Wet alarm valve capable of preventing false alarm

Abstract

The utility model discloses a wet-type alarm valve for preventing false alarm, which comprises a wet-type alarm valve body, the bottom of the wet-type alarm valve body is communicated with a water supply pipe, the left side of the top of the water supply pipe is movably connected with a motor through a first bearing, the output end of the motor is fixedly connected with a rotating rod, and the surface of the rotating rod is sleeved with an eccentric wheel. Impurities in a water source in the water supply pipe are filtered through the filter screen, the water pressure balance small holes are prevented from being blocked by the impurities, the false alarm condition is avoided, the motor works to drive the eccentric wheel to rotate through the rotating rod, the filter screen is driven to shake left and right through the support, and impurity particles on the surface of the filter screen are vibrated off and enter the collection box through the opening to be deposited. The fire can be cleared out by regularly opening the sealing plate, and through double-layer detection of the temperature sensing detector and the smoke sensor, real occurrence of the fire is ensured, occurrence of false alarm is further avoided, water resources are saved, and use by people is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of wet alarm valves, in particular to a wet alarm valve for preventing false alarms. Background Art

[0002] A wet alarm valve is a one-way valve that only allows water to flow into the sprinkler system in one direction and alarms at a specified flow rate. Normally, the water pressure before and after the valve plate of the wet alarm valve is equal. Water passes through the water pressure balancing hole in the guide pipe to maintain the water pressure balance before and after the valve plate. When a fire occurs, the closed sprinkler sprays water. Since the water pressure balancing hole has no time to replenish water, the water pressure above the alarm valve drops. At this time, the water pressure at the bottom of the valve plate is greater than the water pressure at the top of the valve plate, so the valve plate opens to supply water to the riser and pipeline network. At the same time, water enters the delay device, pressure switch, hydraulic alarm and other facilities along the annular groove of the alarm valve, sending a fire alarm signal and starting the fire pump.

[0003] In actual practice, the existing wet alarm valve lacks a filtering mechanism, and the water source in the water supply pipe contains some impurities, which can easily lead to the blockage of the water pressure balance hole, resulting in false alarms, causing unnecessary panic, and wasting a large amount of water resources, bringing inconvenience to people's use. A wet alarm valve that prevents false alarms has been introduced specifically. Utility Model Content

[0004] The utility model aims to provide a wet alarm valve for preventing false alarms, which has the advantage of preventing false alarms and solves the problem that in actual use, the existing wet alarm valve lacks a filtering mechanism, and the water source in the water supply pipe contains some impurities, which easily leads to the blockage of the water pressure balance hole, resulting in false alarms, causing unnecessary panic, and wasting a large amount of water resources, which brings inconvenience to people's use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wet alarm valve for preventing false alarms, comprising a wet alarm valve body, the bottom of the wet alarm valve body is connected to a water supply pipe, the left side of the top of the water supply pipe is movably connected to a motor through a first bearing, the output end of the motor is fixedly connected to a rotating rod, the surface of the rotating rod is sleeved with an eccentric wheel, a bracket is provided on the left side of the eccentric wheel, a filter is fixedly connected to the left side of the bracket, vertical plates are provided on the top and bottom of the bracket, the vertical plates are fixedly connected to the inner cavity of the water supply pipe, the left side of the vertical plates is fixedly connected to a box body, and the right side of the inner cavity of the box body is fixedly connected to a spring, so that A movable plate is fixedly connected to the left side of the spring, a movable rod is fixedly connected to the left side of the movable plate, the left side of the movable rod passes through the left side of the box body and is fixedly connected to the filter, a collecting box is fixedly connected to the left side of the bottom of the water supply pipe, a collecting box is provided at the bottom of the inner cavity of the collecting box, a sealing plate is fixedly connected to the front of the collecting box by bolts, openings are provided on the left side of the bottom of the water supply pipe and the left side of the top of the collecting box, a connecting pipe is connected to the top of the wet alarm valve body, a spray pipe is connected to the top of the connecting pipe, a temperature detector is fixedly connected to the left side of the bottom of the spray pipe, and a smoke sensor is fixedly connected to the right side of the bottom of the spray pipe.

[0006] Preferably, a protective shell is provided on the surface of the motor, and the protective shell is fixedly connected to the water supply pipe.

[0007] Preferably, the top and bottom of the movable plate are both fixedly connected with a first sliding block, and the top and bottom of the inner cavity of the box body are both provided with a first sliding groove matched with the first sliding block.

[0008] Preferably, second sliding blocks are fixedly connected to both sides of the collection box, and second sliding grooves adapted to the second sliding blocks are provided at the bottoms of both sides of the inner cavity of the collection box.

[0009] Preferably, connecting flanges are sleeved on both sides of the surface of the water supply pipe, and connecting holes are opened around the left side of the connecting flange.

[0010] Preferably, a sealing gasket is sleeved on the surface of the movable rod, and the sealing gasket is fixedly connected to the box body, and the bottom of the rotating rod is movably connected to the bottom of the inner cavity of the water supply pipe through a second bearing.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model filters impurities in the water source in the water supply pipe through the filter to avoid clogging the water pressure balance hole and false alarm. The motor drives the eccentric wheel to rotate through the rotating rod, and drives the filter to shake left and right through the bracket, so that the impurity particles on the surface of the filter are shaken off and enter the collection box through the opening for deposition. The sealing plate can be opened regularly to clear it out, and double-layer detection by the temperature detector and the smoke sensor can be used to ensure that the fire actually occurs, further avoiding the occurrence of false alarms, saving water resources, and facilitating people's use.

[0013] 2. The utility model can protect the motor by providing a protective shell, can limit the movable plate by providing a first slider and a first slide groove, can facilitate the connection between pipelines by providing a connecting flange and a connecting hole, and can make the box body have good sealing performance by providing a sealing gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model;

[0016] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged cross-section of the local structure at point A in the middle.

[0017] In the figure: 1. wet alarm valve body; 2. water supply pipe; 3. motor; 4. rotating rod; 5. eccentric wheel; 6. bracket; 7. filter; 8. vertical plate; 9. box body; 10. spring; 11. movable plate; 12. movable rod; 13. collection box; 14. collection box; 15. sealing plate; 16. opening; 17. connecting pipe; 18. spray pipe; 19. temperature sensor; 20. smoke sensor; 21. connecting flange; 22. connecting hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3A wet alarm valve for preventing false alarms comprises a wet alarm valve body 1, the bottom of the wet alarm valve body 1 is connected with a water supply pipe 2, both sides of the surface of the water supply pipe 2 are sleeved with connecting flanges 21, and connecting holes 22 are opened around the left side of the connecting flange 21. By setting the connecting flange 21 and the connecting hole 22, it is convenient to connect the pipelines. A motor 3 is movably connected to the left side of the top of the water supply pipe 2 through a first bearing. A protective shell is sleeved on the surface of the motor 3, and the protective shell is fixedly connected to the water supply pipe 2. By setting the protective shell, the motor 3 can be protected. A rotating rod 4 is fixedly connected to the output end of the motor 3, and an eccentric wheel 5 is sleeved on the surface of the rotating rod 4. A bracket 6 is arranged on the left side of the eccentric wheel 5. The bracket 6 The left side of the bracket 6 is fixedly connected with a filter screen 7, the top and bottom of the bracket 6 are provided with vertical plates 8, the vertical plates 8 are fixedly connected to the inner cavity of the water supply pipe 2, the left side of the vertical plates 8 is fixedly connected with a box body 9, the right side of the inner cavity of the box body 9 is fixedly connected with a spring 10, the left side of the spring 10 is fixedly connected with a movable plate 11, the top and bottom of the movable plate 11 are fixedly connected with a first slider, the top and bottom of the inner cavity of the box body 9 are provided with a first slide groove adapted to the first slider, and the movable plate 11 can be limited by providing the first slider and the first slide groove, the left side of the movable plate 11 is fixedly connected with a movable rod 12, the left side of the movable rod 12 penetrates to the left side of the box body 9 and is fixedly connected to the filter screen 7, and the surface of the movable rod 12 is provided with a sealing gasket, which is sealed The gasket is fixedly connected to the box body 9, and the bottom of the rotating rod 4 is movably connected to the bottom of the inner cavity of the water supply pipe 2 through the second bearing. By setting the gasket, the box body 9 can have good sealing performance. The left side of the bottom of the water supply pipe 2 is fixedly connected to the collecting box 13, and the bottom of the inner cavity of the collecting box 13 is provided with a collecting box 14. The two sides of the collecting box 14 are fixedly connected with a second slider, and the bottom of the two sides of the inner cavity of the collecting box 13 are provided with a second slide groove adapted to the second slider. The front of the collecting box 13 is fixedly connected with a sealing plate 15 by bolts. The left side of the bottom of the water supply pipe 2 and the left side of the top of the collecting box 13 are provided with openings 16. The top of the wet alarm valve body 1 is connected with a connecting pipe 17, and the top of the connecting pipe 17 is connected with a spray pipe 18. A temperature detector 19 is fixedly connected to the left side of the bottom of the spray pipe 18, and a smoke sensor 20 is fixedly connected to the right side of the bottom of the spray pipe 18. Impurities in the water source in the water supply pipe 2 are filtered through the filter screen 7 to prevent them from clogging the water pressure balance holes and avoiding false alarms. The motor 3 works to drive the eccentric wheel 5 to rotate through the rotating rod 4, and drives the filter screen 7 to shake left and right through the bracket 6, so that the impurity particles on the surface of the filter screen 7 are shaken off and enter the collection box 14 through the opening 16 for deposition. The sealing plate 15 can be opened regularly to clear them out, and double-layer detection by the temperature detector 19 and the smoke sensor 20 can ensure that the fire actually occurs, further avoid the occurrence of false alarms, save water resources, and facilitate people's use.

[0020] When in use, impurities in the water source in the water supply pipe 2 are filtered through the filter 7 to prevent them from clogging the water pressure balance holes and avoiding false alarms. The motor 3 is operated to drive the eccentric wheel 5 to rotate through the rotating rod 4, and the filter 7 is driven to shake left and right through the bracket 6, so that the impurity particles on the surface of the filter 7 are shaken off and enter the collection box 14 through the opening 16 for deposition. The sealing plate 15 can be opened regularly to clear them out, and double-layer detection by the temperature detector 19 and the smoke sensor 20 can be used to ensure that a fire actually occurs, further avoiding the occurrence of false alarms, saving water resources, and facilitating people's use.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wet alarm valve for preventing false alarms, comprising a wet alarm valve body (1), characterized in that: The bottom of the wet alarm valve body (1) is connected to a water supply pipe (2), the left side of the top of the water supply pipe (2) is movably connected to a motor (3) via a first bearing, the output end of the motor (3) is fixedly connected to a rotating rod (4), the surface of the rotating rod (4) is sleeved with an eccentric wheel (5), the left side of the eccentric wheel (5) is provided with a bracket (6), the left side of the bracket (6) is fixedly connected to a filter screen (7), the top and bottom of the bracket (6) are both provided with vertical plates (8), the vertical plates (8) are fixedly connected to the inner cavity of the water supply pipe (2), the left side of the vertical plates (8) is fixedly connected to a box body (9), the right side of the inner cavity of the box body (9) is fixedly connected to a spring (10), the left side of the spring (10) is fixedly connected to a movable plate (11), the left side of the movable plate (11) is fixedly connected to A movable rod (12) is connected, the left side of the movable rod (12) penetrates the left side of the box body (9) and is fixedly connected to the filter screen (7), the left side of the bottom of the water supply pipe (2) is fixedly connected to a collection box (13), the bottom of the inner cavity of the collection box (13) is provided with a collection box (14), the front of the collection box (13) is fixedly connected to a sealing plate (15) by bolts, the left side of the bottom of the water supply pipe (2) and the left side of the top of the collection box (13) are both provided with openings (16), the top of the wet alarm valve body (1) is connected to a connecting pipe (17), the top of the connecting pipe (17) is connected to a spray pipe (18), the left side of the bottom of the spray pipe (18) is fixedly connected to a temperature detector (19), and the right side of the bottom of the spray pipe (18) is fixedly connected to a smoke sensor (20).

2. A wet alarm valve for preventing false alarms according to claim 1, characterized in that: The surface of the motor (3) is covered with a protective shell, and the protective shell is fixedly connected to the water supply pipe (2).

3. A wet alarm valve for preventing false alarms according to claim 1, characterized in that: The top and bottom of the movable plate (11) are both fixedly connected to a first sliding block, and the top and bottom of the inner cavity of the box body (9) are both provided with a first sliding groove adapted to the first sliding block.

4. A wet alarm valve for preventing false alarms according to claim 1, characterized in that: Second sliding blocks are fixedly connected to both sides of the collection box (14), and second sliding grooves adapted to the second sliding blocks are provided at the bottoms of both sides of the inner cavity of the collection box (13).

5. A wet alarm valve for preventing false alarms according to claim 1, characterized in that: Both sides of the surface of the water supply pipe (2) are sleeved with connecting flanges (21), and connecting holes (22) are opened around the left side of the connecting flange (21).

6. A wet alarm valve for preventing false alarms according to claim 1, characterized in that: The surface of the movable rod (12) is sleeved with a sealing gasket, which is fixedly connected to the box body (9), and the bottom of the rotating rod (4) is movably connected to the bottom of the inner cavity of the water supply pipe (2) via a second bearing.

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