A water-immersed tubular flow switch

By designing a water-immersed tubular flow switch and using a snap ring and snap hole structure to fix the switch body inside the pipe, the corrosion problem caused by exposure is solved, and convenient disassembly and assembly and sealing are achieved, thus extending the service life.

CN224437508UActive Publication Date: 2026-06-30SICHUAN DEMODA ELECTROMECHANICAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SICHUAN DEMODA ELECTROMECHANICAL TECH CO LTD
Filing Date
2025-08-13
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing flow switches are installed on the outside of the pipe, making them susceptible to external corrosion, which affects their sensitivity. Furthermore, repeated disassembly and reassembly can lead to loose pipe connections and leaks, and the disassembly and reassembly process is inconvenient.

Method used

A water-immersed tubular flow switch is designed. By combining the flow switch body, mounting ring and connecting pipe, the switch body is fixed inside the pipe by the snap-fit ​​structure of snap ring and snap hole to avoid exposure. The sealing gasket ensures the airtightness and enables convenient disassembly and assembly.

Benefits of technology

It extends the service life of the switch, avoids pipe damage caused by disassembly and assembly, and improves the convenience and sealing of installation.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of water flow switch technology, and in particular to a water-immersed tubular water flow switch, comprising a water flow switch body, a connecting pipe, and a pipeline. The water flow switch body has an installation ring in the middle, and sealing gaskets are fixedly installed at both ends of the water flow switch body. Connecting pipes are movably sleeved on the outer walls of both ends of the water flow switch body, and pipelines are fixedly sleeved on the outer walls of the connecting pipes. This device, by setting up a water flow switch body, an installation ring, and connecting pipes, fixes the connecting pipes at both ends of the pipeline installation position. The water flow switch body, located on both sides of the installation ring, is slidably inserted into the connecting pipes on both sides of the pipeline. The locking holes inside the retaining rings engage with the retaining heads, thereby achieving installation and fixation between the pipeline and the water flow switch body, preventing the switch body from being exposed outside the pipeline. The movable engagement between the installation ring and the retaining rings facilitates the removal and installation of the switch body from the pipeline.
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Description

Technical Field

[0001] This utility model relates to the field of water flow switch technology, specifically to a water-immersed tubular water flow switch. Background Technology

[0002] In water systems, flow switches can be used for water circulation control, inlet and outlet water control, water heating control, water pump on / off control, solenoid valve on / off control, or outlet power-off and outlet power-on control. When the water flow reaches a certain flow rate, the flow switch converts the water flow into a switching electrical signal, triggering subsequent control system actions.

[0003] Chinese utility model patent CN218094586U discloses a water flow switch, which includes "a body; a lever having a first end and a second end, the first end of the lever being connected to the body, and the second end of the lever being used to contact the water flow; and a resistance element disposed at the second end of the lever, the resistance element being used to increase the resistance of the lever to the water flow." This device increases the resistance of the lever to the water flow by setting a resistance element at the second end of the lever, ensuring the stability of the water flow switch signal. However, this device is installed on the outer wall of the water pipe, and the exposed device is easily corroded by the external environment, which can damage the sensor elements inside the switch and thus affect the sensitivity of use. Moreover, most water flow switches are installed between pipes. When it is necessary to install the water flow switch or adjust its internal components, it needs to be completely removed from the pipe. Each disassembly and reassembly will damage the pipe, and repeated installation may cause loosening and leakage at the connection, thus making the disassembly and reassembly process of the water flow switch inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a water-immersed tubular flow switch to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water-immersed tubular water flow switch, comprising a water flow switch body, a connecting pipe and a pipeline, wherein an installation ring is provided in the middle of the water flow switch body, and sealing gaskets are fixedly installed at both the front and rear ends of the water flow switch body;

[0006] The outer walls of both the front and rear ends of the water flow switch body are movably fitted with connecting pipes, and the outer walls of the connecting pipes are fixedly fitted with pipelines.

[0007] The mounting ring has grooves arranged in a circular array on both the front and rear sides. The inner wall of the groove is slidably connected to the outer wall of the slide piece. A clip is fixedly connected to the top surface of the slide piece, and a miniature spring is provided on the bottom surface of the slide piece inside the groove.

[0008] One end of the connecting tube is fixedly connected to a retaining ring, and the retaining ring has retaining holes arranged in a circumferential array inside. The other end of the connecting tube has a through hole.

[0009] The beneficial effects of this utility model are as follows: This device, by setting up a water flow switch body, a mounting ring, and a connecting pipe, fixes the connecting pipe to the two sides of the pipe installation position, and slides the water flow switch body, located on both sides of the mounting ring, into the connecting pipes on both sides. The connecting pipe body is then fixed to the pipe by engaging with the locking head through the locking hole inside the locking ring. The water flow switch body is placed inside the connecting pipes on both sides and inside the installed pipe, avoiding the switch body being exposed outside the pipe, thus further extending the service life of the switch. The movable engagement between the mounting ring and the locking ring makes it easy to disassemble and assemble the switch body from the pipe. The connection pipe fixes the switch body inside the pipe, thus avoiding the impact of repeated disassembly and assembly on the pipe. It is highly practical.

[0010] To ensure a tight fit between the water flow switch body and the connecting pipe:

[0011] A further configuration is made such that the outer wall of the water flow switch body is tightly fitted to the interior of the connecting pipe.

[0012] By adopting the above technical solution, the water flow switch body is placed inside the connecting pipe and placed inside the pipeline. The water flow switch body is tightly fitted to the connecting pipe, and the sealing gasket isolates and prevents water from entering the water flow switch body.

[0013] To facilitate the installation and removal of the water flow switch body from the pipeline:

[0014] The further configuration is as follows: the card head engages with the corresponding card hole.

[0015] By adopting the above-mentioned technical solution and using the snap-fit ​​installation method of the snap-fit ​​head and snap-fit ​​hole, it is convenient to install and remove the water flow switch body from the pipeline.

[0016] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the water flow switch body of this utility model;

[0019] Figure 3 This is a cross-sectional view of the mounting ring of this utility model;

[0020] Figure 4 This utility model Figure 3Enlarged schematic diagram of the structure at point A;

[0021] Figure 5 This is a cross-sectional structural diagram of the connecting pipe of this utility model.

[0022] In the diagram: 1. Water flow switch body; 2. Mounting ring; 21. Slide groove; 22. Sliding plate; 23. Clip; 24. Miniature spring; 3. Sealing gasket; 4. Connecting pipe; 41. Snap ring; 411. Snap hole; 42. Through hole; 5. Pipe. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0024] Please see Figures 1 to 5 A water-immersed tubular water flow switch includes a water flow switch body 1, a connecting pipe 4 and a pipe 5. The water flow switch body 1 is provided with an installation ring 2 in the middle, and sealing gaskets 3 are fixedly installed at both the front and rear ends of the water flow switch body 1.

[0025] The outer walls of both the front and rear ends of the water flow switch body 1 are movably fitted with connecting pipes 4, and the outer walls of the connecting pipes 4 are fixedly fitted with pipes 5.

[0026] The mounting ring 2 has grooves 21 arranged in a circular array on both the front and rear sides. The inner wall of the groove 21 is slidably connected to the outer wall of the slide piece 22. The top surface of the slide piece 22 is fixedly connected to a clip 23. The bottom surface of the slide piece 22 is located inside the groove 21 and has a miniature spring 24.

[0027] One end of the connecting tube 4 is fixedly connected to a retaining ring 41, and the inside of the retaining ring 41 has retaining holes 411 arranged in a circular array. The other end of the connecting tube 4 has a through hole 42.

[0028] In this embodiment, as Figure 1 and Figure 2 As shown, the outer wall of the water flow switch body 1 is tightly fitted with the interior of the connecting pipe 4.

[0029] In this embodiment, as Figure 4 and Figure 5 As shown, the card head 23 is engaged with the corresponding card hole 411.

[0030] The working process of this water-immersed tubular flow switch is as follows:

[0031] First, fix the connecting pipe 4 at the interface on both sides of the pipe 5. Slide the two sides of the water flow switch body 1 into the connecting pipe 4 on both sides to ensure a tight fit. During installation, align the clip 23 on the mounting ring 2 with the position of the slide groove 21, press the slide piece 22 to make the clip 23 slide into the slide groove 21 and compress the miniature spring 24.

[0032] After the retaining ring 41 is fitted onto one side of the mounting ring 2, the miniature spring 24 rebounds and releases the slide plate 22, pushing the retaining head 23 into the retaining hole 411 of the retaining ring 41, thus achieving a stable connection between the mounting ring 2 and the connecting pipe 4. The sealing gasket 3 ensures the sealing between the water flow switch body 1 and the connecting pipe 4, preventing water leakage.

[0033] During operation, the water in pipe 5 enters the water flow switch body 1 through the through hole 42 of the connecting pipe 4, and after passing through the inside of the water flow switch body 1, it flows out from the through hole 42 of the connecting pipe 4 on the other side. The snap-fit ​​connection structure enables quick installation and disassembly, and the sealing gasket 3 ensures the sealing performance of the system.

[0034] The main body of the flow switch 1 can be any existing mechanical, differential pressure, or gravity flow switch, and is not limited to any one of them.

[0035] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0036] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A water-immersed tubular water flow switch comprising a water flow switch body (1), a connecting pipe (4) and a pipe (5), characterized in that: The main body (1) of the water flow switch is provided with a mounting ring (2) in the middle, and sealing gaskets (3) are fixedly installed at both the front and rear ends of the main body (1). The outer walls of the front and rear ends of the water flow switch body (1) are movably sleeved with connecting pipes (4), and the outer walls of the connecting pipes (4) are fixedly sleeved with pipes (5). The mounting ring (2) has grooves (21) arranged in a circular array on both the front and rear sides. The inner wall of the groove (21) is slidably connected to the outer wall of the slide (22). The top surface of the slide (22) is fixedly connected to a clip (23). The bottom surface of the slide (22) is provided with a miniature spring (24) inside the groove (21). One end of the connecting tube (4) is fixedly connected to a retaining ring (41), and the retaining ring (41) has retaining holes (411) arranged in a circular array inside. The other end of the connecting tube (4) has a through hole (42).

2. The water-immersed tubular flow switch as described in claim 1, characterized in that: The outer wall of the water flow switch body (1) is tightly fitted to the inside of the connecting pipe (4).

3. The water-immersed tubular flow switch as described in claim 1, characterized in that: The card head (23) is engaged with the corresponding card hole (411).