A kind of float anti-winding anti-jamming protection device for water pump control

Abstract

The utility model discloses a kind of for the float of pumping control on anti-entangling anticlogging protection device, it is related to industrial control equipment technical field, including to be measured water-collecting pool, to control pumping start-stop float ball liquid level switch is equipped with above to-be-measured water-collecting pool, float ball liquid level switch is electrically connected with pumping, float ball liquid level switch includes switch assembly, connecting rope, float ball and control assembly, the switch assembly on float ball liquid level switch is connected with float ball by connecting rope, float ball floats on the liquid level of to-be-measured water-collecting pool, float ball vertically moves up and down with the liquid level of to-be-measured water-collecting pool, and the closure or disconnection of switch assembly is triggered by the action force of float ball, protection device is placed in to-be-measured water-collecting pool, protection device is sleeved in the periphery of float ball, and float ball is limited in certain range by protection device, prevent float ball from floating disorderly and thereby entangle upper foreign matter to cause the free floating of float ball to be blocked and thereby unable to accurately reflect real liquid level condition.

Description

Technical Field

[0001] This utility model belongs to the field of industrial control equipment technology, and specifically relates to a float anti-entanglement and anti-jamming protection device for water pump control. Background Technology

[0002] In various drainage, water supply, and liquid level control systems, float-type liquid level switches are widely used due to their simple structure, low cost, and high reliability. Their basic working principle is as follows: a float that floats freely up and down with the liquid level drives an internal mechanical structure or magnetic switch to connect or disconnect the circuit at preset liquid level points (e.g., high-level start, low-level stop), thereby achieving automatic start and stop control of the water pump. However, under complex operating conditions, the float and its connecting cable are easily entangled by debris during the fluctuations of the liquid level and its own oscillation. Once entanglement occurs, the free floating of the float will be severely hindered, causing it to fail to accurately reflect the true liquid level. This can lead to minor pump malfunctions (e.g., failing to stop when it should, resulting in dry pumping; or failing to start when it should, resulting in overflow), or even complete failure due to the float being "tied up," paralyzing the entire automatic control system.

[0003] To address the aforementioned problems, common improvement solutions include: 1. Using a non-contact level sensor. While this method fundamentally avoids the entanglement and jamming problems caused by physical contact, its cost is far higher than that of a float switch, and its installation and debugging are more complex. Furthermore, its measurement accuracy is easily affected under certain operating conditions (such as foam, steam, or changes in media properties). 2. Adding a protective cover to the float. This method can block large debris to some extent, but its effectiveness against thin fibers and hair is limited. The protective cover itself may also become a new entanglement point and increases the volume of the float, making it more prone to jamming in confined spaces.

[0004] Based on the above, there is an urgent need to design a float anti-entanglement and anti-jamming protection device for water pump control. Utility Model Content

[0005] The purpose of this utility model is to provide a float anti-entanglement and anti-jamming protection device for water pump control, thereby overcoming the defects of the prior art. By setting a protective device around the float to limit its movement direction and protect the float body, it prevents the inability to accurately control the normal operation of the switch due to foreign objects becoming entangled. The specific technical solution is as follows: A float anti-entanglement and anti-jamming protection device for water pump control includes a water collection tank to be tested. A float level switch for controlling the start and stop of the water pump is provided above the water collection tank. The float level switch is electrically connected to the water pump. A float is connected to the switch assembly of the float level switch by a connecting rope. The float floats on the liquid surface of the water collection tank to be tested. A protection device is placed inside the water collection tank to be tested, and the protection device is sleeved around the float.

[0006] Preferably, the protective device includes a cylindrical sleeve and a counterweight ring fitted on the cylindrical sleeve. The cylindrical sleeve is placed vertically in the water collection tank to be tested. The cylindrical sleeve is located directly below the float and is fitted around the float, confining the float inside the sleeve.

[0007] Preferably, the cylindrical sleeve has a plurality of mesh holes, which are used to communicate with the water collection tank to be tested.

[0008] Preferably, the cylindrical sleeve is made of stainless steel.

[0009] Preferably, the mesh diameter is 5mm.

[0010] Preferably, the float level switch further includes a control component, the switch component is mounted on the control component, and the control component is electrically connected to the water pump.

[0011] Preferably, the bottom of the cylindrical sleeve is also provided with a limiting block.

[0012] Preferably, a plurality of counterweight rings are fitted onto the cylindrical sleeve.

[0013] Compared with existing technologies, this utility model has the following beneficial effects: 1. This utility model provides a float anti-entanglement and anti-jamming protection device for water pump control. The protection device is sleeved on the outer periphery of the float and restricts the float within a certain range to prevent the float from floating randomly and getting entangled with foreign objects, which would hinder the free floating of the float and make it unable to accurately reflect the true liquid level.

[0014] 2. The protective device in this utility model has a simple structure and is easy to install. A counterweight ring can be added according to the water depth and flow rate of the water collection pool to ensure that it can be stably placed in the pool. At the same time, the protective device is designed with a hollow structure to ensure that the water level inside the cylinder is consistent with the water level of the water collection pool to ensure the accuracy of the float control effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.

[0016] Figure 1 This is a front view of the overall installation structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the protective device structure of this utility model.

[0018] Figure 3 This is an exploded view of the protective device of this utility model.

[0019] Explanation of key figure labels: 100-Water collection tank to be tested, 200-Water pump, 300-Float level switch, 310-Switch assembly, 320-Connecting rope, 330-Float, 340-Control assembly, 400-Protective device, 410-Cylindrical sleeve, 411-Mesh, 412-Limit block, 420-Counterweight ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0024] Example like Figures 1 to 3 As shown, a float anti-entanglement and anti-jamming protection device for water pump control includes a water collection tank 100 to be tested. A float level switch 300 for controlling the start and stop of the water pump 200 is installed above the water collection tank 100. Notably, the float level switch 300 is mounted above the water collection tank 100 via a mounting bracket. The float level switch 300 is electrically connected to the water pump 200. The float level switch 300 is known prior art, so its specific principle and structure will not be elaborated upon. The float level switch 300 includes a switch assembly 310, a connecting rope 320, a float 330, and a control assembly 340. The switch on the float level switch 300... A float 330 is connected to component 310 via a connecting rope 320. The float 330 floats on the liquid surface of the water collection tank 100 to be tested. The float 330 moves vertically up and down as the liquid level in the water collection tank 100 rises and falls. The force of the float 330 triggers the closing or opening of the switch component 310. A protective device 400 is installed inside the water collection tank 100 to be tested. The protective device 400 is sleeved around the float 330 and restricts the float 330 within a certain range to prevent the float 330 from floating randomly and getting entangled in foreign objects, which would hinder the free floating of the float 330 and make it unable to accurately reflect the true liquid level.

[0025] In some preferred embodiments, the protective device 400 includes a cylindrical sleeve 410 and a counterweight ring 420 sleeved on the cylindrical sleeve 410. The bottom of the cylindrical sleeve 410 is also provided with a limiting block 412. It is worth mentioning that several counterweight rings 420 can be configured as needed. The setting of the counterweight rings 420 ensures that the cylindrical sleeve 410 remains stable and does not change position due to liquid flow, thus affecting the protection of the float 330. The cylindrical sleeve 410 is placed vertically in the water collection tank 100 to limit the movement direction of the float 330 (it can only move in the vertical direction) and avoid movement deviation from affecting the control effect. The cylindrical sleeve 410 is located directly below the float 330 and is sleeved around the float 330, confining the float 330 inside the sleeve. The cylindrical sleeve 410 features a perforated structure, specifically with several mesh holes 411 approximately 5mm in diameter to prevent foreign objects from entering and obstructing the movement of the float 330. These mesh holes 411 connect the sleeve to the test water collection tank 100, ensuring the water level inside the sleeve 410 matches the external water level (in the test water collection tank 100). The sleeve 410 is made of stainless steel, ensuring long-term use in humid environments. This protection device 400 is suitable for use in condensate and circulating water collection tanks in thermal power plants. It can be directly installed on existing float control components without modifying the water pump control system, effectively reducing float jamming failures by over 90% after installation.

[0026] In some preferred embodiments, the float level switch 300 includes a switch assembly 310, a connecting rope 320, a float 330, and a control assembly 340, wherein: The float 330 is made of a material with a density less than that of liquid, ensuring that the float 330 can float on the liquid surface of the water collection tank 100 to be tested and move up and down with the change of liquid level. The float 330 is stably connected to the switch assembly 310 through the connecting rope 320 to avoid the float 330 floating randomly due to the movement of liquid surface, which would result in poor control effect. The control component 340 includes a circuit board, etc., for controlling the operation of the switch; The switch assembly 310 is typically a reed switch. When the float 330 rises or falls to a specific position, it triggers the opening and closing of the switch, thereby outputting a control signal.

[0027] Next, the specific implementation methods in this embodiment will be described in detail to enable those skilled in the art to better understand this utility model: Sufficient counterweight rings 420 are set according to the water depth and water flow velocity of the water collection pool 100 to be tested. Then, the assembled protective device 400 is directly put into the water collection pool 100 to be tested and is located directly below the float 330, ensuring that the float 330 is enclosed in the cylindrical sleeve 410.

[0028] Regularly inspect and clean the protective device 400 to ensure it is in good condition.

[0029] In summary, this utility model provides a float anti-entanglement and anti-jamming protection device for water pump control. This protection device is fitted around the float and confines the float within a certain range, preventing it from floating erratically and getting entangled in foreign objects, thus hindering its free floating and preventing it from accurately reflecting the true liquid level. The protection device has a simple structure and is easy to install. A counterweight ring can be added according to the water depth and flow rate of the water collection tank to ensure stable placement in the tank. Furthermore, the device's hollow structure ensures that the water level inside the cylinder matches the water level in the water collection tank, guaranteeing accurate float control.

[0030] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A float anti-entanglement and anti-jamming protection device for water pump control, comprising a water collection tank (100) to be measured, characterized in that, Above the water collection tank (100) to be tested is a float level switch (300) for controlling the start and stop of the water pump (200). The float level switch (300) is electrically connected to the water pump (200). A float (330) is connected to the switch assembly (310) on the float level switch (300) via a connecting rope (320). The float (330) floats on the liquid surface of the water collection tank (100) to be tested. A protective device (400) is installed inside the water collection tank (100) to be tested. The protective device (400) is sleeved around the float (330).

2. A device for preventing entanglement and jamming of a float on a pump control according to claim 1, characterized in that The protective device (400) includes a cylindrical sleeve (410) and a counterweight ring (420) sleeved on the cylindrical sleeve (410). The cylindrical sleeve (410) is placed vertically inside the water collection tank (100) to be tested. The cylindrical sleeve (410) is located directly below the float (330) and is sleeved around the float (330), thus confining the float (330) inside the sleeve.

3. A device for preventing entanglement and jamming of a float on a pump control according to claim 2, characterized in that The cylindrical sleeve (410) has a plurality of mesh holes (411) through which it communicates with the water collection pool (100) to be tested.

4. A device for preventing entanglement and jamming of a float on a pump control according to claim 3, characterized in that The cylindrical sleeve (410) is made of stainless steel.

5. A float anti-entanglement and anti-jamming protection device for water pump control according to claim 3, characterized in that, The diameter of the mesh (411) is 5 mm.

6. A float anti-entanglement and anti-jamming protection device for water pump control according to claim 1, characterized in that, The float level switch (300) also includes a control component (340), the switch component (310) is mounted on the control component (340), and the control component (340) is electrically connected to the water pump (200).

7. A float anti-entanglement and anti-jamming protection device for water pump control according to claim 2, characterized in that, The bottom of the cylindrical sleeve (410) is also provided with a limiting block (412).

8. A float anti-entanglement and anti-jamming protection device for water pump control according to claim 2, characterized in that, A plurality of counterweight rings (420) are fitted on the cylindrical sleeve (410).

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