A new type of float switch

Abstract

The present invention provides a novel float switch, belonging to the technical field of float devices. It solves the problem that the existing float switch has a simple structure and is separately arranged from the cable, resulting in easy wiring errors. For this novel float switch, cable lines integrally inserted and formed are respectively installed at both ends of the float switch. The cable lines are connected to the float switch through connecting columns. The cable lines are connected to the inside of the float switch through the connecting columns and are electrically connected to the float switch. The float switch further includes a sealed housing with a water inlet cavity inside, a sealed top cover with a cavity I inside is arranged near the sealed housing, two mutually fitting and connected sealed skeletons are arranged between the sealed top cover and the sealed housing, and a sealed base is installed inside the sealed housing. The present invention integrates the float switch and the cable line, having the advantages of reducing manual wiring errors and making the connection more stable and convenient. In addition, it also has higher accuracy and stability.

Description

Technical Field

[0001] The present invention belongs to the technical field of float devices, relates to a float device, and particularly relates to a novel float switch. Background Art

[0002] At present, most of the water industry uses liquid level float switches to control the water level. The principle of the liquid level float switch is that the float rises and falls according to the rise and fall of the water level, thereby controlling the switch action inside the float switch to output a signal to control the operation of a water pump or other electrical components, ultimately meeting the needs of users. The float switch has a simple structure, reliable output and low cost, so it is widely used in places such as water treatment, clear water tanks, sewage tanks, liquid chemical raw materials, etc., providing a lot of convenience for industries such as water supply and drainage, sewage treatment, and chemical industry.

[0003] The liquid level float switch usually consists of a simple sealed housing, a float disposed inside the housing, and an associated micro switch. The common micro switch generally uses an elastic member with switch contacts. When the liquid level changes, due to the buoyancy force, the angular position of the float changes, causing the steel ball to roll inside the float. The gravity of the steel ball gives a pressure to the elastic member, ultimately controlling the on-off of the circuit.

[0004] The existing float switch applied to the working process of the water pump is connected to the water pump motor through an externally connected cable. Since the cable is an additional separate line, it is easy for the staff to make wiring mistakes during the wiring process, resulting in an incorrect working process. In addition, the staff will also encounter the phenomena of unstable wiring and long wiring time during the wiring process, which is very inconvenient. In addition, the internal structure of the existing float switch is simple. The reciprocating movement of the internal float directly controls the movement of the connecting rod to control the opening and closing of the micro switch. In this process, the movement of the float and the movement of the connecting rod do not have stability and accuracy, the sensitivity is not high, and the control response is slow. Summary of the Invention

[0005] The object of the present invention is to provide a novel float switch to solve the above problems existing in the prior art.

[0006] The object of the present invention can be achieved by the following technical solutions: A novel float switch, characterized in that cable wires integrally inserted and formed are respectively installed at both ends of the float switch, and the outer ends of the cable wires are electrically connected to a water pump motor. The cable wires are connected to the float switch through connecting columns. The cable wires are connected to the inside of the float switch through the connecting columns and are electrically connected to the float switch. The float switch further includes a sealed housing with a water inlet cavity inside, and a sealed top cover with a cavity I inside is arranged near the sealed housing. Two mutually attached and connected sealed skeletons are arranged between the sealed top cover and the sealed housing. A sealed base whose top is attached to the sealed housing is installed inside the sealed housing. Both ends of the sealed top cover and the sealed base extend outwards to have semi-cylindrical extending semi-cylinders. The extending semi-cylinders at both ends of the sealed top cover and the extending semi-cylinders at both ends of the sealed base are correspondingly joined to form an extending cylinder for the connecting column to extend into. A cavity II communicating with the cavity I in the sealed top cover is arranged inside the sealed base. The mutually attached and connected sealed top cover and sealed base make the cavity I and the cavity II form a closed cavity. A floating ball and a magnet which are mutually cooperatively connected are installed between the sealed base and the sealed housing inside the sealed housing. The floating ball inside the sealed housing can move up and down along the inner wall of the sealed housing to drive the magnet to move up and down. A micro switch, a connecting rod, and a magnet installed on the connecting rod and capable of magnetically attracting and sensing with the magnet are arranged in the closed cavity. A plurality of water through holes are opened at a position near the floating ball at the bottom of the sealed housing.

[0007] In the above-mentioned novel float switch, the micro switch is provided with a plug connector for connecting to the cable wire to connect the circuit.

[0008] In the above-mentioned novel float switch, the sealed skeleton is composed of a body hermetically wrapped outside the sealed base and sealed fixing covers arranged at both ends of the body for wrapping the connecting column inside. The sealed fixing covers are semi-cylindrical.

[0009] In the above-mentioned novel float switch, a plurality of fixing feet for fixing the micro switch are arranged in the closed cavity formed inside the sealed top cover and the sealed base.

[0010] Compared with the prior art, the novel float switch has the following advantages:

[0011] 1. The cable wire is integrated with the float switch. Compared with the additional separate connection of the traditional cable wire, it has the advantages of reducing manual wiring errors and making the connection more stable and convenient. At the same time, the float switch with the integrated cable wire is more widely suitable for the installation of various water pumps.

[0012] 2. By using the magnetic attraction method of magnetic blocks and iron blocks to control the movement of the connecting rod, the opening and closing of the microswitch can be controlled, which has higher accuracy and stability and improves sensitivity.

[0013] 3. The internal structure of this new type of float switch is optimized and improved. The main purpose is to protect the water pump motor and prevent it from being damaged due to working without water. While the structure is stable, the working efficiency is also significantly improved. Brief Description of the Drawings

[0014] Figure 1 It is a schematic three-dimensional structure diagram of this new type of float switch.

[0015] Figure 2 It is a schematic cross-sectional structure diagram of this new type of float switch.

[0016] In the figure, 1. Cable; 2. Connecting column; 3. Sealed housing; 4. Sealed top cover; 5. Sealed skeleton; 6. Sealed base; 7. Extended semi-cylindrical body; 8. Closed cavity; 9. Floating sphere; 10. Magnetic block; 11. Microswitch; 12. Connecting rod; 13. Magnet; 14. Water passing hole; 15. Plug; 16. Sealed fixing cover; 17. Fixed support foot. Detailed Embodiment

[0017] The following are specific embodiments of the present invention in combination with the drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0018] Such as Figure 1 、 Figure 2As shown in the figure, for this new type of float switch, cable wires 1 integrally inserted and formed are respectively installed at both ends of the float switch, and the outer ends of the cable wires 1 are electrically connected to the water pump motor. The cable wires 1 are connected to the float switch through connecting columns 2. The cable wires 1 are connected to the inside of the float switch through the connecting columns 2 and are electrically connected to the float switch. The float switch further includes a sealed housing 3 with a water inlet cavity inside. A sealed top cover 4 with a cavity 1 inside is arranged near the sealed housing 3. The inner end of the connecting column 2 extends into the sealed top cover 4. Two layers of mutually fitting and connected sealed skeletons 5 are arranged between the sealed top cover 4 and the sealed housing 3. A sealed base 6 with its top fitting and connected to the sealed housing 3 is installed inside the sealed housing 3. The two ends of the sealed top cover 4 and the sealed base 6 both extend outwards to have semi-cylindrical extension semi-cylinders 7. The extension semi-cylinders 7 at both ends of the sealed top cover 4 and the extension semi-cylinders 7 at both ends of the sealed base 6 are correspondingly joined to form an extension cylinder for the connecting column 2 to extend into. A cavity 2 communicating with the cavity 1 in the sealed top cover 4 is provided inside the sealed base 6. The mutually fitting and connected sealed top cover 4 and the sealed base 6 make the cavity 1 and the cavity 2 form a closed cavity 8. A floating ball 9 and a magnet 10 that are mutually cooperatively connected are installed between the sealed base 6 and the sealed housing 3 inside the sealed housing 3. The floating ball 9 inside the sealed housing 3 can rise and fall along the inner wall of the sealed housing 3, thereby driving the rise and fall of the magnet 10. A micro switch 11, a connecting rod 12, and a magnet 13 installed on the connecting rod 12 and capable of having a magnetic attraction induction with the magnet 10 are installed in the closed cavity 8. A plurality of water through holes 14 are opened at the bottom of the sealed housing 3 near the floating ball 9.

[0019] The working principle is as follows:

[0020] The water pump motor controls the water level depth. When the water level rises, the water inlet cavity is filled with water and pushes the floating ball 9 to rise. The rise of the floating ball 9 drives the magnet 10 to rise. When the magnet 10 rises to a corresponding position, a magnetic attraction reaction occurs with the magnet 13. Therefore, the magnet 13 moves towards the magnet 10, driving the connecting rod 12 to move. The connecting rod 12 pulls the switch contact on the micro switch 11, and the micro switch 11 closes to connect the cable wire 1 and connect the circuit, and the water pump works. When the water level drops, the floating ball 9 and the magnet 10 drop and reset. Due to the decrease in the distance attraction, the connecting rod 12 is bounced off by the switch contact and separated from the micro switch 11, and the water pump is powered off and stops working. This working process reciprocates in sequence with the rise and fall of the water level, protecting the water pump motor and preventing the water pump motor from being damaged due to working without water.

[0021] Preferably, the micro switch 11 has a plug connector 15 connected to the cable wire 1 for connecting the circuit.

[0022] Preferably, a plurality of fixing feet 17 for fixing the micro switch 11 are arranged in the closed cavity 8 formed inside the sealed top cover 4 and the sealed base 6.

[0023] To elaborate further, the sealing skeleton 5 is composed of a body that is hermetically wrapped around the outside of the sealing base 6 and sealing fixing covers 16 provided at both ends of the body for wrapping the connecting column 2 therein. The sealing fixing covers 16 are in a semi-cylindrical shape, and the sealing skeleton 5 is composed of two layers that are attached to each other. Therefore, the two semi-cylindrical sealing fixing covers 16 are attached to form an integral sealing fixing cover 16 in a cylindrical shape, and the connecting column 2 is wrapped therein through the integral sealing fixing cover 16.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A new type of float switch, characterized in that, Cable wires (1) integrally inserted and formed are respectively installed at both ends of the float switch, and the outer ends of the cable wires (1) are electrically connected to a water pump motor. The cable wires (1) are connected to the float switch through connecting columns (2). The cable wires (1) are connected to the inside of the float switch through the connecting columns (2) and are electrically connected to the float switch. The float switch further includes a sealed housing (3) with a water inlet cavity inside. A sealed top cover (4) with a cavity one inside is arranged near the sealed housing (3). Two mutually attached and connected sealed skeletons (5) are arranged between the sealed top cover (4) and the sealed housing (3). A sealed base (6) with its top attached to the sealed housing (3) is installed inside the sealed housing (3). The two ends of the sealed top cover (4) and the sealed base (6) both extend outwards to have semi-cylindrical extension semi-cylinders (7). The extension semi-cylinders (7) at both ends of the sealed top cover (4) and the extension semi-cylinders (7) at both ends of the sealed base (6) are correspondingly joined to form an extension cylinder for the connecting column (2) to extend into. A cavity two communicating with the cavity one in the sealed top cover (4) is inside the sealed base (6). The mutually attached and connected sealed top cover (4) and the sealed base (6) make the cavity one and the cavity two form a closed cavity (8). A floating sphere (9) and a magnetic block (10) which are mutually cooperated and connected are installed inside the sealed housing (3) between the sealed base (6) and the sealed housing (3). The floating sphere (9) inside the sealed housing (3) can move up and down along the inner wall of the sealed housing (3) to drive the up and down movement of the magnetic block (10). A micro switch (11), a connecting rod (12), and a magnet (13) installed on the connecting rod (12) and capable of magnetically attracting and sensing with the magnetic block (10) are installed inside the closed cavity (8). A plurality of water through holes (14) are opened at the bottom of the sealed housing (3) near the floating sphere (9); The micro switch (11) has a plug connector (15) connected to the cable wire (1) for connecting an electric circuit; The sealed skeleton (5) is composed of a body hermetically wrapped outside the sealed base (6) and sealed fixing covers (16) arranged at both ends of the body for wrapping the connecting column (2) inside. The sealed fixing covers (16) are semi-cylindrical; A plurality of fixing feet (17) for fixing the micro switch (11) are arranged in the closed cavity (8) formed inside the sealed top cover (4) and the sealed base (6); The sealed skeletons (5) are two mutually attached and connected layers. Therefore, the two semi-cylindrical sealed fixing covers (16) are joined to form an integral cylindrical sealed fixing cover (16). The connecting column (2) is wrapped inside through the integral sealed fixing cover (16) to form a waterproof and sealed structure.

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