Fire hydrant capable of adjusting pressure

Abstract

The utility model discloses a pressure-adjustable fire hydrant which comprises a hydrant body, a plurality of outflow pipes are arranged on the outer side of the hydrant body, sealing covers are arranged at the ends of the outflow pipes, a first circulation hole and a second circulation hole are formed in the inner side of the hydrant body, an installation table is arranged in the first circulation hole, and a connecting rod is arranged on the installation table in a sliding mode. A first circulation hole is formed in the arc-shaped sliding guide face, a second circulation hole is formed in the second circulation hole, a sealing piece used for controlling the communication state of the first circulation hole and the second circulation hole is arranged in the second circulation hole, and the sealing piece is fixed to the connecting rod. The bolt body, the connecting rod, the sealing piece and the adjusting piece are arranged, and the abutting position of the connecting rod and the arc-shaped sliding guide face is changed by rotating the rotating piece; and the elastic force of the first spring on the connecting rod can control the relative position of the sealing piece in the hydrant body so as to control the circulation amount of fluid between the second circulation hole and the first circulation hole, so that the pressure of the fluid flowing out of the pipe is adjusted.

Description

Technical Field

[0001] The utility model discloses a fire hydrant with adjustable pressure, belonging to the technical field of fire fighting equipment. Background Art

[0002] With the continuous improvement of China's economic construction and the gradual improvement of fire protection awareness, the performance of fire protection facilities has gradually attracted attention. Fire hydrants are an outdoor ground fire water supply facility used to supply water to fire trucks or directly connect to water hoses and water guns for fire fighting. They are essential outdoor fire water supply facilities. In order to control the water pressure of the outlet pipe, existing fire hydrants usually add an adjustment structure in each water pipe. When there are multiple outlet pipes on the fire hydrant, it is more troublesome to adjust the pressure of each outlet pipe separately in actual operation, and the design of the adjustment structure is also relatively complicated. Utility Model Content

[0003] The purpose of the utility model is to solve the problems in the prior art and to provide a fire hydrant with adjustable pressure.

[0004] The utility model achieves the above-mentioned purpose through the following technical scheme: a fire hydrant with adjustable pressure, including a hydrant body, a plurality of outflow pipes are arranged on the outer side of the hydrant body, a sealing cover is arranged on the end of the outflow pipe, a first flow hole and a second flow hole are arranged on the inner side of the hydrant body, a mounting platform is arranged in the first flow hole, a connecting rod is slidably arranged on the mounting platform, a sealing member for controlling the connection state between the first flow hole and the second flow hole is arranged in the second flow hole, the sealing member is fixed on the connecting rod, an adjusting member for controlling the relative position of the sealing member is arranged on the hydrant body, and an auxiliary guide member is also arranged on the mounting platform.

[0005] Preferably, the adjusting member includes a rotating member and a first spring, a top cover is provided on the top of the bolt body, the rotating member is a cam structure, and its center is eccentrically arranged with the axis of the connecting rod, one end of the rotating member passes through the top cover and is provided with a hexagonal knob portion, the lower end of the rotating member has an arc-shaped guide sliding surface, a limiting protrusion is provided between the two ends of the arc-shaped guide sliding surface, and the two ends of the arc-shaped guide sliding surface have different heights, the connecting rod is a stepped shaft structure, the first spring is sleeved on the connecting rod, and exerts a force on the connecting rod against the arc-shaped guide sliding surface.

[0006] Preferably, a mounting cavity is provided at the top of the bolt body, and the position where the connecting rod contacts the arc-shaped guide sliding surface is located in the mounting cavity.

[0007] Preferably, the connecting rod comprises an insert rod, a tube body and a fixed rod, the tube body is a hollow tube structure, and its two ends are plugged with the insert rod and the fixed rod, and the end of the insert rod that contacts the arc-shaped guide sliding surface is a spherical structure.

[0008] Preferably, the auxiliary guide member includes a movable block, a second spring, an outer sleeve and an embedded rod, the outer sleeve is fixedly connected to the movable block by bolts, the lower end of the tube body is in contact with the movable block, the fixed rod penetrates the movable block and extends into the tube body, the two ends of the first spring are in contact with the movable block and the mounting platform respectively, the lower end of the embedded rod is threadedly connected to the mounting platform, and the upper end of the embedded rod extends to the inner side of the outer sleeve, the second spring is located in the outer sleeve, and the two ends are in contact with the movable block and the embedded rod respectively.

[0009] Preferably, a filtering device is arranged in the second flow hole corresponding to the bolt body, and the filtering device includes a supporting sleeve, a filter plate and a pressing sleeve. The supporting sleeve and the pressing sleeve are both annular sleeve structures, and the pressing sleeve is fixedly connected to the bolt body by bolts. The filter plate is located between the supporting sleeve and the pressing sleeve, and a convex ridge with a cross-shaped structure is arranged in the supporting sleeve, and the convex ridge contacts the surface of the filter plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] By setting a bolt body, a connecting rod, a sealing member and an adjusting member, the contact position between the connecting rod and the arc-shaped guide sliding surface is changed by rotating the rotating member, and the elastic force of the first spring on the connecting rod can control the relative position of the sealing member in the bolt body to control the flow rate of the fluid between the second flow hole and the first flow hole, so as to adjust the size of the fluid pressure of the outflow pipe. The pressure of multiple outflow pipes can be controlled by the rotation angle of the same rotating member. The operation is simple and convenient, and the overall structure is simple to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a fire hydrant with adjustable pressure according to the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of a fire hydrant with adjustable pressure according to the utility model;

[0014] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0015] Figure 4 It is a partial structural schematic diagram of the connecting rod and the rotating member in the utility model;

[0016] Figure 5 It is an exploded view of the filtering device in the utility model;

[0017] Figure numerals: 1. bolt body; 2. sealing cover; 3. top cover; 4. adjusting member; 5. outflow pipe; 6. rotating member; 7. mounting cavity; 8. insert rod; 9. connecting rod; 10. first flow hole; 11. tube body; 12. first spring; 13. sealing member; 14. second flow hole; 15. filtering device; 16. mounting platform; 17. auxiliary guide member; 18. embedded rod; 19. second spring; 20. outer sleeve; 21. movable block; 22. fixing rod; 23. limiting protrusion; 24. arc-shaped guide surface; 25. knob portion; 26. pressing sleeve; 27. filter plate; 28. convex ridge; 29. ​​supporting sleeve. DETAILED DESCRIPTION

[0018] 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.

[0019] like Figure 1-Figure 5 As shown, a fire hydrant with adjustable pressure includes a hydrant body 1, a plurality of outflow pipes 5 are arranged on the outer side of the hydrant body 1, a sealing cover 2 is arranged on the end of the outflow pipe 5, a first flow hole 10 and a second flow hole 14 are arranged on the inner side of the hydrant body 1, a mounting platform 16 is arranged in the first flow hole 10, a connecting rod 9 is slidably arranged on the mounting platform 16, a sealing member 13 for controlling the connection state between the first flow hole 10 and the second flow hole 14 is arranged in the second flow hole 14, the sealing member 13 is fixed on the connecting rod 9, an adjusting member 4 for controlling the relative position of the sealing member 13 is arranged on the hydrant body 1, and an auxiliary guide member 17 is also arranged on the mounting platform 16.

[0020] The adjusting member 4 includes a rotating member 6 and a first spring 12. A top cover 3 is provided on the top of the bolt body 1. The rotating member 6 is a convex disc structure, and its center is eccentrically arranged with the axis of the connecting rod 9. One end of the rotating member 6 passes through the top cover 3 and is provided with a hexagonal knob portion 25. The lower end of the rotating member 6 has an arc-shaped guide sliding surface 24, and a limiting protrusion 23 is provided between the two ends of the arc-shaped guide sliding surface 24. The two ends of the arc-shaped guide sliding surface 24 have different heights. The connecting rod 9 is a stepped shaft structure. The first spring 12 is sleeved on the connecting rod 9. When the knob portion 25 is turned with a wrench, the contact position between one end of the connecting rod 9 and the arcuate guide surface 24 changes. Since the surface height of the arcuate guide surface 24 changes gradually, the connecting rod 9 can drive the sealing member 13 to move synchronously under the action of the first spring 12, thereby controlling the flow rate of the fluid between the first flow hole 10 and the second flow hole 14, so as to indirectly adjust the fluid pressure of the outflow pipe 5.

[0021] A mounting cavity 7 is provided at the top of the bolt body 1. The position where the connecting rod 9 contacts the arc-shaped guide sliding surface 24 is located in the mounting cavity 7. The mounting cavity 7 can prevent the fluid pressure from directly acting on the rotating member 6, thereby reducing the resistance to the rotation of the rotating member 6.

[0022] The connecting rod 9 includes an insert rod 8, a tube body 11 and a fixed rod 22. The tube body 11 is a hollow tube structure, and its two ends are plugged into the insert rod 8 and the fixed rod 22. The end of the insert rod 8 that contacts the arc-shaped guide sliding surface 24 is a spherical structure. The connecting rod 9 is designed as a split structure, which can simplify the disassembly and assembly of the adjustment member 4 and the auxiliary guide member 17. The insert rod 8 relies on the spherical structure at its end to contact the arc-shaped guide sliding surface 24. When the insert rod 8 and the arc-shaped guide sliding surface 24 slide relative to each other, the wear between the two can be reduced.

[0023] The auxiliary guide member 17 includes a movable block 21, a second spring 19, an outer sleeve 20 and an embedded rod 18. The outer sleeve 20 is fixedly connected to the movable block 21 by bolts. The lower end of the tube body 11 contacts the movable block 21. The fixed rod 22 penetrates the movable block 21 and extends into the tube body 11. The two ends of the first spring 12 contact the movable block 21 and the mounting platform 16 respectively. The lower end of the embedded rod 18 is threadedly connected to the mounting platform 16, and the upper end of the embedded rod 18 extends to the inner side of the outer sleeve 20. The second spring 19 is located in the outer sleeve 20, and the two ends contact the movable block 21 and the embedded rod 18 respectively. When the rotating member 6 is rotated, the connecting rod 9 can move up and down under the action of the arc-shaped guide sliding surface 24 and the first spring 12. When the connecting rod 9 moves downward, the tube body 11 will compress the first spring 12 and drive the movable block 21 to move downward synchronously, so that the overall length of the outer sleeve 20 and the embedded rod 18 is reduced, and the second spring 19 will also be compressed. The outer sleeve 20 and the embedded rod 18 can guide the sliding of the tube body 11 and the fixed rod 22, which can not only ensure the overall strength of the lower end of the connecting rod 9, but also smoothly drive the seal 13 to move, thereby controlling the flow rate of the fluid between the first flow hole 10 and the second flow hole 14.

[0024] A filter device 15 is arranged in the bolt body 1 corresponding to the second flow hole 14, and the filter device 15 includes a support sleeve 29, a filter plate 27 and a pressing sleeve 26. The support sleeve 29 and the pressing sleeve 26 are both annular sleeve structures. The pressing sleeve 26 is fixedly connected to the bolt body 1 by bolts. The filter plate 27 is located between the support sleeve 29 and the pressing sleeve 26. A cross-shaped convex ridge 28 is arranged in the support sleeve 29. The convex ridge 28 is in contact with the surface of the filter plate 27. The filter plate 27 can be used to filter the fluid entering the second flow hole 14. When the filter plate 27 is subjected to a large pressure, the convex ridge 28 can provide support for the filter plate 27, so that the filter plate 27 will not be deformed or damaged.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fire hydrant with adjustable pressure, comprising a hydrant body (1), characterized in that: A plurality of outflow pipes (5) are arranged on the outside of the plug body (1), and a sealing cover (2) is arranged at the end of each outflow pipe (5). A first flow hole (10) and a second flow hole (14) are arranged on the inside of the plug body (1). A mounting platform (16) is arranged inside the first flow hole (10), and a connecting rod (9) is slidably arranged on the mounting platform (16). A sealing member (13) for controlling the connection state between the first flow hole (10) and the second flow hole (14) is arranged inside the second flow hole (14), and the sealing member (13) is fixed on the connecting rod (9). An adjusting member (4) for controlling the relative position of the sealing member (13) is arranged on the plug body (1), and an auxiliary guide member (17) is also arranged on the mounting platform (16).

2. The pressure-adjustable fire hydrant according to claim 1, characterized in that: The adjusting member (4) comprises a rotating member (6) and a first spring (12); a top cover (3) is arranged on the top of the bolt body (1); the rotating member (6) is a convex disc structure, and its center is eccentrically arranged with respect to the axis of the connecting rod (9); one end of the rotating member (6) passes through the top cover (3) and is provided with a hexagonal knob portion (25); the lower end of the rotating member (6) has an arc-shaped guide sliding surface (24); a limiting protrusion (23) is provided between the two ends of the arc-shaped guide sliding surface (24), and the two ends of the arc-shaped guide sliding surface (24) have different heights; the connecting rod (9) is a stepped shaft structure; the first spring (12) is sleeved on the connecting rod (9) and exerts a force on the connecting rod (9) to resist the arc-shaped guide sliding surface (24).

3. The pressure-adjustable fire hydrant according to claim 2, characterized in that: The top of the plug body (1) is provided with a mounting cavity (7), and the position where the connecting rod (9) conflicts with the arc-shaped guide slide surface (24) is located in the mounting cavity (7).

4. The pressure-adjustable fire hydrant according to claim 3, characterized in that: The connecting rod (9) comprises an insert rod (8), a tube body (11) and a fixed rod (22); the tube body (11) is a hollow tube structure, and its two ends are plugged into the insert rod (8) and the fixed rod (22); the end of the insert rod (8) that contacts the arc-shaped guide sliding surface (24) is a spherical structure.

5. The pressure-adjustable fire hydrant according to claim 4, characterized in that: The auxiliary guide member (17) comprises a movable block (21), a second spring (19), an outer sleeve (20) and an embedded rod (18); the outer sleeve (20) is fixedly connected to the movable block (21) by bolts; the lower end of the tube body (11) contacts the movable block (21); the fixed rod (22) penetrates the movable block (21) and extends into the tube body (11); the two ends of the first spring (12) contact the movable block (21) and the mounting platform (16) respectively; the lower end of the embedded rod (18) is threadedly connected to the mounting platform (16), and the upper end of the embedded rod (18) extends to the inner side of the outer sleeve (20); the second spring (19) is located in the outer sleeve (20), and the two ends contact the movable block (21) and the embedded rod (18) respectively.

6. A pressure-adjustable hydrant according to claim 1, characterized in that A filter device (15) is arranged in the second flow hole (14) corresponding to the bolt body (1), and the filter device (15) comprises a support sleeve (29), a filter plate (27) and a pressing sleeve (26). The support sleeve (29) and the pressing sleeve (26) are both annular sleeve structures. The pressing sleeve (26) is fixedly connected to the bolt body (1) by bolts. The filter plate (27) is located between the support sleeve (29) and the pressing sleeve (26). A cross-shaped convex ridge (28) is arranged in the support sleeve (29), and the convex ridge (28) contacts the surface of the filter plate (27).

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