Dry and wet zoning safety device

Abstract

The utility model relates to a dry and wet zoning safety device, which belongs to the technical field of fire fighting equipment, and comprises a drain pipe, a trace discharge valve and a weir plate, the weir plate is arranged on a dry pipe and partially seals the lower part of a pipe hole of the dry pipe, the water inlet end of the dry pipe is communicated with the water outlet end of a wet pipe through a main valve, and the water outlet end of the wet pipe is communicated with the main valve. By the adoption of the structure, the lower portion of a pipe hole of the dry type pipe is partially sealed through the weir plate, when a small amount of leakage occurs on the main valve, water flow can be blocked by the weir plate and cannot enter a downstream pipe section, and the water flow is accumulated more and more, so that the water flow is prevented from entering the downstream pipe section. The blocked water flow is drained through the trace discharge valve and the drainage pipe, so that leaked water is drained in time, potential safety hazards such as ice blockage and frost cracking in winter of a downstream dry area pipe are eradicated, the trace discharge valve only allows trace water flow to pass through, the main valve is automatically closed when normally opened, and water filling of the dry area pipe is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire-fighting equipment, and particularly relates to a dry-wet partition safety device. Background Art

[0002] For special working conditions, such as rooms with temperatures below 4°C or above 70°C or having precision instruments, indoor fire-fighting or fire-fighting in frozen areas generally adopts a dry system. Dry hydrants, dry sprinklers, and pre-action water sprinkler systems are widely used in the fire-fighting design of industrial and civil buildings. The dry system generally uses valves such as pre-action alarm valves, deluge valves, electric valves, and solenoid valves as the separation equipment between the wet pipe and the dry pipe. The system often automatically opens through signals or electric control operations to fill water for the downstream dry system.

[0003] When a fire occurs in the dry fire-fighting system, it is necessary to open the main valve to convey the fire-fighting water from the wet area filled with water usually to the dry area pipe that is not filled with water usually, so as to realize the dry-wet conversion from no water to water in the dry area pipe. The existing pipe dry-wet conversion is only realized through the main valve. If there is a leakage of the main valve or the system maloperation causes the fire-fighting water to continuously flow to the downstream dry system in a small flow rate and is not discovered, it will cause the accumulated water in the downstream dry area to be more and more and cannot be discharged in time, which will cause certain potential safety hazards to the area to be protected.

[0004] Therefore, a dry-wet partition safety device that can discharge the leaked water in time and avoid the potential hazards caused by the accumulated water in the dry area is urgently needed. Content of the Utility Model

[0005] The utility model provides a dry-wet partition safety device to solve the technical problem in the prior art that when the main valve leaks, the leaked water cannot be discharged in time, resulting in more and more accumulated water in the dry area and causing potential safety hazards.

[0006] The utility model is realized through the following technical solutions: a dry-wet partition safety device, characterized in that: it includes a drain pipe, a micro-leakage valve, and a weir plate. The weir plate is arranged on the dry pipe and partially closes the lower part of the pipe hole of the dry pipe. The water inlet end of the dry pipe is connected to the water outlet end of the wet pipe through a main valve. The drain pipe is connected to the bottom wall of the dry pipe and is located between the main valve and the weir plate. The micro-leakage valve is arranged on the drain pipe.

[0007] In order to better realize the utility model, further optimization is made in the above structure. The drain pipe includes a vertical pipe, a horizontal pipe, and an inverted U-shaped pipe. The top end of the vertical pipe is connected to the dry pipe. One end of the horizontal pipe is connected to the bottom end of the vertical pipe through the micro-leakage valve and the other end is connected to the inverted U-shaped pipe. The height position of the U-shaped section of the inverted U-shaped pipe is higher than that of the horizontal pipe.

[0008] To better implement the present utility model, further optimization is made to the above structure, which further includes a water leakage alarm fixed in the pipe hole of the horizontal pipe.

[0009] To better implement the present utility model, further optimization is made to the above structure, which further includes a bypass pipe. One end of the bypass pipe is communicated with the bottom wall of the horizontal pipe, and the other end is bypassed with the drainage end of the inverted U-shaped pipe. A vent valve is provided on the bypass pipe.

[0010] To better implement the present utility model, further optimization is made to the above structure, which further includes a test pipe. One end of the test pipe is communicated with the vertical pipe, and the other end is connected to an external water source. A test valve is provided on the test pipe.

[0011] To better implement the present utility model, further optimization is made to the above structure. The micro-leakage valve includes a valve body, a valve plate and a central shaft. The valve plate is coaxially fixed on the central shaft. The valve body is provided with a water inlet and a water outlet. An upper support plate is provided in the valve body near the water inlet, and a lower support plate is provided in the valve body near the water outlet. Both ends of the central shaft pass through the central holes of the upper support plate and the lower support plate respectively and can move up and down synchronously with the valve plate. A spring is sleeved on the lower part of the central shaft. A gap is formed between the valve plate and the inner wall of the valve body under the elastic force of the spring. When a small amount of leakage occurs in the main valve, water flows through the gap and into the drain pipe through the water outlet. When the main valve is normally opened to supply a large amount of water to the dry pipe, the valve plate is forced by the water pressure to overcome the elastic force of the spring and move down together with the central shaft to close the water outlet.

[0012] To better implement the present utility model, further optimization is made to the above structure. The valve body includes an upper valve body and a lower valve body, and the upper valve body and the lower valve body are connected into one body by internal and external threads.

[0013] To better implement the present utility model, further optimization is made to the above structure. The main valve, the vent valve and the test valve are electric valves or manual valves.

[0014] The present utility model has the following beneficial effects compared with the prior art:

[0015] The dry-wet partition safety device provided by the present utility model includes a drain pipe, a micro-leakage valve, and a weir plate. The weir plate is arranged on the dry pipe and partially closes the lower part of the pipe hole of the dry pipe. The water inlet end of the dry pipe is communicated with the water outlet end of the wet pipe through a main valve. The drain pipe is communicated with the bottom wall of the dry pipe and is located between the main valve and the weir plate. The micro-leakage valve is arranged on the drain pipe. With this structure, by setting the weir plate to partially close the lower part of the pipe hole of the dry pipe, when there is a small leakage in the main valve, the water flow will be blocked by the weir plate and will not accumulate more and more in the downstream pipe section. The blocked water flow is then drained through the micro-leakage valve and the drain pipe, so as to drain the leaked water in time and eliminate potential safety hazards such as ice blockage and freezing crack in the downstream dry area pipe in winter. The micro-leakage valve only allows a small amount of water flow to pass through and automatically closes when the main valve is normally opened, without affecting the water filling of the dry area pipeline, making the present utility model more practical. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the dry-wet partition safety device in the present utility model;

[0018] Figure 2 It is a schematic diagram of the weir plate partially closing the dry pipe in the present utility model;

[0019] Figure 3 It is a schematic structural diagram of the micro-leakage valve in the present utility model;

[0020] Figure 4 It is a schematic structural diagram of the dry-wet partition safety device without the weir plate in the present utility model.

[0021] In the figure:

[0022] 1 - drain pipe; 2 - micro-leakage valve; 3 - weir plate; 4 - dry pipe; 5 - main valve; 6 - vertical pipe; 7 - horizontal pipe; 8 - inverted U-shaped pipe; 9 - leakage alarm; 10 - bypass pipe; 11 - vent valve; 12 - test pipe; 13 - test valve; 14 - upper valve body; 15 - lower valve body; 16 - valve plate; 17 - water inlet; 18 - water outlet; 19 - upper support plate; 20 - lower support plate; 21 - central axis; 22 - spring. Detailed Embodiment

[0023] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope protected by the present utility model.

[0024] In the description of the present utility model, it should be noted that unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] Embodiment 1:

[0027] In this embodiment, a dry-wet partition safety device, as Figures 1 to 3 shown, includes a drain pipe 1, a micro-flow discharge valve 2 and a weir plate 3. Specifically, the above weir plate 3 is arranged on the dry pipe 4 and partially closes the lower part of the pipe hole of the dry pipe 4. When the water volume is small, the above weir plate 3 can play a blocking role. The water inlet end of the above dry pipe 4 is connected to the water outlet end of the wet pipe through a main valve 5. The above drain pipe 1 is connected to the bottom wall of the above dry pipe 4 and is located between the above main valve 5 and the weir plate 3. The above drain pipe 1 is used to timely discharge a small amount of water leakage in the dry pipe 4. The above micro-flow discharge valve 2 is arranged on the above drain pipe 1, and the above micro-flow discharge valve 2 plays the role of draining water when the water volume is small and blocking water when the water volume is large.

[0028] With this structure, by setting the above-mentioned weir plate 3 to partially enclose the lower part of the pipe hole of the above-mentioned dry pipe 4, when there is a small amount of leakage in the above-mentioned main valve 5, the water flow will be blocked by the above-mentioned weir plate 3 and will not accumulate more and more in the downstream pipe section. The blocked water flow is then drained by the above-mentioned micro-leakage valve 2 and the drain pipe 1, so as to drain the leaked water in time and eliminate potential safety hazards such as ice blockage and freezing cracks in the downstream dry area pipes in winter. The above-mentioned micro-leakage valve 2 only allows a small amount of water flow to pass through, and automatically closes when the above-mentioned main valve 5 is normally opened, without affecting the water filling of the dry area pipeline, making the practicality of the present utility model stronger.

[0029] It should be noted that, as Figure 4 shown, a section of the above-mentioned dry pipe 4 close to the above-mentioned main valve 5 can also be integrally sunken in a U shape, so that the above-mentioned drain pipe 1 is communicated with the sunken section, so that the above-mentioned weir plate 3 does not need to be set, and it can also play a role in intercepting a small amount of water passing through and draining it in time.

[0030] As a specific implementation manner of this embodiment, as Figure 1 shown, the above-mentioned drain pipe 1 includes a vertical pipe 6, a horizontal pipe 7 and an inverted U-shaped pipe 8. Among them, the top end of the above-mentioned vertical pipe 6 is communicated with the above-mentioned dry pipe 4. The vertically arranged above-mentioned vertical pipe 6 facilitates the rapid fall of the leaked water in the dry pipe 4. One end of the above-mentioned horizontal pipe 7 is communicated with the bottom end of the vertical pipe 6 through the above-mentioned micro-leakage valve 2 and the other end is communicated with the above-mentioned inverted U-shaped pipe 8. The height position of the U-shaped section of the above-mentioned inverted U-shaped pipe 8 is higher than that of the above-mentioned horizontal pipe 7. With such a setting, the leaked water is discharged after passing through the above-mentioned vertical pipe 6, micro-leakage valve 2, horizontal pipe 7 and inverted U-shaped pipe 8. The leaked water will fill the above-mentioned horizontal pipe 7. As an optimization, it also includes a leakage alarm 9, which can accurately monitor the leakage and give an alarm, so as to remind the staff to drain the leakage fault in time. The above-mentioned leakage alarm 9 is preferably fixed at the connection of the above-mentioned horizontal pipe 7 connecting the vertical pipe 6 or the inverted U-shaped pipe 8. The above-mentioned leakage alarm 9 can be a capacitive leakage alarm or an optoelectronic leakage alarm. The capacitive leakage alarm needs to be used in cooperation with a non-metallic pipe.

[0031] Furthermore, as Figure 1 shown, it also includes a bypass pipe 10. One end of the above-mentioned bypass pipe 10 is communicated with the bottom wall of the above-mentioned horizontal pipe 7 and the other end is bypassed with the drainage end of the above-mentioned inverted U-shaped pipe 8. An air release valve 11 is provided on the above-mentioned bypass pipe 10. The above-mentioned bypass pipe 10 is closed and cannot pass water when it is idle. When the system leaks and alarms, after the staff eliminates the leakage hazard, the stored water in the above-mentioned horizontal pipe 7 can be completely drained by opening the above-mentioned air release valve 11.

[0032] In this embodiment, as Figure 1As shown, it further includes a test tube 12. One end of the test tube 12 is bypassed with the vertical tube 6 and the other end is connected to an external water source. A test valve 13 is provided on the test tube 12. The water leakage alarm 9 needs to be regularly detected for normal operation. The test tube 12 can inject a small amount of water into the drain pipe 1 when the main valve 5 does not leak, so as to trigger the water leakage alarm 9 in the horizontal tube 7. If the water leakage alarm 9 fails to be triggered, a new water leakage alarm 9 should be replaced in time. After the test is completed, the water in the horizontal tube 7 can be drained through the bypass pipe 10.

[0033] In this embodiment, the main valve 5, the drain valve 11, and the test valve 13 are electric valves or manual valves, which can be manually operated to open or close, or remotely controlled by electric control or signals.

[0034] According to a preferred embodiment, as Figure 2 shown, the micro leakage valve 2 includes a valve body, a valve plate 16 and a central shaft 21. Specifically, the valve plate 16 is coaxially fixed on the central shaft 21. The valve body is provided with a water inlet 17 and a water outlet 18. The water inlet 17 and the water outlet 18 are arranged one above the other and are respectively connected to the vertical tube 6 and the horizontal tube 7. An upper support plate 19 is provided in the valve body near the water inlet 17, and a lower support plate 20 is provided in the valve body near the water outlet 18. The upper support plate 19 and the lower support plate 20 are parallel and aligned one above the other. The upper support plate 19 and the lower support plate 20 are provided with central holes. Both ends of the central shaft 21 pass through the central holes of the upper support plate 19 and the lower support plate 20 respectively and can move up and down synchronously with the valve plate 16. A spring 22 is sleeved on the central shaft 21. A circular gap is formed between the valve plate 16 and the inner wall of the valve body under the elastic force of the spring 22. When the main valve 5 does not leak or leaks a small amount of water, the lower valve plate 16 remains at a high position under the elastic force of the spring, so there is a circular gap between it and the valve body. When the main valve 5 leaks a small amount of water and the leakage water volume is small, it can pass through the circular gap and flow out of the micro leakage valve 2 through the water outlet 18 and enter the horizontal tube 7. When the main valve 5 is normally opened to supply a large amount of water to the dry tube 4, the valve plate 16 is forced by the water pressure of the large flow of water to overcome the elastic force of the spring 22 and move down together with the central shaft 21 to close the water outlet 18, so that the water flow cannot pass through the micro leakage valve 2, so that the water supply can flow completely to the downstream dry tube 4.

[0035] In this embodiment, as Figure 3As shown in the figure, the above-mentioned valve body includes an upper valve body 14 and a lower valve body 15. The upper valve body 14 and the lower valve body 15 are connected into one body through internal and external threads. The split structure facilitates processing, disassembly and assembly. Among them, the water inlet 17 is arranged at the top of the upper valve body 14, the water outlet 18 is arranged at the bottom of the lower valve body 15. A sunk groove for cooperating with the valve plate 16 is provided at the top of the lower valve body 15. The diameter of the sunk groove is larger than that of the water outlet 18. The valve plate 16 sinks into the sunk groove to close the water outlet 18. A rubber ring with a certain elasticity can be inlaid at the sunk groove part of the lower valve body 15 to improve the sealing effect.

[0036] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A dry-wet partition safety device, characterized in that: It includes a drain pipe (1), a micro flow leakage valve (2) and a weir plate (3). The weir plate (3) is arranged on the dry pipe (4) and partially closes the lower part of the pipe hole of the dry pipe (4). The water inlet end of the dry pipe (4) is communicated with the water outlet end of the wet pipe through a main valve (5). The drain pipe (1) is communicated with the bottom wall of the dry pipe (4) and is located between the main valve (5) and the weir plate (3). The micro flow leakage valve (2) is arranged on the drain pipe (1).

2. The wet-dry partition safety device according to claim 1, characterized in that: The drain pipe (1) includes a vertical pipe (6), a horizontal pipe (7) and an inverted U-shaped pipe (8). The top end of the vertical pipe (6) is communicated with the dry pipe (4). One end of the horizontal pipe (7) is communicated with the bottom end of the vertical pipe (6) through the micro flow leakage valve (2) and the other end is communicated with the inverted U-shaped pipe (8). The height position of the U-shaped section of the inverted U-shaped pipe (8) is higher than that of the horizontal pipe (7).

3. The wet-dry partition safety device according to claim 2, characterized in that: It also includes a water leakage alarm (9), and the water leakage alarm (9) is fixed in the pipe hole of the horizontal pipe (7).

4. The wet-dry partition safety device according to claim 2, wherein: It also includes a bypass pipe (10). One end of the bypass pipe (10) is communicated with the bottom wall of the horizontal pipe (7) and the other end is bypassed with the drainage end of the inverted U-shaped pipe (8). A vent valve (11) is arranged on the bypass pipe (10).

5. The wet-dry partition safety device according to claim 2, wherein: It also includes a test pipe (12). One end of the test pipe (12) is communicated with the vertical pipe (6) and the other end is connected to an external water source. A test valve (13) is arranged on the test pipe (12).

6. A dry-wet partition safety device according to any one of claims 2-5, characterized in that: The micro flow leakage valve (2) includes a valve body, a valve plate (16) and a central shaft (21). The valve plate (16) is coaxially fixed on the central shaft (21). The valve body is provided with a water inlet (17) and a water outlet (18). A upper support plate (19) is arranged in the valve body near the water inlet (17), and a lower support plate (20) is arranged in the valve body near the water outlet (18). Both ends of the central shaft (21) respectively pass through the central holes of the upper support plate (19) and the lower support plate (20) and can move up and down synchronously with the valve plate (16). A spring (22) is sleeved on the lower part of the central shaft (21). A gap is formed between the valve plate (16) and the inner wall of the valve body under the elastic force of the spring (22). When a small amount of leakage occurs in the main valve (5), water flows through the gap and flows into the drain pipe (1) through the water outlet (18). When the main valve (5) is normally opened to supply a large amount of water to the dry pipe (4), the valve plate (16) is forced by the water pressure to overcome the elastic force of the spring (22) and moves down together with the central shaft (21) to close the water outlet (18).

7. The wet-dry partition safety device according to claim 6, wherein: The valve body includes an upper valve body (14) and a lower valve body (15), and the upper valve body (14) and the lower valve body (15) are connected into one body through internal and external threads.

8. The wet-dry partition safety device according to claim 7, characterized in that: The main valve (5), the vent valve (11) and the test valve (13) are electric valves or manual valves.

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