Ground type pressure regulating hydrant

Abstract

The present application relates to the technical field of fire-fighting equipment, and particularly relates to an above-ground type pressure regulating fire hydrant, comprising: a porous filter plate fixed in the radial direction in the inner cavity of a hydrant body; a flow limiting ring fixed in the radial direction in the inner cavity of the hydrant body; a piston block movably arranged in the cavity between the porous filter plate and the flow limiting ring; an adjusting module for adjusting the width of the gap between the piston block and the flow limiting ring; a water pump and a first flow guide pipe arranged on the main body of the fire hydrant for transmitting the aqueous solution in the lower cavity of the flow limiting ring to the upper cavity of the flow limiting ring for adjusting the output water pressure. When the output water pressure needs to be adjusted, the adjusting module controls the piston block to block the flow limiting ring, and the aqueous solution in the lower cavity of the flow limiting ring is transmitted to the upper cavity of the flow limiting ring by the water pump through the first flow guide pipe, so that the user can control the water pump to adjust the output water pressure without the need to change the connection position of the fire hose, thereby significantly improving the convenience of use and solving the defects of the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire-fighting equipment, in particular to an above-ground type pressure regulating fire hydrant. BACKGROUND

[0002] The above-ground type fire hydrant is an important fixed fire-fighting facility arranged beside the road, which is mainly used to provide quick and reliable water source for fire-fighting personnel in case of fire. In the prior art, in order to realize the function of flexibly adjusting the water pressure of the fire hydrant according to the actual situation, a Chinese patent with the authorization publication number CN112012275B discloses an above-ground fire hydrant with adjustable pressure and a regulating method thereof. The above-ground fire hydrant with adjustable pressure comprises a fire hydrant body, the fire hydrant body is communicated with a first water outlet joint, a pressure regulating mechanism is arranged on the side of the fire hydrant body, the pressure regulating mechanism comprises a box body, a pressure regulating pump is fixedly arranged in the box body, the pressure regulating pump is communicated with a water inlet joint and a second water outlet joint, the water inlet joint is rotatably connected with a connecting pipe, one end of the connecting pipe away from the water inlet joint is communicated with an adjusting joint for connecting the first water outlet joint, the pressure regulating pump is connected with a power supply joint, and the second water outlet joint extends out of the box body.

[0003] In the process of using the above fire hydrant to supply water to the fire hose, when the water outlet pressure of the first water outlet joint is insufficient or too high, the connecting pipe is rotated until the adjusting joint corresponds to the first water outlet joint, and then the adjusting joint is connected with the first water outlet joint. In this process, it is inevitable to switch the fire hose from being connected with the first water outlet joint to being connected with the second water outlet joint, and there is a problem of poor convenience in use. SUMMARY

[0004] In view of the technical problem of poor convenience in use existing in the prior art, the present application provides an above-ground type pressure regulating fire hydrant, which is characterized by comprising:

[0005] A multi-hole filter plate is fixedly arranged in the inner cavity of the plug body along the radial direction of the plug body of the fire hydrant main body, and the multi-hole filter plate is matched with the radial cross-sectional shape of the inner cavity of the plug body.

[0006] A flow limiting ring is fixedly arranged in the inner cavity of the plug body along the radial direction of the plug body, the outer ring surface of the flow limiting ring is tightly attached to the circumferential inner wall of the plug body, and the flow limiting ring is located between the multi-hole filter plate and the output interface of the fire hydrant main body.

[0007] A piston block is movably arranged between the flow limiting ring and the multi-hole filter plate, and the piston block is matched with the inner cavity shape of the flow limiting ring.

[0008] An adjusting module is arranged on the fire hydrant main body, the adjusting module is connected with the piston block, and is used to adjust the width of the flow guiding gap between the piston block and the flow limiting ring.

[0009] A water pump is fixedly arranged in the inner cavity of the protective shell of the fire hydrant main body. The input end of the water pump is communicated with the cavity between the porous filter plate and the bottom port of the plug body of the fire hydrant main body, for adjusting the output water pressure of the fire hydrant main body.

[0010] A controller is fixedly arranged on the fire hydrant main body, and the controller is electrically connected with the water pump.

[0011] A first flow guide pipe is fixedly arranged on the fire hydrant main body. The input end of the first flow guide pipe is communicated with the output end of the water pump, and the output end of the first flow guide pipe is communicated with the cavity between the flow limiting ring and the plug cap of the fire hydrant main body, for transmitting the water solution.

[0012] Further, the adjusting module comprises:

[0013] An assembly hole is arranged on the piston block. The assembly hole is located at the center of the piston block and is arranged along the axial direction of the piston block.

[0014] A threaded pipe is fixedly arranged on the plug cap. The threaded pipe is located in the inner cavity of the plug cap. The top port of the threaded pipe is exposed to the top surface of the plug cap. The threaded pipe is vertically arranged along the axial direction of the plug body.

[0015] A transmission shaft is movably arranged in the inner cavity of the threaded pipe. The transmission shaft is threadedly connected with the threaded pipe. The bottom end of the transmission shaft is movably arranged in the assembly hole through the inner cavity of the flow limiting ring. The bottom end of the transmission shaft is slidably connected with the inner wall of the assembly hole.

[0016] A first limiting protrusion is fixedly arranged at the top port of the assembly hole.

[0017] A second limiting protrusion is fixedly arranged at the bottom end of the transmission shaft. The second limiting protrusion corresponds to the position of the first limiting protrusion, for axially limiting the transmission shaft.

[0018] A support assembly is arranged on the transmission shaft. The support assembly is connected with the piston block, for elastically supporting the piston block.

[0019] Further, the support assembly comprises:

[0020] A bearing block is fixedly arranged on the transmission shaft. The bearing block is located between the piston block and the plug cap.

[0021] A first spring is movably sleeved on the transmission shaft. One end of the first spring is fixedly connected with the bearing block, and the other end of the first spring is fixedly connected with the piston block, for elastically supporting the piston block.

[0022] A second spring is fixedly arranged at the bottom of the piston block. The second spring is located between the piston block and the porous filter plate, for elastically supporting the piston block.

[0023] Further, the adjusting module further comprises a cleaning module arranged in the inner cavity of the plug body, the cleaning module being connected to the piston block and used for cleaning the porous filter plate.

[0024] Further, the cleaning module comprises:

[0025] A receiving groove is arranged on the circumferential inner wall of the plug body and located between the porous filter plate and the bottom port of the plug body;

[0026] A bearing support is fixedly arranged at the bottom of the porous filter plate and fixedly connected to the inner wall of the plug body;

[0027] A transmission ring is arranged in the inner cavity of the plug body and located between the bearing support and the bottom port of the plug body, the transmission ring being the same as the central axis of the plug body;

[0028] A plurality of cleaning brushes are fixedly arranged at the top of the transmission ring and located between the transmission ring and the porous filter plate, the bristles of any cleaning brush being in abutment with the bottom surface of the porous filter plate and used for cleaning the porous filter plate;

[0029] A transmission assembly is arranged in the inner cavity of the plug body and connected to the piston block and the transmission ring and used for driving the transmission ring to rotate;

[0030] A residue discharging assembly is arranged on the plug body and used for discharging impurities filtered by the porous filter plate.

[0031] Further, the ends of the plurality of connecting rods of the bearing support extend into the inner cavity of the receiving groove and are fixedly connected to the top wall of the inner cavity of the receiving groove, the connecting rods of the bearing support being vortex-shaped bent rods.

[0032] Further, the transmission assembly comprises:

[0033] A transmission cylinder is fixedly arranged at the bottom of the piston block, the inner cavity of the transmission cylinder being matched with the inner cavity of the assembly hole, the bottom end of the transmission cylinder extending through the porous filter plate into the cavity between the porous filter plate and the bottom port of the plug body;

[0034] A plurality of through holes are arranged on the outer wall of the transmission cylinder, any through hole being in communication with the inner cavities of the transmission cylinder and the plug body;

[0035] A telescopic cylinder is movably inserted into the bottom port of the transmission cylinder, the telescopic cylinder being slidably connected to the transmission cylinder along the axial direction of the transmission cylinder, the bottom end of the telescopic cylinder being designed in a closed manner, and the top port of the telescopic cylinder being in communication with the inner cavities of the telescopic cylinder and the transmission cylinder;

[0036] A bearing piston is movably arranged in the inner cavity of the telescopic cylinder, the outer peripheral surface of the bearing piston being tightly fitted to the inner cavity side wall surface of the telescopic cylinder;

[0037] The flow limiting hole is arranged on the bearing piston, and the ports at both ends of the flow limiting hole are exposed to the top surface of the bearing piston and the bottom surface of the bearing piston respectively.

[0038] The third spring is arranged in the inner cavity of the telescopic cylinder, the bottom end of the third spring is fixedly connected with the bearing piston, and the top end of the third spring is fixedly connected with the inner wall of the transmission cylinder.

[0039] The transmission bracket is rotationally arranged at the bottom end of the telescopic cylinder, and the transmission bracket is arranged along the radial direction of the bolt body.

[0040] The plurality of ball-shaped grooves are circumferentially arranged around the central axis of the transmission bracket.

[0041] The guide groove is arranged on the circumferential inner wall of the bolt body, the central axis of the guide groove is collinear with the central axis of the bolt body, and the guide groove extends in a continuous undulating wave shape along the circumferential direction of the bolt body.

[0042] The plurality of balls are movably arranged in the inner cavities of the plurality of ball-shaped grooves, the balls are matched with the shapes of the inner cavities of the ball-shaped grooves, the balls protrude from the outer circumferential surface of the transmission bracket and are in close contact with the inner surface of the guide groove.

[0043] The plurality of short rods are fixedly arranged on the transmission ring, and any one of the short rods is slidably connected with the transmission bracket along the axial direction of the bolt body, and is used to drive the transmission ring to rotate.

[0044] Further, the plurality of valley positions on the inner cavity top wall surface of the guide groove correspond one-to-one to the plurality of valley positions on the inner cavity bottom wall surface of the guide groove, and any one of the valley positions on the inner cavity top wall surface of the guide groove is arranged in a staggered manner with the corresponding peak position on the inner cavity bottom wall surface of the guide groove.

[0045] Further, the slag discharging assembly comprises:

[0046] The assembly frame is fixedly sleeved on the axial side wall of the bolt body, and the bottom of the assembly frame is designed in an open type.

[0047] The plurality of slag discharge holes are arranged on the outer wall of the bolt body, and any one of the slag discharge holes is connected with the containing groove and the inner cavity of the assembly frame.

[0048] The liquid-filled sealing ring is fixedly arranged on the inner wall of the assembly frame, the liquid-filled sealing ring is matched with the positions of the plurality of slag discharge holes, and is used to close the plurality of slag discharge holes.

[0049] The second flow guide pipe is arranged on the liquid-filled sealing ring, and the second flow guide pipe is connected with the first flow guide pipe and the inner cavity of the liquid-filled sealing ring.

[0050] The first electric control valve is arranged on the first flow guide pipe and located between the connecting node of the second flow guide pipe and the first flow guide pipe and the output end of the first flow guide pipe, and is electrically connected with the controller and used for controlling the on-off of the output end of the first flow guide pipe.

[0051] The second electric control valve is arranged on the second flow guide pipe and electrically connected with the controller and used for controlling the on-off of the second flow guide pipe.

[0052] The flow guide shell is fixedly arranged on the outer wall of the plug body, and the assembly frame body is located in the inner cavity of the flow guide shell.

[0053] The slag discharge port is arranged at the bottom of the flow guide shell and communicates with the inner cavity of the flow guide shell.

[0054] The third electric control valve is fixedly arranged on the inner wall of the flow guide shell, and communicates the inner cavity of the liquid filling sealing ring with the inner cavity of the flow guide shell, and is electrically connected with the controller and used for discharging the aqueous solution in the liquid filling sealing ring.

[0055] Further, the device further comprises:

[0056] The pressure gauge is fixedly arranged on the plug cap of the fire hydrant body, the detection end of the pressure gauge is located in the inner cavity of the plug cap, and the pressure gauge is electrically connected with the controller and used for detecting the water pressure in the inner cavity of the plug cap.

[0057] The shut-off valve is fixedly arranged at the bottom port of the plug body and communicates the external fire fighting pipeline with the inner cavity of the plug body.

[0058] According to the ground type pressure regulating fire hydrant, the following beneficial effects are achieved:

[0059] 1、The device is provided with a water pump, a first flow guide pipe and an adjusting module, when it is necessary to adjust the output water pressure of the device, the user can control the piston block to block the inner cavity of the flow limiting ring, so as to divide the inner cavity of the plug body into upper and lower cavities, then the water pump and the first flow guide pipe transmit the aqueous solution in the lower cavity to the upper cavity, so that the aqueous solution is output through the output interface communicating with the upper cavity, so that the user can adjust the water flow pressure output through the output interface by controlling the output power of the water pump, and the output water pressure can be adjusted without changing the connection position of the fire hose during use, so that the defects in the prior art are solved, and the use convenience of the device is enhanced.

[0060] 2、The device is provided with the adjusting module, the first spring arranged above the piston block cooperates with the bearing block to provide elastic support for the piston block slidingly installed on the transmission shaft, when the water pressure of the lower cavity of the piston block increases, the piston block moves upward under the water pressure to overcome the elastic force of the first spring, thereby reducing the width of the flow guide gap between the piston block and the flow limiting ring. The design realizes the purpose of automatic adjustment of the maximum flow of the flow guide gap when the water pressure of the lower cavity of the piston block increases greatly, and effectively improves the problem that the water pressure of the input fire hose suddenly increases due to the sharp rise of the water pressure in the lower cavity of the piston block.

[0061] 3、The device is provided with the bearing support fixed at the bottom of the porous filter plate, and the cleaning brush is rotatably installed below the bearing support. When the cleaning brush rotates around the transmission shaft, the bristles cooperates with the vortex connecting rod on the bearing support to sweep the impurities attached to the bottom surface of the porous filter plate into the accommodation groove outside the bearing support, thereby achieving the purpose of cleaning the porous filter plate. At the same time, the device recycles the kinetic energy generated when the piston block floats up and down during the pressure stabilizing process through the transmission assembly, and converts it into the kinetic energy for driving the cleaning brushes to rotate around the transmission shaft, thereby realizing efficient utilization of energy.

[0062] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the subject technology claimed. BRIEF DESCRIPTION OF DRAWINGS

[0063] Figure 1 is a perspective view according to an embodiment of the present application;

[0064] Figure 2 is a schematic view of the internal structure according to an embodiment of the present application;

[0065] Figure 3 is an assembly schematic view of the adjusting module according to an embodiment of the present application (the cleaning module is hidden);

[0066] Figure 4 is an assembly schematic view of the cleaning module according to an embodiment of the present application;

[0067] Figure 5 is a parts view of the transmission support according to an embodiment of the present application;

[0068] Figure 6 is a structural schematic view of the guide groove according to an embodiment of the present application.

[0069] BRIEF DESCRIPTION OF DRAWINGS

[0070] 1 - hydrant body, 11 - protection shell, 12 - plug body, 13 - plug cap, 14 - output interface, 2 - water pump, 3 - first flow guide pipe, 4 - porous filter plate, 5 - adjustment module, 51 - flow limiting ring, 511 - flow guide slit, 52 - piston block, 53 - threaded pipe, 54 - transmission shaft, 541 - drive hand wheel, 55 - first limiting block, 56 - second limiting block, 571 - bearing stop block, 572 - first spring, 573 - second spring, 6 - cleaning module, 61 - containing groove, 62 - bearing bracket, 63 - transmission ring, 64 - cleaning brush, 651 - transmission cylinder, 652 - telescopic cylinder, 653 - bearing piston, 654 - flow limiting hole, 655 - third spring, 656 - transmission bracket, 6561 - ball-shaped groove, 658 - guide groove, 657 - short rod, 661 - assembly frame, 662 - liquid-filled sealing ring, 663 - second flow guide pipe, 664 - flow guide shell, 665 - residue discharge port. DETAILED DESCRIPTION

[0071] The preferred embodiments of the present application will be described in detail with reference to the drawings. The following description is presented to enable any person skilled in the art to make and use the present application.

[0072] The foregoing and other technical contents, features and effects of the present application will be further clarified in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, are only the directions of the drawings. Therefore, the directional terms are used to illustrate and not to limit the present application. In addition, the same reference numerals represent the same elements throughout the embodiments.

[0073] Specifically, as Figure 1 , 2As shown, a ground type pressure regulating fire hydrant, characterized in that, comprising: an adjusting module 5, a flow limiting ring 51, a piston block 52, a water pump 2, a controller (not shown in the figure), a first flow guide pipe 3 and a porous filter plate 4; the porous filter plate 4 is fixedly arranged in the inner cavity of the plug body 12 along the radial direction of the plug body 12 of the fire hydrant main body 1, and the radial cross-sectional shape of the porous filter plate 4 matches the radial cross-sectional shape of the inner cavity of the plug body 12; the flow limiting ring 51 is fixedly arranged in the inner cavity of the plug body 12 along the radial direction of the plug body 12, the outer ring surface of the flow limiting ring 51 closely abuts the circumferential inner wall of the plug body 12, and the flow limiting ring 51 is located between the porous filter plate 4 and the output interface of the fire hydrant main body 1; the piston block 52 is movably arranged between the flow limiting ring 51 and the porous filter plate 4, the piston block 52 matches the inner cavity shape of the flow limiting ring 51, the outer contour shape of the piston block 52 is a circular truncated cone, and the upper end surface area of the piston block 52 is smaller than the lower end surface area of the piston block 52; the adjusting module 5 is arranged on the fire hydrant main body 1, the adjusting module 5 is connected with the piston block 52, and is used for adjusting the width of the flow guide gap 511 between the piston block 52 and the flow limiting ring 51; the water pump 2 is fixedly arranged in the inner cavity of the protective shell 11 of the fire hydrant main body 1, the input end of the water pump 2 communicates with the cavity between the porous filter plate 4 and the bottom port of the plug body 12 of the fire hydrant main body 1, and is used for adjusting the output water pressure of the fire hydrant main body 1; in this embodiment, the water pump 2 preferably uses a water pump with filtering function, so as to filter the impurities mixed in the aqueous solution during water pumping; the controller is fixedly arranged on the fire hydrant main body 1, and the controller is electrically connected with the water pump 2; the first flow guide pipe 3 is fixedly arranged on the fire hydrant main body 1, the input end of the first flow guide pipe 3 communicates with the output end of the water pump 2, the output end of the first flow guide pipe 3 communicates with the cavity between the flow limiting ring 51 and the plug cap 13 of the fire hydrant main body 1, and is used for transmitting the aqueous solution.

[0074] Further, as Figures 1-3As shown, the adjustment module 5 includes: an assembly hole (not shown in the figure), a threaded tube 53, a drive shaft 54, a first limiting protrusion 55, a second limiting protrusion 56, and a support assembly; the assembly hole is opened on the piston block 52, located at the center of the piston block 52, and is arranged along the axial direction of the piston block 52; the threaded tube 53 is fixedly mounted on the cap 13, located in the inner cavity of the cap 13, with its top end exposed on the top surface of the cap 13, and is vertically arranged along the axial direction of the cap body 12; the drive shaft 54 ​​is movably inserted into the inner cavity of the threaded tube 53, and is threadedly connected to the threaded tube 53; a sealing mechanism (not shown in the figure) is provided at the bottom end of the threaded tube 53. The sealing mechanism is connected to the drive shaft 54 ​​and is used to seal the connection between the drive shaft 54 ​​and the threaded pipe. The bottom end of the drive shaft 54 ​​passes through the inner cavity of the flow-limiting ring 51 and is movably inserted into the assembly hole. The bottom end of the drive shaft 54 ​​is slidably connected to the inner wall of the assembly hole. The top end of the drive shaft 54 ​​is fixedly provided with a drive handwheel 541. The first limiting protrusion 55 is fixedly provided at the top port of the assembly hole. The second limiting protrusion 56 is fixedly provided at the bottom end of the drive shaft 54. The second limiting protrusion 56 corresponds to the position of the first limiting protrusion 55 and is used to axially limit the drive shaft 54. The support assembly is provided on the drive shaft 54 ​​and is connected to the piston block 52 for elastically supporting the piston block 52.

[0075] Furthermore, such as Figures 1-3 As shown, the support assembly includes: a bearing block 571, a first spring 572, and a second spring 573; the bearing block 571 is fixedly mounted on the drive shaft 54 ​​and is located between the piston block 52 and the cap 13; the first spring 572 is movably sleeved on the drive shaft 54, one end of the first spring 572 is fixedly connected to the bearing block 571, and the other end of the first spring 572 is fixedly connected to the piston block 52, for elastic support of the piston block 52; the second spring 573 is fixedly mounted on the bottom of the piston block 52 and is located between the piston block 52 and the porous filter plate, for elastic support of the piston block 52.

[0076] When this device supplies water, the aqueous solution in the fire pipeline enters the inner cavity of the hydrant 12 through the bottom port of the hydrant 12, and then passes through the filter holes of the porous filter plate 4 and the guide slit 511 between the piston block 52 and the flow limiting ring 51 in sequence, and enters the cavity between the flow limiting ring 51 and the hydrant cap 13. Finally, it flows out through the output port 14 to supply water to the fire hose connected to the output port 14.

[0077] When the water pressure of the fire pipe is unstable, and the water pressure supplied by the fire pipe into the inner cavity of the plug body 12 suddenly becomes high, in the process of the water solution passing through the flow guide slit 511 into the cavity between the flow limiting ring 51 and the plug cap 13, the piston block 52 is displaced upward by the water solution to overcome the elastic force of the first spring 572, so that the width of the flow guide slit 511 becomes smaller, and the maximum flow entering the upper cavity of the flow limiting ring 51 through the flow guide slit 511 is reduced, so as to prevent the water pressure of the water solution output through the output interface 14 from increasing greatly.

[0078] When the water pressure supplied by the fire pipe is insufficient, the user can control the transmission shaft 54 to rotate by driving the hand wheel 541, and use the transmission shaft 54 to displace the piston block 52 upward, and use the piston block 52 to block the inner cavity of the fiber ring. Then the controller controls the water pump 2 to start, and uses the water pump 2 to input the water solution in the lower cavity of the fiber ring into the cavity between the flow limiting ring 51 and the plug cap 13, so as to ensure that the water pressure of the water flow output through the output interface 14 meets the use demand, and at the same time, it is convenient for the user to adjust the water pressure of the water flow output through the output interface 14 by controlling the water pump 2.

[0079] In this embodiment, the user can control the transmission shaft 54 to rotate by driving the hand wheel 541, and then use the threaded assembly relationship between the transmission shaft 54 and the threaded pipe 53 to drive the transmission shaft 54 to displace downward, and compress the first spring 572 and the second spring 573 by the limiting stopper fixedly arranged on the transmission shaft 54 and the porous filter plate 4, so as to adjust the hardness of the first spring 572 and the second spring 573. When the water pressure supplied by the fire pipe is unstable, the user can adjust the hardness of the first spring 572 and the second spring 573 according to the maximum water pressure intensity, and then realize the adjustment of the pressure stabilizing effect of the adjusting module 5.

[0080] Further, as shown in Figures 1-4 , the device further comprises a cleaning module 6, which is arranged in the inner cavity of the plug body 12, and is connected with the piston block 52, and is used for cleaning the porous filter plate 4.

[0081] Further, as shown in Figures 1-4As shown, the cleaning module 6 comprises a containing groove 61, a bearing bracket 62, a transmission ring 63, a plurality of cleaning brushes 64, a transmission assembly and a residue discharge assembly. The containing groove 61 is formed on the inner wall of the shank 12 in the circumferential direction, and is located between the porous filter plate 4 and the bottom port of the shank 12. The bearing bracket 62 is fixedly arranged at the bottom of the porous filter plate 4, and is fixedly connected with the inner wall of the shank 12. The transmission ring 63 is arranged in the inner cavity of the shank 12, and is located between the bearing bracket 62 and the bottom port of the shank 12. The transmission ring 63 is the same as the central axis of the shank 12. The plurality of cleaning brushes 64 are fixedly arranged at the top of the transmission ring 63, and are all located between the transmission ring 63 and the porous filter plate 4. The bristles of any cleaning brush 64 abut against the bottom surface of the porous filter plate 4, and are used for cleaning the porous filter plate 4. The transmission assembly is arranged in the inner cavity of the shank 12, and is connected with the piston block 52 and the transmission ring 63, and is used for driving the transmission ring 63 to rotate. The residue discharge assembly is arranged on the shank 12, and is used for discharging the impurities filtered by the porous filter plate 4.

[0082] Further, as shown in Figures 1-4 the ends of the plurality of connecting rods (not shown in the figure) of the bearing bracket 62 extend into the inner cavity of the containing groove 61 and are fixedly connected with the top wall of the inner cavity of the containing groove 61. The connecting rods of the bearing bracket 62 are vortex-shaped bent rods.

[0083] Further, as shown in Figures 1-6As shown, the transmission assembly comprises: a transmission cylinder 651, a plurality of through holes (not shown in the figure), a telescopic cylinder 652, a bearing piston 653, a flow limiting hole 654, a third spring 655, a transmission bracket 656, a plurality of spherical grooves 6561, a guide groove 658, a plurality of balls (not shown in the figure), and a plurality of short rods 657. The transmission cylinder 651 is fixedly arranged at the bottom of the piston block 52. The second spring 573 is movably sleeved on the transmission cylinder 651. The inner cavity of the transmission cylinder 651 matches the position of the inner cavity of the assembly hole. The bottom end of the transmission cylinder 651 extends through the multi-hole filter plate 4 into the cavity between the multi-hole filter plate 4 and the bottom port of the plug body 12. The inner diameter of the transmission cylinder 651 is not less than the inner diameter of the assembly hole. A plurality of through holes are formed on the outer wall of the transmission cylinder 651. Any one of the through holes is connected between the inner cavity of the transmission cylinder 651 and the inner cavity of the plug body 12. The telescopic cylinder 652 is movably inserted into the bottom port of the transmission cylinder 651. The telescopic cylinder 652 is slidably connected with the transmission cylinder 651 along the axial direction of the transmission barrel. The bottom end of the telescopic cylinder 652 is designed in a closed manner. The top port of the telescopic cylinder 652 is connected between the inner cavities of the telescopic cylinder 652 and the transmission cylinder 651. The bearing piston 653 is movably arranged in the inner cavity of the telescopic cylinder 652. The outer peripheral surface of the bearing piston 653 is tightly attached to the inner cavity side wall surface of the telescopic cylinder 652. The flow limiting hole 654 is formed on the bearing piston 653. The ports at both ends of the flow limiting hole 654 are exposed on the top surface of the bearing piston 653 and the bottom surface of the bearing piston 653, respectively. The third spring 655 is arranged in the inner cavity of the telescopic cylinder 652. The bottom end of the third spring 655 is fixedly connected with the bearing piston 653. The top end of the third spring 655 is fixedly connected with the inner wall of the transmission cylinder 651. The transmission bracket 656 is rotatably arranged at the bottom end of the telescopic cylinder 652. The transmission bracket 656 is arranged along the radial direction of the plug body 12. A plurality of spherical grooves 6561 are formed on the outer peripheral surface of the transmission bracket 656. The plurality of spherical grooves 6561 are circumferentially and arrayed around the central axis of the transmission bracket 656. The guide groove 658 is formed on the circumferential inner wall of the plug body 12. The central axis of the guide groove 658 is collinear with the central axis of the plug body 12. The guide groove 658 extends in a continuous and undulating wave shape along the circumference of the plug body 12. A plurality of balls are movably arranged in the inner cavities of the plurality of spherical grooves 6561, respectively. The balls match the shapes of the inner cavities of the spherical grooves 6561. The balls protrude from the outer peripheral surface of the transmission bracket 656 and are attached to the inner surface of the guide groove 658. The plurality of short rods 657 are fixedly arranged on the transmission ring 63. Any one of the short rods 657 is slidably connected with the transmission bracket 656 along the axial direction of the plug body 12, for driving the transmission ring 63 to rotate.

[0084] Further, as Figure 1 , 2As shown in FIGS. 4, 6, the valley positions of the inner cavity top wall surface of the guide groove 658 correspond to the valley positions of the inner cavity bottom wall surface of the guide groove 658 one by one, and any valley position of the inner cavity top wall surface of the guide groove 658 is arranged in a staggered manner with the corresponding peak position of the inner cavity bottom wall surface of the guide groove 658, so that when the ball vertically upwardly displaces to the position of contacting the inner cavity top wall surface of the guide groove 658 from the valley position of the inner cavity bottom wall surface of the guide groove 658, the plane where the contact position of the ball and the inner cavity top wall surface of the guide groove 658 is located is an inclined surface, so that the ball can be guided to slide along the inclined surface, thereby driving the transmission bracket 656 to produce a certain angle of circumferential deflection around the transmission shaft 54, and vice versa. When the ball vertically downwardly displaces to the position of contacting the inner cavity bottom wall surface of the guide groove 658 from the valley position of the inner cavity top wall surface of the guide groove 658, the plane where the contact position of the ball and the inner cavity bottom wall surface of the guide groove 658 is located is an inclined surface, so that the ball can be guided to slide along the inclined surface, thereby driving the transmission bracket 656 to produce a certain angle of circumferential deflection around the transmission shaft 54.

[0085] In the process of floating up and down the piston block 52, the piston block 52 drives the transmission cylinder 651 to reciprocate up and down, the transmission cylinder 651 drives the telescopic cylinder 652 to reciprocate up and down through the third spring 655 and the piston block 52, and then the telescopic cylinder 652 drives the transmission bracket 656 to slide up and down along the guide of the short rod 657. In this process, the transmission bracket 656 drives the ball to slide along the guide of the guide groove 658, thereby driving the transmission bracket 656 to deflect circumferentially, and then the transmission bracket 656 drives the transmission ring 63 and the plurality of cleaning brushes 64 arranged on the top of the transmission ring 63 to rotate around the transmission shaft 54 through the short rod 657, and the cleaning brushes 64 clean the impurities intercepted by the porous filter plate 4. In the process of rotating around the transmission shaft 54, the bristles of the cleaning brushes 64 cooperate with the plurality of vortex connecting rods of the bearing bracket 62 to push the impurities adhered to the bottom surface of the porous filter plate 4 into the containing groove 61.

[0086] Further, as shown in FIGS. 4, 6, Figure 1 , 2As shown in Figure 4, the slag discharge assembly includes: an assembly frame 661, several slag discharge holes (not shown in the figure), a liquid-filled sealing ring 662, a second guide pipe 663, a first electrically controlled valve (not shown in the figure), a second electrically controlled valve (not shown in the figure), a guide shell 664, a slag discharge port 665, and a third electrically controlled valve (not shown in the figure); the assembly frame 661 is fixedly sleeved on the axial side wall of the bolt body 12, and the bottom of the assembly frame 661 adopts an open design; several slag discharge holes are opened on the outer wall of the bolt body 12, and any one of the slag discharge holes connects the receiving groove 61 and the inner cavity of the assembly frame 661; A liquid-filled sealing ring 662 is fixedly mounted on the inner wall of the assembly frame 661. The liquid-filled sealing ring 662 is matched with the positions of several slag discharge holes to seal the holes. A second guide pipe 663 is mounted on the liquid-filled sealing ring 662 and connects the first guide pipe 3 with the inner cavity of the liquid-filled sealing ring 662. A first electrically controlled valve is mounted on the first guide pipe 3, located between the connection node of the second guide pipe 663 and the first guide pipe 3 and the output end of the first guide pipe 3. The first electrically controlled valve is electrically connected to the controller and is used to control the on / off state of the output end of the first guide pipe 3. A second electrically controlled valve is mounted on the second guide pipe 663. On pipe 663, a second electrically controlled valve is electrically connected to the controller to control the opening and closing of the second guide pipe 663; the guide housing 664 is fixedly installed on the outer wall of the plug body 12, and the assembly frame 661 is located in the inner cavity of the guide housing 664; the slag discharge port 665 is opened at the bottom of the guide housing 664 and communicates with the inner cavity of the guide housing 664; the third electrically controlled valve is fixedly installed on the inner wall of the guide housing 664, and the third electrically controlled valve connects the inner cavity of the liquid-filled sealing ring 662 with the inner cavity of the guide housing 664. The third electrically controlled valve is electrically connected to the controller and is used to discharge the aqueous solution inside the liquid-filled sealing ring 662.

[0087] Furthermore, such as Figure 1 , 2 As shown, this device also includes: a pressure gauge (not shown in the figure), a shut-off valve (not shown in the figure), and a filter device (not shown in the figure); the pressure gauge is fixedly installed on the cap 13 of the fire hydrant body 1, and the detection end of the pressure gauge is located in the inner cavity of the cap 13. The pressure gauge is electrically connected to the controller and is used to detect the water pressure in the inner cavity of the cap 13; the shut-off valve is fixedly installed at the bottom port of the hydrant body 12. The shut-off valve connects to the inner cavity of the external fire pipeline hydrant body 12, and the user can connect the fire pipeline to the inner cavity of the hydrant body 12 by opening the shut-off valve.

[0088] In the embodiment, the controller can control the third electric control valve to open, so that the aqueous solution in the liquid-sealed ring 662 is discharged to the inner cavity of the flow guide shell 664, and then the aqueous solution in the cavity is discharged to the inner cavity of the assembly frame 661 through the slag discharge port 665, and then flows into the inner cavity of the flow guide shell 664 through the bottom port of the assembly frame 661, and finally the aqueous solution flowing into the flow guide shell 664 is discharged through the slag discharge port 665 opened at the bottom of the flow guide shell 664, so as to achieve the purpose of discharging the impurities in the accommodating groove 61 to the inner cavity of the plug body 12; after that, the controller can control the third electric control valve to close, and control the water pump 2 and the second electric control valve to open, so as to inject part of the aqueous solution transmitted by the first flow guide pipe 3 into the liquid-sealed ring 662 through the second flow guide pipe 663, and then realize the re-sealing of the slag discharge hole by the liquid-sealed ring 662; in the embodiment, when the water pressure of the fire-fighting pipeline is unstable, the up-and-down floating of the piston block 52 can drive the cleaning brush 64 to clean the bottom surface of the porous filter plate 4; when the water pressure of the fire-fighting pipeline is stable or insufficient, the user can inject water into the upper cavity of the piston block 52 through the water pump 2, and periodically adjust the water pressure of the upper cavity of the piston block 52 by the water pump 2 to drive the piston block 52 to periodically float up and down, so as to drive the cleaning brush 64 to clean the bottom surface of the porous filter plate 4.

[0089] In the embodiment, by opening the flow limiting hole 654 on the bearing piston 653, when the bearing piston 653 is subjected to external force, the aqueous solution mainly flows into or out of the cavity between the bearing piston 653 and the bottom wall of the telescopic cylinder 652 through the flow limiting hole 654, so as to slow down the displacement speed of the bearing piston 653 under the action of external force, and ensure that when the bearing piston 653 is subjected to external force for a short time, the bearing piston 653 will not displace greatly, so that in the process of periodic reciprocating up-and-down displacement of the transmission cylinder 651, the telescopic cylinder 652 and the transmission bracket 656 can follow the transmission cylinder 651 to periodically reciprocate up and down by the third spring 655 and the bearing piston 653, and when the displacement amount of the transmission cylinder 651 exceeds the wave amplitude of the wave-shaped guide groove 658, the transmission cylinder 651 can provide axial displacement compensation for the telescopic cylinder 652 and the transmission bracket 656 by driving the third spring 655 to elastically deform, and when the piston block 52 stops at a certain position (for example, the user stops the piston block 52 in the inner cavity of the flow limiting ring 51 by controlling the transmission shaft 54), the third spring 655 is in a deformed state. With the increase of the duration of this state, the distance of the bearing piston 653 sliding along the telescopic cylinder 652 under the action of the elastic force of the third spring 655 increases correspondingly, so that the third spring 655 gradually recovers to its original state. This mechanism effectively avoids the problem that the service life of the third spring 655 is shortened due to long-term deformation.

[0090] The above, with reference to Figures 1-6The ground type pressure regulating fire hydrant according to the embodiment of the application has the following beneficial effects:

[0091] 1、The water pump 2, the first flow guide pipe 3 and the adjusting module 5 are arranged, when the output water pressure of the device needs to be adjusted, the user can control the piston block 52 to block the inner cavity of the flow limiting ring 51, so as to divide the inner cavity of the plug body 12 into upper and lower cavities, then the water pump 2 and the first flow guide pipe 3 transmit the water solution in the lower cavity to the upper cavity, so that the water solution is output through the output interface 14 which is in communication with the upper cavity, so that the user can adjust the water flow pressure output through the output interface 14 by controlling the output power of the water pump 2, and the output water pressure can be adjusted without changing the connection position of the fire hose during use, so that the defects in the prior art are solved, and the use convenience of the device is enhanced.

[0092] 2、The first spring 572 arranged above the piston block 52 cooperates with the bearing block 571 to provide elastic support for the piston block 52 which is slidingly installed on the transmission shaft 54, when the water pressure in the lower cavity of the piston block 52 increases, the piston block 52 moves upward under the water pressure to overcome the elastic force of the first spring 572, so as to reduce the width of the flow guide gap 511 between the piston block 52 and the flow limiting ring 51. This design realizes the technical effect that the maximum flow capacity of the flow guide gap 511 is automatically reduced when the water pressure in the lower cavity of the piston block 52 increases, effectively improving the problem that the water pressure of the input fire hose suddenly increases due to the sharp increase of the water pressure in the lower cavity of the piston block 52.

[0093] 3、The bearing bracket 62 is fixedly arranged at the bottom of the porous filter plate 4, and the cleaning brush 64 is rotatably installed below the bearing bracket 62. When the cleaning brush 64 rotates around the transmission shaft 54, the bristles cooperates with the vortex-shaped connecting rod on the bearing bracket 62 to sweep the impurities attached to the bottom surface of the porous filter plate 4 into the accommodation groove 61 outside the bearing bracket 62, so as to realize the cleaning purpose of the porous filter plate 4. At the same time, the device recycles the kinetic energy generated when the piston block 52 floats up and down during the pressure stabilizing process of the adjusting module 5, and converts it into the kinetic energy for driving a plurality of cleaning brushes 64 to rotate around the transmission shaft 54, so as to realize efficient utilization of energy.

[0094] It should be noted that in the present specification, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent to such processes, methods, articles or devices. Without more limitations, the elements defined by the statement "comprising" do not exclude the presence of other identical elements in the processes, methods, articles or devices including the elements.

[0095] While the application has been described in detail by reference to preferred embodiments thereof, it is to be understood that the description is not to be construed as limiting the scope of the application. Various modifications and changes can occur to those skilled in the art, once they learn of the basic concept of the application. Therefore, the scope of the application is to be defined by the appended claims, rather than by the description of the preferred embodiments.

Claims

1. A ground-mounted pressure-regulating fire hydrant, characterized in that, Include: A porous filter plate is fixedly installed in the inner cavity of the fire hydrant body along the radial direction of the hydrant body, and the porous filter plate matches the radial cross-sectional shape of the inner cavity of the hydrant body. A flow-limiting ring is fixedly installed in the inner cavity of the hydrant body along the radial direction of the hydrant body. The outer ring surface of the flow-limiting ring is tightly fitted with the circumferential inner wall of the hydrant body. The flow-limiting ring is located between the porous filter plate and the output interface of the fire hydrant body. A piston block is movably disposed between the flow-limiting ring and the porous filter plate, and the inner cavity shape of the piston block matches that of the flow-limiting ring. An adjustment module is provided on the fire hydrant body. The adjustment module is connected to the piston block and is used to adjust the width of the guide slit between the piston block and the flow limiting ring. A water pump is fixedly installed in the inner cavity of the protective shell of the fire hydrant body, and the input end of the water pump is connected to the cavity between the porous filter plate and the bottom port of the hydrant body. The controller is fixedly installed on the fire hydrant body and is electrically connected to the water pump; The first guide pipe is fixedly installed on the fire hydrant body. The input end of the first guide pipe is connected to the output end of the water pump, and the output end of the first guide pipe is connected to the cavity between the flow limiting ring and the cap of the fire hydrant body for transmitting aqueous solution. The adjustment module includes: An assembly hole is formed on the piston block, the assembly hole is located at the center of the piston block, and the assembly hole is arranged along the axial direction of the piston block; A threaded tube is fixedly mounted on the cap, the threaded tube is located in the inner cavity of the cap, the top end of the threaded tube is exposed on the top surface of the cap, and the threaded tube is vertically arranged along the axial direction of the cap body; A drive shaft is movably inserted into the inner cavity of the threaded tube. The drive shaft is threadedly connected to the threaded tube. The bottom end of the drive shaft passes through the inner cavity of the flow-limiting ring and is movably inserted into the assembly hole. The bottom end of the drive shaft is slidably connected to the inner wall of the assembly hole. The first limiting protrusion is fixedly installed at the top port of the assembly hole; The second limiting protrusion is fixedly disposed at the bottom end of the drive shaft. The position of the second limiting protrusion corresponds to that of the first limiting protrusion, and it is used to axially limit the drive shaft. A support assembly is disposed on the drive shaft and is connected to the piston block for elastically supporting the piston block. It also includes: a cleaning module disposed in the inner cavity of the plug body, the cleaning module being connected to the piston block, and used to clean the porous filter plate; The cleaning module includes: A receiving groove is formed on the circumferential inner wall of the plug body, and the receiving groove is located between the porous filter plate and the bottom port of the plug body; A support bracket is fixedly installed at the bottom of the porous filter plate, and the support bracket is fixedly connected to the inner wall of the plug body; A transmission ring is disposed in the inner cavity of the bolt body. The transmission ring is located between the bearing bracket and the bottom port of the bolt body, and the transmission ring is on the same central axis as the bolt body. Several cleaning brushes are fixedly installed on the top of the transmission ring. The cleaning brushes are all located between the transmission ring and the porous filter plate. The bristles of any cleaning brush abut against the bottom surface of the porous filter plate for cleaning the porous filter plate. A transmission assembly is disposed in the inner cavity of the bolt body, and the transmission assembly connects the piston block and the transmission ring, and is used to drive the transmission ring to rotate. A slag discharge assembly, disposed on the plug body, is used to discharge impurities filtered by the porous filter plate.

2. The above-ground pressure-regulating fire hydrant as described in claim 1, characterized in that, The support component includes: A bearing block is fixedly mounted on the drive shaft, and the bearing block is located between the piston block and the bolt cap; A first spring is movably sleeved on the drive shaft. One end of the first spring is fixedly connected to the bearing block, and the other end of the first spring is fixedly connected to the piston block, for elastically supporting the piston block. A second spring is fixedly disposed at the bottom of the piston block. The second spring is located between the piston block and the porous filter plate and is used to elastically support the piston block.

3. The above-ground pressure-regulating fire hydrant as described in claim 1, characterized in that, The ends of several connecting rods of the bearing bracket extend into the inner cavity of the receiving groove and are fixedly connected to the top wall of the inner cavity of the receiving groove. The connecting rods of the bearing bracket are spiral bent rods.

4. The above-ground pressure-regulating fire hydrant as described in claim 1, characterized in that, The transmission assembly includes: A transmission cylinder is fixedly installed at the bottom of the piston block. The inner cavity of the transmission cylinder matches the inner cavity of the assembly hole. The bottom end of the transmission cylinder extends through the porous filter plate into the cavity between the porous filter plate and the bottom port of the plug. Several through holes are formed on the outer wall of the transmission cylinder, and any one of the through holes connects the inner cavity of the transmission cylinder with the inner cavity of the bolt body; A telescopic cylinder is movably inserted into the bottom port of the transmission cylinder. The telescopic cylinder is slidably connected to the transmission cylinder along the axial direction of the transmission cylinder. The bottom end of the telescopic cylinder adopts a closed design, and the top port of the telescopic cylinder connects the inner cavity of the telescopic cylinder and the transmission cylinder. A bearing piston is movably disposed in the inner cavity of the telescopic cylinder, and the outer peripheral surface of the bearing piston is in close contact with the inner cavity sidewall surface of the telescopic cylinder; A flow-limiting orifice is formed on the bearing piston, with the ports at both ends of the flow-limiting orifice exposed on the top surface and bottom surface of the bearing piston, respectively. A third spring is disposed in the inner cavity of the telescopic cylinder. The bottom end of the third spring is fixedly connected to the bearing piston, and the top end of the third spring is fixedly connected to the inner wall of the transmission cylinder. A transmission bracket is rotatably mounted at the bottom end of the telescopic cylinder, and the transmission bracket is arranged radially along the bolt body; Several spherical grooves are formed on the outer peripheral surface of the transmission bracket, and the several spherical grooves are arranged in a circular array around the central axis of the transmission bracket; A guide groove is formed on the circumferential inner wall of the plug body. The central axis of the guide groove is collinear with the central axis of the plug body. The guide groove extends in a continuous undulating wave shape along the circumference of the plug body. A plurality of balls are movably disposed in the inner cavities of the plurality of spherical grooves. The shape of the balls matches the inner cavity of the spherical grooves. The balls protrude from the outer peripheral surface of the transmission bracket and fit against the inner surface of the guide groove. Several short rods are fixedly mounted on the transmission ring. Any one of the short rods is slidably connected to the transmission bracket along the axial direction of the bolt body, and is used to drive the transmission ring to rotate.

5. The above-ground pressure-regulating fire hydrant as described in claim 4, characterized in that, The trough positions on the top wall surface of the inner cavity of the guide groove correspond one-to-one with the trough positions on the bottom wall surface of the inner cavity of the guide groove, and any trough position on the top wall surface of the inner cavity of the guide groove is offset from the corresponding peak position on the bottom wall surface of the inner cavity of the guide groove.

6. The above-ground pressure-regulating fire hydrant as described in claim 1, characterized in that, The slag discharge assembly includes: The assembly frame is fixedly sleeved on the axial side wall of the bolt body, and the bottom of the assembly frame adopts an open design. Several slag discharge holes are provided on the outer wall of the bolt body, and any one of the slag discharge holes is connected to the receiving groove and the inner cavity of the assembly frame. A liquid-filled sealing ring is fixedly installed on the inner wall of the assembly frame. The liquid-filled sealing ring is matched with the position of the plurality of slag discharge holes and is used to seal the plurality of slag discharge holes. A second guide tube is disposed on the liquid-filled sealing ring, and the second guide tube connects the first guide tube with the inner cavity of the liquid-filled sealing ring; A first electrically controlled valve is installed on the first guide pipe, located between the connection node of the second guide pipe and the first guide pipe and the output end of the first guide pipe. The first electrically controlled valve is electrically connected to the controller and is used to control the on / off state of the output end of the first guide pipe. A second electrically controlled valve is installed on the second guide pipe. The second electrically controlled valve is electrically connected to the controller and is used to control the opening and closing of the second guide pipe. A flow guide housing is fixedly mounted on the outer wall of the plug body, and the assembly frame is located in the inner cavity of the flow guide housing; A slag discharge port is provided at the bottom of the flow guide shell, and the slag discharge port communicates with the inner cavity of the flow guide shell; The third electrically controlled valve is fixedly installed on the inner wall of the flow guide housing. The third electrically controlled valve connects the inner cavity of the liquid-filled sealing ring with the inner cavity of the flow guide housing. The third electrically controlled valve is electrically connected to the controller and is used to discharge the aqueous solution inside the liquid-filled sealing ring.

7. The above-ground pressure-regulating fire hydrant as described in claim 1, characterized in that, Also includes: A pressure gauge is fixedly installed on the cap of the fire hydrant body. The detection end of the pressure gauge is located in the inner cavity of the cap. The pressure gauge is electrically connected to the controller and is used to detect the water pressure in the inner cavity of the cap. A shut-off valve is fixedly installed at the bottom port of the hydrant body, and the shut-off valve connects the external fire-fighting pipeline to the inner cavity of the hydrant body.

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