A target flow sensor with antifreeze design

Abstract

The utility model relates to the technical field of sensors, in particular to a target flow sensor with an antifreeze design, comprising a sealed tube body, an induction unit, a magnetic field unit, a water flow induction body, a connecting nut and a fixed bracket, wherein the outer wall of the sealed tube body is sleeved with a connecting nut, a fixed bracket is arranged at the bottom opening of the sealed tube body, a water flow induction body is slidably arranged in the inner cavity of the sealed tube body, the water flow induction body passes through the fixed bracket, the top of the sealed tube body is plugged with a magnetic field unit, and the magnetic field unit is plugged with an induction unit. The target flow sensor with an antifreeze design changes the general integrated plastic structure design of the sealed tube body, and is designed to be composed of a shell with a plastic structure on the outside and a heat-conducting structure inlaid with metal on the inside, thereby solving the freezing problem of the target flow switch sensor when used in low temperature and ultra-low temperature environments, achieving the improvement of product performance reliability and expanding the application range of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a target flow sensor with an antifreeze design. Background Art

[0002] At present, most of the target current switch sensors using reed switch sensitive elements on the market use traditional materials and structural designs, and do not have the antifreeze function for long-term use under ambient temperatures below -10°C, and the product use environment is limited. The existing technology has the following application defects: 1. The product does not have the function of being used in low-temperature environments and cannot be used in low-temperature environments that produce freezing; 2. The structure does not have the ability to quickly conduct heat, which will cause the moving structure to freeze and lose its function under low-temperature conditions. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a target flow sensor with an antifreeze design.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A target flow sensor with antifreeze design is designed, including a sealed tube body, a sensing unit, a magnetic field unit, a water flow sensing body, a connecting nut and a fixed bracket. The outer wall of the sealed tube body is sleeved with a connecting nut, the bottom opening of the sealed tube body is provided with a fixed bracket, the inner cavity of the sealed tube body is slidably provided with a water flow sensing body, the water flow sensing body passes through the fixed bracket, the top of the sealed tube body is plugged with the magnetic field unit, and the induction unit is plugged into the magnetic field unit.

[0006] Preferably, the sealed tube body comprises a shell, and the inner cavity wall of the shell is provided with a metal heat-conducting structure. The top of the sealed tube body is threadedly connected with a screw, and the screw abuts against the sensing unit.

[0007] Preferably, a positioning buckle is provided at the bottom of the shell, and an injection molding positioning piece and a rotation-stopping clamp are provided at the bottom of the heat-conducting structure, and the positioning buckle is respectively clamped with the injection molding positioning piece and the rotation-stopping clamp.

[0008] Preferably, the sensing unit comprises a sensing element, an assembly shell, and a signal line. The sensing element is located in an inner cavity of the assembly shell, and the signal line is electrically connected to the sensing element.

[0009] Preferably, the magnetic field unit comprises a supporting shell and a first magnet, and the first magnet is distributed on both sides of the supporting shell.

[0010] Preferably, the water flow sensor comprises a second magnet and a target rod, and the second magnet is arranged on the top of the target rod.

[0011] The utility model proposes a target flow sensor with an anti-freezing design, which has the beneficial effects of making full use of the thermal conductivity characteristics of the material, changing the general integrated plastic structure design of the sealed tube body, and designing it to be composed of a shell with a plastic structure on the outside and a heat-conducting structure inlaid with metal on the inside. This structural design can not only ensure the thermal insulation effect of traditional products, but also fully conduct the temperature of the water in the pipeline to prevent the water in the sealed tube body from freezing, solving the freezing problem caused by the target flow switch sensor when used in low temperature and ultra-low temperature environments, achieving the improvement of product performance reliability and expanding the application range of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an isometric view of a target flow sensor with an antifreeze design proposed by the utility model;

[0013] Figure 2 A cross-sectional view of a target flow sensor with an antifreeze design proposed by the utility model;

[0014] Figure 3 This is a cross-sectional view of the sealed tube body of a target flow sensor with an antifreeze design proposed by the utility model;

[0015] Figure 4 An exploded view of the sealed tube body of a target flow sensor with an antifreeze design proposed by the utility model;

[0016] Figure 5 This is a partial cross-sectional view of the sealed tube body of a target flow sensor with an antifreeze design proposed by the utility model;

[0017] Figure 6 A schematic diagram of the heat conduction structure of a target flow sensor with an antifreeze design proposed by the utility model;

[0018] Figure 7 This is an exploded view of a target flow sensor with an antifreeze design proposed in the utility model.

[0019] In the figure: 1 sealing tube body, 1-1 screw, 1-2 shell, 1-2-1 positioning buckle, 1-3 thermal conductive structure, 1-3-1 injection molding positioning part, 1-3-2 anti-rotation clamping part, 1-3-3 support part, 2 sensing unit, 2-1 sensing element, 2-2 assembly shell, 2-3 signal line, 3 magnetic field unit, 3-1 support shell, 3-2 first magnet, 4 water flow sensing body, 4-1 second magnet, 4-2 target rod, 5 connecting nut, 6 fixing bracket. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-7 A target flow sensor with an antifreeze design includes a sealed tube body 1, a sensing unit 2, a magnetic field unit 3, a water flow sensing body 4, a connecting nut 5 and a fixed bracket 6. The outer wall of the sealed tube body 1 is sleeved with a connecting nut 5, and a fixed bracket 6 is provided at the bottom opening of the sealed tube body 1. The water flow sensing body 4 is slidably provided in the inner cavity of the sealed tube body 1, and the water flow sensing body 4 passes through the fixed bracket 6. The magnetic field unit 3 is plugged into the top of the sealed tube body 1, and the sensing unit 2 is plugged into the magnetic field unit 3.

[0022] The sealed tube body 1 includes a shell 1-2, the inner wall of the shell 1-2 is provided with a metal heat-conducting structure 1-3, the top of the sealed tube body 1 is threadedly connected with a screw 1-1, the screw 1-1 is abutted against the sensing unit 2, and the plastic structural shell 1-2 and the internally embedded metal heat-conducting structure 1-3 are composed. This structural design can not only ensure the thermal insulation effect of traditional products, but also can fully conduct the temperature of the water in the pipeline to prevent the water in the sealed tube body 1 from freezing.

[0023] A positioning buckle 1-2-1 is provided at the bottom of the shell 1-2, and an injection molding positioning piece 1-3-1 and a rotation-stopping clamping piece 1-3-2 are provided at the bottom of the heat-conducting structure 1-3. The positioning buckle 1-2-1 is respectively connected with the injection molding positioning piece 1-3-1 and the rotation-stopping clamping piece 1-3-2.

[0024] The sensing unit 2 includes a sensing element 2-1, an assembly shell 2-2, and a signal line 2-3. The sensing element 2-1 is located in an inner cavity of the assembly shell 2-2, and the signal line 2-3 is electrically connected to the sensing element 2-1.

[0025] The magnetic field unit 3 includes a support shell 3-1 and a first magnet 3-2, the first magnet 3-2 is distributed on both sides of the support shell 3-1, and the water flow sensor 4 includes a second magnet 4-1 and a target rod 4-2, the second magnet 4-1 is arranged on the top of the target rod 4-2.

[0026] Working mode: When the product is fixed on the water pipe by the connecting nut 5 and water flows in the pipe, the target rod 4-2 of the water flow sensor 4 is affected by the water pressure. When the water pressure reaches a certain value, the water flow sensor 4 will rotate, causing the position of the magnet 4-1 to change, thereby changing the magnetic field strength of the sensing element 2-1, causing the sensing element 2-1 to be turned on and off.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A target flow sensor with an antifreeze design, comprising a sealed tube body (1), a sensing unit (2), a magnetic field unit (3), a water flow sensing body (4), a connecting nut (5) and a fixing bracket (6), characterized in that: The outer wall of the sealed tube body (1) is sleeved with a connecting nut (5); a fixing bracket (6) is provided at the bottom opening of the sealed tube body (1); a water flow sensor (4) is slidably provided in the inner cavity of the sealed tube body (1); the water flow sensor (4) passes through the fixing bracket (6); a magnetic field unit (3) is plugged into the top of the sealed tube body (1); and an induction unit (2) is plugged into the magnetic field unit (3).

2. The target flow sensor with an antifreeze design according to claim 1, characterized in that: The sealed tube body (1) comprises a shell (1-2), wherein the inner cavity wall of the shell (1-2) is provided with a metal heat-conducting structure (1-3), and the top of the sealed tube body (1) is threadedly connected with a screw (1-1), and the screw (1-1) is in contact with the induction unit (2).

3. The target flow sensor with antifreeze design according to claim 2, characterized in that: The bottom of the shell (1-2) is provided with a positioning buckle (1-2-1), the bottom of the heat-conducting structure (1-3) is provided with an injection molding positioning piece (1-3-1) and a rotation-stopping clamping piece (1-3-2), and the positioning buckle (1-2-1) is respectively clamped with the injection molding positioning piece (1-3-1) and the rotation-stopping clamping piece (1-3-2).

4. The target flow sensor with an antifreeze design according to claim 1, characterized in that: The sensing unit (2) comprises a sensing element (2-1), an assembly shell (2-2), and a signal line (2-3); the sensing element (2-1) is located in an inner cavity of the assembly shell (2-2), and the signal line (2-3) is electrically connected to the sensing element (2-1).

5. The target flow sensor with antifreeze design according to claim 1, characterized in that: The magnetic field unit (3) comprises a supporting shell (3-1) and a first magnet (3-2), wherein the first magnet (3-2) is distributed on both sides of the supporting shell (3-1).

6. The target flow sensor with an antifreeze design according to claim 1, characterized in that: The water flow sensor (4) comprises a second magnet (4-1) and a target rod (4-2), wherein the second magnet (4-1) is arranged on the top of the target rod (4-2).

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