Target current switch

Abstract

The utility model provides a target flow switch, which relates to the technical field of pipeline water flow detection and comprises a switch body, an electrical assembly, a blade and a waterproof piece. The electrical assembly is installed at the upper end of the switch body. The lower end of the switch body is open; a cavity is formed in the switch body, the upper end of the cavity is in threaded connection with a magnet seat, and the blade is in threaded connection with the magnet seat; the blade is sleeved with the waterproof piece, and the waterproof piece abuts against a groove in the inner wall of the switch body through a flush joint part. The waterproof piece arches in the axial direction of the blade and abuts against the limiting part of the blade to form a protruding part. A blocking cavity is formed in the protruding part. The problem that impurities enter a switch body due to the fact that a rubber cap of a target current switch is damaged or gaps exist between the rubber cap and the switch body in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline water flow detection, in particular to a target flow switch. Background Art

[0002] The target flow switch is mainly used for detecting water flow in pipelines. The flow blades at the front end are used to detect the flow rate and pressure of the water flow. Usually, the target flow switch is used as a control switch for water source multi-split units. When the water flow rate is large enough, the signal is turned on and the compressor of the unit can be turned on; when the water flow rate decreases below the allowable value, the signal is turned off and the compressor of the unit is turned off to protect the safety of the unit. Therefore, after the rubber cap at the front end of the target flow switch is impacted, the fixing ring of the rubber cap will shake, which will cause a gap or gap between the rubber cap and the target flow switch body, causing water with metal powder to enter the main body of the target flow switch. Since the water is mixed with metal powder particles, a large amount of metal powder will be adsorbed and accumulated on the magnet of the target flow switch during long-term use, thereby reducing the induction sensitivity of the magnet, affecting the normal operation of the target flow switch, causing the accuracy of the water flow switch to decrease and the reliability of the switch action, reducing the performance of the switch, and even causing the switch to fail and be damaged, resulting in inconvenience in the use of the switch, and cumbersome removal and maintenance. Summary of the invention

[0003] The utility model aims to provide a target current switch, which solves the problem in the prior art that the rubber cap of the target current switch is damaged or a gap is formed between the rubber cap and the switch body, resulting in impurities entering the interior of the switch body.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a target current switch, which is improved in that it includes: a switch body, an electrical component, a blade and a waterproof component; the electrical component is installed at the upper end of the switch body; the lower end of the switch body is open; a cavity is opened in the switch body, the upper end of the cavity is threadedly connected to a magnet seat, and the blade is threadedly connected to the magnet seat; the waterproof component is sleeved on the blade, the waterproof component abuts against the groove on the inner wall of the switch body through a flat connection, and is squeezed by a fixing ring; the waterproof component is arched along the axial direction of the blade and abuts against the limiting part of the blade to form a protrusion; a blocking cavity is formed in the protrusion.

[0005] In the above technical solution, a threaded hole is provided at the upper end of the switch body, a screw is screwed into the threaded hole, and the screw fixes the electrical component to the switch body.

[0006] In the above technical solution, a pendulum seat is provided in the switch body, the pendulum seat is a circular ring, the blade is inserted into the pendulum seat, and the pendulum seat is fixedly connected to the blade via a pendulum seat needle.

[0007] In the above technical solution, a clamping joint is formed on the outer wall of the fixing ring, and the fixing ring is plugged into the clamping groove corresponding to the side wall of the groove through the clamping joint.

[0008] The waterproof component in the above technical solution is made of rubber.

[0009] In the above technical solution, a first magnet is installed in the magnet seat, and a second magnet and a third magnet are installed on opposite sides of the outer wall of the switch body. The first magnet controls the on and off of the electrical component by forming a magnetic field with the second magnet and the third magnet.

[0010] In the above technical solution, a sleeve connection portion is formed on the waterproof component, and the sleeve connection portion is sleeved on the outer wall of the blade.

[0011] In the above technical solution, a nut sleeve is inserted on the outer wall of the switch body, a through hole is formed on the nut sleeve, the switch body is inserted in the through hole, and a protective sleeve is threadedly sleeved on the lower end of the nut sleeve.

[0012] The beneficial effect of the present application is that the waterproof part is fastened inside the switch body by combining the fixing ring with the groove to ensure a completely sealed state, thereby preventing water from entering the cavity of the switch body, thereby reducing the sensitivity of the magnet to the influence of impurities in the water and reducing the frequency of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a cross-sectional view of the target flow switch of the utility model;

[0014] Figure 2 This is a partial enlarged view of the groove of the target flow switch of the utility model;

[0015] Figure 3 This is the main body diagram of the target current switch of the utility model.

[0016] In the figure: 1-switch body; 11-threaded hole; 12-screw; 13-groove; 131-clamping groove; 14-nut sleeve; 15-protective cover; 2-electrical component; 3-blade; 31-limiting part; 4-waterproof part; 41-flat part; 42-raised part; 43-sleeve part; 5-magnet seat; 51-first magnet; 52-second magnet; 53-third magnet; 6-fixing ring; 61-clamping joint; 7-swing seat; 71-swing seat needle. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0018] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0020] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0021] When the target flow switch under the existing technology is used in an environment with a large water flow, the waterproof part fixed by the fixing ring may become loose under the impact of the water flow, which will cause the water to flow through the gap between the waterproof part and the switch body and enter the cavity of the switch body, causing impurities in the water to gather on the magnet inside the cavity, resulting in a decrease in the magnetic field sensitivity and a decrease in the accuracy of the target flow switch on and off.

[0022] In order to improve the problems existing in the prior art, the utility model provides a target current switch, such as Figures 1 to 3 As shown, it includes a switch body 1, an electrical component 2, a blade 3 and a waterproof component 4.

[0023] The electrical component 2 is mounted on the upper end of the switch body 1. In a possible implementation, a threaded hole 11 is provided on the upper end of the switch body 1. A screw 12 is screwed into the threaded hole 11. The screw 12 fixes the electrical component 2 to the switch body 1. It should be noted that the electrical component 2 can also be plugged into the leaf switch body 1, and is not limited to the threaded connection method.

[0024] The switch body 1 has an opening at the lower end. A cavity is formed in the switch body 1 , and a magnet seat 5 is threadedly connected to the upper end of the cavity. The blade 3 is threadedly connected to the magnet seat 5 .

[0025] In one possible implementation, a first magnet 51 is installed in the magnet seat 5, and a second magnet 52 and a third magnet 53 are installed on opposite sides of the outer wall of the switch body 1. The first magnet 51 controls the on and off of the electrical component 2 by forming a magnetic field with the second magnet 52 and the third magnet 53.

[0026] The waterproof member 4 is sleeved on the blade 3 , and the waterproof member 4 abuts against the groove 13 on the inner wall of the switch body 1 through the flat portion 41 , and is squeezed by a fixing ring 6 .

[0027] In a possible implementation, a clamping joint 61 is formed on the outer wall of the fixing ring 6 , and the fixing ring 6 is plugged into the clamping groove 131 corresponding to the side wall of the groove 13 through the clamping joint 61 .

[0028] Among them, after the fixing ring 6 is fixed in the groove 13 in a snap-fitting form, the flat connection portion 41 of the waterproof component 4 will be crimped more tightly, which will enable the waterproof component 4 to be impacted by a large flow of water, and the flat connection portion 41 can still abut against the groove 13 to prevent water from passing through, thereby providing better sealing for the cavity inside the switch body 1 and preventing impurities inside the water flow from entering the cavity, so that the magnetic field formed by the first magnet 51, the second magnet 52 and the third magnet 53 is more sensitive, thereby extending the time that the electrical component 1 can be sensitively controlled and reducing the number of times the internal cavity is cleaned.

[0029] It is worth mentioning that in the present application, fastening the waterproof component 4 by means of a fixing ring 6 is only a preferred embodiment. In other possible implementations, the flat-jointed portion 41 of the waterproof component 4 may be configured as a fixed component, thereby directly providing a corresponding snap-in connector on the flat-jointed portion 41 to be plugged into the groove, thereby fastening the waterproof component 4. This is not a limitation herein.

[0030] In a possible implementation, a swing seat 7 is provided in the switch body 1, and the swing seat 7 is a circular ring. The blade 3 is inserted into the swing seat 7, and the swing seat 7 is fixedly connected to the blade via a swing seat needle 71, so that the blade 3 can swing flexibly with the water flow.

[0031] The waterproof member 4 is arched along the axial direction of the blade 3 and abuts against the limiting portion 31 of the blade 3 to form a raised portion 42 ; a blocking cavity is formed in the raised portion 42 .

[0032] In a possible implementation, the waterproof member 4 is made of rubber, so the volume of the barrier cavity can be compressed. The arched protrusion 42 can cope with the impact of large water flow, and the barrier cavity located inside the cavity can bear the impact of the water flow and change the compressed volume, thereby having a buffering effect, avoiding the waterproof member 4 from being damaged under the impact of the water flow, and extending its service life. At the same time, rubber has good corrosion resistance and a certain degree of flexibility. The rubber of the utility model is thicker, providing a certain degree of buffering for water flow impact.

[0033] The waterproof member 4 is formed with a sleeve portion 43 , which is sleeved on the outer wall of the blade 3 to prevent water from intruding into the switch body 1 along the gap, thereby improving the sealing effect.

[0034] In a possible implementation, a nut sleeve 14 is inserted on the outer wall of the switch body 1, a through hole is formed on the nut sleeve 14, the switch body 1 is inserted in the through hole, and a protective sleeve 15 is threadedly sleeved on the lower end of the nut sleeve 14. In this way, the blade 3 is protected to a certain extent.

[0035] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A target current switch, characterized in that: It includes a switch body, an electrical component, a blade and a waterproof component; the electrical component is installed at the upper end of the switch body; the lower end of the switch body is open; a cavity is opened in the switch body, the upper end of the cavity is threadedly connected to a magnet seat, and the blade is threadedly connected to the magnet seat; the waterproof component is sleeved on the blade, and the waterproof component abuts against the groove on the inner wall of the switch body through a flat connection; the waterproof component is arched along the axial direction of the blade and abuts against the limiting part of the blade to form a protrusion; a blocking cavity is formed in the protrusion.

2. The target current switch according to claim 1, characterized in that: A threaded hole is provided at the upper end of the switch body, a screw is screwed into the threaded hole, and the screw fixes the electrical component to the switch body.

3. The target current switch according to claim 1, characterized in that: A pendulum seat is arranged in the switch body, the pendulum seat is a circular ring, the blade is inserted into the pendulum seat, and the pendulum seat is fixedly connected with the blade via a pendulum seat needle.

4. The target current switch according to claim 1, characterized in that: A fixing ring is also installed in the groove, and a clamping joint is formed on the outer wall of the fixing ring. The fixing ring is plugged into a clamping groove corresponding to the side wall of the groove through the clamping joint.

5. The target current switch according to claim 1, characterized in that: The waterproof component is made of rubber.

6. The target current switch according to claim 1, characterized in that: A first magnet is installed in the magnet seat, and a second magnet and a third magnet are installed on opposite sides of the outer wall of the switch body. The first magnet controls the on and off of the electrical component by forming a magnetic field with the second magnet and the third magnet.

7. The target current switch according to claim 1, characterized in that: A sleeve connection portion is formed on the waterproof component, and the sleeve connection portion is sleeved on the outer wall of the blade.

8. The target current switch according to claim 1, characterized in that: On the outer wall of the switch body A nut sleeve is inserted, the nut sleeve is formed with a through hole, and the switch body is inserted in the through hole. The lower end of the nut sleeve is threadedly sleeved with a protective sleeve.

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