Alarm valve group for indoor building fire extinguishing device

Abstract

The utility model discloses an alarm valve group for an indoor building fire extinguishing device, which relates to the field of alarm valve groups and comprises an alarm valve main body, a sealing valve ring arranged in the alarm valve main body, a valve plug component matched with the sealing valve ring arranged in the alarm valve main body, and a detection component arranged between the valve plug component and the alarm valve main body. The bottom of the outer wall of the sealing plug is slidably sleeved with the sealing valve ring, a water flow channel is formed in the sealing plug, the sealing block is arranged at the bottom of the sealing plug, and the supporting spring is arranged in the water flow channel. The alarm valve body, the sealing valve ring and the valve plug assembly are used in a matched mode, when water flow of the alarm valve body flows back, the backflow water flow can extrude the sealing block to descend, so that the water flow located at the top of the sealing plug enters the bottom of the sealing plug, and the pressure of water flow above and below the sealing plug is balanced; and the pressure damage of parts on the alarm valve main body caused by water flow backflow is avoided.

Description

Technical Field

[0001] The utility model relates to the field of alarm valve groups, in particular to an alarm valve group used for indoor building fire extinguishing devices. Background Art

[0002] Normally, the water pressure before and after the wet alarm valve disc is equal. Due to the difference in the total pressure of the water before and after the disc and the dead weight of the disc, the disc is in a closed state. When a fire occurs, the closed sprinkler sprays water. Since the water pressure balancing hole does not have time to replenish water, the water pressure above the alarm valve drops. At this time, the water pressure before the disc is greater than the water pressure behind the disc, so the disc opens and supplies water to the riser and pipeline network. At the same time, water flows along the annular groove of the alarm valve into the delay device, pressure switch, hydraulic alarm and other facilities, sending out a fire alarm signal and starting the fire pump.

[0003] Since the water pressure before and after the wet alarm valve disc is equal under normal circumstances, that is, the alarm valve disc and the inner wall of the valve body are in a sealed state, when the fire water flow is cut off and water backflow occurs, the water flow above the alarm valve disc will exert pressure on the disc, and the water flow below the disc will have negative pressure suction, which will cause pressure loss of the disc, thereby reducing its service life. Utility Model Content

[0004] The purpose of the present utility model is to provide an alarm valve group for indoor building fire extinguishing devices to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an alarm valve assembly for an indoor building fire extinguishing device, comprising an alarm valve body, wherein a sealing valve ring is provided inside the alarm valve body;

[0006] A valve plug assembly matching the sealing valve ring is provided inside the alarm valve body, and a detection assembly is provided between the valve plug assembly and the alarm valve body. The valve plug assembly includes:

[0007] A sealing plug, wherein the bottom of the outer wall of the sealing plug is slidably sleeved with the sealing valve ring, and a water flow channel is opened on the sealing plug;

[0008] A sealing block and a support spring, wherein the sealing block is arranged at the bottom of the sealing plug, the support spring is arranged inside the water flow channel, and the sealing plug is used to seal the water flow channel through the support spring.

[0009] Preferably, the water flow channel includes:

[0010] A mounting groove, the mounting groove being opened on the top of the sealing plug;

[0011] A groove is formed at the bottom of the sealing plug, and the sealing block is located inside the groove;

[0012] A water outlet hole is provided in the interior of the sealing plug, and the inner cavity of the mounting groove is communicated with the inner cavity of the groove through the water outlet hole.

[0013] Preferably, a sealing gasket is fixedly connected to the top of the sealing block, the top of the sealing gasket fits with the top of the inner wall of the groove, and a fixing rod is fixedly connected to the top of the sealing block, and the outer wall of the fixing rod is slidably inserted and sleeved with the sealing plug.

[0014] Preferably, a fixing block is provided on the top of the fixing rod, the support spring is slidably sleeved on the outside of the fixing rod, and the support spring is located at the bottom of the fixing block.

[0015] Preferably, a fixing bolt is provided on the top of the fixing block, and the fixing block is fixedly connected to the fixing rod through the fixing bolt. The fixing block is slidably sleeved inside the mounting groove, and a slot is provided on the outer wall of the fixing block.

[0016] Preferably, the detection component includes:

[0017] a valve stem fixedly connected to the top of the sealing plug;

[0018] A pressure sensor is located at the top of the valve stem;

[0019] A guide collar, wherein the guide collar is slidably sleeved on the outside of the valve stem;

[0020] The pressure sensor and the guide collar are both installed inside the alarm valve body through the mounting rod.

[0021] The technical effects and advantages of this utility model are:

[0022] The utility model utilizes the coordinated use of an alarm valve body, a sealing valve ring and a valve plug assembly. The valve plug assembly includes a sealing plug, a sealing block, a fixing rod, a supporting spring and a fixing block. When water backflows occur in the alarm valve body, the backflowing water can squeeze the sealing block downward, so that the water at the top of the sealing plug enters the bottom of the sealing plug, thereby balancing the pressure of the water flows above and below the sealing plug, and avoiding pressure loss of components on the alarm valve body due to water backflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the internal structure of the front side of the utility model.

[0024] Figure 2 This is a schematic diagram of the overall structure of the sealing plug of the utility model.

[0025] Figure 3 This is a schematic diagram of the internal structure of the sealing plug on the front side of the present invention.

[0026] In the figure: 1. Alarm valve body; 2. Sealing valve ring; 3. Valve plug assembly; 31. Sealing plug; 32. Sealing block; 33. Mounting groove; 34. Water outlet; 35. Sealing gasket; 36. Fixing rod; 37. Support spring; 38. Fixing block; 39. Fixing bolt; 310. Slot; 4. Detection assembly; 41. Valve stem; 42. Pressure sensor; 43. Guide collar; 44. Mounting rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The utility model provides Figure 1-3 The alarm valve group for indoor building fire extinguishing device shown in the figure includes an alarm valve body 1, a sealing valve ring 2 is provided inside the alarm valve body 1, a valve plug assembly 3 matching the sealing valve ring 2 is provided inside the alarm valve body 1, a detection assembly 4 is provided between the valve plug assembly 3 and the alarm valve body 1, the valve plug assembly 3 includes a sealing plug 31, a sealing block 32 and a support spring 37, the bottom of the outer wall of the sealing plug 31 is slidably sleeved with the sealing valve ring 2, a water flow channel is opened on the sealing plug 31, the water flow channel includes a mounting groove 33, a groove and a water outlet 34, the mounting groove 33 is opened at the top of the sealing plug 31, the groove is opened at the bottom of the sealing plug 31, and the sealing block 32 is located inside the groove. When backflow occurs inside the alarm valve body 1, the water flow at the top of the sealing plug 31 will squeeze the sealing block 32 from the water flow channel. Thereby, the water flows to the bottom of the sealing plug 31, thereby balancing the upper and lower water pressures of the sealing plug 31. The water outlet 34 is opened inside the sealing plug 31, and the inner cavity of the mounting groove 33 is connected with the inner cavity of the groove through the water outlet hole 34. The sealing block 32 is arranged at the bottom of the sealing plug 31, and the support spring 37 is arranged inside the water flow channel. The sealing plug 31 is used to seal the water flow channel through the support spring 37, that is, when the water flows normally through the alarm valve body 1, that is, when the water at the bottom of the sealing plug 31 flows to the top of the sealing plug 31, the sealing block 32 can seal the groove, so that the sealing plug 31 and the sealing block 32 form a whole, and the water flowing inside the alarm valve body 1 can lift the sealing plug 31 and separate it from the sealing valve ring 2, thereby cooperating with the detection component 4 to detect the water flow inside the alarm valve body 1.

[0029] Furthermore, a sealing gasket 35 is fixedly connected to the top of the sealing block 32, and the top of the sealing gasket 35 fits against the top of the inner wall of the groove. A fixing rod 36 is fixedly connected to the top of the sealing block 32, and the outer wall of the fixing rod 36 is slidably inserted and sleeved with the sealing plug 31. The sealing gasket 35 can improve the sealing performance of the sealing block 32 to the top of the inner wall of the groove.

[0030] Furthermore, a fixing block 38 is provided at the top of the fixing rod 36, and a support spring 37 is slidably sleeved on the outside of the fixing rod 36. The support spring 37 is located at the bottom of the fixing block 38. The support spring 37 can give an elastic force to the sealing block 32 through the fixing block 38 and the fixing rod 36. When there is no water flow inside the alarm valve body 1, the sealing block 32 seals the water flow channel at the bottom of the sealing plug 31. A fixing bolt 39 is provided on the top of the fixing block 38. The fixing block 38 is fixedly connected to the fixing rod 36 through the fixing bolt 39. By removing the fixing bolt 39, the fixing rod 36, the fixing block 38 and the sealing block 32 can be disassembled to facilitate the disassembly and maintenance of the support spring 37. The fixing block 38 is slidably sleeved on the inside of the mounting groove 33. A slot 310 is provided on the outer wall of the fixing block 38. When the water flow inside the alarm valve body 1 flows back, the water flow at the top of the sealing plug 31 can enter the inside of the mounting groove 33 through the slot 310.

[0031] Specifically, the detection component 4 includes a valve stem 41, a pressure sensor 42, a guide collar 43 and a mounting rod 44. The valve stem 41 is fixedly connected to the top of the sealing plug 31, the pressure sensor 42 is located at the top of the valve stem 41, and the guide collar 43 is slidably sleeved on the outside of the valve stem 41. The pressure sensor 42 and the guide collar 43 are both installed inside the alarm valve body 1 through the mounting rod 44. The pressure sensor 42 is waterproof, and the guide collar 43 can limit the maximum height to which the sealing plug 31 rises, so as to avoid the sealing plug 31 driving the valve stem 41 to cause pressure loss on the pressure sensor 42, that is, when the water flow inside the alarm valve body 1 flows from bottom to top, the sealing plug 31 drives the valve stem 41 to rise, and the valve stem 41 squeezes the pressure sensor 42. The pressure sensor 42 sends an electrical signal, that is, it detects that water is discharged to extinguish the fire.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An alarm valve assembly for an indoor building fire extinguishing device, comprising an alarm valve body (1), wherein a sealing valve ring (2) is provided inside the alarm valve body (1); It is characterized by: A valve plug assembly (3) matching the sealing valve ring (2) is provided inside the alarm valve body (1), a detection assembly (4) is provided between the valve plug assembly (3) and the alarm valve body (1), and the valve plug assembly (3) comprises: A sealing plug (31), wherein the bottom of the outer wall of the sealing plug (31) is slidably sleeved with the sealing valve ring (2), and a water flow channel is provided on the sealing plug (31); A sealing block (32) and a support spring (37), wherein the sealing block (32) is arranged at the bottom of the sealing plug (31), the support spring (37) is arranged inside the water flow channel, and the sealing plug (31) is used to seal the water flow channel through the support spring (37).

2. The alarm valve assembly for indoor building fire extinguishing equipment according to claim 1, characterized in that: The water flow channel comprises: A mounting groove (33), wherein the mounting groove (33) is opened at the top of the sealing plug (31); A groove, the groove being opened at the bottom of the sealing plug (31), and the sealing block (32) being located inside the groove; A water outlet hole (34) is provided inside the sealing plug (31), and the inner cavity of the mounting groove (33) is communicated with the inner cavity of the groove through the water outlet hole (34).

3. The alarm valve assembly for indoor building fire extinguishing equipment according to claim 2, characterized in that: The top of the sealing block (32) is fixedly connected to a sealing gasket (35), the top of the sealing gasket (35) is in contact with the top of the inner wall of the groove, and the top of the sealing block (32) is fixedly connected to a fixing rod (36), the outer wall of the fixing rod (36) is slidably inserted and sleeved with the sealing plug (31).

4. The alarm valve assembly for indoor building fire extinguishing equipment according to claim 3, characterized in that: A fixing block (38) is provided on the top of the fixing rod (36), the support spring (37) is slidably sleeved on the outside of the fixing rod (36), and the support spring (37) is located at the bottom of the fixing block (38).

5. The alarm valve assembly for indoor building fire extinguishing equipment according to claim 4, characterized in that: A fixing bolt (39) is provided on the top of the fixing block (38), and the fixing block (38) is fixedly connected to the fixing rod (36) via the fixing bolt (39). The fixing block (38) is slidably sleeved inside the mounting groove (33), and a slot (310) is provided on the outer wall of the fixing block (38).

6. The alarm valve assembly for indoor building fire extinguishing equipment according to claim 1, characterized in that: The detection component (4) comprises: a valve stem (41), the valve stem (41) being fixedly connected to the top of the sealing plug (31); a pressure sensor (42), the pressure sensor (42) being located at the top of the valve stem (41); A guide collar (43) is slidably sleeved on the outside of the valve stem (41); The pressure sensor (42) and the guide collar (43) are both installed inside the alarm valve body (1) via the mounting rod (44).

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