Flow switch connector

Abstract

The utility model discloses a flow switch connector, and relates to the technical field of flow switches. A connecting rod is arranged at the bottom of the flow switch body, a limiting block is fixedly connected to the bottom of the connecting rod, a probe rod piece is slidably connected to the interior of the limiting block, the probe rod piece is sleeved with a telescopic spring, and a dustproof net is arranged on the side face of the bottom of the telescopic spring. During installation, an anti-collision block at the bottom of a probe rod piece arranged in the connecting rod slides in a sliding groove formed in the surface of a limiting block after making contact with the bottom of a pipeline, the anti-collision block shrinks towards the interior of the flow switch body, and due to the fact that the middle of the probe rod piece protrudes and is sleeved with a telescopic spring, the probe rod piece can contract towards the interior of the connecting rod; the damage to the heat sensor arranged at the bottom of the probe rod piece caused by extrusion of the bottom of the pipeline to the probe rod piece can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of flow switches, in particular to a flow switch connector. Background Art

[0002] The thermal flow switch is designed based on the principle of generating a difference in probe temperature. A heating sensor and two heat-sensitive sensors are built into the probe and are in contact with the medium. When the thermal flow switch is working, the heating sensor emits a constant amount of heat. When there is no medium flowing in the pipeline, the amount of heat received by the heat-sensitive sensor is a constant value. When there is medium flowing, the amount of heat received by the heat-sensitive sensor will change with the flow rate of the medium. The heat-sensitive sensor converts this temperature difference signal into an electrical signal. When the flow rate reaches a certain set point, the thermal flow switch outputs a switch signal.

[0003] After searching, a highly sensitive thermal flow switch is proposed in the patent document with announcement number CN 217035531 U, whose structure includes a thermal flow switch body, a pipe, a protective device, a sensing rod and a thermal sensor. The bottom end of the thermal flow switch body is fixedly equipped with a pipe, a protective device and a sensing rod, the pipe is arranged at the upper end of the outer side of the protective device, the sensing rod is arranged at the inner side of the protective device, and the outer side of the sensing rod is fixedly embedded with a thermal sensor. The utility model has the following beneficial effects: by arranging a protective device between the bottom end of the thermal flow switch body and the outer side of the sensing rod, the liquid flow contact amount is reduced through the hollow sleeve, and the support rod and the pad improve the supporting stability of the sensing rod, so as to achieve the beneficial effect of improving the anti-fluid impact ability by adding a force reduction component; by arranging an opening on the outer side of the hollow sleeve, and the opening is close to the thermal sensor, the contact amount between the thermal sensor and the fluid is guaranteed, and the sensing sensitivity is improved;

[0004] However, there are certain defects. Although the beneficial effect of improving the impact resistance is achieved by adding a force-reducing component, when the flow switch is installed in a pipe with a smaller diameter during use, it is easy to cause damage to the bottom probe, which will affect the normal operation of the thermal sensor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a flow switch connector, which solves the problem that although the beneficial effect of improving the impact resistance ability is improved by adding a force reduction component, when the flow switch is used and installed in a pipe with a smaller diameter, it is easy to cause damage to the bottom probe, which will affect the normal operation of the thermal sensor.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a flow switch connector. It includes a flow switch body, the bottom of the flow switch body is fixedly connected to a connecting rod, the bottom of the connecting rod is fixedly connected to a limit block, the surface of the limit block is provided with a slide groove, the inside of the limit block is slidably connected to a probe rod, the outside of the probe rod is sleeved with a telescopic spring, the bottom of the probe rod is fixedly connected to an anti-collision block, and the bottom side of the telescopic spring is provided with a dustproof net.

[0007] Preferably, a cover plate is provided on the top of the flow switch body, fixing bolts are movably connected around the cover plate, and a flow display light is provided on the surface of the cover plate.

[0008] Preferably, a connecting pipe is fixedly connected to the side of the flow switch body.

[0009] Preferably, the middle portion of the probe rod protrudes toward both ends and is clamped on the top of the limit block, and a sliding groove is provided on the surface of the limit block and surrounds the surface of the limit block upward.

[0010] Preferably, the top of the telescopic spring is fixedly connected to the bottom of the inner cavity of the flow switch body, and the bottom of the telescopic spring is fixedly connected to the surface of the raised part in the middle of the telescopic spring.

[0011] Preferably, a slider is protruded from the bottom of the probe rod, and the slider is slidably connected inside the slide groove.

[0012] Preferably, the dustproof net is arranged on the surface of the probe rod, and a thermal sensor is arranged inside the bottom end of the probe rod.

[0013] The utility model provides a flow switch connector. Compared with the prior art, it has the following beneficial effects:

[0014] 1. A flow switch connector connects the flow switch to a pipeline through a threaded structure arranged at the bottom of the flow switch body. When the diameter of the pipeline is small, the anti-collision block at the bottom of the probe rod arranged inside the connecting rod slides inside the slide groove opened on the surface of the limit block after contacting the bottom of the pipeline during installation, and shrinks toward the inside of the flow switch body. Since the middle part of the probe rod is convex and the outside is sleeved with a telescopic spring, it can shrink toward the inside of the connecting rod, which can prevent the bottom of the pipeline from squeezing the probe rod and causing damage to the thermal sensor arranged at the bottom of the probe rod.

[0015] 2. A flow switch connector, with a telescopic spring sleeved on the outside of a probe rod, and both ends of the telescopic spring fixed to the bottom of a flow switch body and a raised surface in the middle of the probe rod, can provide downward pressure to the probe rod when the anti-collision block presses against the inside of the pipeline, so that the anti-collision block provided at the bottom of the probe rod fits with the bottom of the pipeline, so that the thermal sensor is always located at the bottom of the inner cavity of the pipeline, so that the detection of the thermal sensor is more accurate and the detection of the flow switch body is more sensitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 A magnified image;

[0019] Figure 4 It is a schematic diagram of the top structure of the utility model.

[0020] In the figure: 1. flow switch body; 2. connecting rod; 3. probe rod; 300. slider; 4. telescopic spring; 5. limit block; 500. slide groove; 6. anti-collision block; 7. dustproof net; 700. thermal sensor; 8. connecting pipe; 9. cover plate; 10. fixing bolt; 11. flow display light. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4The utility model provides a technical solution: a flow switch connector. It includes a flow switch body 1, a connecting rod 2 is fixedly connected to the bottom of the flow switch body 1, a limiting block 5 is fixedly connected to the bottom of the connecting rod 2, a sliding groove 500 is provided on the surface of the limiting block 5, and the sliding groove 500 is used to fix the slider 300 protruding below the internal probe rod 3, so that the slider 300 can slide inside to achieve the purpose of telescoping the probe rod 3 inside the connecting rod 2, the probe rod 3 is slidably connected inside the limiting block 5, and the probe rod 3 is used to be installed inside the pipeline, and a thermal sensor 700 arranged at the bottom is used to detect the heat and water flow velocity in the pipeline, and the probe rod 3 is sleeved on the outside with a telescopic Spring 4, the telescopic spring 4 is used to provide telescopic force for the probe rod 3 to prevent the anti-collision block 6 at the bottom of the probe rod 3 from being unable to extend and retract freely when it contacts the inner wall of the pipe. The bottom of the probe rod 3 is fixedly connected with the anti-collision block 6. The anti-collision block 6 is used to protect the thermal sensor 700 arranged at the bottom of the probe rod 3, and will not be squeezed during the installation process due to the small diameter of the pipe, thereby causing damage to the thermal sensor 700. A dustproof net 7 is provided on the bottom side of the telescopic spring 4. The dustproof net 7 performs a dustproof effect when the flow switch is working to prevent dust from being deposited on the surface of the thermal sensor 700, or flowing into the inside of the switch to damage the components.

[0023] See also Figure 1-4 A cover plate 9 is provided on the top of the flow switch body 1, and fixing bolts 10 are movably connected around the cover plate 9. A flow display light 11 is provided on the surface of the cover plate 9. The flow display light 11 can be used to observe the flow rate of the water flow inside the pipeline. The more the flow display lights 11 light up, the greater the water flow. The cover plate 9 is fixed to the top of the flow switch body 1 by the fixing bolts 10. The side of the flow switch body 1 is fixedly connected with a connecting pipe 8. The middle part of the probe rod 3 protrudes toward both ends and is clamped on the top of the limit block 5. The slide groove 500 opened on the surface of the limit block 5 surrounds the surface of the limit block 5 and goes up. The slider When 300 slides inside, the probe rod 3 will be extended and retracted as the height of the slide groove 500 changes. The top of the telescopic spring 4 is fixedly connected to the bottom of the inner cavity of the flow switch body 1, and the bottom of the telescopic spring 4 is fixedly connected to the surface of the raised part in the middle of the telescopic spring 4. The bottom of the probe rod 3 is raised with a slider 300, and the slider 300 is slidably connected to the inside of the slide groove 500. The dustproof net 7 is arranged on the surface of the probe rod 3, and a thermal sensor 700 is arranged inside the bottom end of the probe rod 3. The thermal sensor 700 is a sensor that uses the thermoelectric effect to convert temperature into voltage changes.

[0024] When in use, the probe rod 3 is inserted into the pipe to be tested, and the switch is installed inside the pipe by screwing the bottom of the flow switch body 1. When the diameter of the pipe is small, the anti-collision block 6 at the bottom of the probe rod 3 arranged inside the connecting rod 2 during installation slides inside the slide groove 500 opened on the surface of the limit block 5 after contacting the bottom of the pipe, and shrinks toward the inside of the flow switch body 1. Since the middle part of the probe rod 3 is convex and the telescopic spring 4 is sleeved on the outside, it can shrink toward the inside of the connecting rod 2, which can prevent the bottom of the Guandong from squeezing the probe rod 3 and causing damage to the dustproof net 7 and the thermal sensor 700 arranged at the bottom of the probe rod 3; at the same time, the telescopic spring 4 can provide downward pressure to the probe rod 3 when the anti-collision block 6 is against the inside of the pipe, so that the anti-collision block 6 arranged at the bottom of the probe rod 3 fits with the bottom of the pipe, so that the dustproof net 7 is always located at the bottom of the inner cavity of the pipe, so that the detection of the dustproof net 7 is more accurate, and the detection of the flow switch body 1 is more sensitive.

[0025] In this embodiment, a flow switch connector, among the above components, its structural features and working principles all adopt the existing technology and will not be described in detail here.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] 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 flow switch connector, comprising a flow switch body (1), characterized in that: The bottom of the flow switch body (1) is fixedly connected to a connecting rod (2), the bottom of the connecting rod (2) is fixedly connected to a limit block (5), the surface of the limit block (5) is provided with a sliding groove (500), the inside of the limit block (5) is slidably connected to a probe rod (3), the outside of the probe rod (3) is sleeved with a telescopic spring (4), the bottom of the probe rod (3) is fixedly connected to an anti-collision block (6), and the bottom side of the telescopic spring (4) is provided with a dustproof net (7).

2. A flow switch connector according to claim 1, characterized in that: A cover plate (9) is arranged on the top of the flow switch body (1), fixing bolts (10) are movably connected around the cover plate (9), and a flow display light (11) is arranged on the surface of the cover plate (9).

3. A flow switch connector according to claim 2, characterized in that: A connecting pipe (8) is fixedly connected to the side of the flow switch body (1).

4. A flow switch connector according to claim 1, characterized in that: The middle part of the probe rod (3) protrudes toward both ends and is clamped on the top of the limit block (5), and the sliding groove (500) provided on the surface of the limit block (5) surrounds the surface of the limit block (5) and extends upward.

5. A flow switch connector according to claim 1, characterized in that: The top of the telescopic spring (4) is fixedly connected to the bottom of the inner cavity of the flow switch body (1), and the bottom of the telescopic spring (4) is fixedly connected to the surface of the raised part in the middle of the telescopic spring (4).

6. A flow switch connector according to claim 4, characterized in that: A slider (300) is protruded from the bottom of the probe rod (3), and the slider (300) is slidably connected inside the slide groove (500).

7. A flow switch connector according to claim 1, characterized in that: The dustproof net (7) is arranged on the surface of the probe rod (3), and a thermal sensor (700) is arranged inside the bottom end of the probe rod (3).

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