Pipeline decompression pore plate for fire fighting

Abstract

The utility model relates to the related field of pressure-reducing pore plates, in particular to a fire-fighting pipeline pressure-reducing pore plate which comprises a shell, an annular groove, a boss, a first throttling plate, a second throttling plate, bolts, throttling holes, a circular groove, an adjusting plate, adjusting holes and the like. The first throttling plate, the second throttling plate and the adjusting plate are arranged, and the adjusting plate horizontally rotates in the circular groove to drive the adjusting hole to rotate, so that the adjusting hole and the throttling hole are staggered or overlapped, the flow of water penetrating through the throttling hole and the adjusting hole is adjusted, and the flowing pressure of the water is adjusted; the flexibility of the pressure-reducing pore plate is improved, the pressure-reducing effect can be better adjusted, the downstream pressure of a pipeline is stabilized within a set value, and the practicability of the pressure-reducing pore plate is improved.

Description

Technical Field

[0001] The utility model relates to the relevant field of pressure reducing orifice plates, in particular to a pressure reducing orifice plate for a fire-fighting pipeline. Background Art

[0002] The pressure reducing orifice reduces the dynamic pressure of the liquid (excluding static pressure). When the flowing water passes through the pressure reducing orifice, due to the local resistance loss, a head pressure drop is generated at the pressure reducing orifice. At present, high-rise buildings have many floors, and the static water pressures on the high and low floors are different. When water is discharged, the water flow pressure of the low floors is much greater than that of the high floors. When fighting a fire, the fire hoses on the low floors often burst. The pressure reducing plate has a pressure reducing function for the dynamic pressure of the water flow. When the flowing water passes through the pressure reducing orifice, due to the local resistance loss, a pressure drop is generated at the pressure reducing hole, thereby meeting the outlet pressure and flow requirements of the fire hydrant.

[0003] When the pressure reducing orifice plate is in use, it is not convenient to adjust the aperture of the throttling hole according to different flow requirements due to the fixed size of the throttling hole, which reduces the flexibility of the pressure reducing orifice plate. In addition, it is difficult to accurately adjust the pressure reducing effect due to the fixed size of the throttling hole, and it is difficult to stabilize the downstream pressure of the pipeline within the set value, which reduces the practicality of the pressure reducing orifice plate. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a fire-fighting pipeline pressure reducing orifice plate to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fire-fighting pipeline pressure reducing orifice plate, comprising a shell, the inner wall of the shell is provided with a boss along the circumferential direction, a first throttle plate is provided on the boss, a second throttle plate that fits with the first throttle plate is provided on the top of the first throttle plate, a plurality of one-to-one corresponding throttle holes are provided on the first throttle plate and the second throttle plate, and a circular groove is provided on the top end surface of the first throttle plate and the bottom end surface of the second throttle plate, and an adjusting plate is provided in the hollow cavity enclosed by the two circular grooves;

[0006] The adjusting plate is provided with an adjusting hole corresponding to the throttle hole, and a fixing screw is fixedly installed at the edge of the bottom end surface of the adjusting plate;

[0007] The fixing screw rod moves through the inner side of the through hole formed on the first throttle plate, and a nut is threadedly mounted on the fixing screw rod;

[0008] The inner length of the through hole is greater than the outer diameter of the fixing screw;

[0009] The nut is located below the first throttle plate, and a rubber ring is arranged between the nut and the upper and lower opposite surfaces of the first throttle plate, and the rubber ring is movably sleeved on the fixed screw rod.

[0010] Preferably, a silicone sheet is adhered to each of the upper and lower end surfaces of the adjustment plate, the two silicone sheets are respectively fitted with the inner sides of the two circular grooves, and a through hole aligned with the adjustment hole is opened on the silicone sheet.

[0011] Preferably, the inner side of the through hole is arc-shaped, and the inner side of the through hole corresponds to the rotation trajectory of the fixing screw.

[0012] Preferably, the first throttle plate and the second throttle plate are both fixed on the boss by bolts.

[0013] Preferably, the fixing screw is perpendicular to the bottom end surface of the adjustment plate.

[0014] Preferably, an annular groove is provided on the outer surface of the shell along the circumferential direction, and two annular grooves are provided on the outer surface of the shell.

[0015] Preferably, the bottom end surface of the first throttle plate is provided with a plurality of scale lines, and the scale lines are connected to the inner bottom of the perforation.

[0016] Beneficial effects of the utility model:

[0017] The utility model provides a first throttle plate, a second throttle plate and an adjusting plate, and the adjusting plate is rotated horizontally in a circular groove to drive the adjusting hole to rotate, so that the adjusting hole and the throttle hole are misaligned or overlapped, thereby adjusting the size of the water flow passing through the throttle hole and in the adjusting hole, and also adjusting the size of the water flow pressure, thereby improving the flexibility of the pressure reducing orifice plate, and can better adjust the pressure reducing effect, so that the downstream pressure of the pipeline is stabilized within the set value, and improving the practicality of the pressure reducing orifice plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the bottom-up connection structure of the second throttle plate of the utility model.

[0020] Among them: shell-1, annular groove-2, boss-3, first throttle plate-4, second throttle plate-5, bolt-6, throttle hole-7, circular groove-8, adjustment plate-9, adjustment hole-10, silicone sheet-11, fixing screw-12, through hole-13, nut-14, rubber ring-15, scale line-16. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0022] like Figure 1 As shown, the utility model provides a fire-fighting pipeline pressure reducing orifice plate, comprising a shell 1;

[0023] In this embodiment, an annular groove 2 is provided on the outer surface of the shell 1 along the circumferential direction, and two annular grooves 2 are provided on the outer surface of the shell 1, so that the shell 1 can be connected to two adjacent pipes by two clamps matching the two annular grooves 2.

[0024] As shown in the figure, in this embodiment, the inner wall of the shell 1 is an integrated structure along the circumferential direction and is provided with a boss 3, a first throttle plate 4 is provided on the boss 3, a second throttle plate 5 that fits with the first throttle plate 4 is provided on the top of the first throttle plate 4, and a plurality of one-to-one corresponding throttle holes 7 are provided on the first throttle plate 4 and the second throttle plate 5, and the throttle holes 7 are used to reduce the downstream water pressure, and a circular groove 8 is provided on the top end surface of the first throttle plate 4 and the bottom end surface of the second throttle plate 5, and a circular adjustment plate 9 is movably installed in the hollow cavity formed by the two circular grooves 8, and the adjustment plate 9 can be horizontally rotated in the circular groove 8 to adjust the position of the adjustment hole 10;

[0025] The regulating plate 9 is provided with a regulating hole 10 corresponding to the throttle hole 7, which is used to further adjust the water flow passing through the throttle hole 7 and the pressure regulating hole 10, and a fixing screw 12 is welded and fixed at the edge of the bottom end surface of the regulating plate 9;

[0026] The fixing screw 12 movably passes through the inner side of the through hole 13 provided on the first throttle plate 4, and a nut 14 is threadedly installed on the fixing screw 12, and the position of the adjustment plate 9 is fixed by the nut 14 cooperating with the fixing screw 12;

[0027] The inner length of the through hole 13 is greater than the outer diameter of the fixing screw 12, so that the fixing screw 12 can move in the through hole 13, so that the fixing screw 12 can drive the adjusting plate 9 to rotate;

[0028] The nut 14 is located below the first throttle plate 4, and a rubber ring 15 is provided between the nut 14 and the upper and lower opposite surfaces of the first throttle plate 4. The rubber ring 15 is movably sleeved on the fixed screw 12 to improve the stability of the nut installation;

[0029] In this embodiment, a silicone sheet 11 is attached to the upper and lower end surfaces of the adjustment plate 9, and the two silicone sheets 11 are respectively fitted with the inner sides of the two circular grooves 8, and a through hole aligned with the adjustment hole 10 is opened on the silicone sheet 11, thereby improving the sealing of the adjustment plate 9 connected to the circular groove 8;

[0030] In this embodiment, the inner side of the through hole 13 is in an arc shape, and the inner side of the through hole 13 corresponds to the rotation trajectory of the fixing screw 12, so that the fixing screw 12 can rotate stably horizontally in the through hole 13;

[0031] In this embodiment, the first throttle plate 4 and the second throttle plate 5 are both locked and fixed on the boss 3 by bolts 6, which facilitates the installation and removal of the first throttle plate 4 and the second throttle plate 5;

[0032] The fixing screw 12 is perpendicular to the bottom end surface of the adjusting plate 9, so that the adjusting plate 9 can drive the fixing screw 12 to be stably installed, and the fixing screw 12 can quickly pass through the through hole 13;

[0033] In this embodiment, the bottom end surface of the first throttle plate 4 is provided with a plurality of scale lines 16, which are connected to the inner bottom of the through hole 13, so that the size of the overlap between the throttle hole 7 and the inner side of the regulating hole 10 can be judged by the scale lines 16;

[0034] When in use, the position of the adjustment hole 10 can be adjusted according to actual needs. The fixing screw 12 can be pulled to move in the perforation 13, and the fixing screw 12 drives the adjustment plate 9 to rotate in the circular groove 8, and the adjustment plate 9 drives the adjustment hole 10 to rotate, so that the adjustment hole 10 and the throttle hole 7 are misaligned or overlapped, so that the size of the overlapping and penetrating portion of the adjustment hole 10 and the throttle hole 7 changes, and the size of the overlapping and penetrating portion of the adjustment hole 10 and the throttle hole 7 can be more accurately calculated by the scale line 16. When the adjustment hole 10 is adjusted to the appropriate position, the nut 14 can be rotated to press and fix the rubber ring 15 on the bottom of the first throttle plate 4, and the nut 14 cooperates with the fixing screw 12 to fix the position of the adjustment plate 9;

[0035] Then place the shell 1 between the two fire-fighting pipes, and connect the shell 1 to the two fire-fighting pipes through the clamp and the annular groove 2. The fire-fighting water flows into the shell 1 in the upstream fire-fighting pipe, and the fire-fighting water with higher pressure upstream passes through the throttling hole 7 and the regulating hole 10 to reduce its pressure to the lower pressure required downstream, so as to complete the fire-fighting water transportation.

[0036] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fire-fighting pipeline pressure reducing orifice plate, comprising a shell; It is characterized in that The inner wall of the shell is provided with a boss along the circumferential direction, a first throttle plate is provided on the boss, a second throttle plate which fits with the first throttle plate is provided on the top of the first throttle plate, a plurality of throttle holes corresponding to each other are provided on the first throttle plate and the second throttle plate, and a circular groove is provided on the top end surface of the first throttle plate and the bottom end surface of the second throttle plate, and an adjusting plate is provided in the hollow cavity enclosed by the two circular grooves; The adjusting plate is provided with an adjusting hole corresponding to the throttle hole, and a fixing screw is fixedly installed at the edge of the bottom end surface of the adjusting plate; The fixing screw rod moves through the inner side of the through hole formed on the first throttle plate, and a nut is threadedly mounted on the fixing screw rod; The inner length of the through hole is greater than the outer diameter of the fixing screw; The nut is located below the first throttle plate, and a rubber ring is arranged between the nut and the upper and lower opposite surfaces of the first throttle plate, and the rubber ring is movably sleeved on the fixed screw rod.

2. A fire-fighting pipe pressure reducing orifice plate according to claim 1, characterized in that: A silicone sheet is respectively attached to the upper and lower end surfaces of the adjustment plate, the two silicone sheets are respectively fitted with the inner sides of the two circular grooves, and a through hole aligned with the adjustment hole is opened on the silicone sheet.

3. A fire-fighting pipe pressure reducing orifice plate according to claim 1, characterized in that: The inner side of the through hole is in an arc shape, and the inner side of the through hole corresponds to the rotation track of the fixing screw.

4. A fire-fighting pipe pressure reducing orifice plate according to claim 1, characterized in that: The first throttle plate and the second throttle plate are both fixed on the boss by bolts.

5. A fire-fighting pipeline pressure reducing orifice plate according to claim 1, characterized in that: The fixing screw is perpendicular to the bottom end surface of the adjusting plate.

6. A fire-fighting pipe pressure reducing orifice plate according to claim 1, characterized in that: An annular groove is formed on the outer surface of the shell along the circumferential direction, and two annular grooves are formed on the outer surface of the shell.

7. The fire-fighting pipeline pressure reducing orifice plate according to claim 1 is characterized in that: The bottom end surface of the first throttle plate is provided with a plurality of scale lines, and the scale lines are connected to the inner bottom of the perforation.

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