Antifouling target type flow switch

Abstract

The utility model discloses an antifouling target type flow switch which comprises a sealing sleeve, a shaft pin is arranged at the lower end of the interior of the sealing sleeve, a swing rod is arranged on the surface of the outer side of the shaft pin, a flow direction rod is fixedly arranged at the lower end of the swing rod, and a flow direction target piece is fixedly arranged at the lower end of the flow direction rod. A scanning magnet is fixedly arranged at the upper end of the swing rod, a magnetic sensitive tube is fixedly arranged at the upper end of the sealing sleeve, a sealing mechanism is arranged between the outer side surface of the lower end of the swing rod and the sealing sleeve, the sealing mechanism comprises an anti-fouling silicon rubber sleeve and a silicon rubber sleeve fixing elastic piece, and the outer side surface of the swing rod is sleeved with the anti-fouling silicon rubber sleeve. The flow disturbing mechanism is arranged and is matched with the antifouling silica gel sleeve to prevent the situation that magnetic particles suspended in a medium enter the sealing sleeve, are adsorbed by the scanning magnet and the repulsive force magnet and are gathered and filled in the space between the sealing sleeve and the sealing sleeve in the use process, so that the stable performance of the flow switch in long-time use is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of target type flow switches, in particular to an anti-fouling target type flow switch. Background Art

[0002] FSF-YK-A anti-fouling target flow switch (hereinafter referred to as: anti-fouling flow switch) is a type of target flow switch.

[0003] In the prior art, the anti-fouling flow switch has an anti-fouling measure of adding a polyurethane filter sponge to the upper end of the shaft pin ring in the closed sleeve to filter the dirt entering the closed sleeve medium, thereby protecting the magnetic particle dirt.

[0004] However, the prior art has the following defects: the cavity of the mesh structure of the polyurethane filter sponge is easily filled with foreign matter, which then enters the closed sleeve and is adsorbed and gathered by the scanning magnet and the repulsive magnet; at the same time, due to its characteristics, the polyurethane filter sponge has strict requirements on the use environment and the dirt in the medium, otherwise it is very easy to be blocked by a large amount of dirt or large particles at the beginning of use, thus losing its protective function.

[0005] Therefore, an anti-fouling target flow switch is needed to improve this problem. Utility Model Content

[0006] The purpose of the utility model is to provide an anti-fouling target flow switch to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-fouling target flow switch, comprising a closing sleeve, an axle pin is arranged at the lower end of the interior of the closing sleeve, a swing rod is arranged on the outer surface of the axle pin, a flow direction rod is fixedly arranged at the lower end of the swing rod, a flow direction target plate is fixedly arranged at the lower end of the flow direction rod, a scanning magnet is fixedly arranged at the upper end of the swing rod, a magnetic sensitive tube is fixedly arranged at the upper end of the closing sleeve, a sealing mechanism is arranged between the outer surface of the lower end of the swing rod and the closing sleeve, the sealing mechanism comprises an anti-fouling silicone sleeve and a silicone sleeve fixing shrapnel, an anti-fouling silicone sleeve is arranged on the outer surface of the swing rod, silicone sleeve fixing shrapnel is fixedly arranged around the anti-fouling silicone sleeve, the silicone sleeve fixing shrapnel is fixedly connected to the closing sleeve, and a spoiler mechanism is arranged at the lower end of the anti-fouling silicone sleeve on the outer surface of the swing rod.

[0008] Preferably, the spoiler mechanism includes a first wing and a second wing, the outer surface of the swing rod is sleeved with the first wing at the lower end of the anti-fouling silicone sleeve, the lower end of the first wing is fixedly provided with the second wing, and the outer surface of the upper end of the first wing is raised. The first wing in the spoiler mechanism has a cross-sectional length that is naturally larger than the lower end of the first wing due to the raised upper end of the first wing. In this way, when the medium flows through, similar to the wings of an airplane, the medium flow rate at the upper end of the first wing will be fast, and the medium flow rate at the lower end of the first wing will be slow. At this time, according to the laws of physics, the pressure is small where the medium flow rate is fast, so a pressure difference can be generated, which will cause a vortex to form at the edge of the first wing, disturbing the fluid outside the anti-fouling silicone sleeve, making the suspended particles unable to be still, thereby preventing particulate impurities in the medium from forming an aggregation and adhesion on the outside of the anti-fouling silicone sleeve; thereby further improving the service life of the device.

[0009] Preferably, the surface of the sealing sleeve is provided with a repulsive magnetic force on one side of the scanning magnet, and the repulsive magnetic force is the same as the magnetic pole close to the scanning magnet, so that under the principle of like charges repel each other, the scanning magnet and the swing rod can be pushed to automatically reset. Figure 6 As shown, when the medium flows in the direction shown in the figure, it will push the target plate, so that the target plate and the swing rod rotate around the axis pin, so that the scanning magnet can move in the direction close to the repulsive magnetic force. After the medium stops flowing, the repulsive magnetic force can push the scanning magnet to automatically reset. The greater the medium flow rate, the greater the degree of inclination of the scanning magnet and the swing rod. In this way, the medium flow rate can be determined by using the magnetic sensitive tube according to the change of the magnetic force of the scanning magnet.

[0010] Preferably, a shaft ring is fixedly provided on the outside of the shaft pin inside the sealing sleeve, and the shaft ring can be used to install the shaft pin to protect the shaft pin.

[0011] Preferably, a wire is provided on one side of the surface of the magnetic sensitive tube, and the wire can facilitate the connection of the device to other external devices.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a flow disturbance mechanism, which cooperates with an anti-fouling silicone sleeve to prevent the magnetic particles suspended in the medium from entering the closed sleeve during use and being adsorbed by the scanning magnet and the repulsive magnet and gathering to fill the space between the closed sleeve and the closed sleeve, so as to ensure the stable performance of the flow switch during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an anti-fouling target flow switch of the utility model;

[0015] Figure 2 This is a side view of an anti-fouling target flow switch of the utility model;

[0016] Figure 3 This is the overall structural view of the anti-fouling silicone sleeve in the anti-fouling target type flow switch of the utility model;

[0017] Figure 4 This is an overall structural view of a flow disturbance mechanism in an anti-fouling target-type flow switch of the utility model;

[0018] Figure 5 This is an installation view of a bypass mechanism and a swing rod in an anti-fouling target flow switch of the utility model;

[0019] Figure 6 The utility model is a schematic diagram of the swing of a swing rod in an anti-fouling target flow switch.

[0020] In the figure: 1. Closing sleeve; 2. Axis pin; 3. Swing rod; 4. Flow direction rod; 5. Flow direction target; 6. Scanning magnet; 7. Magnetic sensitive tube; 8. Anti-fouling silicone sleeve; 9. Silicone sleeve fixing spring; 10. Wire; 11. First wing; 12. Second wing; 13. Repulsive magnetic force; 14. Shaft ring. 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 1-6 The utility model provides a technical solution: an anti-fouling target flow switch, comprising a closed sleeve 1, an axle pin 2 is arranged at the lower end of the closed sleeve 1, a swing rod 3 is arranged on the outer surface of the axle pin 2, a flow direction rod 4 is fixedly arranged at the lower end of the swing rod 3, a flow direction target sheet 5 is fixedly arranged at the lower end of the flow direction rod 4, a scanning magnet 6 is fixedly arranged at the upper end of the swing rod 3, a magnetic sensitive tube 7 is fixedly arranged at the upper end of the closed sleeve 1, a sealing mechanism is arranged between the outer surface of the lower end of the swing rod 3 and the closed sleeve 1, the sealing mechanism comprises an anti-fouling silicone sleeve 8 and a silicone sleeve fixing spring sheet 9, an anti-fouling silicone sleeve 8 is sleeved on the outer surface of the swing rod 3, a silicone sleeve fixing spring sheet 9 is fixedly arranged around the anti-fouling silicone sleeve 8, the silicone sleeve fixing spring sheet 9 is fixedly connected to the closed sleeve 1, and a spoiler mechanism is arranged at the lower end of the anti-fouling silicone sleeve 8 on the outer surface of the swing rod 3.

[0023] The spoiler mechanism includes a first wing 11 and a second wing 12. The outer surface of the swing rod 3 is sleeved with the first wing 11 at the lower end of the anti-fouling silicone sleeve 8. The lower end of the first wing 11 is fixedly provided with the second wing 12. The outer surface of the upper end of the first wing 11 is convex. Through the first wing 11 in the spoiler mechanism, due to the convexity of the upper end of the first wing 11, the cross-sectional length will naturally be greater than the lower end of the first wing 11. In this way, when the medium flows through, similar to the wings of an airplane, the medium flow rate at the upper end of the first wing 11 will be fast, and the medium flow rate at the lower end of the first wing 11 will be slow. At this time, according to the laws of physics, the pressure is small where the medium flow rate is fast, so a pressure difference can be generated, which will cause a vortex to form at the edge of the first wing 11, disturbing the fluid outside the anti-fouling silicone sleeve 8, so that the suspended particles cannot be still, so that the particle impurities in the medium can be prevented from forming aggregation and adhesion on the outside of the anti-fouling silicone sleeve 8; thereby, the service life of the device can be further improved;

[0024] The surface of the sealing sleeve 1 is provided with a repulsive magnetic force 13 on one side of the scanning magnet 6. The repulsive magnetic force 13 is the same as the magnetic pole close to the scanning magnet 6. In this way, under the principle of like poles repelling each other, the scanning magnet 6 and the swing rod 3 can be pushed to automatically reset. Figure 6 As shown, when the medium flows in the direction shown in the figure, it will push the target sheet 5, so that the target sheet 5 and the swing rod 3 rotate around the shaft pin 2, so that the scanning magnet 6 can move in the direction close to the repulsive magnetic force 13, and after the medium stops flowing, the repulsive magnetic force 13 can push the scanning magnet 6 to automatically reset, and the greater the medium flow rate, the greater the tilt degree of the scanning magnet 6 and the swing rod 3 can be pushed, so that the magnetic sensitive tube 7 can be used to judge the medium flow rate according to the change of the magnetic force of the scanning magnet 6;

[0025] A shaft ring 14 is fixedly arranged on the outside of the shaft pin 2 inside the sealing sleeve 1, and the shaft ring 14 can be used to install the shaft pin 2 and protect the shaft pin 2;

[0026] A conductor 10 is provided on one side of the surface of the magnetic sensitive tube 7, and the conductor 10 can facilitate the connection of the device to other external devices.

[0027] Working principle: When using this device Figure 6 As shown, when the medium flows in the direction shown in the figure, it will push the target sheet 5, so that the target sheet 5 and the swing rod 3 rotate around the shaft pin 2, so that the scanning magnet 6 can move in the direction close to the repulsive magnetic force 13, and after the medium stops flowing, the repulsive magnetic force 13 can push the scanning magnet 6 to automatically reset, and the greater the medium flow rate, the greater the tilt degree of the scanning magnet 6 and the swing rod 3 can be pushed, so that the magnetic sensitive tube 7 can be used to judge the medium flow rate according to the change of the magnetic force of the scanning magnet 6;

[0028] When the medium flows, the magnetic particles inside the medium (formed by peeling from pipes, accessories, etc. during use) will be blocked by the anti-fouling silicone sleeve 8, thereby effectively preventing impurities from entering the closed sleeve 1. At this time, the device is also provided with a spoiler mechanism, through the first wing 11 in the spoiler mechanism. Since the upper end of the first wing 11 is protruding, the cross-sectional length will naturally be greater than the lower end of the first wing 11. In this way, when the medium flows through, similar to the wings of an airplane, the medium flow rate at the upper end of the first wing 11 will be fast, and the medium flow rate at the lower end of the first wing 11 will be slow. At this time, according to the laws of physics, the pressure is small where the medium flow rate is fast, so a pressure difference can be generated, which will cause a vortex to form at the edge of the first wing 11, disturbing the fluid outside the anti-fouling silicone sleeve 8, so that the suspended particles cannot be still, thereby preventing the particle impurities in the medium from forming agglomeration and adhesion on the outside of the anti-fouling silicone sleeve 8; thereby further improving the service life of the device;

[0029] At the same time, when the device is used, the second wing 12 can prevent large particles of dirt from gathering and adhering to the bypass mechanism itself; and the bypass mechanism can directly prevent larger foreign objects from puncturing and damaging the anti-fouling silicone sleeve 8.

[0030] 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.

[0031] 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. An anti-fouling target flow switch, comprising a sealing sleeve (1), characterized in that: The lower end of the sealing sleeve (1) is provided with an axle pin (2), the outer surface of the axle pin (2) is provided with a swing rod (3), the lower end of the swing rod (3) is fixedly provided with a flow direction rod (4), the lower end of the flow direction rod (4) is fixedly provided with a flow direction target sheet (5), the upper end of the swing rod (3) is fixedly provided with a scanning magnet (6), the upper end of the sealing sleeve (1) is fixedly provided with a magnetosensitive tube (7), a sealing mechanism is provided between the outer surface of the lower end of the swing rod (3) and the sealing sleeve (1), the sealing mechanism comprises an anti-fouling silicone sleeve (8) and a silicone sleeve fixing spring sheet (9), the outer surface of the swing rod (3) is provided with an anti-fouling silicone sleeve (8), the silicone sleeve fixing spring sheet (9) is fixedly provided around the anti-fouling silicone sleeve (8), the silicone sleeve fixing spring sheet (9) and the sealing sleeve (1) are fixedly connected, and the outer surface of the swing rod (3) is provided with a spoiler mechanism at the lower end of the anti-fouling silicone sleeve (8).

2. The anti-fouling target flow switch according to claim 1, characterized in that: The spoiler mechanism comprises a first wing (11) and a second wing (12); the first wing (11) is sleeved on the outer surface of the swing rod (3) at the lower end of the anti-fouling silicone sleeve (8); the second wing (12) is fixedly arranged at the lower end of the first wing (11); and the outer surface of the upper end of the first wing (11) is convex.

3. The anti-fouling target flow switch according to claim 1, characterized in that: A repulsive magnetic force (13) is provided on the surface of the sealing sleeve (1) on one side of the scanning magnet (6), and the repulsive magnetic force (13) is the same as the magnetic pole close to the scanning magnet (6).

4. The anti-fouling target flow switch according to claim 1, characterized in that: A shaft ring (14) is fixedly arranged inside the sealing sleeve (1) on the outside of the shaft pin (2).

5. The anti-fouling target flow switch according to claim 1, characterized in that: A conductive wire (10) is arranged on one side of the surface of the magnetosensitive tube (7).

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