Rotary decompression indoor fire hydrant

Abstract

The utility model relates to a rotary decompression indoor fire hydrant, which belongs to the technical field of fire hydrants and comprises a valve, and the top of the valve is communicated with a water outlet pipe. According to the rotary decompression indoor fire hydrant, a shifting piece can be pushed upwards, a spring is compressed, the bottom end of an inserting rod is driven to move out of the interior of an upper side limiting groove, then a handle is rotated, a first rotating rod can be driven to rotate in a fixed box, and then a rotating plate is driven to rotate on the lower surface of a fixed plate; when the rotating plate rotates on the fixed plate, the number of the first pressure reducing holes can be reduced so as to adjust the water pressure, when the number of the second pressure reducing holes is aligned with the number of the first pressure reducing holes, the water pressure is the minimum, and after the water pressure is adjusted, the shifting piece and the spring are loosened for resetting. And the reset elastic force of the spring drives the bottom end of the insertion rod to be slidably inserted into the upper side limiting groove, so that the handle is limited and fixed, and the stability of water pressure adjustment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire hydrants, in particular to a rotary pressure-reducing indoor fire hydrant. Background Art

[0002] Indoor fire hydrants are facilities that use indoor pipelines to supply water to the fire scene. They are equipment for fire-fighting water supply in factories, warehouses, high-rise buildings, public places and ships. They are usually installed in fire hydrant boxes and used in conjunction with fire hoses, water guns and other equipment. When there is a fire, quickly open the fire hydrant box, take out the hose and water gun, connect one end of the hose to the fire interface of the fire hydrant, and the other end to the water gun, then turn the fire hydrant handwheel counterclockwise to open it, and water can be sprayed to extinguish the fire.

[0003] For example, Chinese patent CN219764395U discloses a rotary decompression indoor fire hydrant, comprising a fixed box, the top of the fixed box is connected to a valve body, the top of the valve body is connected to a water outlet pipe, the inner cavity of the fixed box is provided with a limit plate, the bottom of the limit plate is connected to a delivery pipe, the bottom of the delivery pipe passes through the outside of the fixed box, the bottom between the two sides of the inner cavity of the delivery pipe is fixedly connected with a partition, both sides of the top of the partition are provided with decompression holes, the left side of the inner cavity of the delivery pipe is fixedly connected to a limit shell, the inner cavity of the limit shell is provided with a limit rod, and the top of the limit rod is fixedly connected with a tension spring. The utility model solves the problem that the existing rotary decompression indoor fire hydrant has no pressure regulation function by arranging a partition, a decompression hole, a limit shell, a limit rod, a tension spring, a mesh plate, an adjustment block, a push wheel, a screw and a push block. The rotary decompression indoor fire hydrant has the advantage of pressure regulation function and is worthy of promotion.

[0004] Although the rotary pressure reducing indoor fire hydrant in the above patent has the advantage of pressure regulating function and is worthy of promotion, the patent does not limit the screw. When draining water, the orifice plate is easily affected by the water pressure and moves upward inside the delivery pipe, which leads to instability of water pressure regulation and reduces practicality. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a rotary pressure-reducing indoor fire hydrant having the advantages of improving the stability of water pressure regulation, etc., and solves the problem that when the screw is not limited, the orifice plate is easily affected by the water pressure and moves upward inside the delivery pipe during drainage, thereby causing instability in water pressure regulation and reducing practicality.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary pressure-reducing indoor fire hydrant, comprising a valve, the top of the valve is connected to a water outlet pipe, the bottom of the valve is connected to a connecting pipe, the bottom end of the connecting pipe is connected to a rotating box, a fixed box is arranged outside the rotating box, a fixed plate is fixed inside the fixed box, a first pressure-reducing hole of not less than two is opened on the lower surface of the fixed plate, and an adjusting mechanism is arranged inside the fixed box;

[0007] The adjusting mechanism includes a first rotating rod rotatably connected to the inside of the fixed box through a sealed bearing, one end of the first rotating rod penetrates the fixed box and extends to the right side, a handle is fixed to the right end of the first rotating rod, and no less than two limiting grooves are opened on the outside of the handle, a support frame is fixed to the right side of the fixed box by bolts, a fixing cylinder is fixed to the inside of the support frame, a spring is fixed to the lower surface of the support frame and located inside the fixing cylinder, a moving block is fixed to the lower surface of the spring, an insertion rod is fixed to the lower surface of the moving block, the moving block is slidably connected to the inside of the fixing cylinder, and the bottom end of the insertion rod is slidably inserted into the inside of the upper limiting groove.

[0008] Furthermore, a fixing opening is opened on the right side of the fixing cylinder, a paddle is fixed on the right side of the moving block, and one end of the paddle is located inside the fixing opening.

[0009] Furthermore, a connecting rod is fixed inside the fixed box, a second rotating rod is rotatably connected inside the connecting rod via a bearing, and a connecting assembly is provided at the top end of the second rotating rod.

[0010] Furthermore, the connecting assembly includes a rotating plate fixed to the top end of the second rotating rod, the upper surface of the rotating plate is provided with no less than two second pressure reducing holes, a first bevel gear is fixed to the outer side of one end of the second rotating rod, a second bevel gear is meshed with the outer side of the first bevel gear, and the second bevel gear is fixed to the outer side of the first rotating rod.

[0011] Furthermore, the upper surface of the rotating plate is in contact with the lower surface of the fixed plate.

[0012] Furthermore, the movable block is matched with the gap of the fixed cylinder, and the movable block moves linearly up and down inside the fixed cylinder. The bottom end of the fixed box is connected to a conveying pipe.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The rotating decompression indoor fire hydrant can push the paddle upward, compress the spring, and drive the bottom end of the plug rod to move out of the upper limiting groove, and then rotate the handle to drive the first rotating rod to rotate inside the fixed box, and then drive the rotating plate to rotate on the lower surface of the fixed plate. When the rotating plate rotates on the fixed plate, the first decompression holes, which are not less than two, can be reduced to adjust the water pressure. When the second decompression holes, which are not less than two, are aligned with the first decompression holes, which are not less than two, the water pressure is minimum. When the water pressure is adjusted, release the paddle, and the spring is reset. The reset elastic force of the spring drives the bottom end of the plug rod to slide and be inserted into the upper limiting groove, so that the handle is limited and fixed, thereby improving the stability of adjusting the water pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a three-dimensional schematic diagram of the fixed box of the utility model;

[0017] Figure 3 This is a schematic diagram of the adjustment mechanism of the utility model;

[0018] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0019] In the figure: 1 valve, 2 water outlet pipe, 3 connecting pipe, 4 rotating box, 5 fixed box, 6 fixed plate, 7 first pressure relief hole, 8 adjusting mechanism, 801 first rotating rod, 802 handle, 803 limiting groove, 804 support frame, 805 fixed cylinder, 806 spring, 807 moving block, 808 plug rod, 809 fixing port, 810 paddle, 811 connecting rod, 812 second rotating rod, 813 rotating plate, 814 second pressure relief hole, 815 first bevel gear, 816 second bevel gear, 9 delivery pipe. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-2In this embodiment, a rotary pressure-reducing indoor fire hydrant comprises a valve 1, the top of the valve 1 is connected with a water outlet pipe 2, the bottom of the valve 1 is connected with a connecting pipe 3, the bottom end of the connecting pipe 3 is connected with a rotating box 4, a fixed box 5 is arranged on the outside of the rotating box 4, the fixed box 5 is sealingly rotatably connected to the outside of the rotating box 4, a fixed plate 6 is fixed inside the fixed box 5, and the lower surface of the fixed plate 6 is provided with a first pressure-reducing hole 7 of not less than two, and an adjusting mechanism 8 is arranged inside the fixed box 5, and the adjusting mechanism 8 improves the stability of regulating water pressure.

[0022] See also Figure 3-4 In order to improve the stability of regulating water pressure, in this embodiment, the regulating mechanism 8 includes a first rotating rod 801 rotatably connected to the inside of the fixed box 5 through a sealed bearing, one end of the first rotating rod 801 penetrates the fixed box 5 and extends to the right side, a handle 802 is fixed to the right end of the first rotating rod 801, and no less than two limiting grooves 803 are opened on the outside of the handle 802. A support frame 804 is fixed to the right side of the fixed box 5 by bolts, and a fixing cylinder 805 is fixed inside the support frame 804. Water is discharged by opening the valve 1 and the water outlet pipe 2.

[0023] In this embodiment, a spring 806 is fixed on the lower surface of the support frame 804 and located inside the fixed cylinder 805, a moving block 807 is fixed on the lower surface of the spring 806, an insertion rod 808 is fixed on the lower surface of the moving block 807, the moving block 807 is slidably connected to the inside of the fixed cylinder 805, the bottom end of the insertion rod 808 is slidably inserted into the inside of the upper side limiting groove 803, the paddle 810 can be pushed upward, the spring 806 is compressed, and the bottom end of the insertion rod 808 is driven to move out of the inside of the upper side limiting groove 803, and then the handle 802 is rotated to drive the first rotating rod 801 to rotate inside the fixed box 5.

[0024] In this embodiment, a fixing port 809 is provided on the right side of the fixing cylinder 805, a paddle 810 is fixed on the right side of the moving block 807, one end of the paddle 810 is located inside the fixing port 809, a connecting rod 811 is fixed inside the fixing box 5, and a second rotating rod 812 is rotatably connected to the inside of the connecting rod 811 through a bearing, and a connecting assembly is provided at the top of the second rotating rod 812, and the connecting assembly includes a rotating plate 813 fixed at the top of the second rotating rod 812, and at least two second pressure reducing holes 814 are provided on the upper surface of the rotating plate 813, and the first bevel gear 815 and the second bevel gear 816 rotate, and then the second rotating rod 812 can drive the rotating plate 813 to rotate on the lower surface of the fixed plate 6.

[0025] In this embodiment, a first bevel gear 815 is fixed to the outer side of one end of the second rotating rod 812, and a second bevel gear 816 is meshed with the outer side of the first bevel gear 815. The second bevel gear 816 is fixed to the outer side of the first rotating rod 801, and the upper surface of the rotating plate 813 is in contact with the lower surface of the fixed plate 6. The moving block 807 is matched with the gap of the fixed cylinder 805. The moving block 807 moves linearly up and down inside the fixed cylinder 805, and the bottom end of the fixed box 5 is connected to the conveying pipe 9.

[0026] It should be noted that the rotating plate 813 and the fixed plate 6 both match the gap of the fixed box 5 .

[0027] It should be noted that the number of the first pressure-reducing holes 7, which is not less than two, can be reduced in size to adjust the water pressure. The water pressure is minimum when the number of the second pressure-reducing holes 814, which is not less than two, is aligned with the number of the first pressure-reducing holes 7, which is not less than two. After the water pressure is adjusted, the paddle 810 is released and the spring 806 is reset. The reset force of the spring 806 drives the bottom end of the plug rod 808 to slide and be inserted into the upper limit groove 803, so that the handle 802 is limited and fixed. The handle 802 can be rotated through the cooperation of the rotating box 4 and the fixed box 5, thereby improving the stability of the water pressure adjustment.

[0028] The working principle of the above embodiment is:

[0029] The paddle 810 can be pushed upward, the spring 806 is compressed, and the bottom end of the plug rod 808 is driven to move out of the upper limit groove 803, and then the handle 802 is rotated to drive the first rotating rod 801 to rotate inside the fixed box 5, and then the first bevel gear 815 and the second bevel gear 816 are driven to rotate, and then the second rotating rod 812 can drive the rotating plate 813 to rotate on the lower surface of the fixed plate 6. When the rotating plate 813 rotates on the fixed plate 6, at least two The first pressure reducing hole 7 is reduced in size to adjust the water pressure. When the number of second pressure reducing holes 814, which is not less than two, is aligned with the number of first pressure reducing holes 7, which is not less than two, the water pressure is minimum. When the water pressure is adjusted, the paddle 810 is released and the spring 806 is reset. The reset elastic force of the spring 806 drives the bottom end of the plug rod 808 to slide and be inserted into the upper limiting groove 803, so that the handle 802 is limited and fixed. The handle 802 can be rotated through the cooperation of the rotating box 4 and the fixed box 5, thereby improving the stability of the water pressure adjustment.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A rotary pressure reducing indoor fire hydrant, comprising a valve (1), characterized in that: The top of the valve (1) is connected to a water outlet pipe (2), the bottom of the valve (1) is connected to a connecting pipe (3), the bottom end of the connecting pipe (3) is connected to a rotating box (4), a fixed box (5) is arranged outside the rotating box (4), a fixed plate (6) is fixed inside the fixed box (5), the lower surface of the fixed plate (6) is provided with at least two first pressure reducing holes (7), and an adjusting mechanism (8) is arranged inside the fixed box (5); The adjustment mechanism (8) comprises a first rotating rod (801) rotatably connected to the interior of the fixed box (5) via a sealed bearing, one end of the first rotating rod (801) passes through the fixed box (5) and extends to the right side, a handle (802) is fixed to the right end of the first rotating rod (801), and the outer side of the handle (802) is provided with no less than two limiting grooves (803), a support frame (804) is fixed to the right side of the fixed box (5) via bolts, a fixing cylinder (805) is fixed to the interior of the support frame (804), a spring (806) is fixed to the lower surface of the support frame (804) and located inside the fixing cylinder (805), a moving block (807) is fixed to the lower surface of the spring (806), an insertion rod (808) is fixed to the lower surface of the moving block (807), the moving block (807) is slidably connected to the interior of the fixing cylinder (805), and the bottom end of the insertion rod (808) is slidably inserted into the interior of the upper limiting groove (803).

2. A rotary pressure reducing indoor fire hydrant according to claim 1, characterized in that: A fixing opening (809) is provided on the right side of the fixing cylinder (805), and a paddle (810) is fixed on the right side of the moving block (807), with one end of the paddle (810) being located inside the fixing opening (809).

3. A rotary pressure reducing indoor fire hydrant according to claim 1, characterized in that: A connecting rod (811) is fixed inside the fixed box (5), a second rotating rod (812) is rotatably connected inside the connecting rod (811) via a bearing, and a connecting assembly is provided at the top end of the second rotating rod (812).

4. A rotary pressure reducing indoor fire hydrant according to claim 3, characterized in that: The connecting assembly comprises a rotating plate (813) fixed to the top end of a second rotating rod (812); the upper surface of the rotating plate (813) is provided with no less than two second pressure reducing holes (814); a first bevel gear (815) is fixed to the outer side of one end of the second rotating rod (812); a second bevel gear (816) is meshed with the outer side of the first bevel gear (815); and the second bevel gear (816) is fixed to the outer side of the first rotating rod (801).

5. A rotary pressure reducing indoor fire hydrant according to claim 4, characterized in that: The upper surface of the rotating plate (813) is in contact with the lower surface of the fixed plate (6).

6. The rotary pressure reducing indoor fire hydrant according to claim 1, characterized in that: The movable block (807) is matched with the gap of the fixed cylinder (805), and the movable block (807) moves linearly up and down inside the fixed cylinder (805). The bottom end of the fixed box (5) is connected to a conveying pipe (9).

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