclosed herein;

[0057] Figure 16 This is the second schematic diagram of the liquid level float switch disclosed herein;

[0058] Figure 17 This is the second cross-sectional view of the liquid level float switch disclosed herein;

[0059] Figure 18 This is a schematic diagram of the connection between the liquid level regulating mechanism and the linkage mechanism disclosed herein;

[0060] Figure 19 This is a schematic diagram of the structure of the float disclosed in this publication;

[0061] Figure 20 This is one of the structural schematic diagrams of the sliding sleeve disclosed in this paper;

[0062] Figure 21 This is the second schematic diagram of the structure of the sliding sleeve disclosed herein;

[0063] Figure 22 This is a cross-sectional view of the sliding sleeve disclosed herein;

[0064] Figure 23 This is a schematic diagram of the structure of the magnetic mechanism disclosed herein;

[0065] Figure 24 This is a schematic diagram of the structure of the support structure disclosed herein.

[0066] Explanation of reference numerals in the attached figures:

[0067] 1. Housing; 3. Liquid level regulating mechanism; 31. Sliding block; 310. First protrusion; 3101. Receiving groove; 3102. Limiting hole; 311. Second protrusion; 3111. Arc-shaped guide surface; 312. Slide rail; 313. Stop block; 32. Actuating block; 320. Actuating part; 3201. Base plate; 3202. Actuating plate; 321. Connecting part; 3211. Limiting protrusion; 33. First gap; 11. Guide part; 110. First arc-shaped concave section; 111. Helical tooth section; 21. Float; 210. Contact rod; 2101. Second arc-shaped concave section; 211. Contact cylinder; 2111. Actuating protrusion; 41. Drive unit; 51. Magnetic mechanism; 510. Base; 511. Bracket; 5111. Contact plate; 5112. First connecting plate; 5113. Second connecting plate; 5114. Third connecting plate; 61. Slide; 610. Guide block; 71. Frame component; 710. First frame; 7101. First slot; 7102. Second slot; 7103. Baffle; 7104. Slide groove; 7105. Guide groove; 100. First switch; 200. Lower stroke limiter; 300. Rolling element; 400. Sliding sleeve; 4001. Positioning block; 4002. Guide slope; 4003. Claw. Detailed Implementation

[0068] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0069] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.

[0070] Please refer to Figures 1-4 and Figure 16As shown, currently available submersible pumps often present some inconvenience when adjusting the starting water level. This application provides a submersible pump that facilitates the adjustment of the starting water level, comprising a housing 1, which includes a frame component 71. A liquid level float switch is installed inside the housing 1, comprising a mechanical triggering mechanism, a first switch 100, and a liquid level adjusting mechanism 3 slidably connected to the frame component 71. A first positioning structure is provided between the frame component 71 and the liquid level adjusting mechanism 3, which is used to limit the liquid level adjusting mechanism 3 to a certain height. The pump also includes a linkage mechanism, a float 21, and a lower stroke limiting component 200. The linkage mechanism includes a guide portion 11 and a drive portion 41 connected to each other. The first switch 100 is located on one side of the drive portion 41 and cooperates with the drive portion 41. The float 21 is slidably connected to the guide portion 11. 1. The float 21 is located above the level regulating mechanism 3 and below the level regulating mechanism 3. The lower stroke limiter 200 is located on the guide part 11 and below the float 21. The mechanical triggering mechanism is located between the float 21 and the level regulating mechanism 3. The mechanical triggering mechanism is used to lock the float 21 and the guide part 11. Specifically, when the level rises, the float 21 contacts the mechanical triggering mechanism and works with the level regulating mechanism 3 to trigger the mechanical triggering mechanism. The float 21 and the guide part 11 are locked. The float 21 drives the guide part 11 to move upward together, and the drive part 41 triggers the first switch 100. When the level falls, the float 21 slides down, the float 21 disengages from the mechanical triggering mechanism, the float 21 and the guide part 11 are unlocked, the float 21 slides down to contact the lower stroke limiter 200, the float 21 drives the guide part 11 to move downward together, and the first switch 100 is reset. The technical solution provided in this application can flexibly adjust the liquid level of the submersible pump's starting water level, allowing users to adjust the position of the liquid level adjustment mechanism 3 according to the actual required liquid level, making the submersible pump suitable for various working conditions and improving its versatility. The operation of the liquid level adjustment mechanism 3 in this application is simple and convenient, especially suitable for submersible pumps that require frequent adjustment of the starting water level. The mechanical triggering mechanism in this application achieves the locking and unlocking of the float 21 and the guide part 11 under the joint action of the float 21 and the liquid level adjustment mechanism 3. The simple structure ensures the stability and sensitivity of the float switch triggering.

[0071] It should be noted that the function of the lower stroke limiter 200 in this application is to limit the float 21, so that when the float 21 slides down to the position of the lower stroke limiter 200, it can drive the guide part 11 to move down together. Therefore, the lower stroke limiter 200 in this application includes, but is not limited to, bolts that pass through the guide part 11, or protrusions integrally formed with the guide part 11, or protrusions that are detachably connected to the guide part 11. This application does not limit the specific structure of the lower stroke limiter 200.

[0072] Please refer to the following: Figures 9-13As shown, the liquid level adjustment mechanism 3 further includes an actuating block 32 and a sliding block 31. The actuating block 32 includes an integrally formed actuating part 320 and a connecting part 321. A first protrusion 310 is provided on one side of the sliding block 31. A receiving groove 3101 is provided on the first protrusion 310. The connecting part 321 is at least partially located in the receiving groove 3101. A limiting hole 3102 is also provided on the first protrusion 310. The limiting hole 3102 is located on the side of the receiving groove 3101. A limiting protrusion 3211 is provided at the corresponding position of the connecting part 321. The limiting protrusion 3211 cooperates with the limiting hole 3102 to limit the connecting part 321 at least partially in the receiving groove 3101. The height of the toggle block 32 and the sliding block 31 can be quickly adjusted by pushing (or flicking or sliding) the toggle part 320, thereby adjusting the starting liquid level. The entire adjustment process can be completed without the aid of other tools, simplifying the adjustment process. The toggle block 32 slides in the receiving groove 3101 through its connecting part 321, forming a linkage with the sliding block 31 and driving the sliding block 31 to move together. The engagement of the limiting protrusion 3211 and the limiting hole 3102 is similar to a "buckle" structure, ensuring the stability of the connection between the connecting part 321 and the sliding block 31. In addition, this engagement method allows for quick disassembly and assembly, facilitating maintenance and replacement of parts.

[0073] Specifically, the actuating part 320 includes a base plate 3201 and a lever 3202. The connecting part 321 and the lever 3202 are located on opposite sides of the base plate 3201. A first gap 33 is provided between the base plate 3201 and the first protrusion 310. It should be noted that the horizontal dimension of the connecting part 321 is greater than the depth of the receiving groove 3101. After the connecting part 321 enters the receiving groove 3101, the first gap 33 is naturally formed between the base plate 3201 and the first protrusion 310. The frame component 71 includes a first frame 710 and a protruding rib provided on the first frame 710. The thickness of the protruding rib is adapted to the width of the first gap 33. The protruding rib is located in the first gap 33. The sliding block 31 is located inside the protruding rib, and the actuating part 320 is located outside the protruding rib, which facilitates the user to adjust the actuating block 32. It should be noted that the outer side of the convex ridge is exposed to the external environment, while the inner side of the convex ridge is located inside the submersible pump housing 1. The actuating part 320 needs to be exposed outside the pump body for user adjustment; therefore, the actuating part 320 is located on the outer side of the convex ridge. To further facilitate user adjustment, the lever 3202 is configured as a plate perpendicular to the sliding direction of the actuating block 32. The first positioning structure is provided on the first frame 710 and is located on the outer side of the convex ridge. The thickness of the convex ridge precisely matches the first gap 33, forming a sliding guide channel to prevent the actuating block 32 from shaking during adjustment and to ensure the stability of the actuating block 32 and the sliding block 31 during sliding.

[0074] like Figure 6 and Figure 17As shown, preferably, the first positioning structure consists of multiple spaced first slots 7101 arranged on the movement trajectory of the actuating block 32. The first slots 7101 cooperate with the lever 3202 to limit the actuating block 32 to a certain height. The multiple spaced first slots 7101 provide multiple discrete positioning points, enabling the actuating block 32 to be positioned quickly and accurately at different heights. When the lever 3202 engages with the first slot 7101, it produces a "click" sound or a change in resistance, providing tactile feedback to the user. Of course, the first positioning structure can also be a damped positioning structure.

[0075] Specifically, the convex ridge has an upper stop portion and a lower stop portion along its axial direction, and the actuating block 32 slides between the upper stop portion and the lower stop portion along the convex ridge; the first positioning structure is located between the upper stop portion and the lower stop portion. Specifically, the upper stop portion and the lower stop portion include, but are not limited to, block-shaped, plate-shaped, or strip-shaped structures, as long as they can serve a limiting function. The arrangement of the upper stop portion and the lower stop portion ensures that the convex ridge provides two limiting points for the actuating block 32 at both ends of its axial direction, limiting the maximum sliding range of the actuating block 32 and ensuring that the user adjusts the gear within a safe range.

[0076] The first frame 710 is provided with a slide groove 7104, and a slide block 61 is provided at the top of the guide part 11. The drive part 41 is located below the slide block 61. The slide block 61 is slidably disposed in the slide groove 7104. A baffle 7103 is provided below the slide groove 7104 to limit the axial movement of the slide block 61. The slide groove 7104 provides a sliding space for the slide block 61 to slide up and down, and the slide groove 7104 also plays a guiding role to a certain extent. When the slide block 61 moves downward, it contacts the baffle 7103, and the baffle 7103 prevents it from moving further downward. The baffle 7103 limits the maximum downward sliding distance of the guide part 11. Only when the guide part 11 slides up and down within this range can the drive part 41 effectively trigger the first switch 100.

[0077] Please refer to Figure 5 , Figure 7 , Figure 17 and Figure 18 As shown, to ensure the stability of the guide part 11 during sliding, a guide block 610 is provided on the slide block 61, and a guide groove 7105 along the sliding direction of the guide part 11 is provided on the side wall of the slide groove 7104. The guide block 610 is slidably disposed in the guide groove 7105, and the guide block 610 and the guide groove 7105 cooperate to limit the circumferential movement of the slide block 61. The constraint mechanism formed by the cooperation of the guide block 610 and the guide groove 7105 can effectively prevent the slide block 61 from moving circumferentially within the slide groove 7104, enhance the anti-interference ability of the entire structure, and thus ensure that the guide part 11 can only move axially during lifting and lowering.

[0078] The sliding block 31 is provided with a first through hole, and the lower end of the guide part 11 passes through the first through hole so that the sliding block 31 is sleeved on the outside of the guide part 11. This arrangement allows the sliding block 31 to slide freely along the length direction of the guide part 11 (the direction of movement of the guide part 11). When the float 21 rises or falls to a certain position with the liquid level, the guide part 11 will move up and down accordingly. Since the sliding block 31 can slide on the guide part 11, the sliding block 31 will not restrict the movement of the guide part 11. In addition, the sliding block 31 sleeved on the outside of the guide part 11 provides a certain support and guidance for the guide part 11, preventing the guide part 11 from shaking or deviating during the raising and lowering process.

[0079] like Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, in one embodiment of this disclosure, the mechanical triggering mechanism includes a rolling element 300, a recessed section on the guide portion 11, and a contact rod 210 on the float 21. The sliding block 31 has a hollow structure, the rolling element 300 is disposed in the hollow structure, the recessed section is disposed facing the rolling element 300, and the bottom of the sliding block 31 is provided with a clearance groove that allows the contact rod 210 to pass through. As the float 21 slides upward, the contact rod 210 enters the hollow structure of the sliding block 31. The contact rod 210 continues to move upward with the float 21, and the rolling element 300 contacts the contact rod 210 and the recessed section respectively. The float 21 is locked to the guide portion 11. When the contact rod 210 rises with the float 21, it pushes the rolling element 300. After the rolling element 300 is locked in the recessed section, it contacts both the recessed section and the contact rod 210, and the rolling element 300 is compressed. The rolling element 300 is constrained by the recessed section and cannot retract. The radial compression force of the rolling element 300 achieves mechanical self-locking, thereby causing the guide part 11 and the rolling element 300 locked in the recessed section to move upward with the float 21. It can be understood that during the process of the guide part 11 and the rolling element 300 moving upward with the float 21, since the actuating block 32's actuating plate 3202 is locked in the first slot 7101, the actuating block 32 and the sliding block 31 do not move upward with the guide part 11 and are basically in a stationary state. As the float 21, the guide part 11 and the rolling element 300 move upward, the contact rod 210 or the rolling element 300 located in the hollow structure gradually touches the inner wall of the top of the sliding block 31. At this time, the guide part 11 stops moving upward. It should be noted that before or when the contact rod 210 or the rolling element 300 located in the hollow structure touches the inner wall of the top of the sliding block 31 (before or just after the guide part 11 stops moving upward), the drive part 41 triggers the first switch 100, and the submersible pump starts to work. In this application, the rolling element 300 is a ball, roller, or needle roller.

[0080] Specifically, the recessed section includes several first arc-shaped recesses 110 continuously arranged along the length of the guide portion 11. The outline of the first arc-shaped recesses 110 is adapted to the size of the rolling element 300. The top of the contact rod 210 is provided with an inclined surface facing the rolling element 300. The lower part of the inclined surface is provided with a second arc-shaped recess 2101 adapted to the size of the rolling element 300. When one side of the rolling element 300 is in contact with the first arc-shaped recess 110 and the other side is in contact with the second arc-shaped recess 2101, the float 21 is locked to the guide portion 11. The continuous arrangement of the first arc-shaped concave portion 110 creates multiple discrete locking points on the guide portion 11, thus adapting to different starting liquid levels. The inclined surface at the top of the contact rod 210 converts the vertical movement of the contact rod 210 into the radial displacement of the rolling element 300, allowing the rolling element 300 to smoothly engage in the predetermined position. The arrangement of the first arc-shaped concave portion 110 and the second arc-shaped concave portion 2101 ensures that they form a wrapping contact with the rolling element 300, preventing accidental slippage of the rolling element 300 after the float 21 locks with the guide portion 11, thereby improving the stability of the structure and the reliability of operation. It can be understood that when the positions of the actuating block 32 and the sliding block 31 are fixed, the rolling element 300 is in a locked state during the upward movement of the float 21 (after the float 21 locks with the guide portion 11), and it will not slide from one first arc-shaped concave portion 110 to another.

[0081] like Figures 13-19 and Figure 22 As shown, in another embodiment of this disclosure, the mechanical triggering mechanism includes an external toothed portion disposed on the guide portion 11, a sliding sleeve 400, and a contact cylinder 211 disposed on the float 21. The sliding sleeve 400 is sleeved on the outside of the guide portion 11 and is disposed between the sliding block 31 and the float 21. The sliding block 31 is provided with a first limiting structure, and the sliding sleeve 400 is provided with a second limiting structure. The inner peripheral wall of the sliding sleeve 400 is provided with an internal toothed portion. After the contact cylinder 211 contacts the sliding sleeve 400, it drives the sliding sleeve 400 to move upward. The sliding sleeve 400 contacts the sliding block 31, and the external toothed portion and the internal toothed portion interlock under the action of the first limiting structure and the second limiting structure, thus locking the float 21 and the guide portion 11. After the contact cylinder 211 and the sliding sleeve 400 come into contact, the sliding sleeve 400 moves upward. When the sliding sleeve 400 moves to the position of the sliding block 31, the first limiting structure and the second limiting structure cooperate to make the outer tooth and the inner tooth interlock, thereby making the guide part 11, the float 21 and the sliding sleeve 400 move synchronously, that is, to lock the float 21 and the guide part 11.

[0082] Specifically, the outer toothed portion consists of two helical tooth segments 111 disposed on the outer peripheral wall of the guide portion 11. These two helical tooth segments 111 are located on two sides of the guide portion 11, and each segment consists of several helical teeth continuously arranged along the axial direction of the guide portion 11. The inner toothed portion consists of two hooks 4003 disposed on the inner peripheral wall of the sliding sleeve 400. The two hooks 4003 are positioned opposite each other on the inner peripheral wall of the sliding sleeve 400. After the first and second limiting structures cooperate, the hooks 4003 and the helical tooth segments 111 engage with each other, locking the sliding sleeve 400 and the guide portion 11. The guide portion 11 moves upward along with the sliding sleeve 400, meaning the guide portion 11 moves synchronously with the float 21 and the sliding sleeve 400, thus locking the float 21 to the guide portion 11.

[0083] The bottom of the sliding block 31 is provided with two second protrusions 311, which are symmetrically arranged on both sides of the bottom of the sliding block 31. The first limiting structure is an arc-shaped guide surface 3111 provided at the bottom of the two second protrusions 311. The second limiting structure is a positioning block 4001 provided on both sides of the sliding sleeve 400. The end of the positioning block 4001 is spherical. The arc-shaped guide surface 3111 cooperates with the positioning block 4001 to limit the circumferential movement of the sliding sleeve 400, so that the outer teeth and the inner teeth are stably engaged together. The engagement between the arc-shaped guide surface 3111 and the spherical end allows the slide sleeve 400 to make slight adaptive adjustments during axial movement. When the slide sleeve 400 rises to the position of the sliding block 31, the positioning block 4001 falls into the predetermined position under the guidance of the arc-shaped guide surface 3111, so that the sliding block 31 and the slide sleeve 400 form a circumferential limit, so that the internal teeth on the slide sleeve 400 are kept at a specific angle, thereby making the internal teeth and external teeth mesh, and the slide sleeve 400 cannot rotate around the axis of the guide part 11. At this time, the guide part 11 moves synchronously with the float 21 and the slide sleeve 400.

[0084] Please continue reading. Figure 14 , Figure 15 , Figure 20 and Figure 21As shown, it should be noted that two arc-shaped guide surfaces 3111 extend upward along the axial direction of the guide portion 11, with slides 312 extending upward respectively. One slide 312 is located on the outer side of the sliding block 31, and the other slide 312 is located on the inner wall of the sliding block 31. Under the action of the float 21, the sliding sleeve 400 rises to contact the sliding block 31, and then spirals upward. The positioning block 4001 moves from the lowest point of the arc-shaped guide surface 3111 to the highest point, and then enters the slide 312. During the process of the positioning block 4001 moving from the lowest point of the arc-shaped guide surface 3111 to the highest point, the inner teeth and outer teeth gradually mesh and lock together. At this time, the sliding sleeve 400 and the guide portion 11 are stably locked together. Then, under the action of the float 21, the positioning block 4001 continues to rise along the slide 312. It can be understood that during the process of the positioning block 4001 rising along the slide 312, the guide portion 11 rises together with the positioning block 4001. A stop block 313 is provided on the top of the sliding block 31. The positioning block 4001 rises along the slide rail 312 until it contacts the stop block 313, and the sliding sleeve 400 and the guide part 11 stop moving upward. It should be noted that before the positioning block 4001 contacts the stop block 313 or when the positioning block 4001 contacts the stop block 313 (before the guide part 11 stops moving upward or just after the guide part 11 stops moving upward), the drive part 41 triggers the first switch 100, and the submersible pump starts to work.

[0085] Preferably, the top of the contact cylinder 211 is provided with multiple actuating protrusions 2111, and the bottom of the sliding sleeve 400 is provided with multiple guide slopes 4002. A boss is formed at the connection between adjacent guide slopes 4002. The boss cooperates with the actuating protrusions 2111 to limit the circumferential movement of the float 21. Through the cooperation between the actuating protrusions 2111 and the boss, the float 21 ensures that it can stably drive the sliding sleeve 400 to move upward.

[0086] Specifically, the first frame 710 is also equipped with a second positioning structure for limiting the liquid level adjustment mechanism 3 to a certain height. The second positioning structure is located between the upper and lower stop parts and is positioned above the first positioning structure. Specifically, the second positioning structure is a second slot 7102. When the lever 3202 is located in the second positioning structure, the top of the sliding block 31 contacts the drive part 41, and the first switch 100 is in the open state. In addition, when the lever 3202 is located in the second positioning structure, the upper end of the connecting part 321 contacts the upper stop part. At this time, the lever 32 can no longer be adjusted upward. It can be understood that the first positioning structure can be regarded as the adjustment range of the starting water level. The required starting water level height is obtained by moving the lever 32 axially up and down. The first positioning structure can be regarded as the normally open position of the submersible pump for use in special needs. When the dial 3202 is in the second positioning structure, the first switch 100 is in the normally open state. In an emergency, the dial 3202 can be pushed directly to the second slot 7102 to directly turn on the first switch 100 without the need for step-by-step adjustment.

[0087] Please refer to Figure 23 and Figure 24As shown, the driving unit 41 triggers the first switch 100 via a magnetic mechanism 51. The magnetic mechanism 51 includes a base 510, the first switch 100 is disposed on the base 510, a bracket 511 is disposed on the base 510, a magnetic component is disposed on the bracket 511, and a first magnetic element is disposed at the end (free end) of the driving unit 41. The magnetic component interacts with the first magnetic element to cause the bracket 511 to actuate the button of the first switch 100. Specifically, the bracket 511 is hinged to the base 510. The bracket 511 includes a touch plate 5111 and a connecting plate assembly. The connecting plate assembly includes a first connecting plate 5112, a second connecting plate 5113, and a third connecting plate 5114. The first connecting plate 5112 and the second connecting plate 5113 are parallel to and opposite to the third connecting plate 5114. The touch plate 5111 is connected to the third connecting plate 5114. The first switch 100 is disposed on one side of the touch plate 5111, and the button of the first switch 100 is disposed close to the touch plate 5111. The first connecting plate 5112 is provided with a first mounting base, and the second connecting plate 5113 is provided with a second mounting base. The magnetic assembly includes a second magnetic element and a third magnetic element. The second magnetic element is disposed in the first mounting base, and the third magnetic element is disposed in the second mounting base. During the up-and-down movement of the drive unit 41 with the guide unit 11, the free end of the drive unit 41 is always located between the first connecting plate 5112 and the second connecting plate 5113. In this way, it can be ensured that after the drive unit 41 rises to a certain height, the first magnetic element can interact with the second magnetic element and the third magnetic element respectively. More specifically, when the drive unit 41 rises to a certain height, the free end of the drive unit 41 is basically located between the first connecting plate 5112 and the second connecting plate 5113 in the horizontal direction. The second magnetic element attracts the first magnetic element, and the third magnetic element repels the first magnetic element, thereby causing the bracket 511 to rotate around the hinge axis. The rotation of the bracket 511 causes the touch plate 5111 to press the button of the first switch 100, and the float switch is activated. The float 21 slides down to contact the lower travel limit member 200. The float 21 drives the guide part 11 to move downward, and the drive part 41 moves downward as well. The force between the first magnetic element and the magnetic assembly gradually disappears, and the button of the first switch 100 resets under its own elastic force. The bracket 511 rotates to its original position (reset), and the float switch stops working. It should be noted that the first magnetic element, the second magnetic element, and the third magnetic element are all magnets. Magnets have two magnetic poles, namely the south pole (S pole) and the north pole (N pole). Like poles repel and unlike poles attract. This is the basic magnetism of magnets. The statement that "the second magnetic element attracts the first magnetic element and the third magnetic element repels the first magnetic element" involves the setting of the magnetic poles of the magnets, which is common knowledge to those skilled in the art and will not be elaborated here.

[0088] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A submersible pump, comprising a housing (1), wherein a liquid level float switch is disposed within the housing (1), and the housing (1) includes a frame component (71), characterized in that, The liquid level float switch includes: The liquid level regulating mechanism (3) is slidably connected to the frame component (71). A first positioning structure is provided between the frame component (71) and the liquid level regulating mechanism (3). The first positioning structure is used to limit the liquid level regulating mechanism (3) at a certain height. The linkage mechanism includes a guide (11) and a drive (41) that are connected to each other. A first switch (100) that cooperates with the drive unit (41); A float (21) is located below the liquid level regulating mechanism (3), and the float (21) is movably connected to the guide (11); A mechanical triggering mechanism is provided between the float (21) and the liquid level regulating mechanism (3), and the mechanical triggering mechanism is used to lock the float (21) and the guide (11); The lower stroke limiter (200) is provided on the guide (11) and located below the float (21).

2. The submersible pump according to claim 1, characterized in that, The mechanical triggering mechanism includes a rolling element (300), a recessed section on the guide (11), and a contact rod (210) on the float (21). The liquid level regulating mechanism (3) is provided with a hollow structure. The rolling element (300) is located in the hollow structure. The recessed section is located towards the rolling element (300). The liquid level regulating mechanism (3) is provided with a clearance groove that allows the contact rod (210) to pass through. The contact rod (210) enters the hollow structure of the liquid level regulating mechanism (3). As the contact rod (210) moves upward, the rolling element (300) contacts the contact rod (210) and the recessed section respectively. The float (21) is locked to the guide (11).

3. The submersible pump according to claim 1, characterized in that, The mechanical triggering mechanism includes an external toothed part, a sliding sleeve (400), and a contact cylinder (211) on the float (21). The sliding sleeve (400) is sleeved on the outside of the guide part (11) and is located between the liquid level regulating mechanism (3) and the float (21). The liquid level regulating mechanism (3) is provided with a first limiting structure, and the sliding sleeve (400) is provided with a second limiting structure. The inner peripheral wall of the sliding sleeve (400) is provided with an internal toothed part. After the contact cylinder (211) contacts the sliding sleeve (400), it drives the sliding sleeve (400) to move upward. The sliding sleeve (400) contacts the liquid level regulating mechanism (3). The external toothed part and the internal toothed part interlock under the action of the first limiting structure and the second limiting structure, and the float (21) locks with the guide part (11).

4. The submersible pump according to claim 2 or 3, characterized in that, The liquid level regulating mechanism (3) includes an actuating block (32) and a sliding block (31). A hollow structure and a clearance groove are provided on the sliding block (31). A sliding sleeve (400) is provided between the sliding block (31) and the float (21). A first limiting structure is provided on the sliding block (31). The actuating block (32) includes an actuating part (320) and a connecting part (321). A first protrusion (310) is provided on one side of the sliding block (31), and a receiving groove is provided on the first protrusion (310). 3101), the connecting part (321) is at least partially located in the receiving groove (3101), and the first protrusion (310) is also provided with a limiting hole (3102), the limiting hole (3102) is located on the side of the receiving groove (3101), and a limiting protrusion (3211) is provided at the corresponding position of the connecting part (321). The limiting protrusion (3211) cooperates with the limiting hole (3102) to limit the connecting part (321) at least partially in the receiving groove (3101).

5. The submersible pump according to claim 2, characterized in that, The recessed section includes several first arc-shaped indentations (110) continuously arranged along the length of the guide (11). The outline of the first arc-shaped indentation (110) is adapted to the size of the rolling body (300). The top of the contact rod (210) is provided with an inclined surface, which is set towards the rolling body (300). The lower part of the inclined surface is provided with a second arc-shaped indentation (2101) adapted to the size of the rolling body (300). When one side of the rolling body (300) is in contact with the first arc-shaped indentation (110) and the other side is in contact with the second arc-shaped indentation (2101), the float (21) is locked to the guide (11).

6. The submersible pump according to claim 3, characterized in that, The top of the contact cylinder (211) is provided with multiple actuating protrusions (2111), and the bottom of the sliding sleeve (400) is provided with multiple guide slopes (4002). A boss is formed at the connection of adjacent guide slopes (4002). The boss cooperates with the actuating protrusions (2111) to limit the circumferential movement of the float (21).

7. The submersible pump according to claim 4, characterized in that, The sliding block (31) is provided with a first through hole, and the lower end of the guide part (11) passes through the first through hole so that the sliding block (31) is sleeved on the outside of the guide part (11).

8. The submersible pump according to claim 4, characterized in that, The bottom of the sliding block (31) is provided with two second protrusions (311), which are symmetrically arranged on both sides of the bottom of the sliding block (31). The first limiting structure is an arc-shaped guide surface (3111) provided at the bottom of the two second protrusions (311). The second limiting structure is a positioning block (4001) provided on both sides of the sliding sleeve (400). The end of the positioning block (4001) is spherical. The arc-shaped guide surface (3111) cooperates with the positioning block (4001) to limit the circumferential movement of the sliding sleeve (400).

9. The submersible pump according to claim 4, characterized in that, The actuating part (320) includes a base plate (3201) and a dial plate (3202). The connecting part (321) and the dial plate (3202) are respectively located on both sides of the base plate (3201). A first gap (33) is provided between the base plate (3201) and the first protrusion (310). The frame member (71) includes a first frame (710) and a protruding rib provided on the first frame (710). The thickness of the protruding rib is adapted to the width of the first gap (33). The protruding rib is located in the first gap (33). The sliding block (31) is located inside the protruding rib. A first positioning structure is provided on the first frame (710) and is located outside the protruding rib.

10. The submersible pump according to claim 9, characterized in that, The first positioning structure consists of multiple spaced first slots (7101), which are arranged on the movement trajectory of the actuating block (32). The first slots (7101) cooperate with the lever (3202) to limit the actuating block (32) at a certain height. The protruding ridge is provided with an upper stop and a lower stop along its axial direction. The actuating block (32) slides between the upper stop and the lower stop along the protruding ridge. The first positioning structure is located between the upper stop and the lower stop.

11. The submersible pump according to claim 10, characterized in that, The first frame (710) is also provided with a second positioning structure for limiting the liquid level adjustment mechanism (3) at a certain height. The second positioning structure is located between the upper stop and the lower stop, and the second positioning structure is located above the first positioning structure. The second positioning structure is a second slot (7102). When the dial plate (3202) is located in the second positioning structure, the sliding block (31) contacts the drive part (41), and the first switch (100) is in the open state.

12. The submersible pump according to claim 9, characterized in that, The first frame (710) is provided with a slide groove (7104), the top of the guide part (11) is provided with a slide block (61), the drive part (41) is provided below the slide block (61), the slide block (61) is slidably disposed in the slide groove (7104), and a baffle (7103) for axially limiting the slide block (61) is provided below the slide groove (7104).

13. The submersible pump according to claim 12, characterized in that, A guide block (610) is provided on the slide (61), and a guide groove (7105) is provided on the side wall of the slide groove (7104). The guide block (610) is slidably disposed in the guide groove (7105). The guide block (610) and the guide groove (7105) cooperate to limit the circumferential movement of the slide (61).

14. The submersible pump according to claim 1, characterized in that, The drive unit (41) triggers the first switch (100) through a magnetic mechanism (51). The magnetic mechanism (51) includes a base (510), the first switch (100) is disposed on the base (510), a bracket (511) is disposed on the base (510), a magnetic component is disposed on the bracket (511), and a first magnetic element is disposed at the end of the drive unit (41). The magnetic component interacts with the first magnetic element to make the bracket (511) touch the button of the first switch (100).

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