Pressure switch of fire alarm valve group
By improving the design of the fixing bracket for the pressure switch of the fire alarm valve group, adopting an arch structure and a composite protective layer, the problems of inconvenient fixing of the micro switch and easy corrosion of the bracket were solved, achieving efficient fixing and extended service life.
Patent Information
- Application Number
- CN202520637201.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-04-07
AI Technical Summary
In existing fire alarm valve group pressure switches, the micro switch requires multiple bolts and nuts for fixing, resulting in low assembly efficiency and high cost. At the same time, the fixing bracket is prone to corrosion in humid environments, resulting in a short service life.
The fixed bracket is designed as an arch structure with strip grooves and fixing holes. The micro switch is fixed by a set of bolts and nuts. The surface of the bracket is coated with a composite protective layer (iron oxide and pyrolytic carbon coating), and weight reduction holes are set on the bracket to reduce weight and cost.
It improves the fixing efficiency of microswitches, reduces production costs, and extends the service life of the fixing bracket through the composite protective layer, while enhancing corrosion resistance and wear resistance.
Smart Images
Figure CN223768561U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pressure switch technology, and more specifically to a pressure switch for a fire alarm valve assembly. Background Technology
[0002] The sensor is the core component of the valve group pressure switch. The sensor includes two sets of microswitches, a main bracket and a secondary bracket. The two sets of microswitches are located between the main bracket and the secondary bracket. The main bracket and the secondary bracket are fixed to the microswitches by four sets of bolts and nuts. Each microswitch requires two sets of bolts and nuts to prevent the microswitch from rotating due to insecure fixing. However, a large number of bolts and nuts will reduce assembly efficiency and increase costs. Therefore, it is necessary to optimize the structure. Utility Model Content
[0003] The purpose of this utility model is to provide a pressure switch for a fire alarm valve assembly in order to solve the above-mentioned technical problems.
[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0005] A pressure switch for a fire alarm valve assembly includes a micro switch, with fixed supports on both sides of the micro switch, the fixed supports having an arch structure;
[0006] The mounting bracket has strip-shaped grooves on its sidewalls, with four mounting holes in each groove. A microswitch is positioned between two grooves and connected by bolts and nuts. The first two mounting holes form one group, and the last two form another. One mounting hole is selected from each group, and the microswitch is secured to the mounting bracket using bolts and nuts. Two microswitches are placed side-by-side between the strip-shaped grooves. The grooves limit the movement of the microswitches, preventing rotation. Each microswitch requires only one set of bolts and nuts for secure mounting.
[0007] The bottom of each of the two legs of the mounting bracket has mounting holes. Bolts are installed in the mounting holes to fix the mounting bracket to the top of the pressure switch interface.
[0008] The depth of the strip groove is 1-2 mm.
[0009] The surface of the mounting bracket is coated with a composite protective layer, which includes a bottom layer and an outer layer. The bottom layer is an iron oxide coating, and the outer layer is a pyrolytic carbon coating. The iron oxide coating is a dense passivating material that effectively blocks corrosive media, providing excellent corrosion resistance. The pyrolytic carbon coating gives the material both corrosion resistance and wear resistance. During the production process, the mounting brackets are stacked and stored. In humid environments, they are prone to corrosion and rust, and are easily scratched. This invention effectively solves these problems by using a composite protective layer, significantly extending the service life of the mounting bracket compared to existing models. Both the pyrolytic carbon coating and the iron oxide coating are 5μm thick.
[0010] The fixed bracket is provided with weight-reducing holes, each end of which connects to a fixed hole. The width of the weight-reducing hole is half the diameter of the fixed hole. By setting weight-reducing holes to reduce the weight of the fixed bracket, production costs can be effectively reduced and enterprise efficiency improved during large-scale production. In addition, limiting the width of the weight-reducing holes prevents the fixed holes from becoming unusable due to their excessive width.
[0011] The beneficial effects of this utility model are as follows:
[0012] This invention uses a strip-shaped groove to fix the edge of the micro switch, so that a micro switch can be effectively fixed with only one set of bolts and nuts. Under large-scale production, this can greatly reduce the production cost of enterprises and improve their production efficiency. The composite protective layer extends the service life of the fixing bracket. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 yes Figure 1 A structural diagram with one fixed support removed;
[0015] Figure 3 This is a structural diagram of the fixed bracket;
[0016] Figure 4 This is a schematic diagram of a structure with weight-reduction holes on a fixed bracket;
[0017] Figure 5 This is a schematic diagram of the composite protective layer.
[0018] Reference numerals in the attached diagram: 1. Micro switch; 2. Mounting bracket; 3. Strip groove; 4. Mounting hole; 5. Mounting hole; 6. Bottom layer; 7. Outer layer; 8. Weight reduction hole. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0021] Example 1
[0022] like Figures 1 to 5 As shown, this embodiment provides a fire alarm valve group pressure switch, including a micro switch 1, and fixed brackets 2 are respectively provided on both sides of the micro switch 1. The fixed brackets 2 have an arch structure.
[0023] The side wall of the fixed bracket 2 has a strip-shaped groove 3 with four fixing holes 4. A micro switch 1 is placed between two strip-shaped grooves 3 and connected by bolts and nuts. The first two fixing holes 4 are set as one group, and the last two fixing holes 4 are set as two groups. One fixing hole 4 is selected from each group, and the micro switch 1 is fixed to the fixed bracket 2 in the selected fixing hole 4 by bolts and nuts. Two micro switches 1 are placed side by side between the strip-shaped grooves 3. The strip-shaped grooves 3 limit the edge of the micro switch 1 to prevent rotation. Each micro switch 1 only requires one set of bolts and nuts for fixation.
[0024] The bottom of the two legs of the fixed bracket 2 is provided with mounting holes 5. Bolts are installed in the mounting holes 5, and the fixed bracket 2 is fixed to the top of the interface of the pressure switch by the bolts.
[0025] The depth of the strip groove 3 is 1-2mm.
[0026] The surface of the fixing bracket 2 is coated with a composite protective layer, which includes a bottom layer 6 and an outer layer 7. The bottom layer 6 is an iron oxide coating, and the outer layer 7 is a pyrolytic carbon coating. The iron oxide coating is a dense passivating material that can effectively block corrosive media and provide excellent corrosion resistance. The pyrolytic carbon coating gives the material both corrosion resistance and wear resistance. During the production process, the fixing bracket 2 is stacked and stored. If it is exposed to a humid environment, it is prone to corrosion and rust, and is also easily scratched. This invention solves the above-mentioned technical problems by setting a composite protective layer, which can greatly extend the service life of the fixing bracket 2 compared to existing fixing brackets. Both the pyrolytic carbon coating and the iron oxide coating are 5μm thick.
[0027] The fixed bracket 2 is provided with weight-reducing holes 8, each end of which is connected to a fixed hole 4. The width of the weight-reducing hole 8 is half the diameter of the fixed hole 4. By setting the weight-reducing holes 8, the weight of the fixed bracket 2 is reduced. In large-scale production, this can effectively reduce production costs and improve enterprise efficiency. In addition, limiting the width of the weight-reducing holes 8 is to prevent the fixed holes 4 from becoming unusable due to their excessive width.
Claims
1. A fire alarm valve group pressure switch comprising a microswitch, both sides of the microswitch are respectively provided with fixed supports, the fixed supports are in the shape of an arch; characterized in that: the side wall of the fixed support is provided with a strip-shaped groove, four fixing holes are arranged on the strip-shaped groove, and the microswitch is arranged between the two strip-shaped grooves and connected through bolts and nuts.
2. The fire alarm valve group pressure switch according to claim 1, wherein, The bottom of the two feet of the fixed support is provided with a mounting hole.
3. The fire alarm valve group pressure switch of claim 1, wherein, The depth of the strip-shaped groove is 1-2 mm.
4. The fire alarm valve group pressure switch of claim 1, wherein, The surface of the fixed support is sprayed with a composite protective layer, the composite protective layer comprises a bottom layer and an outer layer, the bottom layer is an iron oxide coating, and the outer layer is a pyrolytic carbon coating.
5. The fire alarm valve group pressure switch of claim 1, wherein, The fixed support is provided with a weight-reducing hole, the weight-reducing hole is in communication with one of the fixing holes at each end, and the width of the weight-reducing hole is half of the diameter of the fixing hole.