Dry-type alarm valve

Abstract

The utility model relates to the technical field of valves, and provides a dry type alarm valve which is convenient to observe and deice and comprises a valve body and a water outlet pipeline which is arranged at the top of the valve body and communicated with the valve body, and a pneumatic pipe and a hydraulic alarm pipe which are communicated with the valve body are arranged on the side wall of the valve body. A fire-fighting water pipe communicated with the valve body is further arranged at the bottom of the valve body, a valve clack with the bottom attached to the valve body and used for sealing the valve body is arranged in the valve body, and one end of the valve clack is movably clamped with the inner wall of the valve body. The transparent pipe is arranged at the bottom of the valve body and communicated with the valve body, the transparent twisting ring is arranged on the outer wall of the transparent pipe in a sliding mode, a plurality of friction blocks attached to the outer wall of the transparent pipe are arranged on the inner wall of the transparent twisting ring, and whether condensed ice exists or not is observed through the transparent pipe and the transparent twisting ring. And after condensation is generated, the transparent twisting ring is quickly twisted, and the friction block and the outer wall of the transparent pipe are rubbed to generate heat, so that the condensed ice is hot-melted.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a dry type alarm valve. Background Art

[0002] The dry alarm valve is a control valve used in fire sprinkler systems and installed in fire protection pipelines. The outlet side of the dry alarm valve is filled with high-pressure compressed gas. When the gas pressure is lower than a certain value, the water flow is pushed open by the water pressure greater than the air pressure, and automatically flows into the sprinkler system for water transmission. The water flow passes through the dry alarm and enters the alarm pipe. After flowing inside, it contacts the hydraulic alarm, causing the hydraulic alarm to sound an alarm. The dry alarm valve is usually connected to an air supply device. In the event of a fire, the compressed gas in the dry alarm valve can be quickly discharged through the air supply device, and compressed gas can be re-input through the air supply device after the fire is over. It can automatically provide early warning while supplying water and cooperating with the hydraulic alarm, effectively reducing the damage caused by the fire.

[0003] Although the above patent can solve the corresponding technical problems, there are still certain defects: when the existing dry alarm valve is used under low temperature conditions, due to the low external temperature, the water under the valve disc is prone to form a freezing layer, and it is difficult to observe whether it is formed when the alarm valve is not started. When a fire occurs, the freezing layer will hinder the upward flow of water, which will cause the dry alarm valve to be delayed or even unable to trigger the alarm, affecting the normal use function of the dry alarm valve. Utility Model Content

[0004] The utility model aims to provide a dry alarm valve which is convenient for observation and ice removal in view of the defects and shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dry alarm valve, comprising a valve body and a water outlet pipe arranged at the top of the valve body and connected with the valve body, the side wall of the valve body is provided with an air pressure pipe and a hydraulic alarm pipe connected with the valve body, the bottom of the valve body is also provided with a fire water pipe connected with the valve body, the valve body is provided with a valve flap that fits the bottom and closes the valve body, one end of the valve flap is movably engaged with the inner wall of the valve body, the fire water pipe comprises a transparent tube arranged at the bottom of the valve body and connected with the valve body, and a transparent twisting ring slidably arranged on the outer wall of the transparent tube, the inner wall of the transparent twisting ring is provided with a plurality of friction blocks that fit with the outer wall of the transparent tube, and whether there is condensation of ice is observed through the transparent tube and the transparent twisting ring, and after condensation occurs, the transparent twisting ring is twisted quickly to make the friction block and the outer wall of the transparent tube rub to generate heat, so that the condensed ice is melted.

[0006] A further improvement is that a flange is also provided at the end of the fire water pipe.

[0007] A further improvement is that a silicone ring is sleeved on the outer wall of the valve disc.

[0008] A further improvement is that the outer wall of the transparent tube is also provided with a friction layer.

[0009] A further improvement is that: a plurality of deformation blocks are penetrated and embedded in the transparent tube, and the inner wall of the transparent twisting tube is provided with a plurality of external elastic structures whose bottoms fit and slide against the outer wall of the transparent tube.

[0010] A further improvement is that the external elastic structure includes an internal pressure groove arranged on the inner wall of the transparent twisting tube and an impact ball slidably arranged in the internal pressure groove, the bottom of the impact ball is in contact with the outer wall of the transparent tube and is slidably connected, and an elastic column is also provided between the internal pressure groove and the impact ball.

[0011] A further improvement is that a guide block is provided between the inner pressure groove and the elastic column, the inner wall of the guide block being slidably connected to the outer wall at the top of the elastic column.

[0012] A further improvement is that a cavity is provided inside the impact ball, and a freely movable rolling ball is provided inside the impact ball.

[0013] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: when the utility model is in use, if the ambient temperature is low, the transparent tube can be directly used to observe whether condensation occurs in the fire water channel. If condensation occurs, the transparent twisting ring can be quickly twisted to generate heat and vibration, so that the condensed ice is melted by heat and then loosened and falls off through vibration, thereby causing the condensed ice to detach from the inner wall of the transparent tube. After the alarm valve is opened, the water flow can quickly flush away the condensed ice, avoiding the phenomenon that the water flow cannot flow smoothly due to ice, thereby ensuring the normal use of the dry alarm valve in low temperature weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 This is a schematic diagram of the structure of the front cross section of the alarm valve of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the fire-fighting water pipe of the utility model in a top view of a cross section;

[0017] Figure 3 It is a structural schematic diagram of a front view cross section of the external elastic structure of the utility model. DETAILED DESCRIPTION

[0018] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0019] See also Figure 1-3 As shown, the technical solution adopted in this specific embodiment is: a dry alarm valve, including a valve body 1 and a water outlet pipe 2 arranged at the top of the valve body 1 and connected to the valve body 1, the side wall of the valve body 1 is provided with an air pressure pipe 3 and a hydraulic alarm pipe 4 connected to the valve body 1, the bottom of the valve body 1 is also provided with a fire water pipe 5 connected to the valve body 1, the valve body 1 is provided with a valve flap 6 that fits the bottom and closes the valve body 1, one end of the valve flap 6 is movably engaged with the inner wall of the valve body 1, and the fire water pipe 5 includes a transparent valve arranged at the bottom of the valve body 1 and connected to the valve body 1. The transparent tube 51 and the transparent twisting ring 52 are slidably arranged on the outer wall of the transparent tube 51. The inner wall of the transparent twisting ring 52 is provided with a plurality of friction blocks 56 that fit with the outer wall of the transparent tube 51. Whether there is condensation of ice can be observed through the transparent tube 51 and the transparent twisting ring 52. After condensation occurs, the transparent twisting ring 52 is twisted quickly to make the friction blocks 56 and the outer wall of the transparent tube 51 rub against each other to generate heat, so that the condensation of ice is melted. When in use, the fire hose 5 is connected to the external fire pipe, and the water in the fire pipe enters the fire hose 5. At the same time, the air pressure pipe 3 is connected to the pressure pipe. The compressed gas is compressed on the gas machine to allow the compressed gas to enter the inner cavity of the valve body 1, and then the valve plate 6 is squeezed and fitted to the inner wall of the valve body 1 by the air pressure to close the valve body 1. At the same time, the hydraulic alarm pipe 4 is connected to the hydraulic alarm bell. When a fire occurs, the compressed gas is quickly pumped away through the air pressure pipe 3, so that the air pressure in the valve body 1 disappears, thereby causing the water flow to push open the valve disc 6, and output water from the water outlet pipe 2 to extinguish the fire. At the same time, part of the water flow enters the hydraulic alarm pipe 4 and contacts the hydraulic alarm bell, and then the hydraulic alarm bell is used to warn. When in use, it is carried out through the transparent tube 51 Observe whether the water flow inside it is condensed. If a condensed ice layer is generated, the transparent twisting ring 52 can be twisted quickly to make the transparent twisting ring 52 drive the friction block 56 to fit and slide against the outer wall of the transparent tube 51, thereby generating heat through friction and transferring the heat to the transparent tube 51, so that the condensed ice is heated and melted, thereby loosening and easily falling off. Therefore, after the alarm valve is opened, the condensed ice layer can be quickly dispersed by the impact of water flow, avoiding the phenomenon that the water flow cannot flow smoothly due to ice, and ensuring the normal use of the dry alarm valve in low temperature weather;

[0020] The end of the fire hose 5 is also provided with a flange 9, which is conducive to making the installation and connection more convenient and quick;

[0021] The outer wall of the valve flap 6 is sleeved with a silicone ring 8, which is beneficial to enhance the sealing effect when the valve flap 6 is attached to the inner wall of the valve body 1;

[0022] The outer wall of the transparent tube 51 is also provided with a friction layer 55, which is helpful to enhance the friction force of the friction block 56 during friction, thereby generating more heat;

[0023] A plurality of deformation blocks 54 are penetrated and embedded in the transparent tube 51. The deformation blocks 54 can be made of elastic rubber material. Six of them are provided in this embodiment. The inner wall of the transparent twisting ring 52 is provided with a plurality of external elastic structures 53 whose bottoms are fitted and slid with the outer wall of the transparent tube 51. Six of them are provided in this embodiment. The external elastic structure 53 includes an inner pressure groove 21 arranged on the inner wall of the transparent twisting ring 52 and an impact ball 22 slidably arranged in the inner pressure groove 21. The bottom of the impact ball 22 is fitted and slidably connected with the outer wall of the transparent tube 51. An elastic column 23 is also provided between the inner pressure groove 21 and the impact ball 22. When the transparent twisting ring 52 is twisted, the external elastic structure 53 is driven to move. When the impact ball 22 of the external elastic structure 53 moves to the position of the deformation block 54, it is pushed outward by the elastic column 23 and hits the deformation block 54. Then, the deformation block 54 is impacted and deformed to bulge into the transparent tube 51, thereby hitting the ice layer, causing cracks and loosening, so that the condensed ice is easier to fall off.

[0024] A guide block 25 is provided between the inner pressure groove 21 and the elastic column 23, the inner wall of which is slidably connected to the outer wall of the top of the elastic column 23, which is conducive to making the thrust direction straighter, avoiding skewness, and ensuring the impact force;

[0025] The impact ball 22 has a cavity inside, and a freely movable rolling ball 26 is provided inside the impact ball 22, which is beneficial for generating additional vibration by the rolling ball 26 hitting the inner wall of the impact ball 22 in the inner cavity of the impact ball 22 after the impact, thereby enhancing the destructive effect on the condensed ice.

[0026] Working principle of the utility model: when the utility model is used, the fire water pipe 5 is connected to the external fire pipe, and the water in the fire pipe enters the fire water pipe 5, and the air pressure pipe 3 is connected to the compressed gas machine to allow the compressed gas to enter the inner cavity of the valve body 1, and then the valve plate 6 is squeezed and fitted to the inner wall of the valve body 1 by the air pressure to close the valve body 1, and the hydraulic alarm pipe 4 is connected to the hydraulic alarm. When a fire occurs, the compressed gas is quickly drawn away through the air pressure pipe 3, and the air pressure in the valve body 1 disappears, thereby causing the water flow to push open the valve disc 6, and output water from the water outlet pipe 2 to extinguish the fire, and at the same time part of the water flow enters the hydraulic alarm pipe 4 and Contact the hydraulic alarm, and then use the hydraulic alarm to give an alarm. When in use, observe whether the water flow inside the transparent tube 51 is condensed. If a condensed ice layer is generated, the transparent twisting ring 52 can be twisted quickly to make the transparent twisting ring 52 drive the friction block 56 to fit and slide against the outer wall of the transparent tube 51, so that friction generates heat and conducts the heat to the transparent tube 51, so that the condensed ice is heated and melted, and then it becomes loose and easy to fall off. Therefore, after the alarm valve is opened, the condensed ice layer can be quickly dispersed by the impact of water flow, avoiding the phenomenon that the water flow cannot flow smoothly due to ice, and ensuring the normal use of the dry alarm valve in low temperature weather.

[0027] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above functions of the utility model can be used as a choice. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of various components.

[0028] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A dry alarm valve, comprising a valve body (1) and a water outlet pipe (2) arranged at the top of the valve body (1) and connected to the valve body (1); a pressure pipe (3) and a hydraulic alarm pipe (4) connected to the valve body (1) are arranged on the side wall of the valve body (1); a fire water pipe (5) connected to the valve body (1) is also arranged at the bottom of the valve body (1); a valve flap (6) is arranged inside the valve body (1) and the bottom of the valve flap (6) is fitted to and closes the valve body (1); one end of the valve flap (6) is movably engaged with the inner wall of the valve body (1), and the valve body (1) is characterized in that: The fire water pipe (5) comprises a transparent tube (51) arranged at the bottom of the valve body (1) and connected to the valve body (1), and a transparent twisting ring (52) slidably arranged on the outer wall of the transparent tube (51); the inner wall of the transparent twisting ring (52) is provided with a plurality of friction blocks (56) that fit the outer wall of the transparent tube (51); the transparent tube (51) and the transparent twisting ring (52) are used to observe whether ice condensation exists; and after condensation occurs, the transparent twisting ring (52) is twisted quickly to generate heat by friction between the friction blocks (56) and the outer wall of the transparent tube (51), so that the condensed ice melts.

2. A dry alarm valve according to claim 1, characterized in that: The end of the fire-fighting water pipe (5) is also provided with a flange (9).

3. A dry alarm valve according to claim 1, characterized in that: The outer wall of the valve flap (6) is sleeved with a silicone ring (8).

4. A dry alarm valve according to claim 1, characterized in that: The outer wall of the transparent tube (51) is also provided with a friction layer (55).

5. A dry alarm valve according to claim 1, characterized in that: A plurality of deformation blocks (54) are penetrated and embedded in the transparent tube (51), and the inner wall of the transparent twisting ring (52) is provided with a plurality of external elastic structures (53) whose bottoms are fitted and slidably connected to the outer wall of the transparent tube (51).

6. A dry alarm valve according to claim 5, characterized in that: The external elastic structure (53) comprises an internal pressure groove (21) arranged on the inner wall of the transparent twisting ring (52) and an impact ball (22) slidably arranged in the internal pressure groove (21); the bottom of the impact ball (22) is in contact with and slidably connected to the outer wall of the transparent tube (51); and an elastic column (23) is further provided between the internal pressure groove (21) and the impact ball (22).

7. A dry alarm valve according to claim 6, characterized in that: A guide block (25) is provided between the inner pressure groove (21) and the elastic column (23), the inner wall of the guide block being slidably connected to the outer wall at the top of the elastic column (23).

8. A dry alarm valve according to claim 6, characterized in that: A cavity is provided inside the impact ball (22), and a freely movable rolling ball (26) is provided inside the impact ball (22).

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