Anti-drop device and liquid level switch

Abstract

The application provides a kind of anti-falling device and liquid level switch, comprising: main body and rotating connecting piece;The first part of main body is used to be connected with water tank, the second part of main body is located in water tank and is rotatably connected with one end of rotating connecting piece, the other end of rotating connecting piece is used to connect float ball, and inside float ball is provided with inductive device;The second part of main body is also used to connect sensing element, when the liquid level in water tank is lower than preset liquid level, float ball drives rotating connecting piece to rotate relative to the second part of main body and descend, and inductive device is disconnected with sensing element;When the liquid level in water tank reaches preset liquid level, float ball drives rotating connecting piece to rotate relative to the second part of main body and rise, and inductive device is electrically connected with sensing element.The application can enhance the connection strength of float ball and main body, reduce the risk of float ball falling off, and improve the reliability of liquid level switch.

Description

Technical Field

[0001] This application relates to the field of anti-detachment devices, and in particular to an anti-detachment device and a liquid level switch. Background Technology

[0002] In the cigarette manufacturing workshop, the odor removal system is an important part of ensuring the production environment and product quality. As a key component, the water tank generally stores treated liquid that meets certain water quality requirements and can absorb and dissolve odor impurities.

[0003] To ensure the liquid level in the water tank is appropriate, a level switch is typically used for level control. In related technologies, the main body of the level switch is located inside the water tank, and a hole is provided at the connection point between the main body and a float. The float is connected to this hole, and water causes the float to rise and approach a sensing element, influencing the electrical signal. However, the connection strength between the float and the main body is relatively weak, resulting in low reliability of the level switch. Utility Model Content

[0004] This application provides an anti-detachment device and a level switch, which can enhance the connection strength between the float and the main body, reduce the risk of the float falling off, and improve the reliability of the level switch.

[0005] The first aspect of this application provides an anti-detachment device, which is installed in a water tank. The anti-detachment device includes a main body and a rotating connecting member.

[0006] The first part of the main body is used to connect to the water tank, the second part of the main body is located inside the water tank and is rotatably connected to one end of the rotating connector, the other end of the rotating connector is used to connect to the float, and the float is provided with a sensing device inside;

[0007] The second part of the main body is also used to connect a sensing element. When the liquid level in the water tank is lower than the preset liquid level, the float drives the rotating connector to rotate and descend relative to the second part of the main body, and the sensed device is disconnected from the sensing element. When the liquid level in the water tank reaches the preset liquid level, the float drives the rotating connector to rotate and rise relative to the second part of the float, and the sensed device is electrically connected to the sensing element.

[0008] In one embodiment, the rotating connector includes a fixed block and a connecting rod, the fixed block being rotatably connected to a second part of the main body, the connecting rod being connected to the fixed block, and the float being connected to the end of the connecting rod away from the fixed block.

[0009] In one embodiment, the fixing block includes a semi-ring structure, the fixing block surrounds at least a portion of the outer periphery of the second part of the body, and the side of the fixing block facing the sensing element is an open structure.

[0010] In one embodiment, a plurality of bolts are also included, and a plurality of threaded holes are provided on the outer wall surface of the second part of the main body, and the bolts are correspondingly connected to the threaded holes.

[0011] In one embodiment, a wear-resistant bushing is provided at the rotatable connection between the fixing block and the second part of the main body;

[0012] And / or, the connecting end of the connecting rod and the float is provided with a slot, and the top of the float is provided with a buckle that matches the slot, and the buckle is engaged in the slot.

[0013] In one embodiment, the sensing element is arranged at intervals with at least a portion of the connecting rod along the radial direction of the body;

[0014] When the rotating connector drives the float to rise to the preset liquid level, the sensing element stops the connecting rod.

[0015] In one embodiment, when the float drives the rotating connector to rise to the preset liquid level, the sensing element is parallel to the connecting rod.

[0016] In one embodiment, when the float rotates in a direction away from the sensing element, the float causes the rotating connector to descend.

[0017] When the float rotates in the direction close to the sensing element, the float causes the rotating connector to rise.

[0018] A second aspect of this application provides a liquid level switch, including a float, a sensing element, and an anti-detachment device, wherein the float contains a sensing device.

[0019] The float is connected to the connecting rod of the anti-detachment device, and the sensing element is connected to the second part of the main body of the anti-detachment device.

[0020] In one embodiment, the sensing element includes a magnetic sensing element; and / or, the sensed device includes a permanent magnetic element.

[0021] The anti-detachment device and level switch provided in this application embodiment connect the float to the main body via a rotating connector. This helps to reduce the problems of poor connection stability and low connection strength caused by the float being directly connected to the hole in the main body in related technologies, reducing the risk of the float falling off, thereby enhancing the connection strength between the float and the main body and improving the reliability of the level switch. In addition, by setting the rotating connector to be rotatably connected to the main body, the movement of the rotating connector is unrestricted, which helps to ensure that the float can drive the rotating connector to move up and down with the rise and fall of the water level, improving the detection accuracy of the level switch. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of the liquid level switch provided in the embodiments of this application. Figure 1 .

[0024] Figure 2 A schematic diagram of the structure of the liquid level switch provided in the embodiments of this application. Figure 2 .

[0025] Figure 3 This is a schematic diagram of the anti-detachment device provided in an embodiment of this application.

[0026] Figure 4 This is a structural schematic diagram of the anti-detachment device provided in an embodiment of this application from another perspective.

[0027] Figure 5 This is a structural schematic diagram from another perspective of the anti-detachment device provided in the embodiments of this application.

[0028] Figure 6 This is a cross-sectional view of the anti-detachment device provided in the embodiments of this application.

[0029] Figure 7 This is a schematic diagram of the main body of the anti-detachment device provided in the embodiments of this application.

[0030] Figure label:

[0031] 100. Anti-detachment device;

[0032] 110. Main body; 111. First part of the main body; 112. Second part of the main body; 113. Threaded hole; 114. Water tank connecting bolt;

[0033] 120. Rotating connector; 121. Fixing block; 122. Connecting rod;

[0034] 130. Bolts;

[0035] 200. Liquid level switch;

[0036] 210. Float; 220. Sensing element. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0038] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0041] In related technologies, a small hole is provided at the connection point between the main body and the float, and the float's hook engages with the hole to connect to the main body. However, this method is not stable enough in actual use; the float is prone to detachment, reducing the reliability of the level switch.

[0042] To address the aforementioned issues, this application provides an anti-detachment device and a level switch. The float is connected to the main body via a rotating connector, which helps reduce the problems of poor connection stability and low connection strength caused by the float being directly connected to the hole in the main body in related technologies. This reduces the risk of the float detaching, thereby enhancing the connection strength between the float and the main body and improving the reliability of the level switch. Furthermore, by providing a rotating connector that is rotatably connected to the main body, the movement of the rotating connector is unrestricted, thus ensuring that the float can drive the rotating connector to move up and down with the water level, improving the detection accuracy of the level switch.

[0043] The following will combine Figure 1 and Figure 2 The specific structure of the liquid level switch provided in the embodiments of this application will be described.

[0044] Reference Figure 1 and Figure 2 As shown, this application embodiment provides a liquid level switch 200, including a float 210, a sensing element 220 and an anti-detachment device 100. The float 210 is provided with a sensing device inside. The float 210 is connected to the connecting rod 122 of the anti-detachment device 100, and the sensing element 220 is connected to the second part 112 of the main body of the anti-detachment device 100.

[0045] For example, the sensing element 220 can be a magnetic sensing element, and the sensed device can be a permanent magnetic element. This embodiment does not limit this.

[0046] It should be noted that the liquid level switch 200 provided in this embodiment is mainly used in the water tank of the silk making workshop. The water tank generally stores water that has been treated and meets certain water quality requirements, such as tap water or water treated by a greywater recycling system. Water is an important medium in the process of removing odors, and can absorb and dissolve odor impurities. In order to better remove odors, special chemical agents may be added to the water tank.

[0047] The detection principle of the liquid level switch 200 provided in this embodiment is as follows:

[0048] As the liquid level in the tank gradually rises to the preset level, based on Archimedes' principle, the float 210 experiences buoyancy, which is greater than its own weight. This causes the connecting rod 122 to rotate upwards around the second part 112 of the main body. As the float 210 rises, the permanent magnet gradually approaches the magnetic induction element on the main body. The magnetic induction element has a specific magnetic field induction threshold, set according to the design requirements of the liquid level switch 200 and the actual application scenario. When the distance between the permanent magnet and the magnetic induction element reaches this threshold, the magnetic field environment around the magnetic induction element changes, triggering the internal circuit to conduct and outputting a liquid level arrival signal. This signal is transmitted to a connected control system, such as the control center of an odor removal system, so that the system can take appropriate actions based on the liquid level, such as stopping water filling the tank, to ensure the liquid level remains within a suitable range and guarantee the stable operation of the odor removal system.

[0049] As the water level in the tank drops, the buoyancy of the float 210 decreases. Because the float's own weight exceeds the buoyancy, it causes the connecting rod 122 to rotate downwards. During this process, the permanent magnet moves away from the magnetic induction element along with the float 210, and the magnetic field strength around the magnetic induction element gradually decreases. When the magnetic field strength falls below the trigger threshold, the internal circuitry of the magnetic induction element changes, and the electrical signal is disconnected. At this point, the control system receives the disconnected electrical signal and can make corresponding decisions, such as activating the water filling device to replenish water in the tank, maintaining the water level within the normal operating range and ensuring the continued effective operation of the odor removal system.

[0050] Therefore, by setting the liquid level switch 200, the liquid level in the water tank can be detected in a timely manner. On the one hand, this helps to reduce the risk that the water pump may run dry and damage the equipment if the liquid level is too low. On the other hand, it helps to reduce the problem that water may overflow the water tank if the liquid level is too high, which may affect the production environment.

[0051] To improve the connection strength between the float 210 and the main body, this application embodiment provides an anti-detachment device 100, referring to... Figure 1 and Figure 2 As shown, the anti-detachment device 100 may include a main body 110 and a rotating connector 120. The first part 111 of the main body is used to connect to the water tank, and the second part 112 of the main body is located inside the water tank and is rotatably connected to one end of the rotating connector 120. The other end of the rotating connector 120 is used to connect to the float 210, and the float 210 is provided with a sensing device inside.

[0052] The second part 112 of the main body is also used to connect the sensing element 220. When the liquid level in the water tank is lower than the preset liquid level, the rotating connector 120 drives the float 210 to rotate and descend relative to the second part 112 of the main body, and the sensing device and the sensing element 220 are disconnected from each other. When the liquid level in the water tank reaches the preset liquid level, the rotating connector 120 drives the float 210 to rotate and rise relative to the second part of the float 210, and the sensing device and the sensing element 220 are electrically connected.

[0053] It should be noted that, during actual installation, the first part 111 of the main body of the anti-detachment device 100 is connected to the water tank. For example, the side wall of the water tank has a water tank threaded hole, and the first part 111 of the main body is provided with a water tank connecting bolt 114, which is connected to the water tank threaded hole. This embodiment does not limit this aspect.

[0054] The rotating connector 120 causes the float 210 to rotate and descend relative to the second part 112 of the main body. The extension direction of the connecting rod 122 and the extension direction of the second part 112 of the main body form an angle, which is generally less than 90°. This reduces the risk of the rotating connector 120 breaking due to an excessively large angle between it and the main body 110. It is understood that the float 210 rotates and descends under the influence of gravity.

[0055] When the rotating connector 120 causes the float 210 to rotate and rise relative to the second part of the float 210, the extension direction of the connecting rod 122 is parallel to the extension direction of the second part 112 of the main body. It can be understood that the float 210 rises under the action of buoyancy.

[0056] The other end of the rotating connector 120 can be rigidly connected to the float 210, which helps to improve the connection strength of the float 210; or, the sensing element 220 can also be rigidly connected to the second part 112 of the main body, which improves the connection strength between the sensing element 220 and the main body 110.

[0057] The main body 110 is rotatably connected to the rotating connector 120, and the method of rotational connection is not limited. For example, the main body 110 and the rotating connector 120 can be rotatably connected by threads and bolts, or the main body 110 and the rotating connector 120 can be hinged. This embodiment does not limit this.

[0058] Therefore, in this embodiment, by setting a rotating connector 120, the float 210 and the main body 110 are connected through the rotating connector 120. This helps to reduce the problems of poor connection stability and low connection strength caused by the float 210 being directly connected to the hole in the main body 110 in related technologies, reducing the risk of the float 210 falling off, thereby enhancing the connection strength between the float 210 and the main body 110 and improving the reliability of the level switch 200. By setting the rotating connector 120 to be rotatably connected to the main body 110, the movement of the rotating connector 120 is unrestricted, which helps to ensure that the float 210 can drive the rotating connector 120 to move up and down with the rise and fall of the water level, improving the detection accuracy of the level switch 200.

[0059] In some embodiments, reference is made to Figures 3 to 5 As shown, the rotating connector 120 may include a fixed block 121 and a connecting rod 122. The fixed block 121 is rotatably connected to the second part 112 of the main body, the connecting rod 122 is connected to the fixed block 121, and the float 210 is connected to the end of the connecting rod 122 away from the fixed block 121.

[0060] The fixing block 121 is rotatably connected to the main body 110, providing a stable foundation for the entire structure. Compared with the main body 110 being directly connected to the float 210, it can better disperse the force on the float 210 in the water and reduce the loosening of the connection point due to uneven force.

[0061] The connecting rod 122 connects the fixed block 121 and the float 210, transferring the weight and buoyancy of the float 210 to the fixed block 121, making the connection structure more stable, reducing the risk of the float 210 falling off, and improving the reliability of liquid level detection.

[0062] In some embodiments, reference is made to Figure 1 and Figure 2 As shown, the fixing block 121 can be a semi-ring structure. The fixing block 121 surrounds at least part of the outer periphery of the second part 112 of the main body, and the side of the fixing block 121 facing the sensing element 220 is an open structure.

[0063] The semi-ring structure, when enclosing the main body 110, simplifies the installation process. Compared to the integral structure, the semi-ring structure does not require installation from one end of the main body 110; it can be installed directly from the side, reducing installation difficulty and facilitating inspection, maintenance, or replacement. Furthermore, it effectively reduces the contact area between the fixing block 121 and the main body 110, thereby reducing friction during rotation.

[0064] Since the side of the fixed block 121 facing the sensing element 220 is open, the obstruction or interference of the magnetic field between the sensing device inside the sensing element 220 and the float 210 is reduced, making it smoother when the float 210 drives the connecting rod 122 and the fixed block 121 to rotate.

[0065] In some embodiments, reference is made to Figure 1 and Figure 3 As shown, it may also include multiple bolts 130, see reference. Figure 6 As shown, the outer wall surface of the second part 112 of the main body is provided with multiple threaded holes 113, and the bolts 130 are connected to the threaded holes 113 respectively.

[0066] It should be noted that the bolt 130 used in this embodiment has a semi-threaded structure, with threads on the outer end and no threads on the inner end. The threaded hole 113 is also semi-threaded, with a larger inner end and a smaller outer end with threads. The outer end hole diameter is the same as the bolt 130 diameter. When the bolt 130 and the threaded hole 113 are engaged, the outer thread of the bolt 130 reaches the large unthreaded hole at the inner end of the threaded hole 113, and the unthreaded inner end of the bolt 130 is located on the outside of the threaded hole 113. It is then fastened to the outside of the main body 110 with the fixing block 121, thereby realizing the up-and-down swing of the connecting rod 122.

[0067] In some embodiments, a wear-resistant bushing may be provided at the rotatable connection between the fixed block 121 and the second part 112 of the main body, which can effectively reduce frictional loss when the two rotate relative to each other. For example, the wear-resistant bushing may be made of wear-resistant materials such as polytetrafluoroethylene or bronze, which have a low coefficient of friction and good wear resistance, enabling the device to operate stably for a long time and reducing maintenance costs.

[0068] In this embodiment, the connecting end of the connecting rod 122 and the float 210 can be provided with a slot, and the top of the float 210 can be provided with a buckle that matches the slot, and the buckle is engaged in the slot. The slot and the buckle fit tightly together, which can reduce the float 210 from falling off in the water due to external forces such as buoyancy and water flow impact.

[0069] In some embodiments, reference is made to Figure 1 As shown, along the radial direction of the main body 110, the sensing element 220 and the connecting rod 122 are arranged at intervals; when the float 210 drives the rotating connecting member 120 to rise to the preset liquid level, the sensing element 220 stops the connecting rod 122.

[0070] It should be noted that during the liquid level detection process, the sensing element 220 needs to accurately receive the signal from the sensing device inside the float 210. The connecting rod 122 may vibrate or displace when it moves with the float 210. Therefore, by setting the sensing element 220 and the connecting rod 122 to be arranged at intervals, it is helpful to reduce the impact of the movement of the connecting rod 122 on the signal reception of the sensing element 220 and improve the accuracy of liquid level detection.

[0071] When the float 210 drives the rotating connector 120 to rise to the preset liquid level, the sensing element 220 stops the connecting rod 122. By controlling the rising height of the float 210, the distance between the sensed device inside the float 210 and the sensing element 220 remains consistent when the liquid level reaches the preset level. The stable relative position allows the sensing element 220 to trigger the electrical signal conduction under the same magnetic field strength, outputting an accurate liquid level arrival signal, further improving the reliability of liquid level detection.

[0072] In some embodiments, when the float 210 drives the rotating connector 120 to rise to a preset liquid level, the sensing element 220 is parallel to the connecting rod 122.

[0073] The parallel arrangement ensures a more stable relative position between the sensed device and the sensing element 220 inside the float 210, allowing the distance between them to be controlled within the magnetic field sensing range at the preset liquid level. However, if the sensing element 220 is not parallel to the connecting rod 122 when the float 210 rises to the preset liquid level, the connecting rod 122 may exert a lateral force on the sensing element 220. Over time, this could damage or displace the sensing element 220, affecting the accuracy of the liquid level detection.

[0074] In some embodiments, when the float 210 rotates in a direction away from the sensing element 220, the float 210 causes the rotating connector 120 to descend; when the float 210 rotates in a direction close to the sensing element 220, the float 210 causes the rotating connector 120 to rise.

[0075] The float 210's rotation, moving closer to or further away from the sensing element 220 according to changes in the liquid level, directly and clearly reflects the rise or fall of the liquid level inside the water tank. For example, when the liquid level rises, the float 210 rotates towards the sensing element 220 due to buoyancy, causing the rotating connector 120 to rise. This brings the sensed device inside the float 210 closer to the sensing element 220 until a preset liquid level is reached, triggering a change in the electrical signal. Conversely, when the liquid level falls, the float 210 rotates away from the sensing element 220 due to its own weight, causing the rotating connector 120 to fall. The sensed device moves away from the sensing element 220, and the electrical signal changes accordingly.

[0076] This embodiment provides an anti-detachment device and a level switch. The float is connected to the main body via a rotating connector, which helps to reduce the problems of poor connection stability and low connection strength caused by the float being directly connected to the hole in the main body in related technologies. This reduces the risk of the float falling off, thereby enhancing the connection strength between the float and the main body and improving the reliability of the level switch. In addition, by setting the rotating connector to rotate with the main body, the movement of the rotating connector is unrestricted, which helps to ensure that the float can drive the rotating connector to move up and down with the rise and fall of the water level, improving the detection accuracy of the level switch.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An anti-detachment device, characterized in that, The anti-detachment device, installed in the water tank, includes a main body and a rotating connecting part; The first part of the main body is used to connect to the water tank, the second part of the main body is located inside the water tank and is rotatably connected to one end of the rotating connector, the other end of the rotating connector is used to connect to the float, and the float is provided with a sensing device inside; The second part of the main body is also used to connect a sensing element. When the liquid level in the water tank is lower than the preset liquid level, the float drives the rotating connector to rotate and descend relative to the second part of the main body, and the sensed device is disconnected from the sensing element. When the liquid level in the water tank reaches the preset liquid level, the float drives the rotating connector to rotate and rise relative to the second part of the float, and the sensed device is electrically connected to the sensing element.

2. The anti-detachment device according to claim 1, characterized in that, The rotating connector includes a fixed block and a connecting rod. The fixed block is rotatably connected to the second part of the main body, the connecting rod is connected to the fixed block, and the float is connected to the end of the connecting rod away from the fixed block.

3. The anti-detachment device according to claim 2, characterized in that, The fixing block includes a semi-ring structure, the fixing block surrounds at least part of the outer periphery of the second part of the main body, and the side of the fixing block facing the sensing element is an open structure.

4. The anti-detachment device according to claim 3, characterized in that, It also includes multiple bolts, and the outer wall surface of the second part of the main body has multiple threaded holes, and the bolts are connected to the threaded holes accordingly.

5. The anti-detachment device according to any one of claims 2-4, characterized in that, A wear-resistant bushing is provided at the rotatable connection between the fixing block and the second part of the main body; And / or, the connecting end of the connecting rod and the float is provided with a slot, and the top of the float is provided with a buckle that matches the slot, and the buckle is engaged in the slot.

6. The anti-detachment device according to any one of claims 2-4, characterized in that, Along the radial direction of the main body, the sensing elements and the connecting rods are arranged at intervals; When the float causes the rotating connector to rise to the preset liquid level, the sensing element stops the connecting rod.

7. The anti-detachment device according to claim 6, characterized in that, When the float causes the rotating connector to rise to the preset liquid level, the sensing element is parallel to the connecting rod.

8. The anti-detachment device according to claim 6, characterized in that, When the float rotates in a direction away from the sensing element, the float causes the rotating connector to descend. When the float rotates in the direction close to the sensing element, the float causes the rotating connector to rise.

9. A liquid level switch, characterized in that, Includes a float, a sensing element, and an anti-detachment device as described in any one of claims 1-8, wherein the float is provided with a sensing device inside; The float is connected to the connecting rod of the anti-detachment device, and the sensing element is connected to the second part of the main body of the anti-detachment device.

10. The level switch according to claim 9, characterized in that, The sensing element includes a magnetic sensing element; and / or, the sensed device includes a permanent magnetic element.

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