Quick dismounting tool for pressure reducing orifice plate of fire hydrant

Abstract

The utility model relates to a kind of hydrant pressure reducing orifice plate quick dismounting tools, it includes first rod body, the first rod body front side top is equipped with first clamping groove, rear bottom is equipped with second clamping groove, the first rod body top is equipped with second rod body, the second rod body left side is equipped with nut hole and nut block, the first rod body right side is equipped with third rod body, the third rod body is equipped with connecting block, the connecting block periphery is equipped with several baffle, the fourth rod body is rotatably connected in the third rod body, the fourth rod body is rotatably connected with handlebar, the handlebar side towards baffle is equipped with pressure rod;The utility model can adjust handlebar position when handlebar grasp can reach ground, not affected by ground height, can appropriately lengthen the height of handlebar, long force arm, more labor-saving when using.

Description

Technical Field

[0001] This utility model relates to the technical field of fire hydrant disassembly tools, and in particular to a fire hydrant pressure relief hole.

[0002] Quick board removal tool. Background Technology

[0003] The working principle of a pressure-reducing orifice plate is to reduce the dynamic pressure of a liquid. In high-rise buildings, due to the large number of floors, the static water pressure on higher and lower floors differs. When water flows out, the water flow pressure on lower floors is much higher than that on higher floors. During firefighting, fire hoses on lower floors often burst. The pressure-reducing orifice plate reduces the dynamic pressure of the water flow. When flowing water passes through the orifice plate, a pressure drop occurs at the pressure-reducing orifice due to local resistance loss, thus meeting the outlet pressure and flow requirements of the lower-floor fire hydrants. Under the strong pressure impact of the water flow, the pressure-reducing plate needs to be maintained and replaced regularly. The structure of a fire hydrant, from the cover inwards, consists of the cover, spring seat, spring, and pressure-reducing orifice plate. Therefore, removing the pressure-reducing orifice plate requires gradual removal. However, existing fire hydrant dismantling tools have individual functions and are relatively limited in scope. Dismantling the pressure-reducing orifice plate of a single fire hydrant requires the use of multiple tools, resulting in a waste of time.

[0004] Patent No. CN218776501U discloses a quick disassembly tool for fire hydrant pressure reducing orifice plates, including a handle, a nut hole at the top of the handle, a tapered column perpendicular to the handle below the nut hole, a nut block on the tapered column, the nut block being able to engage with a blind hole in the center of the fire hydrant's spring seat, a first groove located below the tapered column, and a second groove facing away from the first groove in the middle of the handle, the first and second grooves being able to engage with the protruding side of the KN interface of the fire hydrant; this utility model is fully functional and allows for rapid disassembly.

[0005] The principle is that after the first and second grooves are engaged with the protrusion of the KN interface, the KN interface is rotated and opened by rotating the handle. However, it was found in use that when the fire hydrant is installed on the bottom surface, the KN interface is close to the ground. In order for the handle to rotate normally, the length of the handle should not be too long, that is, the lever arm is too short and not labor-saving enough.

[0006] Based on this, a quick disassembly tool for fire hydrant pressure relief orifice plates was developed that requires less effort. Summary of the Invention

[0007] This utility model provides a quick-release tool for fire hydrant pressure-reducing orifice plates that requires less effort. The problem it addresses is as follows: An existing quick-release tool for fire hydrant pressure-reducing orifice plates includes a handle with a nut hole at its top. Below the nut hole is a tapered column perpendicular to the handle, with a nut block on the tapered column. The nut block can be engaged with a blind hole in the center of the fire hydrant's spring seat. The handle has a first groove below the tapered column and a second groove in its middle section facing away from the first groove. Both the first and second grooves can engage with the protruding side of the KN connector of the fire hydrant. This utility model is fully functional and allows for rapid disassembly. Its principle is that after the first and second grooves engage with the protruding KN connector, the rotation of the handle causes the KN connector to rotate and open. However, in practice, it has been found that when the fire hydrant is installed on a bottom surface, the KN connector is relatively close to the ground. To allow the handle to rotate properly, the handle cannot be too long, resulting in a short lever arm and insufficient effort.

[0008] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a quick disassembly tool for a fire hydrant pressure reducing orifice plate, comprising a first rod body, a first slot provided at the top front side of the first rod body, a second slot provided at the bottom rear side, a second rod body provided at the top of the first rod body, a nut hole and a nut block provided on the left side of the second rod body, a third rod body provided on the right side of the first rod body, a connecting block sleeved on the third rod body, a plurality of baffles provided around the connecting block, a fourth rod body rotatably connected to the third rod body, a handle rod rotatably connected to the fourth rod body, and a pressure rod provided on the side of the handle rod facing the baffles.

[0009] Preferably, the first rod and the second rod are fixedly and detachably connected.

[0010] Preferably, the first rod body has a threaded hole at the top and the second rod body has a threaded post at the bottom that matches the threaded hole.

[0011] Preferably, the connecting block is slidably sleeved on the third rod and cannot rotate relative to it, while the fourth rod is sleeved inside the third rod and can rotate and slide relative to the third rod.

[0012] Preferably, both the third rod and the connecting block are through rectangular parallelepiped structures.

[0013] Preferably, the grip bar is covered with an anti-slip sleeve.

[0014] Preferably, one end of the grip bar is provided with a tongue-shaped plate.

[0015] Compared to existing technologies, this invention, when used, involves placing the rod at an appropriate position on the KN interface, with the first and second slots engaging with the two protrusions respectively. When the pressure rod is between the two baffles, pressing the handle causes the fourth rod to rotate, which in turn presses the corresponding baffle, causing the connecting block to rotate. The connecting block then drives the third rod to rotate, which in turn drives the first rod to rotate. This controls the first and second slots to rotate the protrusions. After rotating a certain angle, the handle and the fourth rod rotate relative to each other, moving the pressure rod out of the baffle range. Then, after the fourth rod rotates a certain angle, it rotates again to move the pressure rod back into the baffle range. This process can be repeated. Furthermore, this invention allows for adjustment of the handle position when it can reach the ground, unaffected by ground height. The handle height can be appropriately increased, resulting in a longer lever arm and making it more labor-saving during use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the baffle and connecting block in this utility model;

[0018] Figure 3 This is a schematic diagram of the threaded post at the bottom of the second rod in this utility model.

[0019] In the diagram: 1. Handlebar, 2. Pressure bar, 3. Fourth bar, 4. Third bar, 5. Baffle, 6. Connecting block, 7. Second bar, 8. Nut hole, 9. Nut block, 10. First slot, 11. First bar, 12. Second slot, 13. Anti-slip sleeve, 14. Tongue plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] like Figure 1 , Figure 2 As shown, a quick-release tool for a fire hydrant pressure-reducing orifice plate includes a first rod 11, which is vertical. The first rod 11 has a first slot 10 at its top front and a second slot 12 at its bottom rear. A second rod 7 is located at the top of the first rod 11, also vertical. A nut hole 8 and a nut block 9 are located on the left side of the second rod 7, facing left. A third rod 4 is located on the right side of the first rod 11, moving left-right. A connecting block 6 is fitted onto the third rod 4, and during use, the connecting block 6 is fixed relative to the third rod 4. Several baffles 5 are located around the connecting block 6. A fourth rod 3 is rotatably connected to the right end of the third rod 4, with all rotation axes moving left-right. A handle 1 is rotatably connected to the right end of the fourth rod 3, with its rotation axis moving forward-backward. A pressure rod 2 is located on the side of the handle 1 facing the baffle 5.

[0025] Working principle: In use, the first slot 10 and the second slot 12 are engaged with the protruding part of the KN interface. By rotating the handle 1, the pressure rod 2 is placed between the adjacent baffles 5. Pressing the handle 1 causes the fourth rod 3 to rotate, which in turn moves the pressure rod 2, pushing the baffle 5 and causing the third rod 4 to move, which in turn moves the first rod 11. When the handle 1 reaches a point where it is difficult to continue moving, the pressure rod 2 can be moved out of the baffle 5 by rotating the handle 1 itself. Then, the handle rod 1 is reset by rotating the fourth rod 3. Finally, the pressure rod 2 is moved to the range of the baffle 5 by rotating the handle rod 1 itself. Repeating the above actions will open the KN interface. When using this utility model, the handle rod 1 can be adjusted in position, so it is not affected by the distance from the ground. The length of the handle rod 1 can be set to be longer, so the lever arm is longer and it is more labor-saving and easier to operate. In addition, with the nut hole 8 and nut block 9, the nuts and blind holes on the fire hydrant cover can be sealed.

[0026] Preferably, the first rod 11 and the second rod 7 are fixedly and detachably connected. Specifically, the first rod 11 has a threaded hole at the top, and the second rod 7 has a threaded post at the bottom that matches the threaded hole, making it more flexible to use and more convenient to carry.

[0027] Preferably, the connecting block 6 is slidably sleeved on the third rod 4 and cannot rotate relative to it. The fourth rod 3 is sleeved inside the third rod 4 and can rotate and slide relative to the third rod 4. That is, the left and right positions of the connecting block 6 and the third rod 3 can be adjusted. In some indoor applications, the first rod 11 can be placed inside the fire cabinet, and the baffle 5 and the handle rod 1 can be placed outside the fire cabinet for use, making it more flexible.

[0028] Preferably, both the third rod 4 and the connecting block 6 are through cuboid structures, enabling relative sliding between the connecting block 6 and the third rod 4, while preventing relative rotation.

[0029] Preferably, the handle bar 1 is fitted with an anti-slip sleeve 13 for ease of use.

[0030] Preferably, one end of the handle 1 is provided with a tongue-shaped plate 14, which can be used as a prying tool.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-release tool for fire hydrant pressure-reducing orifice plates, characterized in that: The first rod (11) is provided with a first slot (10) at the top front side and a second slot (12) at the bottom rear side. The first rod (11) is provided with a second rod (7) at the top. The second rod (7) is provided with a nut hole (8) and a nut block (9) on the left side. The first rod (11) is provided with a third rod (4) on the right side. The third rod (4) is provided with a connecting block (6). The connecting block (6) is provided with several baffles (5) around its periphery. The third rod (4) is rotatably connected to a fourth rod (3). The fourth rod (3) is rotatably connected to a handle rod (1). The handle rod (1) is provided with a pressure rod (2) on the side facing the baffle (5).

2. The quick-release tool for a fire hydrant pressure relief orifice plate according to claim 1, characterized in that: The first rod (11) and the second rod (7) are fixedly and detachably connected.

3. A quick-release tool for a fire hydrant pressure-reducing orifice plate according to claim 2, characterized in that... The first rod (11) has a threaded hole at the top, and the second rod (7) has a threaded post at the bottom that is adapted to the threaded hole.

4. The quick-release tool for a fire hydrant pressure-reducing orifice plate according to claim 1, characterized in that: The connecting block (6) is slidably sleeved on the third rod (4) and cannot rotate relative to it. The fourth rod (3) is sleeved inside the third rod (4) and can rotate and slide relative to the third rod (4).

5. A quick-release tool for a fire hydrant pressure-reducing orifice plate according to claim 4, characterized in that: The third rod (4) and the connecting block (6) are both rectangular parallelepiped structures.

6. The quick-release tool for a fire hydrant pressure-reducing orifice plate according to claim 1, characterized in that: The grip bar (1) is fitted with an anti-slip sleeve (13).

7. A quick-release tool for a fire hydrant pressure-reducing orifice plate according to claim 1, characterized in that: The grip lever (1) has a tongue-shaped plate (14) at one end.

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