Flow switch with flow regulating structure

Abstract

The utility model provides a flow switch with flow regulation structure, including the casing, is provided with the import end and export end respectively in the both ends of casing, still include the magnetic spring switch subassembly of setting in the lateral part of casing, swing setting in the magnetic component of casing, set up flow regulation subassembly in import end, casing lateral part is provided with the mounting hole of being linked with import end and export end respectively, the magnetic component includes the mounting block of one side with mounting hole connection, swing setting in the magnet swing block of mounting block close to the one side of mounting hole, magnet swing block and magnetic spring switch subassembly magnetism is connected, the utility model provides a flow switch with flow regulation structure, through setting flow regulation subassembly in the import end of casing, through the cross section area of valve core rotation adjustment fluid flow, and then make the trigger flow regulation of magnetic spring switch fast and accurate, realized the function of flow setting and signal trigger, the compact structure of flow switch, installation safe and reliable, improved the regulation adaptability of magnetic spring flow switch.

Description

Technical Field

[0001] This utility model relates to the field of flow switch technology, and specifically to a flow switch with a flow regulation structure. Background Technology

[0002] A flow switch is a widely used device in industrial fluid control systems. It monitors the flow state of fluid in pipelines and outputs a switching signal when the flow rate reaches or falls below a set value, enabling automatic control of pumps, valves, and other actuators, or system protection. Traditional flow switches often employ mechanical or electronic sensing structures. Fluid flow pushes a baffle or paddle, actuating an internal mechanism that triggers a microswitch or reed switch. In existing technology, common reed flow switches typically include a housing and a magnetic component and a reed switch assembly housed within it. Fluid flow causes the magnetic component to oscillate, changing its relative position to the reed switch and thus triggering the switching signal.

[0003] However, existing reed flow switches require an external regulating valve to be connected in series with the switch body to adjust the flow setpoint. This results in numerous connection points in the installation structure, leading to poor flow control accuracy and increasing the risk of fluid leakage. This solution addresses this technical problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a flow switch with a flow regulation structure. By placing the flow regulation component at the inlet end of the housing and adjusting the cross-sectional area of ​​the fluid flow by rotating the valve core, the flow regulation triggered by the reed switch is fast and accurate, realizing the functions of flow setting and signal triggering. The flow switch has a compact structure, is safe and reliable to install, and improves the adjustment adaptability of the reed flow switch.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A flow switch with a flow regulation structure includes a housing, with an inlet end and an outlet end respectively provided at both ends of the housing, and also includes a reed switch assembly provided on the side of the housing, a magnetic assembly oscillatingly disposed within the housing, and a flow regulation assembly provided at the inlet end;

[0006] The side of the housing is provided with mounting holes that communicate with the inlet end and the outlet end respectively. The magnetic component includes a mounting block connected to the mounting hole on one side and a magnetic swing block that is oscillatingly disposed on the side of the mounting block near the mounting hole. The magnetic swing block is magnetically connected to the reed switch assembly. The reed switch assembly is disposed on the other side of the mounting block, and a cover plate for fixing the reed switch assembly is provided on the other side of the mounting block.

[0007] The side of the housing is provided with a valve hole communicating with the inlet end. The flow regulating assembly includes a valve core that can be detachably inserted into the valve hole and a locking rod for locking the valve core. The valve core is rotatably disposed in the valve hole. The side of the valve core is provided with an annular snap-fit ​​groove. The locking rod passes through the valve hole and snaps into the snap-fit ​​groove. The side of the valve core is provided with a through hole that allows the medium to pass through.

[0008] A hinge seat is provided on one side of the mounting block, and the magnetic pendulum block is oscillatingly mounted on the hinge seat. A mounting groove is provided on the other side of the mounting block. The reed switch assembly includes a support plate disposed in the mounting groove and a reed switch disposed on the side of the support plate. The lead wire of the reed switch extends to the outside of the mounting block.

[0009] The magnetic swing block includes a swing plate that is oscillatingly mounted on the hinge seat and a receiving box that is detachably mounted on the side of the swing plate. The receiving box contains a magnet that is inductively connected to the reed switch.

[0010] The swing plate is connected to the hinge seat by a through pin, and the mounting hole is provided with positioning grooves for accommodating both ends of the pin.

[0011] The mounting groove is provided with a plurality of positioning posts, and the support plate is provided with positioning holes corresponding to the positioning posts. The support plate is mounted on the positioning posts of the mounting groove through the positioning holes.

[0012] A sealing ring is provided between the mounting block and the mounting hole, and the cover plate, the mounting block and the housing are connected by screws inserted in sequence.

[0013] The valve core is provided with a sealing ring 2 on its side, which contacts the valve hole.

[0014] The valve core has an internal hexagonal hole at its end for rotational operation.

[0015] Both the inlet end and the outlet end are provided with external threads on their outer sides.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) By setting the flow regulating component at the inlet end of the housing, the cross-sectional area of ​​fluid flow is adjusted by the rotation of the valve core, thereby enabling the magnetic reed switch to quickly and accurately regulate the flow rate, realizing the functions of flow setting and signal triggering. The flow switch has a compact structure, is safe and reliable to install, and improves the adjustment adaptability of the magnetic reed flow switch.

[0018] (2) By cooperating with the locking rod, the valve core is installed firmly and reliably, avoiding the valve core from coming out when rotating. On the other hand, after the locking rod is pulled out, the valve core can be taken out from the valve hole, making the disassembly and maintenance of the valve core convenient and quick.

[0019] (3) The cover plate, mounting block and housing are connected by screws inserted in sequence. The magnetic reed switch assembly and magnetic assembly are installed on the housing by screws inserted in sequence. The carrier plate of the magnetic reed switch assembly is positioned by positioning pins and positioning holes, which ensures the accuracy and consistency of the relative position between the magnet and the magnetic reed switch, and ensures the stability of the product's operating performance. The installation of the flow switch is stable, reliable, convenient and quick. Attached Figure Description

[0020] Figure 1 This is an exploded view of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the magnetic reed switch assembly of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the magnetic component of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the magnetic pendulum block of this utility model;

[0024] Figure 5 This is a schematic diagram of the flow regulating component of this utility model;

[0025] Figure 6 This is a schematic diagram of the external structure of this utility model.

[0026] In the diagram: 1. Housing; 11. Inlet end; 12. Outlet end; 13. Mounting hole; 131. Positioning groove; 14. Valve hole; 2. Reed switch assembly; 21. Support plate; 212. Positioning hole; 22. Reed switch; 3. Magnetic assembly; 31. Mounting block; 311. Hinge seat; 312. Mounting groove; 3121. Positioning post; 32. Magnetic swing block; 321. Swing plate; 322. Receiving box; 323. Magnet; 324. Pin; 33. Cover plate; 4. Flow regulating assembly; 41. Valve core; 411. Snap-fit ​​groove; 412. Through hole; 413. Internal hexagonal hole; 414. Sealing ring two; 42. Locking rod; 5. Sealing ring one. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] In one embodiment, see Figures 1-6 A flow switch with a flow regulation structure includes a housing 1, with an inlet end 11 and an outlet end 12 respectively provided at both ends of the housing 1, and also includes a reed switch assembly 2 provided on the side of the housing 1, a magnetic assembly 3 oscillatingly provided inside the housing 1, and a flow regulation assembly 4 provided at the inlet end 11.

[0031] The side of the housing 1 is provided with mounting holes 13 that communicate with the inlet end 11 and the outlet end 12 respectively. The magnetic component 3 includes a mounting block 31 connected to the mounting hole 13 on one side and a magnetic swing block 32 that is oscillatingly disposed on the side of the mounting block 31 near the mounting hole 13. The magnetic swing block 32 is magnetically connected to the reed switch component 2. The reed switch component 2 is disposed on the other side of the mounting block 31. The other side of the mounting block 31 is provided with a cover plate 33 for fixing the reed switch component 2.

[0032] Specifically, the side of the housing 1 is provided with a valve hole 14 communicating with the inlet end 11. The flow regulating assembly 4 includes a valve core 41 that can be detachably inserted into the valve hole 14 and a locking rod 42 for locking the valve core 41. The valve core 41 is rotatably disposed in the valve hole 14. The side of the valve core 41 is provided with an annular snap-fit ​​groove 411. The locking rod 42 passes through the valve hole 14 and snaps into the snap-fit ​​groove 411. The side of the valve core 41 is provided with a through hole 412 that allows the medium to pass through.

[0033] Furthermore, a hinge seat 311 is provided on one side of the mounting block 31, and the magnetic swing block 32 is oscillatingly mounted on the hinge seat 311. A mounting groove 312 is provided on the other side of the mounting block 31. The magnetic reed switch assembly 2 includes a support plate 21 disposed in the mounting groove 312 and a magnetic reed switch 22 disposed on the side of the support plate 21. The lead wire of the magnetic reed switch 22 extends to the outside of the mounting block 31.

[0034] In another embodiment, the magnetic rocker block 32 includes a rocker plate 321 that is oscillatingly disposed on the hinge seat 311 and a receiving box 322 that is detachably disposed on the side of the rocker plate 321. The receiving box 322 contains a magnet 323 that is inductively connected to the reed switch 22.

[0035] Furthermore, the swing plate 321 is connected to the hinge seat 311 by a through pin 324, and the mounting hole 13 is provided with positioning grooves 131 for accommodating the two ends of the pin 324.

[0036] The mounting groove 312 is provided with a number of positioning posts 3121, and the support plate 21 is provided with positioning holes 212 corresponding to the positioning posts 3121. The support plate 21 is installed on the positioning posts 3121 of the mounting groove 312 through the positioning holes 212.

[0037] It is understandable that a sealing ring 5 is provided between the mounting block 31 and the mounting hole 13. The cover plate 33, the mounting block 31 and the housing 1 are connected by screws that are inserted in sequence. The magnetic reed switch assembly 2 and the magnetic assembly 3 are installed on the housing 1 by the screws being inserted in sequence through the cover plate 33, the mounting block 31 and the housing 1. The structure is compact and small, and the installation is convenient and quick.

[0038] A second sealing ring 414 is provided on the side of the valve core 41 to contact the valve hole 14. The sealing performance of the flow switch is improved by the setting of the first sealing ring 5 and the second sealing ring 414.

[0039] The end of the valve core 41 is provided with an internal hexagonal hole 413 for rotational operation, so as to facilitate the rotational operation of the valve core 41.

[0040] It is understandable that both the inlet end 11 and the outlet end 12 are provided with external threads on their outer sides to facilitate the connection of the flow switch with the external pipeline.

[0041] The specific working process of this utility model:

[0042] In use, first connect the inlet end 11 and the outlet end 12 to the external pipeline, ensuring that the housing 1 is installed horizontally. Then, insert an Allen wrench into the Allen hole 413 and rotate the valve core 41 to change the relative position of the through hole 412 and the inlet end 11, thereby changing the flow cross-sectional area of ​​the switch. Insert the locking rod 42 into the valve hole 14 of the housing 1 and engage it with the locking groove 411 to fix the position of the valve core 41 and prevent the valve core 41 from coming out of the housing 1.

[0043] The medium flows in from the inlet 11, passes through the through hole 412 of the valve core 41, and enters the internal flow channel of the housing 1. The flowing medium pushes the magnetic swing block 32 to swing around the pin 324, and its swing amplitude varies with the flow rate. The swing of the magnetic swing block 32 causes the magnet 323 inside it to move, changing its relative position with the reed switch 22; when the flow rate reaches the set value, the magnet 323 moves to a position sufficient to trigger the reed switch 22, the internal contacts of the reed switch 22 close (or open), and a switch signal is output to the outside through the lead wire. This signal can be used to control the start and stop of actuators such as pumps and valves, or for system alarms and protection.

[0044] When the flow rate decreases below the set value, the magnetic pendulum 32 swings back under the action of gravity, the magnet 323 moves away from the reed switch 22, the reed switch 22 resets, and the switch signal changes accordingly.

[0045] By setting the flow regulating component 4 at the inlet end 11 of the housing 1, the cross-sectional area of ​​fluid flow can be adjusted by rotating the valve core 41, thereby conveniently adjusting the trigger flow of the reed switch 22. The flow switch realizes the functions of flow setting and signal triggering. The flow switch has a compact structure, is safe and reliable to install, and improves the adjustment adaptability of the reed flow switch.

[0046] The cooperation between the valve core 41 and the locking rod 42 ensures that the valve core 41 is securely and reliably installed, preventing it from coming out during rotation. Furthermore, after the locking rod 42 is pulled out, the valve core 41 can be removed from the valve hole 14, making the disassembly and maintenance of the valve core 41 convenient and quick.

[0047] The cover plate 33, mounting block 31, and housing 1 are connected by screws inserted sequentially. The screws are inserted sequentially into the cover plate 33, mounting block 31, and housing 1 to install the reed switch assembly 2 and the magnetic assembly 3 on the housing 1. The positioning pin 3121 and the positioning hole 212 are used to position the carrier plate 21 of the reed switch assembly 2, ensuring the accuracy and consistency of the relative position between the magnet 323 and the reed switch 22, ensuring the stability of the product's operating performance, and making the installation of the flow switch stable, reliable, convenient, and quick.

[0048] Technical features not described in detail in this solution are based on conventional operations and general understanding of those skilled in the art, and are therefore not elaborated upon here. Technical features not described in this utility model can be implemented using existing technology, and will not be repeated here. Of course, the above description is not intended to limit this utility model, nor is it limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model should also fall within the protection scope of this utility model.

[0049] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A flow switch with a flow regulation structure, comprising a housing (1), wherein an inlet end (11) and an outlet end (12) are respectively provided at both ends of the housing (1), characterized in that, It also includes a reed switch assembly (2) disposed on the side of the housing (1), a magnetic assembly (3) oscillatingly disposed in the housing (1), and a flow regulating assembly (4) disposed at the inlet end (11). The side of the housing (1) is provided with mounting holes (13) that communicate with the inlet end (11) and the outlet end (12) respectively. The magnetic component (3) includes a mounting block (31) connected to the mounting hole (13) on one side and a magnetic swing block (32) swinging on the side of the mounting block (31) near the mounting hole (13). The magnetic swing block (32) is magnetically connected to the reed switch assembly (2). The reed switch assembly (2) is provided on the other side of the mounting block (31). The other side of the mounting block (31) is provided with a cover plate (33) for fixing the reed switch assembly (2).

2. The flow switch with a flow regulation structure according to claim 1, characterized in that, The side of the housing (1) is provided with a valve hole (14) communicating with the inlet end (11). The flow regulating assembly (4) includes a valve core (41) that can be separably inserted into the valve hole (14) and a locking rod (42) for locking the valve core (41). The valve core (41) is rotatably disposed in the valve hole (14). The side of the valve core (41) is provided with an annular snap-fit ​​groove (411). The locking rod (42) passes through the valve hole (14) and snaps into the snap-fit ​​groove (411). The side of the valve core (41) is provided with a through hole (412) that allows the medium to pass through.

3. The flow switch with a flow regulation structure according to claim 1, characterized in that, A hinge seat (311) is provided on one side of the mounting block (31), and the magnetic swing block (32) is oscillatingly mounted on the hinge seat (311). A mounting groove (312) is provided on the other side of the mounting block (31). The reed switch assembly (2) includes a support plate (21) disposed in the mounting groove (312) and a reed switch (22) disposed on the side of the support plate (21). The lead wire of the reed switch (22) extends to the outside of the mounting block (31).

4. The flow switch with a flow regulation structure according to claim 3, characterized in that, The magnetic swing block (32) includes a swing plate (321) swinging on the hinge seat (311) and a receiving box (322) detachably disposed on the side of the swing plate (321). The receiving box (322) contains a magnet (323) that is inductively connected to the magnetic reed switch (22).

5. The flow switch with a flow regulation structure according to claim 4, characterized in that, The swing plate (321) is connected to the hinge seat (311) by a through pin (324), and the mounting hole (13) is provided with positioning grooves (131) for accommodating the two ends of the pin (324).

6. The flow switch with a flow regulation structure according to claim 3, characterized in that, The mounting groove (312) is provided with a plurality of positioning posts (3121), and the bearing plate (21) is provided with positioning holes (212) corresponding to the positioning posts (3121). The bearing plate (21) is installed on the positioning posts (3121) of the mounting groove (312) through the positioning holes (212).

7. The flow switch with a flow regulation structure according to claim 1, characterized in that, A sealing ring (5) is provided between the mounting block (31) and the mounting hole (13), and the cover plate (33), the mounting block (31) and the housing (1) are connected by screws inserted in sequence.

8. The flow switch with a flow regulation structure according to claim 2, characterized in that, The valve core (41) is provided with a sealing ring 2 (414) on its side, which contacts the valve hole (14).

9. The flow switch with a flow regulation structure according to claim 8, characterized in that, The valve core (41) has an internal hexagonal hole (413) at its end for rotational operation.

10. The flow switch with a flow regulation structure according to claim 1, characterized in that, Both the inlet end (11) and the outlet end (12) are provided with external threads on their outer sides.

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