Magnetic type floating ball liquid level switch

Abstract

The utility model relates to the technical field of liquid level measurement, in particular to a magnetic type floating ball liquid level switch, which is characterized in that circuit elements do not need to be replaced, only a hollow floating ball needs to be replaced, and the replacement cost is reduced under relatively severe application conditions; the moving direction of the transmission rod is limited by arranging the limiting sliding sleeve, toppling and horizontal swinging of the transmission rod caused by fluctuation of the liquid level are prevented, and use is more stable; the magnetic sensors are arranged at the upper end and the lower end of the side face of the installation box respectively, the magnetic sensors drive the rotating lead screws to rotate through the rotating hand wheels so as to move up and down, and therefore the detection range of the liquid level switch can be adjusted; compared with a traditional electronic element with a contact, the electronic element is long in service life and capable of acting frequently.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level measurement, in particular to a magnetic floating ball liquid level switch. Background Art

[0002] The float type liquid level switch is a liquid level control device with a simple structure and easy use. It has no complicated circuits and will not be interfered with. As long as the material is selected correctly, it can be used for any liquid, pressure, and temperature. Therefore, it has been widely used. However, the float type liquid level switch is designed based on the principle of gravity and buoyancy. It mainly includes a float body, a large-capacity micro switch set in the float body, and a driving mechanism that can turn the switch on and off. These mechanisms are used to detect the water level. This places high demands on the capacity and number of actions of the electric shock. Moreover, the circuit is in the float body. Under extremely harsh conditions on site (strong acid and alkalinity), the service life of the switch will be greatly reduced, and the cost of replacement and maintenance is high. In addition, the fluctuation of the liquid level is prone to cause false operation. Summary of the invention

[0003] The utility model aims to provide a magnetic float liquid level switch to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetic float liquid level switch, comprising a water tank, a connecting frame, an installation box and a hollow float, a connecting frame is provided on one side of the top of the water tank, a mounting box is installed on the top of the connecting frame, a switch door is installed on the front of the mounting box, connecting plates are respectively installed on the top and bottom of the sides of the mounting box, a rotating screw rod is threadedly connected to the surface of the connecting plate, a rotating handwheel is connected to the top of the rotating screw rod, a fixing plate is connected to the bottom of the rotating screw rod, one end of the fixing plate is connected to the mounting frame inside the mounting box, a magnetic sensor is provided on the surface of the mounting frame, a transmission rod is provided at the bottom of the mounting box, the bottom end of the transmission rod is connected to a hollow float in the water tank, the top of the transmission rod is connected to the fixing frame, and the side of the fixing frame is connected to a magnet ball.

[0005] Preferably, slide grooves are provided at corresponding positions of the upper and lower ends of the inner cavity side walls of the installation box, the fixing plate is slidably engaged with the corresponding slide grooves, and the fixing plate passes through the slide grooves.

[0006] Preferably, the magnet ball corresponds to the position of the magnetic sensor in the vertical direction.

[0007] Preferably, the magnet ball is connected to the fixing frame via a spring.

[0008] Preferably, a limiting sliding sleeve is provided at the bottom of the installation box, and the limiting sliding sleeve passes through the bottom of the installation box, and the transmission rod is slidably connected with the limiting sliding sleeve.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: under relatively harsh application conditions, the utility model does not need to replace circuit components, only the hollow float ball needs to be replaced, thereby reducing the replacement cost; by setting a limit sleeve to limit the moving direction of the transmission rod, the transmission rod is prevented from tipping over and horizontally swinging due to liquid level fluctuations, and the use is more stable; by respectively setting magnetic sensors at the upper and lower ends of the side of the installation box, and the magnetic sensor drives the rotating screw to rotate by rotating the hand wheel to achieve the movement of the upper and lower positions, the detection range of the liquid level switch can be adjusted, and at the same time, the magnetic sensor and the magnetic ball are actuators of electronic contactless components, which have a longer service life than traditional electronic components with contacts and can be operated frequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 This is a schematic diagram of the rotary screw structure of the utility model;

[0012] Figure 3 It is a schematic diagram of the internal structure of the installation box of the utility model.

[0013] In the figure: 1. water tank; 2. connecting frame; 3. installation box; 4. hollow float; 5. transmission rod; 6. switch door; 7. connecting plate; 8. rotating screw; 9. rotating hand wheel; 10. fixing plate; 11. slide groove; 12. magnetic sensor; 13. limit sliding sleeve; 14. fixing frame; 15. spring; 16. magnetic ball; 17. installation frame. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] See also Figure 1-3 The utility model provides a technical solution: a magnetic float liquid level switch, comprising a water tank 1, a connecting frame 2, an installation box 3 and a hollow float 4, a connecting frame 2 is arranged on one side of the top of the water tank 1, a mounting box 3 is installed on the top of the connecting frame 2, a switch door 6 is installed on the front of the mounting box 3, a connecting plate 7 is respectively installed on the top and bottom of the side of the mounting box 3, a rotating screw rod 8 is threadedly connected to the surface of the connecting plate 7, a rotating hand wheel 9 is connected to the top of the rotating screw rod 8, a fixing plate 10 is connected to the bottom of the rotating screw rod 8, one end of the fixing plate 10 is connected to a mounting frame 17 inside the mounting box 3, a magnetic sensor 12 is arranged on the surface of the mounting frame 17, a transmission rod 5 is arranged at the bottom of the mounting box 3, the bottom end of the transmission rod 5 is connected to the hollow float 4 in the water tank 1, the top of the transmission rod 5 is connected to the fixing frame 14, and a magnetic ball 16 is connected to the side of the fixing frame 14.

[0018] Furthermore, slide grooves 11 are provided at corresponding positions of the upper and lower ends of the inner cavity side walls of the installation box 3 , and the fixing plate 10 is slidably engaged with the corresponding slide grooves 11 , and the fixing plate 10 passes through the slide grooves 11 .

[0019] Furthermore, the magnetic ball 16 corresponds to the position of the magnetic sensor 12 in the vertical direction.

[0020] Furthermore, the magnetic ball 16 is connected to the fixing frame 14 via a spring 15 .

[0021] Furthermore, a limiting sliding sleeve 13 is provided at the bottom of the installation box 3 , and the limiting sliding sleeve 13 passes through the bottom of the installation box 3 , and the transmission rod 5 is fitted and slidably connected with the limiting sliding sleeve 13 .

[0022] When the utility model is used under relatively harsh conditions, it is not necessary to replace circuit components, but only the hollow float ball needs to be replaced, thereby reducing the replacement cost; by setting a limit sleeve 13 to limit the moving direction of the transmission rod 5, the transmission rod 5 is prevented from tipping over and horizontally swinging due to liquid level fluctuations, and the use is more stable; by respectively setting magnetic sensors 12 at the upper and lower ends of the side of the installation box 3, and the magnetic sensor 12 drives the rotating screw 8 to rotate by rotating the hand wheel 9 to achieve the movement of the upper and lower positions, the detection range of the liquid level switch can be adjusted, and at the same time, the magnetic sensor 12 and the magnetic ball 16 are actuators of electronic contactless components, which have a longer service life than traditional electronic components with contacts and can be operated frequently.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic float liquid level switch, comprising a water tank (1), a connecting frame (2), a mounting box (3) and a hollow float (4), characterized in that: A connecting frame (2) is provided on one side of the top of the water tank (1), a mounting box (3) is installed on the top of the connecting frame (2), a switch door (6) is installed on the front of the mounting box (3), connecting plates (7) are respectively installed on the top and bottom of the side of the mounting box (3), a rotating screw (8) is threadedly connected to the surface of the connecting plate (7), a rotating hand wheel (9) is connected to the top of the rotating screw (8), a fixing plate (10) is connected to the bottom of the rotating screw (8), one end of the fixing plate (10) is connected to a mounting frame (17) inside the mounting box (3), a magnetic sensor (12) is provided on the surface of the mounting frame (17), a transmission rod (5) is provided at the bottom of the mounting box (3), a hollow floating ball (4) is connected to the bottom of the transmission rod (5) in the water tank (1), a fixing frame (14) is connected to the side of the fixing frame (14) .

2. The magnetic float liquid level switch according to claim 1, characterized in that: Slide grooves (11) are provided at corresponding positions of the upper and lower ends of the inner cavity side walls of the installation box (3); the fixing plate (10) is slidably engaged with the corresponding slide grooves (11), and the fixing plate (10) passes through the slide grooves (11).

3. The magnetic float liquid level switch according to claim 1, characterized in that: The magnetic ball (16) corresponds to the position of the magnetic sensor (12) in the vertical direction.

4. The magnetic float liquid level switch according to claim 1, characterized in that: The magnetic ball (16) is connected to the fixing frame (14) via a spring (15).

5. The magnetic float liquid level switch according to claim 1, characterized in that: A limiting sliding sleeve (13) is provided at the bottom of the installation box (3), and the limiting sliding sleeve (13) passes through the bottom of the installation box (3), and the transmission rod (5) is sleeved and slidably connected with the limiting sliding sleeve (13).

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