Vertical float switch structure

Abstract

The utility model discloses a vertical floating ball switch structure, which comprises a shell, and a trigger switch, a driving lever, a connecting rod mechanism, a suspender and a floating ball which are arranged on the shell, the driving lever is connected with the suspender, the suspender drives the driving lever to swing when doing reciprocating motion, and the driving lever controls the on-off operation of the trigger switch through the connecting rod mechanism. In order to ensure the force required by the driving lever to drive the trigger switch to act, the first magnet is arranged at the upper end of the lifting rod, and the second magnet opposite to the first magnet up and down is arranged on the inner top surface of the shell, so that by adopting the technical scheme, when the floating ball rises along with the water level, the second magnet is driven to be close to the first magnet; the buoyancy of the floating ball is compensated through the magnetic attraction force of the two magnets, so that the driving lever drives the trigger switch to act through the connecting rod mechanism, the length of the product driving lever can be effectively reduced through the structural design, the product size is reduced, meanwhile, the size of the floating ball is reduced, the structure is simple, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level controllers, in particular to a vertical float switch structure. Background Art

[0002] Vertical float switches automatically start and stop water pumps by detecting liquid levels. They rise and fall according to the water level, controlling the internal switch's action and outputting signals to control pumps or other electrical components. Due to their simple structure, reliable output, and low cost, float switches are widely used in water treatment, clean water tanks, sewage tanks, and liquid chemical raw materials, providing significant benefits to the water supply and drainage, sewage treatment, and chemical industries.

[0003] The existing vertical float switch mainly includes a shell, a switch assembly, a lever assembly, and a float. The lever assembly includes a swinging lever and a connecting rod mechanism that transmits motion and force between the lever and the switch assembly. The lever and the switch assembly are connected by a connecting rod mechanism. When the float rises or falls, the lever drives the lever to swing. The lever drives the switch assembly through the connecting rod mechanism to realize the on-off operation. It can be seen that the lever drives the connecting rod mechanism to convert the action to rely on the buoyancy and gravity of the float to realize the on-off of the switch. In order to reliably drive the connecting rod mechanism to control the on-off of the switch, it is often necessary to increase the volume and weight of the float; or according to the lever principle, the lever needs to be lengthened, which will increase the volume of the product and increase the cost. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem that in order to reliably drive the lever and the connecting rod mechanism to control the on and off of the switch, the float switch in the prior art often needs to increase the volume and weight of the float, or lengthen the lever, which will cause the product volume to increase and increase the cost.

[0005] In order to solve the above problems, the utility model provides a vertical float switch structure, including a shell and a trigger switch, a lever and a float assembly arranged in the shell, the float assembly includes a suspension rod arranged in the shell for reciprocating movement and a float arranged on the suspension rod, the lever is swingingly arranged in the shell and connected to the suspension rod, and the suspension rod drives the lever to swing when it moves back and forth under the buoyancy of the float, and a magnetic assembly with magnetic attraction is arranged between the shell and the suspension rod, and the magnetic assembly includes a first magnet arranged at the upper end of the suspension rod away from the float, and a second magnet correspondingly arranged in the shell and opposite to the first magnet up and down, and the first magnet and the second magnet approach each other and attract each other when the suspension rod moves upward.

[0006] In the above-mentioned vertical float switch structure, the inner top surface of the shell is provided with a mounting groove opposite to the upper end of the suspension rod, the second magnet is embedded in the mounting groove, the first magnet is fixed to the upper end of the suspension rod, and the magnetic poles of the first magnet and the second magnet on the opposite side are different.

[0007] In the above-mentioned vertical float switch structure, the shell includes a guide channel extending along the moving direction of the suspension rod, the suspension rod slides through the guide channel, the mounting groove is located at the upper end of the guide channel, and the second magnet is located at the upper end of the guide channel.

[0008] In the above-mentioned vertical float switch structure, the side wall of the guide channel is provided with a through hole structure for the shift rod to pass through, and the suspension rod is radially extended to provide a socket structure that cooperates with one end of the shift rod.

[0009] In the above-mentioned vertical float switch structure, the suspension rod includes a guide rod slidably connected to the guide channel, and a float rod detachably connected to the guide rod, the float is arranged on the float rod, and the socket structure is arranged on the guide rod.

[0010] In the above-mentioned vertical float switch structure, at least one counterweight block is provided in the float.

[0011] In the above-mentioned vertical float switch structure, a connecting rod mechanism is provided between the shifting rod and the trigger switch, and the shifting rod is swingably arranged in the housing via a rotating shaft.

[0012] In the above-mentioned vertical float switch structure, the shell includes a first cavity provided with a trigger switch and a second cavity provided with a guide channel, and a connecting port provided between the first cavity and the second cavity for the lever to pass through, and a sealing structure is provided between the lever and the connecting port to seal and separate the first cavity and the second cavity.

[0013] In the above-mentioned vertical float switch structure, the sealing structure includes a fixing frame arranged in the connecting port, and a flexible sealing sleeve tightly arranged between the fixing frame and the inner wall of the connecting port. The flexible sealing sleeve has a sealing through hole for the lever to pass through, and the lever passes through the sealing through hole to connect to the suspension rod.

[0014] In the above-mentioned vertical float switch structure, the flexible sealing sleeve includes a first sleeve portion sealed between the fixing frame and the inner wall of the connecting port, a second sleeve portion sealed on the shift rod, and a buffer deformation portion connected in a corrugated shape between the first sleeve portion and the second sleeve portion, the second sleeve portion includes the sealing through hole, one end of the shift rod is rotatably accommodated in the fixing frame, and the other end thereof is sealed through the second sleeve portion.

[0015] Compared with the existing technology, the technical solution of this utility model has the following advantages:

[0016] 1. In the vertical float switch structure provided by the present invention, when the suspension rod is lifted and lowered under the action of the buoyancy of the float, it drives the lever to swing, and the lever controls the on and off operation of the trigger switch through a connecting rod mechanism. In order to ensure the force required for the lever to drive the trigger switch, a first magnet is arranged at the upper end of the suspension rod, and a second magnet is arranged on the top surface of the shell, which is opposite to the first magnet above and below. When the float rises with the water level, the second magnet will be driven close to the first magnet. The buoyancy of the float is compensated by the magnetic attraction of the two magnets, thereby achieving the force required for the lever to drive the trigger switch through the connecting rod mechanism. The advantage of this structural design is that the compensation of buoyancy by magnetic attraction can effectively reduce the length of the product lever and thus reduce the product volume, while also reducing the volume of the float. The structure is simple, which is conducive to reducing costs and improving product performance.

[0017] 2. In the vertical float switch structure provided by the utility model, a guide channel extending along the moving direction of the boom is provided in the shell, and the boom slides through the guide channel. This structural arrangement plays a motion guiding role for the reciprocating movement of the boom through the guide channel to avoid offset. The second magnet is installed on the top surface of the shell and is located exactly at the upper end of the guide channel, ensuring that the second magnet and the first magnet are in a positive relative relationship, so that the two magnets are attracted to each other when the float rises with the water level. The magnetic attraction of the two magnets is used to compensate for the buoyancy of the float, so as to achieve the force required for the lever to drive the connecting rod mechanism to control the on-off triggering of the switch.

[0018] 3. In the vertical float switch structure provided by the present invention, when the product is disconnected, due to the existence of magnetic force, in order to ensure that the float overcomes the magnetic attraction force under its own gravity and thus drives the suspension rod to move downward, it is necessary to add a counterweight block inside the float to ensure that the float drives the suspension rod downward as the water level drops, thereby driving the lever to swing and realize the disconnection of the float switch.

[0019] 4. In the vertical float switch structure provided by the present invention, in order to prevent external water and water vapor from entering the first cavity from the second cavity, a sealing treatment is required. A flexible sealing sleeve is installed between the lever and the connection port. The flexible sealing sleeve is squeezed and installed between the fixing frame and the inner wall of the connection port, and has a sealing through hole for the lever to pass through. This structural setting uses the flexible sealing sleeve to seal the connection port position and achieves a sealed connection with the lever at the same time. The flexible sealing sleeve can elastically deform when under pressure, which just meets the lever sealing swing setting. By setting the flexible sealing sleeve, the sealing isolation between the first cavity and the second cavity is achieved, which has a sealing and waterproof effect, ensures the sealing and safety of the internal switch components of the product, and improves the product protection level. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific implementation or the description of the prior art.

[0021] Figure 1 This is a schematic cross-sectional view of the vertical float switch structure of the present invention;

[0022] Figure 2 This is a schematic structural diagram of the vertical float switch structure of the utility model in the on state;

[0023] Figure 3 This is a schematic structural diagram of the vertical float switch structure of the utility model in the disconnected state;

[0024] Figure 4 This is a schematic structural diagram of the flexible sealing sleeve of the present utility model.

[0025] Explanation of the accompanying drawings: 1. Shell; 11. First cavity; 12. Second cavity; 13. Guide channel; 14. Fixed frame; 2. Push rod; 3. Connecting rod mechanism; 4. Trigger switch; 5. Hanging rod; 50. Socket structure; 51. Guide rod; 52. Float rod; 6. Float; 61. Counterweight; 7. First magnet; 8. Second magnet; 9. Flexible sealing sleeve; 91. First socket connection part; 92. Second socket connection part; 93. Buffering deformation part; 94. Sealing through hole. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Example

[0031] The present embodiment will be described in detail below with reference to the accompanying drawings:

[0032] This embodiment provides Figure 1-4 The vertical float switch structure shown includes a shell 1 and a trigger switch 4, a lever 2, a connecting rod mechanism 3 and a float assembly arranged on the shell 1. The float assembly includes a suspension rod 5 that is reciprocatingly arranged on the shell 1 and a float 6 arranged on the suspension rod 5. The lever 2 is swingably arranged in the shell 1 and connected to the suspension rod 5. The connecting rod mechanism 3 is connected between the lever 2 and the trigger switch 4 for transmitting motion and force. The lever 2 is inserted and connected to the suspension rod 5. When the suspension rod 5 moves back and forth under the buoyancy of the float 6, it drives the lever 2 to swing. A magnetic component that attracts each other is provided between the shell 1 and the suspension rod 5. The magnetic component includes a first magnet 7 arranged at the upper end of the suspension rod 5 away from the float 6, and a second magnet 8 corresponding to the shell 1 and opposite to the first magnet 7 up and down. The first magnet 7 and the second magnet 8 are close to each other and attracted when the suspension rod moves upward.

[0033] The above implementation is the core technical solution of this embodiment. When the boom 5 is lifted and lowered under the buoyancy of the float, it drives the lever 2 to swing. The lever 2 controls the on and off operation of the trigger switch 4 through the connecting rod mechanism 3. In order to ensure the force required for the lever 2 to drive the trigger switch 4, a first magnet 7 is set at the upper end of the boom 5, and a second magnet 8 is set on the top surface of the shell 1, which is opposite to the first magnet 7. When the float 6 rises with the water level, it will drive the second magnet 8 close to the first magnet 7. The buoyancy of the float 6 is compensated by the magnetic attraction of the two magnets, thereby achieving the force required for the lever 2 to drive the trigger switch through the connecting rod mechanism 3. The advantage of this structural design is that the compensation of buoyancy by magnetic attraction can effectively reduce the length of the product lever and thus reduce the product volume, while also reducing the volume of the float. The structure is simple, which is conducive to reducing costs and improving product performance.

[0034] As a preferred embodiment, refer to Figure 2-3The top surface of the shell 1 is provided with a mounting groove opposite to the upper end of the suspension rod, and the second magnet 8 is embedded in the mounting groove, thereby realizing the installation and fixation of the second magnet 8, and the first magnet 7 is fixed to the upper end of the suspension rod 5. Specifically, a mounting groove for installing the first magnet 7 can be opened at the upper end of the suspension rod, and the magnetic poles of the first magnet 7 and the second magnet 8 on the opposite side are different, so that the first magnet 7 and the second magnet 8 are attracted to each other by magnetic force when they are close to each other. It is further preferred that the shell 1 includes a guide channel 13 extending along the moving direction of the suspension rod 5, and the suspension rod 5 is slidably inserted into the guide channel 13, and the mounting groove is located at the upper end of the guide channel 13. The opening of the mounting groove is opposite to the upper end of the guide channel, and the second magnet 8 is located at the upper end of the guide channel 13. This structural setting plays a motion guiding role for the reciprocating movement of the boom 5 through the guide channel 13 to avoid offset. The second magnet 8 is installed on the top surface of the shell 1 and is located exactly at the upper end of the guide channel 13. It is ensured that the second magnet 8 and the first magnet 7 are in a positive relative relationship, so that the two magnets attract each other when the float 6 rises with the water level. The magnetic attraction of the two magnets is used to compensate for the buoyancy of the float 6, so that the lever 2 drives the connecting rod mechanism 3 to control the force required to trigger the switch on and off.

[0035] The specific arrangement between the shifting rod and the suspension rod is described in detail below:

[0036] like Figure 1-3 As shown, the side wall of the guide channel 13 is provided with a through-hole structure for the lever 2 to pass through, and the suspension rod 5 is provided with a socket structure 50 extending radially and cooperating with one end of the lever 2. The lever 2 is rotatably arranged in the housing 1 via a rotating shaft, and the rotating shaft is provided on the other end of the lever 2, so that the lever 2 can swing around the axis when pushed by the suspension rod 5, and the trigger switch 4 is driven to be turned on and off through the connecting rod mechanism 3. It is further provided that the suspension rod 5 includes a guide rod 51 slidably connected to the guide channel 13, and a float rod 52 detachably connected to the guide rod 51. The float 6 is provided on the float rod 52, and the socket structure 50 is provided on the guide rod 51, that is, the lever 2 and the guide rod 51 are intersectingly connected, and the guide rod 51 and the float rod 52 are preferably connected by a threaded connection.

[0037] When the float switch needs to be disconnected, due to the existence of magnetic force, in order to ensure that the float 6 can overcome the magnetic attraction under its own gravity and thus drive the suspension rod 5 to move downward, such as Figure 1 As shown, at least one counterweight 61 is arranged in the float 6 to increase the gravity of the float, so as to ensure that the float 6 drives the suspension rod 5 downward as the water level drops, thereby driving the lever to swing and realize the disconnection of the float switch.

[0038] In this embodiment, combined with Figure 2-4 As shown, the housing 1 includes a first cavity 11 provided with a trigger switch 4 and a second cavity 12 provided with a guide channel 13, and a connecting port provided between the first cavity 11 and the second cavity 12 for the lever 2 to pass through. A sealing structure for sealing and separating the first cavity 11 and the second cavity 12 is provided between the lever 2 and the connecting port. As a specific structural setting, the sealing structure includes a fixing frame 14 provided in the connecting port, and a flexible sealing sleeve 9 tightly provided between the fixing frame 14 and the inner wall of the connecting port. The flexible sealing sleeve 9 has a sealing through hole 94 for the lever 2 to pass through in a sealed manner. The lever 2 is connected to the suspension rod 5 through the sealing through hole 94, and the fixing frame 14 is in a circular ring shape. This structural setting uses a flexible sealing sleeve 9 to seal the connection port and achieve a sealed connection with the lever 2. The flexible sealing sleeve 9 has the characteristic of elastic deformation under pressure, which just meets the sealing requirement of the lever swing. The flexible sealing sleeve 9 realizes the sealed isolation between the first cavity 11 and the second cavity 12, preventing liquid from entering the first cavity from the connection port and causing damage to the switch components, achieving a sealing and waterproof effect, ensuring the sealing and safety of the internal switch components of the product, and improving the product protection level.

[0039] As a specific structural setting, such as Figure 4 As shown, the flexible sealing sleeve 9 includes a first sleeve portion 91 that is sealed and connected between the fixing frame 14 and the inner wall of the connecting port, a second sleeve portion 92 that is sealingly sleeved on the shift rod 2, and a buffer deformation portion 93 that is corrugated and connected between the first sleeve portion 91 and the second sleeve portion 92. The second sleeve portion 92 includes the sealing through hole 94. One end of the shift rod 2 is rotatably accommodated in the fixing frame 14, and the other end thereof is sealed through the second sleeve portion 92. The first sleeve portion 91 and the second sleeve portion 92 are coaxially arranged and have a circular ring shape in cross section. The second sealing portion is covered and fixed on the shift rod 2 by a crimping ring or a locking buckle. This buffer deformation portion 93 radially connects the first sleeve portion 91 and the second sleeve portion 92, and can play a buffering and compensating role in the swing of the shift rod.

[0040] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A vertical float switch structure, comprising a housing (1), a trigger switch (4) arranged on the housing (1), a lever (2), and a float assembly, wherein the float assembly comprises a suspension rod (5) arranged to reciprocate on the housing (1) and a float (6) arranged on the suspension rod (5), the lever (2) being swingably arranged in the housing (1) and connected to the suspension rod (5), characterized in that: A magnetic component for magnetic attraction is provided between the shell (1) and the suspension rod (5), and the magnetic component comprises a first magnet (7) provided at the upper end of the suspension rod (5) away from the float (6), and a second magnet (8) provided corresponding to the shell (1) and opposite to the first magnet (7) in the upper and lower directions. The first magnet (7) and the second magnet (8) are attracted to each other when the suspension rod moves upward.

2. The vertical float switch structure according to claim 1, characterized in that: The inner top surface of the shell (1) is provided with a mounting groove opposite to the upper end of the suspension rod (5), the second magnet (8) is embedded in the mounting groove, the first magnet (7) is fixed to the upper end of the suspension rod (5), and the magnetic poles of the first magnet (7) and the second magnet (8) on the opposite side are different.

3. The vertical float switch structure according to claim 2, characterized in that: The housing (1) has a guide channel (13) extending along the moving direction of the suspension rod (5), the suspension rod (5) is slidably inserted into the guide channel (13), the mounting groove is located at the upper end of the guide channel (13), and the second magnet (8) is located at the upper end of the guide channel (13).

4. The vertical float switch structure according to claim 3, characterized in that: The side wall of the guide channel (13) is provided with a through hole structure for the shifting rod (2) to pass through, and the suspension rod (5) is provided with a socket structure (50) in the radial direction to cooperate with one end of the shifting rod (2).

5. The vertical float switch structure according to claim 4, characterized in that: The suspension rod (5) includes a guide rod (51) slidably connected to the guide channel (13), and a float rod (52) detachably connected to the guide rod (51); the float (6) is arranged on the float rod (52); and the socket structure (50) is arranged on the guide rod (51).

6. The vertical float switch structure according to any one of claims 1 to 5, characterized in that: At least one counterweight (61) is provided in the float (6).

7. The vertical float switch structure according to claim 1, characterized in that: A connecting rod mechanism (3) is provided between the shifting rod (2) and the trigger switch (4), and the shifting rod (2) is swingably provided in the housing (1) via a rotating shaft.

8. The vertical float switch structure according to claim 1, characterized in that: The housing (1) comprises a first cavity (11) provided with a trigger switch (4), a second cavity (12) provided with a guide channel (13), and a connecting port arranged between the first cavity (11) and the second cavity (12) for the shifting rod (2) to pass through, and a sealing structure is provided between the shifting rod (2) and the connecting port for sealing and isolating the first cavity (11) and the second cavity (12).

9. The vertical float switch structure according to claim 8, characterized in that: The sealing structure comprises a fixing frame (14) arranged in the connecting port, and a flexible sealing sleeve (9) tightly arranged between the fixing frame (14) and the inner wall of the connecting port, wherein the flexible sealing sleeve (9) has a sealing through hole (94) for the shifting rod (2) to pass through in a sealed manner, and the shifting rod (2) passes through the sealing through hole (94) to connect with the suspension rod (5).

10. The vertical float switch structure according to claim 9, characterized in that: The flexible sealing sleeve (9) includes a first sleeve portion (91) sealed between the fixing frame (14) and the inner wall of the connection port, a second sleeve portion (92) sealingly sleeved on the shifting rod (2), and a buffer deformation portion (93) connected in a corrugated shape between the first sleeve portion (91) and the second sleeve portion (92), the second sleeve portion (92) including the sealing through hole (94), one end of the shifting rod (2) is rotatably accommodated in the fixing frame (14), and the other end thereof is sealed through the second sleeve portion (92).

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