Automatic pump

Abstract

The utility model provides an automatic pump which comprises a pump body, a driving assembly and a control assembly, the pump body is provided with a pump cavity and a floating cavity which are separated from each other, the driving assembly comprises an impeller located in the pump cavity and a motor driving the impeller to rotate, and the control assembly comprises a floating piece located in the floating cavity and a control circuit board electrically connected with the motor. The floating part is provided with a first position and a second position which are different in horizontal height, when the floating part is located at the first position and the second position, the floating part magnetically triggers a control signal of the control circuit board, the pump body further comprises a separation structure, and the separation structure is located between the floating part and the control circuit board; a separation structure is arranged between the floating part and the control circuit board, so that the floating part can trigger a control signal without being in contact with the control circuit board, the condition of poor contact or difficulty in separation is avoided, and the floating part is ensured to accurately trigger the control signal of the control circuit board.

Description

Technical Field

[0001] This utility model relates to the field of water pumps, and more particularly to an automatic pump. Background Technology

[0002] An automatic pump is a liquid transport device designed based on the mechanical principle of a float. The floating component moves up and down using changes in water level, triggering a control circuit board to start and stop the motor. In related technologies, the floating component and the control circuit board use direct contact to trigger control signals, such as controlling the motor to start or stop.

[0003] However, since the movement of the floating component caused by changes in water level is irregular, it is very easy to cause poor contact or difficulty in detaching the floating component from the control circuit board, which in turn makes it impossible for the floating component to accurately trigger the control signal of the control circuit board. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic pump that ensures the floating component accurately triggers the control signal of the control circuit board.

[0005] To achieve one of the above-mentioned objectives, one embodiment of this utility model provides an automatic pump, comprising:

[0006] The pump body has a pump chamber and a floating chamber that are separated from each other;

[0007] The drive assembly includes an impeller located within the pump chamber and a motor that drives the impeller to rotate;

[0008] The control component includes a floating element located within a floating cavity and a control circuit board electrically connected to a motor. The floating element has a first position and a second position with different horizontal heights. In the first position and the second position, the floating element magnetically triggers a control signal from the control circuit board.

[0009] The pump body also includes a partition structure located between the floating component and the control circuit board.

[0010] As a further improvement of one embodiment of this utility model, the control circuit board is located inside the pump cavity or the floating cavity.

[0011] As a further improvement of one embodiment of the present invention, the partition structure is located inside the floating cavity and divides the floating cavity into a first cavity and a second cavity, the floating component is located inside the first cavity, and the control circuit board is located inside the second cavity.

[0012] As a further improvement of one embodiment of the present invention, the pump body includes a pump casing forming a pump cavity and a control cover. The partition structure is connected to the control cover. The floating cavity is formed by the pump casing and the control cover. The floating member has a first end wall opposite to the pump casing and a second end wall away from the first end wall. The control cover has a side plate opposite to the second end wall. The first end wall is configured with an arcuate structure that matches the pump casing, and / or the second end wall is configured with an arcuate structure that matches the side plate.

[0013] As a further improvement of one embodiment of the present invention, the automatic pump further includes a positioning structure for slidingly engaging the floating component with the pump body. The positioning structure includes a positioning block disposed on one of the inner wall of the floating cavity and the outer wall of the floating component, and a positioning groove disposed on the other of the inner wall of the floating cavity and the outer wall of the floating component. The sliding engagement direction of the positioning structure is set at a certain angle to the horizontal direction.

[0014] As a further improvement of one embodiment of the present invention, the control circuit board has a first sensing element and a second sensing element, the horizontal height of the first sensing element is higher than the horizontal height of the second sensing element, and the arrangement direction of the first sensing element and the second sensing element is parallel to the sliding engagement direction of the positioning structure.

[0015] As a further improvement of one embodiment of the present invention, the floating member has a magnetic part. In the first position, the magnetic part and the first sensing element are located on opposite sides of the separation structure along the horizontal direction. In the second position, the magnetic part and the second sensing element are located on opposite sides of the separation structure along the horizontal direction.

[0016] As a further improvement of one embodiment of this utility model, the floating member has a first end wall and a second end wall disposed opposite to each other, the pump body includes a pump housing and a control cover, the positioning block is disposed on the first end wall, and the positioning groove is disposed on the pump housing; and / or,

[0017] The positioning block is disposed on the second end wall, and the positioning groove is disposed on the control cover.

[0018] As a further improvement of one embodiment of the present invention, the control housing includes a housing connected to the pump housing and an insert plate. The housing has an installation port that exposes the floating cavity, and the insert plate is detachably connected to the housing and covers the installation port.

[0019] As a further improvement of one embodiment of the present invention, the control housing has a communication port connected to the floating cavity, and the communication port is disposed on the housing and / or the insert plate.

[0020] Compared with the prior art, in the embodiments of this utility model, there is a separation structure between the floating component and the control circuit board, so that the floating component can trigger the control signal without contacting the control circuit board, thereby avoiding poor contact or difficulty in detachment, and ensuring that the floating component accurately triggers the control signal of the control circuit board. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of an automatic pump according to one embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A cross-sectional diagram of the automatic pump from right to left;

[0023] Figure 3 yes Figure 1 A partial schematic diagram of the cross-section of the automatic pump from front to back;

[0024] Figure 4 yes Figure 1 A partially exploded view of the automatic pump.

[0025] Figure 5 yes Figure 1 A partial schematic diagram of the cross-section of the automatic pump from top to bottom;

[0026] Figure 6 This is an exploded view of the control cover in one embodiment of the present invention;

[0027] Figure 7 This is a three-dimensional schematic diagram of the floating component in one embodiment of the present invention. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0029] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0030] refer to Figures 1 to 7 As shown, a preferred embodiment of the present invention provides an automatic pump, which can be configured as a tarpaulin pump and is a device for pumping out water accumulated on (inside) flexible objects such as tarpaulins, rain tarpaulins or swimming pool tarpaulins.

[0031] like Figure 1As shown, an automatic pump includes a pump body 10, a drive assembly, and a control assembly. In this embodiment, both the drive assembly and the control assembly are mounted on the pump body 10.

[0032] In some embodiments, in conjunction with reference Figure 2 As shown, the pump body 10 has a pump chamber 101 and a floating chamber 102 that are separated from each other.

[0033] In this embodiment, the pump chamber 101 and the floating chamber 102 are separated from each other to prevent the high-speed liquid in the pump chamber 101 from flowing into the floating chamber 102 and causing interference to the interior of the floating chamber 102.

[0034] In some embodiments, the drive assembly includes an impeller located within the pump chamber 101 and a motor 201 that drives the impeller to rotate.

[0035] In this embodiment, the pump body 10 has an inlet 104 and an outlet 105 that communicate with the pump chamber 101. After the motor 201 drives the impeller to rotate at high speed in the pump chamber 101, a negative pressure can be formed in the pump chamber 101. After the external liquid is pumped into the pump chamber 101 through the inlet 104, it is pumped out of the pump chamber 101 through the outlet 105.

[0036] In some embodiments, the control component includes a floating element 301 located within the floating cavity 102 and a control circuit board 302 electrically connected to the motor 201.

[0037] In this embodiment, when liquid is present in the floating cavity 102, the floating component 301 experiences a buoyant force from the liquid greater than its own weight, thus floating on the liquid surface. The control circuit board 302 can change the operating state of the motor 201 through different control signals.

[0038] In some embodiments, the floating member 301 has a first position and a second position with different horizontal heights. In the first position and the second position, the floating member 301 magnetically triggers the control signal of the control circuit board 302.

[0039] In this embodiment, as the liquid level or water level in the floating chamber 102 changes, the floating element 301 moves up and down with the liquid level, thus occupying different positions; that is, the first position and the second position have different horizontal heights. At the first and second positions, the floating element 301 uses magnetism to trigger different control signals on the control circuit board 302, such as controlling the motor to start and stop, thereby realizing the automatic pump's self-starting and self-shutting.

[0040] For example, the horizontal height of the first position is higher than that of the second position. When the floating element 301 is in the first position, it can use magnetism to trigger the start control signal of the control circuit board 302, at which time the motor 201 moves and the automatic pump works normally. After the liquid level in the floating chamber 102 drops, when the floating element 301 is in the second position, it can use magnetism to trigger the stop control signal of the control circuit board 302, at which time the motor 201 stops moving and the automatic pump stops working.

[0041] In some embodiments, in conjunction with reference Figure 3 As shown, the pump body 10 also includes a partition structure 103, which is located between the floating member 301 and the control circuit board 302.

[0042] In this embodiment, there is a separation structure 103 between the floating component 301 and the control circuit board 302, so that the floating component 301 can trigger the control signal without contacting the control circuit board 302, thereby avoiding poor contact or difficulty in detachment, and ensuring that the floating component 301 accurately triggers the control signal of the control circuit board 302.

[0043] In this embodiment, the floating element 301 can use magnetism to trigger different control signals of the control circuit board 302, realizing non-contact triggering. For example, after the position of the floating element 301 changes with the liquid level, a change in the magnetic field is generated. The control circuit board 302 controls the circuit on and off based on the detection result obtained from the change in the magnetic field, so as to realize the controllable start and stop of the motor 201.

[0044] In some embodiments, the control circuit board 302 is located inside the floating cavity 102.

[0045] In this embodiment, the control circuit board 302 is located inside the floating cavity 102, which can prevent the control circuit board 302 from being interfered with by the high-speed liquid inside the pump cavity 101.

[0046] In this embodiment, both the floating element 301 and the control circuit board 302 are located within the floating cavity 102, which also reduces the distance between the floating element 301 and the control circuit board 302, making it easier for the floating element 301 to trigger the control signal of the control circuit board 302. Furthermore, it also saves internal space in the pump cavity 101.

[0047] In other embodiments, the control circuit board 302 is located inside the pump chamber 101. In this embodiment, placing the control circuit board 302 inside the pump chamber 101 saves internal space in the floating chamber 102.

[0048] In other embodiments, the control circuit board 302 may also be located outside the pump body 10, as long as non-contact triggering can be achieved between the floating member 201 and the control circuit board 302.

[0049] In some embodiments, the partition structure 103 is located within the floating cavity 102. In this embodiment, placing the partition structure 103 within the floating cavity 102 saves internal space in the pump cavity 101.

[0050] In some embodiments, the partition structure 103 divides the floating cavity 102 into a first cavity 1021 and a second cavity 1022. In this embodiment, the first cavity 1021 and the second cavity 1022 are separated from each other, which can prevent liquid flow between them.

[0051] In some embodiments, the floating element 301 is located in the first cavity 1021, and the control circuit board 302 is located in the second cavity 1022.

[0052] In this embodiment, the position of the floating element 301 can change with the liquid level in the first cavity 1021. The control circuit board 302 is located in the second cavity 1022, which can prevent the control circuit board 302 from being affected by the liquid in the first cavity 1021 and ensure the normal operation of the control circuit board 302.

[0053] In some embodiments, in conjunction with reference Figure 4 As shown, the pump body 10 includes a pump housing 106 forming a pump chamber 101 and a control housing 107. In this embodiment, the motor 201 is mounted on the pump housing 106. The control housing 107 is connected to the pump housing 106 by fasteners. The control housing 107 can be located inside or outside the pump housing 106.

[0054] In some embodiments, the partition structure 103 is connected to the control housing 107. In this embodiment, the partition structure 103 and the control housing 107 are integrally formed, eliminating the assembly process between the partition structure 103 and the control housing 107.

[0055] In some embodiments, the floating cavity 102 is formed by the pump housing 106 and the control housing 107. In this embodiment, the partition structure 103 is installed together with the control housing 107 at the front end of the pump housing 106. Both the partition structure 103 and the control housing 107 abut against the outer wall of the pump housing 106, thereby forming the floating cavity 102, that is, forming the first cavity 1021 and the second cavity 1022.

[0056] In some embodiments, the floating member 301 has a first end wall 3011 opposite to the pump housing 106 and a second end wall 3012 opposite to the first end wall 3011, and the control housing 107 has a side plate 1071 opposite to the second end wall 3012.

[0057] For example, the first end wall 3011 may be the rear end face of the floating member 301, and the second end wall 3012 may be the front end face of the floating member 301.

[0058] In some embodiments, the first end wall 3011 is configured as an arcuate structure that matches the pump housing 106, and / or the second end wall 3012 is configured as an arcuate structure that matches the side plate 1071.

[0059] In this embodiment, at least one end wall of the floating member 301 (e.g., the first end wall 3011 and / or the second end wall 3012) adopts an arc-shaped structure. Compared with a planar end wall, this allows the floating member 301 to fit more closely to the inner wall of the floating cavity 102 (e.g., the outer wall of the pump housing 106 or the inner wall of the side plate 1071) during vertical movement. This prevents the floating member 301 from tilting or flipping during movement (e.g., vertical movement), ensuring that the floating member 301 accurately triggers the operation signal of the control circuit board 302, thereby achieving precise and stable automatic start-stop of the automatic pump.

[0060] For example, such as Figure 5 As shown, both the first end wall 3011 and the second end wall 3012 adopt an arc-shaped structure, that is, the first end wall 3011 is attached to the outer wall of the pump housing 106, and the second end wall 3012 is attached to the inner wall of the side plate 1071. The entire floating component 301 and the floating cavity 102 have a fan-shaped cross-section along the vertical direction, which allows the floating component 301 to slide more smoothly along the vertical direction in the floating cavity 102, and avoids the floating component 301 from tilting or overturning during movement.

[0061] In some embodiments, the automatic pump further includes a positioning structure that allows the floating member 301 to slide against the pump body 10. In this embodiment, the positioning structure enables the sliding engagement between the floating member 301 and the pump body 10, facilitating more stable movement of the floating member 301 as the liquid level changes. Furthermore, it prevents the floating member 301 from shifting during movement, for example, preventing it from shifting horizontally.

[0062] In some embodiments, in conjunction with reference Figure 6 As shown, the positioning structure includes a positioning block 401 disposed on one of the inner wall of the floating cavity 102 and the outer wall of the floating component 301, and a positioning groove 402 disposed on the other of the inner wall of the floating cavity 102 and the outer wall of the floating component 301.

[0063] In this embodiment, relatively speaking, setting the positioning block 401 on the outer wall (e.g., the front and rear end faces) of the floating member 301 and setting the positioning groove 402 on the inner wall of the floating cavity 102 can reduce the manufacturing difficulty of the positioning structure and ensure that the floating member 301 moves more stably with the change of liquid level.

[0064] In some embodiments, the sliding engagement direction of the positioning structure is set at a certain angle to the horizontal direction.

[0065] In this embodiment, the direction of the engagement between the floating component 301 and the pump body 10 is set at a certain angle (e.g., between 0-180°) with the horizontal direction, so that the floating component 301 moves up and down as the liquid level changes.

[0066] For example, the sliding fit direction of the positioning structure is along the vertical direction, that is, the included angle is 90°, which can reduce the resistance from the positioning structure experienced by the floating member 301 when it moves up and down with the liquid surface.

[0067] In some embodiments, the control circuit board 302 has a first sensor 3021 and a second sensor 3022, wherein the horizontal height of the first sensor 3021 is higher than the horizontal height of the second sensor 3022.

[0068] In this embodiment, as the floating element 301 moves with the change of the liquid level, when the floating element 301 approaches the first sensing element 3021, the floating element 301 is in the first position; when the floating element 301 approaches the second sensing element 3022, the floating element 301 is in the second position.

[0069] In some embodiments, the arrangement direction of the first sensing element 3021 and the second sensing element 3022 is parallel to the sliding engagement direction of the positioning structure.

[0070] In this embodiment, the arrangement direction of the two sensors (3021, 3022) is parallel to the mating direction of the positioning structure (e.g., the vertical direction), so that the floating member 301 accurately triggers the control signal with the two sensors (3021, 3022).

[0071] In some embodiments, in conjunction with reference Figure 7 As shown, the floating member 301 has a magnetic part 3013. In this embodiment, the floating member 301 also has a floating part 3014, and the magnetic part 3013 is located on the side of the floating part 3014 near the control circuit board 302.

[0072] For example, the magnetic part 3013 uses a permanent magnet. The sensing elements (3021, 3022) use Hall switches, such as magnetic induction switches. As the position of the floating element 301 changes, the relative position between the permanent magnet and either magnetic induction switch changes accordingly, thereby enabling selective triggering of the control signal.

[0073] In some embodiments, in a first position, the magnetic part 3013 and the first sensing element 3021 are located on opposite sides of the partition structure 103 along the horizontal direction, and in a second position, the magnetic part 3013 and the second sensing element 3022 are located on opposite sides of the partition structure 103 along the horizontal direction.

[0074] In this embodiment, the distance between the magnetic part 3013 and the first sensing element 3021 in the first position is equal to the distance between the magnetic part 3013 and the second sensing element 3022 in the second position. This ensures that the floating element 301 (i.e., the magnetic part 3013) triggers each control signal more accurately and stably.

[0075] In some embodiments, the positioning block 401 is disposed on the first end wall 3011, the positioning groove 402 is disposed on the pump housing 106, and / or the positioning block 401 is disposed on the second end wall 3012, and the positioning groove 402 is disposed on the control cover 107.

[0076] In this embodiment, the number of positioning structures can be at least one, that is, the number of positioning blocks 401 and positioning slots 402 can be at least one.

[0077] In this embodiment, the positioning block 401 is set on the front and rear end faces (i.e., the first end wall 3011 and / or the second end wall 3012), which can prevent the positioning block 401 from occupying the installation position of the magnetic part 3013.

[0078] In this embodiment, as Figure 5 The positioning block 401 is set on the second end wall 3012, and the positioning groove 402 is set on the control cover 107 (i.e., side plate 1071), which can simplify the structure of the automatic pump and thus reduce manufacturing costs.

[0079] In other embodiments, positioning blocks 401 are provided on both the front and rear end faces (i.e., the first end wall 3011 and the second end wall 3012) of the floating member 301, and positioning grooves 402 are provided on both the front and rear inner walls of the floating cavity 102, which can improve the stability of the floating member 301 when it moves in the floating cavity 102.

[0080] In some embodiments, continue to refer to Figure 6 As shown, the control housing 107 includes a housing 1072 connected to the pump housing 106 and an insert plate 1073. In this embodiment, the housing 1072 is fixed to the pump housing 106 using fasteners. The partition structure 103 is integrally formed with the housing 1072.

[0081] In some embodiments, the housing 1072 has a mounting port 10721 that exposes the floating cavity 102, and the insert plate 1073 is detachably connected to the housing 1072 and covers the mounting port 10721.

[0082] In this embodiment, the insert plate 1073 is detachably connected to the cover 1072, which facilitates regular maintenance of the interior of the floating cavity 102 and the floating component 301 within the floating cavity 102.

[0083] In this embodiment, the insert plate 1073 is snapped onto the cover 1072. After the insert plate 1073 is removed from the cover 1072 in a horizontal direction, the user can clean and maintain the inside of the floating cavity 102 and the floating component 301 inside the floating cavity 102 through the installation port 10721.

[0084] In some embodiments, the control housing 107 has a communication port 1074 connected to the floating cavity 102. In this embodiment, external liquid flows into or out of the floating cavity 102 through the communication port 1074, so that the water level inside the floating cavity 102 (i.e., inside the first cavity 1021) is equal to the external water level.

[0085] In some embodiments, the communication port 1074 is disposed on the housing 1072 and / or the insert plate 1073. In this embodiment, the communication port 1074 is disposed on the housing 1072 (i.e., the side plate 1071) and the insert plate 1073 to facilitate liquid exchange between the floating cavity 102 and the outside, so as to achieve horizontal leveling.

[0086] For example, both the side plate 1071 and the insert plate 1073 are provided with a plurality of communication ports 1074.

[0087] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0088] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automatic pump, characterized in that, include: The pump body has a pump chamber and a floating chamber that are separated from each other; The drive assembly includes an impeller located within the pump chamber and a motor that drives the impeller to rotate; The control component includes a floating element located within a floating cavity and a control circuit board electrically connected to a motor. The floating element has a first position and a second position with different horizontal heights. In the first position and the second position, the floating element magnetically triggers a control signal from the control circuit board. The pump body also includes a partition structure located between the floating component and the control circuit board.

2. The automatic pump as described in claim 1, characterized in that, The control circuit board is located inside the pump chamber or the floating chamber.

3. The automatic pump as described in claim 1, characterized in that, The partition structure is located inside the floating cavity and divides the floating cavity into a first cavity and a second cavity. The floating component is located inside the first cavity, and the control circuit board is located inside the second cavity.

4. The automatic pump as described in claim 1, characterized in that, The pump body includes a pump casing forming a pump cavity and a control cover. The partition structure is connected to the control cover. The floating cavity is formed by the pump casing and the control cover. The floating element has a first end wall opposite to the pump casing and a second end wall opposite to the first end wall. The control cover has a side plate opposite to the second end wall. The first end wall is configured with an arcuate structure that matches the pump casing, and / or the second end wall is configured with an arcuate structure that matches the side plate.

5. The automatic pump as described in claim 1, characterized in that, The automatic pump also includes a positioning structure that allows the floating component to slide against the pump body. The positioning structure includes a positioning block disposed on one of the inner wall of the floating cavity and the outer wall of the floating component, and a positioning groove disposed on the other of the inner wall of the floating cavity and the outer wall of the floating component. The sliding engagement direction of the positioning structure is set at a certain angle to the horizontal direction.

6. The automatic pump as described in claim 5, characterized in that, The control circuit board has a first sensor and a second sensor. The horizontal height of the first sensor is higher than that of the second sensor. The arrangement direction of the first sensor and the second sensor is parallel to the sliding engagement direction of the positioning structure.

7. The automatic pump as described in claim 6, characterized in that, The floating member has a magnetic part. In the first position, the magnetic part and the first sensing element are located on opposite sides of the separation structure along the horizontal direction. In the second position, the magnetic part and the second sensing element are located on opposite sides of the separation structure along the horizontal direction.

8. The automatic pump as described in claim 5, characterized in that, The floating component has a first end wall and a second end wall disposed opposite to each other; the pump body includes a pump casing and a control cover; the positioning block is disposed on the first end wall; and the positioning groove is disposed on the pump casing; and / or... The positioning block is disposed on the second end wall, and the positioning groove is disposed on the control cover.

9. The automatic pump as described in claim 4, characterized in that, The control housing includes a housing connected to the pump housing and an insert plate. The housing has an installation port that exposes the floating cavity. The insert plate is detachably connected to the housing and covers the installation port.

10. The automatic pump as described in claim 9, characterized in that, The control housing has a communication port connected to the floating cavity, and the communication port is disposed on the housing and / or the insert plate.

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