flow switch

Abstract

The utility model relates to flow switch technical field, and disclose flow switch, including bottom plate, the one side fixed mounting of bottom plate has the shell, and the front end fixed mounting of bottom plate has the connecting end, the inside of connecting end has the target pole to wear, and the one end outer wall of target pole wears in the shell and is equipped with the bellows seal assembly, the one side of bellows seal assembly is provided with the protection mechanism, the protection mechanism includes fixed bolster, fixed bolster fixed mounting is in the inside of bottom plate one side shell. The utility model discloses through the heat insulating pad between fixed bolster and microswitch of bracket, and cooperate lever heat insulating sleeve and inner liner pad to the wrapping of trigger end, avoid the fixed bolster of metal material and trigger end when the flow condensate, appear cold bridge effect, cause the liquefaction water pearl adsorption on microswitch or the shell fragment, and the corrosion condition of long time causes, or the water vapor water pearl is too much and possibly even cause the danger.

Description

Technical Field

[0001] This utility model relates to the field of flow switch technology, specifically flow switches. Background Technology

[0002] A water pipeline flow switch is an automated control device used to monitor changes in the flow rate of fluids (water, oil, etc.) within a pipeline and trigger a switch signal when the flow rate reaches a preset threshold. It is widely used in water supply and drainage systems, HVAC systems, industrial process control, and other fields, enabling functions such as abnormal flow alarms and equipment start-stop linkage.

[0003] An existing patent (publication number: CN222479458U) discloses a baffle-type flow switch. When water enters the flow pipe, the water will impact the flip plate, causing the flip plate to slowly open. When the flip plate is open, its rotation will drive the moving plate to move with the assistance of the sliding mechanism. When the sliding mechanism moves to the final end, the moving plate will move upward with the assistance of the sliding mechanism and the telescopic rod, which also plays a buffering role. This allows the moving plate to squeeze the switch and open it. At this time, the flip angle of the flip plate in the flow pipe can be electrically controlled.

[0004] To address the aforementioned issues, while existing patents offer solutions that utilize components such as flip plates to provide a buffering effect, in practical applications, the flow of condensate can cause liquefied water droplets to form inside the flow switch, leading to corrosion of the micro-orifice switch and impacting its lifespan and safety. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Given that the existing technology has the problem that when condensate is circulated and controlled, liquefied water droplets may appear inside the flow switch, which may cause corrosion to the micro-orifice switch and affect the service life and safety of the flow switch.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A flow switch includes a base plate, a housing is fixedly installed on one side of the base plate, and a connecting end is fixedly installed on the front end of the base plate. A target rod extends through the inside of the connecting end, and a bellows sealing assembly is sleeved on the outer wall of the end of the target rod that enters the housing. A protective mechanism is provided on one side of the bellows sealing assembly.

[0009] The protective mechanism includes a fixed bracket, which is fixedly installed inside the outer shell on one side of the base plate. A bracket heat insulation pad is fixedly installed on one side of the fixed bracket on the outer wall of the base plate. A micro switch is embedded in the inner side of the outer shell, and a spring is embedded in the outer wall of the micro switch.

[0010] As a further improvement of this utility model: a spring adjustment assembly is movably connected to one side of the inside of the fixed bracket, and a retaining ring is fixedly installed on one side of the spring adjustment assembly.

[0011] As a further embodiment of this utility model: one end of the retaining ring is fixedly installed with a trigger end, and a lever heat insulation sleeve is sleeved on the outside of the trigger end, and an inner liner is embedded in the inner wall of the lever heat insulation sleeve facing the trigger end.

[0012] As a further improvement of this utility model: a sealing ring is embedded at the front end of the bellows sealing assembly, and a connection hole is opened on the inner wall of one end of the target rod.

[0013] As a further improvement of this utility model: the outer wall of the fixed bracket is fitted with a terminal block, and a sealing mechanism is provided on one side of the terminal block.

[0014] As a further embodiment of this utility model: the sealing mechanism includes a connecting plate, which is fixedly installed on one side of the front end of the base plate, and a through sleeve extends through the interior of the connecting plate.

[0015] As a further embodiment of this utility model: a rubber pad is provided on one side of the external connecting plate of the sleeve, and a sleeve block is slidably connected to the other side of the external connecting plate of the sleeve, and a silicone head is fixedly installed at the front end of the sleeve block.

[0016] As a further embodiment of this utility model: the sleeve block is threadedly connected to the through sleeve, and the through sleeve is threadedly connected to the base plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model uses a heat-insulating pad between a bracket and a micro switch, and a lever heat-insulating sleeve and an inner liner to wrap the trigger end. This prevents the metal bracket and trigger end from having a cold bridge effect when condensate flows, which would cause liquefied water droplets to adhere to the micro switch or spring, leading to corrosion over time, or even danger due to excessive water vapor and droplets.

[0019] 2. This utility model, through the cooperation of the connecting plate, the through sleeve, the rubber pad, the sleeve block and the silicone head, can protect the connecting cable led out from the terminal and achieve a sealing effect. This prevents leakage from affecting the normal operation of the flow switch when working outdoors in severe weather such as the rainy season, thus providing a certain degree of protection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the flow switch;

[0021] Figure 2 This is a schematic diagram of the microswitch structure for a flow switch;

[0022] Figure 3 This is a schematic diagram of the spring structure of a flow switch;

[0023] Figure 4 A schematic diagram of the inner liner structure of a flow switch;

[0024] Figure 5 A schematic diagram of the bushing structure of the flow switch;

[0025] In the diagram: 1. Base plate; 2. Outer shell; 3. Connecting end; 4. Target rod; 5. Bellows sealing assembly; 6. Protective mechanism; 601. Fixed bracket; 602. Bracket heat insulation pad; 603. Micro switch; 604. Spring; 605. Spring adjustment assembly; 606. Snap ring; 607. Trigger end; 608. Lever heat insulation sleeve; 609. Inner liner; 7. Sealing ring; 8. Connecting hole; 9. Wiring terminal; 10. Sealing mechanism; 1001. Connecting plate; 1002. Through sleeve; 1003. Rubber pad; 1004. Sleeve block; 1005. Silicone head. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0029] Example 1

[0030] Please see Figures 1-4 This is the first embodiment of the present utility model.

[0031] This embodiment provides a flow switch, including a base plate 1, a housing 2 fixedly installed on one side of the base plate 1, a connecting end 3 fixedly installed at the front end of the base plate 1, a target rod 4 extending through the inside of the connecting end 3, a bellows sealing assembly 5 sleeved on the outer wall of one end of the target rod 4 that penetrates into the housing 2, and a protective mechanism 6 provided on one side of the bellows sealing assembly 5.

[0032] The protective mechanism 6 includes a fixed bracket 601, which is fixedly installed inside the outer shell 2 on one side of the base plate 1. A bracket heat insulation pad 602 is fixedly installed on one side of the fixed bracket 601 on the outer wall of the base plate 1. A micro switch 603 is embedded in the inner side of the outer shell 2. A spring 604 is embedded in the outer wall of the micro switch 603.

[0033] Specifically, a spring adjustment assembly 605 is movably connected to one side of the inside of the fixed bracket 601, and a retaining ring 606 is fixedly installed on one side of the spring adjustment assembly 605.

[0034] Furthermore, the spring adjustment assembly 605 is composed of components such as a snap ring 606, a spring, and a swing element. This is existing technology and will not be described in detail here. It enables the flow switch to be triggered and reset.

[0035] Specifically, a trigger end 607 is fixedly installed at one end of the snap ring 606, and a lever heat insulation sleeve 608 is sleeved on the outside of the trigger end 607. An inner liner 609 is embedded in the inner wall of the lever heat insulation sleeve 608 facing the trigger end 607.

[0036] Furthermore, the trigger end 607 is provided with a PVC lever heat insulation sleeve 608 and a rubber inner liner 609 to achieve a sealing effect, which can avoid the cold bridge effect and prevent the formation of liquefied water droplets, which would then adhere to the micro switch 603 and the spring 604 when triggered, affecting the safety of use.

[0037] Specifically, a sealing ring 7 is embedded at the front end of the bellows sealing assembly 5, and a connection hole 8 is opened on the inner wall of one end of the target rod 4.

[0038] Furthermore, the target rod 4 is connected to the connecting hole 8 and screwed to facilitate the installation of the valve plate. After being inserted into the tee, the flow switch can be turned on and off by the impact of the water flow through the target rod 4.

[0039] In use, the flow switch is first formed by a base plate 1, outer shell 2, connecting end 3, target rod 4, bellows sealing assembly 5, fixed bracket 601, micro switch 603, and spring 604. The connecting end 3 facilitates threaded connection with a pipe tee and, in conjunction with the spring adjustment assembly 605, allows the snap ring 606 to adjust the trigger end 607 under the impact of water flow, thereby actuating the spring 604 to trigger the micro switch 603. A bracket heat insulation pad 602 is set between the fixed bracket 601 and the micro switch 603. The fixed bracket 601 is made of metal, and the bracket heat insulation pad 602 is made of PVC, thus preventing liquefied water droplets from adhering to the micro switch 603 when condensate flows through the pipe. At the same time, the metal trigger end 607 is covered with a lever heat insulation sleeve 608 and an inner liner 609, which also prevents liquefied water droplets from adhering to the spring 604, thus achieving a protective effect.

[0040] In summary, based on a conventional flow switch, a heat insulation pad 602 is installed between the fixed bracket 601 and the micro switch 603 and fixed to the base plate 1. This eliminates the cold bridge effect, preventing liquefied water droplets from forming on the metal fixed bracket 601 when condensate flows and adhering to the micro switch 603. Simultaneously, the lever heat insulation sleeve 608 and inner liner 609 cover the trigger end 607, preventing liquefied water droplets from adhering to the micro switch 603 and spring 604 when the trigger end 607 is activated. This would prevent corrosion of the micro switch 603 over time, or even dangerous situations such as short circuits caused by excessive water droplets and moisture.

[0041] Example 2

[0042] Please see Figure 1 and Figure 5 This is the second embodiment of the present utility model.

[0043] Specifically, the outer wall of the fixed bracket 601 is fitted with a terminal 9, and a sealing mechanism 10 is provided on one side of the terminal 9.

[0044] Furthermore, the connecting cable is led out through terminal 9 and protected by sealing mechanism 10.

[0045] Specifically, the sealing mechanism 10 includes a connecting plate 1001, which is fixedly installed on one side of the front connecting end 3 of the base plate 1, and a through sleeve 1002 extends out of the inside of the connecting plate 1001.

[0046] Furthermore, the sleeve 1002 passes through the base plate 1 and is threaded to the position corresponding to the terminal 9, which facilitates the lead-out of the connecting cable and provides protection.

[0047] Specifically, a rubber pad 1003 is fitted on one side of the external connecting plate 1001 that protrudes from the sleeve 1002, and a sleeve block 1004 is slidably connected on the other side of the external connecting plate 1001 that protrudes from the sleeve 1002. A silicone head 1005 is fixedly installed at the front end of the sleeve block 1004.

[0048] Furthermore, by setting the rubber pad 1003 to be fixed to the base plate 1 after it passes through the sleeve 1002, the connecting plate 1001 is made to abut against it to further improve the sealing performance and prevent umbrellas from seeping into the flow switch when outdoors.

[0049] Specifically, the sleeve 1004 is threadedly connected to the through sleeve 1002, and the through sleeve 1002 is threadedly connected to the base plate 1.

[0050] Furthermore, the threaded connection between the sleeve 1004, the through sleeve 1002, and the base plate 1 facilitates quick disassembly and maintenance, improving overall convenience.

[0051] In use, the base plate 1 firstly uses the through-tube 1002, which is connected by bolts, to cover and protect the connecting cable passing through the terminal 9. It also works with the connecting plate 1001 to press the rubber gasket 1003 to maintain a sealing effect. The sleeve block 1004 is threadedly connected to the through-tube 1002, and the silicone head 1005 is fitted onto the connecting cable and sealed at the bottom of the through-tube 1002, further improving the overall sealing effect.

[0052] In summary, after the integrated connecting plate 1001 and the through sleeve 1002 are threadedly connected to the base plate 1, the compressed rubber gasket 1003 achieves a sealing effect. In conjunction with the sleeve block 1004, which is threadedly connected to the through sleeve 1002, the silicone head 1005 abuts against the bottom end of the through sleeve 1002 and is fitted over the outside of the connecting cable, thereby further improving the sealing performance and preventing rainwater from entering when the flow switch is working outdoors, thus achieving a certain sealing and protection effect.

[0053] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0054] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0055] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. Flow switch, including: The base plate (1) is characterized in that: a shell (2) is fixedly installed on one side of the base plate (1), and a connecting end (3) is fixedly installed at the front end of the base plate (1). A target rod (4) extends through the interior of the connecting end (3), and a bellows sealing assembly (5) is sleeved on the outer wall of one end of the target rod (4) that penetrates into the shell (2). A protective mechanism (6) is provided on one side of the bellows sealing assembly (5). The protective mechanism (6) includes a fixed bracket (601), which is fixedly installed inside the outer shell (2) on one side of the base plate (1). A bracket heat insulation pad (602) is fixedly installed on one side of the fixed bracket (601) on the outer wall of the base plate (1). A micro switch (603) is embedded in the inner side of the outer shell (2), and a spring piece (604) is embedded in the outer wall of the micro switch (603).

2. The flow switch according to claim 1, characterized in that: A spring adjustment assembly (605) is movably connected to one side of the inside of the fixed bracket (601), and a retaining ring (606) is fixedly installed on one side of the spring adjustment assembly (605).

3. The flow switch according to claim 2, characterized in that: One end of the snap ring (606) is fixedly installed with a trigger end (607), and a lever heat insulation sleeve (608) is sleeved on the outside of the trigger end (607), and an inner liner (609) is embedded in the inner wall of the lever heat insulation sleeve (608) facing the trigger end (607).

4. The flow switch according to claim 1, characterized in that: The front end of the bellows sealing assembly (5) is fitted with a sealing ring (7), and a connection hole (8) is opened on the inner wall of one end of the target rod (4).

5. The flow switch according to claim 1, characterized in that: The outer wall of the fixed bracket (601) is fitted with a terminal (9), and a sealing mechanism (10) is provided on one side of the terminal (9).

6. The flow switch according to claim 5, characterized in that: The sealing mechanism (10) includes a connecting plate (1001), which is fixedly installed on one side of the front end (3) of the base plate (1), and a through sleeve (1002) extends through the inside of the connecting plate (1001).

7. The flow switch according to claim 6, characterized in that: A rubber pad (1003) is fitted on one side of the external connecting plate (1001) of the through sleeve (1002), and a sleeve block (1004) is slidably connected on the other side of the external connecting plate (1001) of the through sleeve (1002), and a silicone head (1005) is fixedly installed at the front end of the sleeve block (1004).

8. The flow switch according to claim 7, characterized in that: The sleeve block (1004) is threadedly connected to the through sleeve (1002), and the through sleeve (1002) is threadedly connected to the base plate (1).

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