Fire fighting pressure gauge explosion-proof diaphragm type gauge case

Abstract

The utility model relates to pressure gauge shell technical field discloses a fire pressure gauge explosion -proof diaphragm type watch case, including first shell, the first shell rear end is installed with second shell, the second shell rear end inner wall is connected with fixed plate through fixed component, the first shell inner wall is fixedly connected with dial, the dial inner wall is rotatably connected with pointer, the pointer rear end outer wall is fixedly connected with gear, the gear outer diameter is connected with arc toothed plate, and arc toothed plate bottom end inner wall rotatably connected with fixed axle. In the utility model, the distance of fixed plate movement is controlled by the angle of rotating disc rotation, so as to fix the explosion -proof diaphragm of different size, and the connecting rod is connected through rotating handle, bolt, first lock ring, second lock ring, guide rod and connecting rod, and the filter screen installed on the connecting shaft is used to complete the filtration of the detected object, prevents the impurity from entering the spring tube, prolongs the service life of fire pressure gauge.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge housing technology, and in particular to an explosion-proof diaphragm type housing for a fire-fighting pressure gauge. Background Technology

[0002] Fire pressure gauges are indispensable equipment in fire protection systems, used to measure the pressure within fire pipelines to ensure the system functions properly in critical moments. During a fire, accurate pressure readings are crucial for firefighters to assess the system's operational status and take effective firefighting measures. The explosion-proof diaphragm on the fire pressure gauge prevents it from rupturing due to increased pressure inside the gauge in the event of excessive pressure and a broken Bourdon tube, thus ensuring safety.

[0003] In the existing technology, a type of explosion-proof diaphragm housing for fire pressure gauges has the following problems or disadvantages during use: First, because different sizes of explosion-proof diaphragms cannot be fixed in the same housing, it is necessary to match different sizes of explosion-proof diaphragms according to the size of the housing. When the required size of explosion-proof diaphragm is not available, the remaining explosion-proof diaphragms cannot be used, wasting resources; Second, because particles and other substances that may fall off from the conduit that needs to measure pressure due to aging or other reasons may enter the Bourdon tube and accumulate inside the Bourdon tube, the service life of the fire pressure gauge is reduced. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an explosion-proof diaphragm housing for fire pressure gauges.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a fire-fighting pressure gauge explosion-proof diaphragm type housing, including a first outer shell, a second outer shell installed at the rear end of the first outer shell, a fixing plate connected to the inner wall of the rear end of the second outer shell via a fixing assembly, a dial fixedly connected to the inner wall of the first outer shell, a pointer rotatably connected to the inner wall of the dial, a gear fixedly connected to the outer wall of the rear end of the pointer, an arc-shaped toothed plate meshing with the outer diameter of the gear, a fixing shaft rotatably connected to the inner wall of the bottom end of the arc-shaped toothed plate, the front end of the fixing shaft fixedly connected to the rear end of the dial, a rotating shaft rotatably connected to the outer wall of the bottom end of the arc-shaped toothed plate, a spring tube rotatably connected to the inner wall of the right end of the rotating shaft, a guide rod fixedly connected to the outer wall of the other end of the spring tube, and a filter screen connected to the outer wall of the bottom end of the guide rod via a filter assembly.

[0006] As a further description of the above technical solution:

[0007] The fixing component includes a slot disposed at the rear end of the inner wall of the second housing, a turntable slidably connected to the outer wall of the slot, an explosion-proof membrane body installed at the rear end of the inner wall of the second housing, the front end of the explosion-proof membrane body being installed at the rear end of the fixing plate, the outer wall of the fixing plate being slidably connected to the inner wall of the turntable, a sliding groove disposed at the front end of the inner wall of the second housing, and the rear end of the fixing plate being slidably connected to the outer wall of the sliding groove.

[0008] As a further description of the above technical solution:

[0009] The outer wall of the fixing plate is slidably connected to the inner wall of the turntable, and a groove is provided at the front end of the inner wall of the second outer shell, and the rear end of the fixing plate is slidably connected to the outer wall of the groove.

[0010] As a further description of the above technical solution:

[0011] A fixed platform is fixedly connected to the front end of the turntable. A spring buckle is fixedly connected to the top of the inner wall of the fixed platform. A buckle is fixedly connected to the bottom end of the spring buckle. The buckle is slidably connected to the inner wall of the fixed platform. A slot is provided at the bottom end of the second outer shell. The buckle can be fixed through the slot.

[0012] As a further description of the above technical solution:

[0013] The filter assembly includes a connecting shaft installed on the outer wall of the bottom end of the guide rod. A second locking ring is rotatably connected to the front end of the connecting shaft, and a first locking ring is rotatably connected to the rear end of the connecting shaft. The right end of the connecting shaft is installed on the left end of the filter screen.

[0014] As a further description of the above technical solution:

[0015] The right end of the first locking ring is rotatably connected to a handle, and the bottom inner wall of the handle is rotatably connected to a pin.

[0016] As a further description of the above technical solution:

[0017] A connecting pipe is installed on the outer wall of the bottom end of the guide rod via a connecting shaft, and the outer wall of the guide rod is fixedly connected to and passes through the inner wall of the bottom end of the first housing.

[0018] This utility model has the following beneficial effects:

[0019] In this invention, the fixed plate is first moved by pulling the buckle to rotate the turntable, the damaged explosion-proof diaphragm is taken out, and the intact explosion-proof diaphragm is put in. The turntable is then rotated in the opposite direction. By controlling the rotation angle of the turntable and the moving distance of the fixed plate, explosion-proof diaphragm bodies of different sizes can be fixed, so that explosion-proof diaphragms of different sizes can be used for explosion-proof fire meters, thus saving resources.

[0020] In this invention, the connecting pipe and guide rod are fixed by rotating the handle, the pin, the first locking ring, and the second locking ring. The filter screen filters the object being tested, preventing impurities from entering the spring tube and extending the service life of the fire pressure gauge. Attached Figure Description

[0021] Figure 1 This is a perspective view of an explosion-proof diaphragm housing for a fire-fighting pressure gauge proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the spring tube structure of an explosion-proof diaphragm type housing for a fire pressure gauge proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the gear structure of an explosion-proof diaphragm housing for a fire-fighting pressure gauge proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the rotating structure of an explosion-proof diaphragm type housing for a fire pressure gauge proposed in this utility model.

[0025] Figure 5 This is a schematic diagram of the handle structure of an explosion-proof diaphragm type housing for a fire pressure gauge proposed in this utility model.

[0026] Figure 6 This is a schematic diagram of the filter structure of an explosion-proof diaphragm housing for a fire-fighting pressure gauge proposed in this utility model.

[0027] Legend:

[0028] 1. First outer casing; 2. Second outer casing; 3. Dial; 4. Gear; 5. Arc-shaped toothed plate; 6. Fixed shaft; 7. Rotating shaft; 8. Pointer; 9. Bourdon tube; 10. Guide rod; 11. Slot; 12. Turntable; 13. Fixed plate; 14. Fixed platform; 15. Spring buckle; 16. Buckle; 17. First locking ring; 18. Second locking ring; 19. Connecting shaft; 20. Explosion-proof membrane body; 21. Filter screen; 22. Handle; 23. Pin; 24. Connecting tube. Detailed Implementation

[0029] 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 protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. 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 a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] Reference Figures 1-3 One embodiment of this utility model is a fire-fighting pressure gauge explosion-proof diaphragm type housing, including a first outer shell 1, and a second outer shell 2 installed at the rear end of the first outer shell 1, as shown in the figure. Figure 4 A fixing plate 13 is connected to the inner wall of the rear end of the second outer shell 2 via a fixing assembly. A dial 3 is fixedly connected to the inner wall of the first outer shell 1. A pointer 8 is rotatably connected to the inner wall of the dial 3. A gear 4 is fixedly connected to the outer wall of the rear end of the pointer 8. An arc-shaped toothed plate 5 is meshed with the outer diameter of the gear 4. A fixing shaft 6 is rotatably connected to the inner wall of the bottom end of the arc-shaped toothed plate 5. The front end of the fixing shaft 6 is fixedly connected to the rear end of the dial 3. A rotating shaft 7 is rotatably connected to the outer wall of the bottom end of the arc-shaped toothed plate 5. A spring tube 9 is rotatably connected to the inner wall of the right end of the rotating shaft 7. A guide rod 10 is fixedly connected to the outer wall of the other end of the spring tube 9. The outer wall of the bottom end of the guide rod 10 is connected via a fixing assembly. The filter assembly is connected to a filter screen 21. The rear end of the first housing 1 and the front end of the second housing 2 are both provided with threads. The first housing 1 and the second housing 2 are installed by the threads. The fire pressure gauge is connected to the pipe being tested, the connecting pipe 24, through the connecting shaft 19, etc. The connecting pipe 24, the guide rod 10, and the spring tube 9 are all interconnected. The pressure substance being tested enters the fire pressure gauge through the connecting pipe 24. Due to the pressure, the spring tube 9 gradually straightens. The greater the pressure, the greater the extension and contraction of the spring tube 9. The extension and contraction of the spring tube 9 drives the pointer 8 to rotate. The pressure is judged by the rotation of the pointer 8 and the dial 3.

[0032] Reference Figures 3-5The fixing assembly includes a slot 11 located at the rear end of the inner wall of the second outer shell 2. A turntable 12 is slidably connected to the outer wall of the slot 11. An explosion-proof membrane body 20 is installed at the rear end of the inner wall of the second outer shell 2. The front end of the explosion-proof membrane body 20 is installed at the rear end of a fixing plate 13. The outer wall of the fixing plate 13 is slidably connected to the inner wall of the turntable 12. A sliding groove is provided at the front end of the inner wall of the second outer shell 2. The rear end of the fixing plate 13 is slidably connected to the outer wall of the sliding groove. The outer wall of the fixing plate 13 is slidably connected to the inner wall of the turntable 12. A sliding groove is provided at the front end of the inner wall of the second outer shell 2. The rear end of the fixing plate 13 is slidably connected to the outer wall of the sliding groove. A fixing platform 14 is fixedly connected to the front end of the turntable 12. A spring buckle 15 is fixedly connected to the top of the inner wall of the fixing platform 14. A buckle 16 is fixedly connected to the bottom end of the spring buckle 15. The buckle 16 is slidably connected to the inner wall of the fixing platform 14. A slot is provided at the bottom end of the second outer shell 2. The buckle 16 can be fixed through the slot. (Refer to...) Figure 6 The filter assembly includes a connecting shaft 19 mounted on the outer wall of the bottom end of the guide rod 10. A second locking ring 18 is rotatably connected to the front end of the connecting shaft 19, and a first locking ring 17 is rotatably connected to the rear end of the connecting shaft 19. The right end of the connecting shaft 19 is mounted on the left end of the filter screen 21. A handle 22 is rotatably connected to the right end of the first locking ring 17. A pin 23 is rotatably connected to the inner wall of the bottom end of the handle 22. A connecting tube 24 is mounted on the outer wall of the bottom end of the guide rod 10 via the connecting shaft 19. The outer wall of the guide rod 10 is fixedly connected to and passes through the inner wall of the bottom end of the first housing 1. The pin 23 is then pushed... Insert the end into the inner wall of the right end of the second locking ring 18 and push down the handle 22 to make the pin 23 rotate around the top end. This causes the pin 23 and the handle 22 to rotate to the left of the connection between the pin 23 and the second locking ring 18. At this time, the pin 23 forms a rigid constraint on the first locking ring 17 and the second locking ring 18, restricting the displacement of the first locking ring 17 and the second locking ring 18. The length of the first locking ring 17, the second locking ring 18 and the inner wall of the connecting shaft 19 is the same as the sum of the widths of the top end of the connecting tube 24, the bottom end of the guide rod 10 and the filter screen 21.

[0033] Working principle: First, pull the handle 22 forward to rotate the pin 23, and rotate the first locking ring 17 and the second locking ring 18. Place the connecting pipe 24 of the pipe to be tested and the guide rod 10 of the fire pressure gauge into the inner walls of the first locking ring 17 and the second locking ring 18, on both sides of the filter screen 21. Rotate the first locking ring 17 and the second locking ring 18 to close them. Rotate the pin 23 to fix it to the right end of the second locking ring 18. Pull the handle 22 down to fix the first locking ring 17, the second locking ring 18, and the pin 23. The object to be tested enters the guide rod 10 and the spring tube 9 through the connecting pipe 24, the filter screen 21, and the spring tube 9. Due to the pressure, the spring tube 9 gradually straightens from a bent state, causing the connection between the spring tube 9 and the rotating shaft 7 to move. The rotating shaft 7 drives the arc-shaped toothed plate 5 to rotate around the fixed shaft 6, and the arc-shaped toothed plate 5 drives the gear 4. As the pointer 8 rotates, the pressure value can be read on the dial 3. To prevent the fire pressure gauge from bursting, an explosion-proof membrane body 20 is provided. When the pressure is too high and breaks through the spring tube 9, the pressure inside the gauge case gradually increases, breaking the explosion-proof membrane. The explosion-proof membrane needs to be replaced. Rotate the second outer shell 2 to remove it. Pull the buckle 16 upward. The buckle 16 squeezes the spring buckle 15 and moves it out of the slot of the second outer shell 2. Rotate the turntable 12 to move the fixing plate 13 to the four sides. Take out the damaged explosion-proof membrane body 20 and put in the intact explosion-proof membrane body 20. Rotate the turntable 12 in the opposite direction to make the fixing plate 13 move towards the center. Rotate the fixed plate 13 at an appropriate angle according to the size of the explosion-proof membrane body 20. When the fixing plate 13 completely fixes the explosion-proof membrane body 20, fix the buckle 16 in the slot of the second outer shell 2 to complete the replacement of the explosion-proof membrane body 20.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fire-fighting pressure gauge explosion-proof diaphragm type housing, comprising a first outer shell (1), characterized in that: A second outer shell (2) is installed at the rear end of the first outer shell (1). A fixing plate (13) is connected to the inner wall of the rear end of the second outer shell (2) through a fixing component. A dial (3) is fixedly connected to the inner wall of the first outer shell (1). A pointer (8) is rotatably connected to the inner wall of the dial (3). A gear (4) is fixedly connected to the outer wall of the rear end of the pointer (8). An arc-shaped toothed plate (5) is meshed with the outer diameter of the gear (4). A fixing shaft (6) is rotatably connected to the inner wall of the bottom end of the arc-shaped toothed plate (5). The front end of the fixing shaft (6) is fixedly connected to the rear end of the dial (3). A rotating shaft (7) is rotatably connected to the outer wall of the bottom end of the arc-shaped toothed plate (5). A spring tube (9) is rotatably connected to the inner wall of the right end of the rotating shaft (7). A guide rod (10) is fixedly connected to the outer wall of the other end of the spring tube (9). A filter screen (21) is connected to the outer wall of the bottom end of the guide rod (10) through a filter component.

2. The explosion-proof diaphragm housing of a fire-fighting pressure gauge according to claim 1, characterized in that: The fixing component includes a slot (11) located at the rear end of the inner wall of the second housing (2). A turntable (12) is slidably connected to the outer wall of the slot (11). An explosion-proof membrane body (20) is installed at the rear end of the inner wall of the second housing (2). The front end of the explosion-proof membrane body (20) is installed at the rear end of the fixing plate (13). The outer wall of the fixing plate (13) is slidably connected to the inner wall of the turntable (12). A sliding groove is provided at the front end of the inner wall of the second housing (2). The rear end of the fixing plate (13) is slidably connected to the outer wall of the sliding groove.

3. The explosion-proof diaphragm housing of a fire-fighting pressure gauge according to claim 1, characterized in that: The outer wall of the fixing plate (13) is slidably connected to the inner wall of the turntable (12), and the front end of the inner wall of the second outer shell (2) is provided with a sliding groove, and the rear end of the fixing plate (13) is slidably connected to the outer wall of the sliding groove.

4. The explosion-proof diaphragm housing of a fire-fighting pressure gauge according to claim 2, characterized in that: The turntable (12) is fixedly connected to a fixed platform (14) at the front end. A spring buckle (15) is fixedly connected to the top of the inner wall of the fixed platform (14). A buckle (16) is fixedly connected to the bottom of the spring buckle (15). The buckle (16) is slidably connected to the inner wall of the fixed platform (14). A slot is provided at the bottom of the second outer shell (2). The buckle (16) can be fixed through the slot.

5. The explosion-proof diaphragm housing of a fire-fighting pressure gauge according to claim 1, characterized in that: The filter assembly includes a connecting shaft (19) installed on the outer wall of the bottom end of the guide rod (10). The front end of the connecting shaft (19) is rotatably connected to a second locking ring (18), and the rear end of the connecting shaft (19) is rotatably connected to a first locking ring (17). The right end of the connecting shaft (19) is installed on the left end of the filter screen (21).

6. The explosion-proof diaphragm housing of a fire-fighting pressure gauge according to claim 5, characterized in that: The right end of the first locking ring (17) is rotatably connected to a handle (22), and the inner wall of the bottom end of the handle (22) is rotatably connected to a pin (23).

7. The explosion-proof diaphragm housing of a fire pressure gauge according to claim 6, characterized in that: The guide rod (10) has a connecting pipe (24) installed on its bottom outer wall via a connecting shaft (19). The outer wall of the guide rod (10) is fixedly connected to and passes through the bottom inner wall of the first outer shell (1).

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