float level switch

Abstract

The utility model provides a kind of float ball liquid level switch, including shell, first snap ring, second snap ring, float and control element, shell includes shell main body and the connecting portion connected in shell main body, connecting portion is used to be connected with equipment, and the circumferential interval of shell main body is provided with first clamping groove and second clamping groove;First snap ring is clamped in first clamping groove;Second snap ring is clamped in second clamping groove;Float is sleeved on shell, and it is located between first snap ring and second snap ring, and magnetic ring is arranged in float;Control element includes circuit board, terminal and reed switch, and the end of circuit board is electrically connected with terminal, and circuit board is electrically connected with reed switch, and the position of reed switch corresponds with the position of float.The float ball liquid level switch provided by the utility model is convenient to install and disassemble, and batch production is facilitated simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of liquid level switch technology, and more specifically, to a float liquid level switch. Background Technology

[0002] A float level switch is used to sense changes in liquid level, generating an electrical signal which is then transmitted via cable to control the system. Due to its ease of use and accurate measurement, it is widely used in products with liquid storage devices. Because of its simple structure, ease of use, and reliable safety, it has been widely applied in shipbuilding, papermaking, generator equipment, food industry, water treatment, and hydraulic machinery. Figure 1 As shown, the existing float level switch includes wire 10, terminal 20, threaded section 30, plastic box 40, reed switch 50, float 60, and sealing ring 70. Wire 10 connects reed switch 50 and terminal 20. The fixing method is to pass the threaded section 30 on the plastic box 40 through the mounting hole, and then screw nut 90 into the threaded section 30 for fixing. The installation method is relatively cumbersome, and there are many parts, and the production process is long. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] The technical problem this invention aims to solve is that existing float level switches have cumbersome installation methods and long production processes.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a float level switch, including a housing, a first retaining ring, a second retaining ring, a float, and a control element. The housing includes a housing body and a connecting part connected to the housing body. The connecting part is used to engage with a device. The housing body has a first retaining groove and a second retaining groove spaced apart circumferentially. The first retaining ring engages with the first retaining groove. The second retaining ring engages with the second retaining groove. The float is sleeved on the housing and disposed between the first retaining ring and the second retaining ring. The float contains a magnetic ring. The control element includes a circuit board, terminals, and a reed switch. The end of the circuit board is electrically connected to the terminals, and the circuit board is electrically connected to the reed switch. The position of the reed switch corresponds to the position of the float.

[0008] Preferably, the connecting part includes a rotating buckle, which is disposed at the end of the housing body and is used to match the mounting groove on the device.

[0009] Preferably, the plane containing the rotating buckle is perpendicular to the axis of the outer shell body.

[0010] Preferably, the outer diameter of the first retaining ring is larger than the inner diameter of the float, and the outer diameter of the second retaining ring is larger than the inner diameter of the float.

[0011] Preferably, the device further includes fasteners. The connecting part includes a connecting boss, which is fixedly connected to the housing body. The connecting boss has a mounting hole, and the fastener is used to pass through the mounting hole to securely connect the connecting boss and the device.

[0012] Preferably, the outer casing has a receiving cavity, and the circuit board is disposed within the receiving cavity.

[0013] Preferably, there are two reed switches, which are arranged opposite to each other and electrically connected to the circuit board.

[0014] Preferably, the first retaining ring includes a first ring plate and a plurality of first protrusions, the plurality of first protrusions being spaced apart and connected to the end face of the first ring plate; the second retaining ring includes a second ring plate and a plurality of second protrusions, the plurality of second protrusions being spaced apart and connected to the end face of the second ring plate.

[0015] Preferably, the inner ring of the first ring piece has a first opening, and the outer ring of the first ring piece has a second opening, the width of the second opening being greater than the width of the first opening.

[0016] Preferably, the inner ring of the second ring piece has a third opening, and the outer ring of the second ring piece has a fourth opening, the width of the fourth opening being greater than the width of the third opening.

[0017] (III) Beneficial Effects

[0018] The above-mentioned technical solution of this utility model has at least the following advantages:

[0019] In this invention, the circuit board, terminals, and reed switch are connected to form an integrated control element, facilitating production, assembly, and subsequent maintenance and replacement. The outer casing has a connecting part that engages with the equipment to install the float level switch, simplifying installation and disassembly. A first retaining ring engages with a first retaining groove, and a second retaining ring engages with a second retaining groove. These first and second retaining rings limit the movement of the float, and can also be detached from the outer casing for easy disassembly and maintenance of the float. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a float level switch in the prior art.

[0022] Figure 2 This is a schematic diagram of the structure of the float level switch provided in this embodiment of the utility model.

[0023] Figure 3 This is an exploded view of the structure of the float level switch provided in this embodiment of the utility model.

[0024] Figure 4 This is a schematic diagram of the outer shell provided in an embodiment of the present utility model.

[0025] Figure 5 This is a schematic diagram of the structure of the control element provided in an embodiment of this utility model.

[0026] Figure 6 This is a schematic diagram of the usage status of the float level switch provided in this embodiment of the utility model.

[0027] The labels for the attached figures are as follows:

[0028] 10. Wire; 20. Terminal; 30. Threaded section; 40. Glue box; 50. Reed switch; 60. Float; 70. Sealing ring; 90. Nut; 1. Housing; 2. First retaining ring; 3. Second retaining ring; 4. Float; 5. Control element; 11. Housing body; 12. Connecting part; 13. First retaining groove; 14. Second retaining groove; 111. Receiving cavity; 121. Rotating buckle; 122. Connecting boss; 1221. Mounting hole; 21. First ring piece; 22. First protrusion; 211. First opening; 212. Second opening; 31. Second ring piece; 32. Second protrusion; 311. Third opening; 312. Fourth opening; 51. Circuit board; 52. Terminal; 53. Reed switch. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0033] like Figures 2 to 6 As shown, this utility model embodiment provides a float level switch, including a housing 1, a first retaining ring 2, a second retaining ring 3, a float 4, and a control element 5. The housing 1 includes a housing body 11 and a connecting part 12 connected to the housing body 11. The connecting part 12 is used to engage with the device. The housing body 11 is circumferentially provided with a first retaining groove 13 and a second retaining groove 14. The first retaining ring 2 engages with the first retaining groove 13; the second retaining ring 3 engages with the second retaining groove 14. The float 4 is sleeved on the housing 1 and is located between the first retaining ring 2 and the second retaining ring 3. A magnetic ring is provided inside the float 4. The control element 5 includes a circuit board 51, a terminal 52, and a reed switch 53. The end of the circuit board 51 is electrically connected to the terminal 52, and the circuit board 51 is electrically connected to the reed switch 53. The position of the reed switch 53 corresponds to the position of the float 4. Specifically, when the float 4 moves, the magnetic ring inside it can sense the reed switch 53, thereby causing the reed switch 53 on the circuit board 51 to engage or disengage, and thus output a switch signal.

[0034] In one optional embodiment of this invention, the connecting part 12 includes a rotating buckle 121, which is located at the end of the housing body 11 and is used to match the mounting groove on the equipment. Rotating the rotating buckle 121 can engage the rotating buckle 121 into the mounting groove, thereby securing the float level switch in the corresponding position on the equipment.

[0035] As one of the optional implementations of this embodiment, the plane on which the rotating buckle 121 is located is perpendicular to the axis of the outer shell body 11.

[0036] In one optional implementation of this embodiment, the outer diameter of the first retaining ring 2 is larger than the inner diameter of the float 4, and the outer diameter of the second retaining ring 3 is larger than the inner diameter of the float 4. Thus, the movement of the float 4 is limited by the first retaining ring 2 and the second retaining ring 3.

[0037] As one optional embodiment of this invention, a fastener is also included. The connecting part 12 includes a connecting boss 122, which is fixedly connected to the housing body 11. The connecting boss 122 has a mounting hole 1221, and the fastener is used to pass through the mounting hole 1221 to securely connect the connecting boss 122 to the device. By aligning the position of the connecting boss 122 with the connecting hole on the device and then tightening the fastener, a secure connection between the float level switch and the device can be further achieved, preventing the float level switch from moving during operation.

[0038] In one optional embodiment of this invention, the outer casing 11 has a receiving cavity 111, and the circuit board 51 is disposed within the receiving cavity 111. The outer casing 11 isolates the circuit board 51 from the external environment, thereby protecting the circuit board 51.

[0039] In one optional implementation of this embodiment, there are two reed switches 53, which are arranged opposite each other and electrically connected to the circuit board 51. The two reed switches 53 can improve the fault tolerance and detection accuracy of the float level switch, preventing the float level switch from malfunctioning due to the failure of one reed switch 53.

[0040] In one optional embodiment of this invention, the first retaining ring 2 includes a first ring piece 21 and a plurality of first protrusions 22, the plurality of first protrusions 22 being spaced apart and connected to the end face of the first ring piece 21; the second retaining ring 3 includes a second ring piece 31 and a plurality of second protrusions 32, the plurality of second protrusions 32 being spaced apart and connected to the end face of the second ring piece 31. The first protrusions 22 can limit the position of the first ring piece 21, preventing the first ring piece 21 from disengaging from the first retaining groove 13 during operation. Similarly, the second protrusions 32 can limit the position of the second ring piece 31, preventing the second ring piece 31 from disengaging from the second retaining groove 14 during operation.

[0041] In one optional implementation of this embodiment, the inner ring of the first ring piece 21 has a first opening 211, and the outer ring of the first ring piece 21 has a second opening 212, the width of the second opening 212 being greater than the width of the first opening 211. The second opening 212 facilitates the insertion of the first ring piece 21 into the first slot 13, while the first opening 211 reduces the possibility of the first ring piece 21 disengaging from the first slot 13.

[0042] In one optional embodiment of this invention, the inner ring of the second ring piece 31 has a third opening 311, and the outer ring of the second ring piece 31 has a fourth opening 312. The width of the fourth opening 312 is greater than the width of the third opening 311. The fourth opening 312 facilitates the insertion of the second ring piece 31 into the second slot 14, while the third opening 311 reduces the possibility of the second ring piece 31 disengaging from the second slot 14.

[0043] The installation method of this embodiment is as follows: First, the control element 5 is installed into the receiving cavity 111 of the housing body 11. Then, the float 4 is fitted between the first slot 13 and the second slot 14. Next, the first retaining ring 2 is engaged in the first slot 13; the second retaining ring 3 is engaged in the second slot 14, thus obtaining the float level switch. The rotating buckle 121 is aligned with the mounting slot on the device, and then the rotating buckle 121 is rotated to engage in the mounting slot. According to the installation requirements, the position of the connecting boss 122 can be further aligned with the connecting hole on the device. Then, the fasteners are tightened to further achieve a tight connection between the float level switch and the device. During operation, the float 4 floats on the liquid surface of the device. The rise or fall of the liquid will cause the float 4 to move up and down together, thereby causing the reed switch 53 on the circuit board 51 to engage or disengage, thus outputting a switch information, which is transmitted to the connected device through the terminal 52.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A float level switch, characterized in that, include: The housing includes a housing body and a connecting part connected to the housing body. The connecting part is used to snap onto the device. The housing body is provided with a first slot and a second slot at circumferential intervals. The first retaining ring is engaged with the first retaining slot; The second retaining ring engages with the second retaining slot; A float is fitted onto the outer shell and positioned between the first retaining ring and the second retaining ring, and a magnetic ring is provided inside the float; The control element includes a circuit board, terminals, and a reed switch. The terminals are electrically connected to the end of the circuit board, and the reed switch is electrically connected to the circuit board. The position of the reed switch corresponds to the position of the float.

2. The float level switch as described in claim 1, characterized in that, The connecting part includes a rotating buckle, which is located at the end of the housing body and is used to match the mounting slot on the device.

3. The float level switch as described in claim 2, characterized in that, The plane containing the rotating buckle is perpendicular to the axis of the outer shell body.

4. The float level switch as described in claim 1, characterized in that, The outer diameter of the first retaining ring is larger than the inner diameter of the float, and the outer diameter of the second retaining ring is larger than the inner diameter of the float.

5. The float level switch as described in claim 1, characterized in that, It also includes fasteners, the connecting part includes a connecting boss, the connecting boss is fixedly connected to the housing body, the connecting boss has a mounting hole, and the fastener is used to pass through the mounting hole to fasten the connecting boss to the device.

6. The float level switch as described in claim 1, characterized in that, The outer casing has a receiving cavity, and the circuit board is disposed within the receiving cavity.

7. The float level switch as described in claim 1, characterized in that, There are two reed switches, which are arranged opposite each other and electrically connected to the circuit board.

8. The float level switch as described in claim 1, characterized in that, The first retaining ring includes a first ring plate and a plurality of first protrusions, the plurality of first protrusions being spaced apart and connected to the end face of the first ring plate; the second retaining ring includes a second ring plate and a plurality of second protrusions, the plurality of second protrusions being spaced apart and connected to the end face of the second ring plate.

9. The float level switch as described in claim 8, characterized in that, The inner ring of the first ring piece has a first opening, and the outer ring of the first ring piece has a second opening, the width of the second opening being greater than the width of the first opening.

10. The float level switch as described in claim 8, characterized in that, The inner ring of the second ring piece has a third opening, and the outer ring of the second ring piece has a fourth opening, the width of the fourth opening being greater than the width of the third opening.

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