A kind of inclined rotary folding fire hydrant

Abstract

A sloped rotary folding fire hydrant comprises a base and a main pipe assembly, wherein the base is provided with a valve disc assembly, the main pipe assembly is provided with a valve stem assembly, and the top of the valve stem assembly is provided with a screw nut assembly; the top of the main pipe assembly is connected to a five-way body assembly via a sloped rotary structure, and the five-way body assembly is provided with an operating rod assembly, and the operating rod assembly is connected to the screw nut assembly via a universal joint. The present invention provides a sloped rotary structure and a universal joint so that when the sloped rotary folding fire hydrant is in use, the longitudinal axis of the five-way body assembly coincides with the longitudinal axis of the valve stem assembly, i.e., the elbow is removed, thereby avoiding the water flow from turning and reducing pressure loss; when the sloped rotary folding fire hydrant is not in use, the longitudinal axis of the five-way body assembly is perpendicular to the longitudinal axis of the valve stem assembly, so that the five-way body assembly can be hidden under the ground, thereby improving the traffic rate of the road and reducing the waste of water resources caused by the hydrant being knocked over.

Description

Technical Field

[0001] The present invention relates to the technical field of fire hydrants, in particular to an inclined rotary folding fire hydrant. Background Art

[0002] While existing foldable fire hydrants can be hidden underground, improving road accessibility, their folding function is primarily achieved through a bearing-type rotary mechanism or worm gear mechanism, which causes the five-way assembly and the main pipe assembly to be out of alignment. Consequently, an elbow is required to align the five-way assembly and the main pipe assembly with the bearing-type rotary mechanism or worm gear mechanism. This elbow deviates the longitudinal axis of the main pipe assembly and the five-way assembly, causing the water flow from the main pipe assembly to enter the five-way assembly to be diverted, resulting in significant pressure loss. Summary of the Invention

[0003] Based on this, the purpose of the present invention is to provide a sloped rotary folding fire hydrant, which avoids the water flow from turning by removing the elbow, thereby reducing pressure loss.

[0004] A sloped rotary folding fire hydrant comprises a base installed underground and a main pipe assembly, wherein the base is provided with a valve flap assembly, the main pipe assembly is provided with a valve stem assembly connected to the valve flap assembly, and the top of the valve stem assembly is provided with a screw nut assembly;

[0005] The top of the main pipe assembly is connected to the five-body assembly through an inclined rotating structure. The five-body assembly is provided with an operating rod assembly, and the operating rod assembly is connected to the screw nut assembly through a universal joint. When the inclined rotating folding fire hydrant is in use, the longitudinal axis of the five-body assembly coincides with the longitudinal axis of the valve stem assembly.

[0006] Compared with the prior art, the present invention provides an inclined plane rotating structure and a universal joint, so that when the inclined plane rotating folding fire hydrant is in use, the longitudinal axis of the five-body assembly coincides with the longitudinal axis of the valve stem assembly, that is, the elbow in the prior art is removed, avoiding the water flow from turning, thereby reducing the pressure loss; when the inclined plane rotating folding fire hydrant is not in use, the longitudinal axis of the five-body assembly is perpendicular to the longitudinal axis of the valve stem assembly, and the five-body assembly can be hidden under the ground, thereby improving the traffic rate of the road and reducing the waste of water resources caused by the hydrant body being knocked over.

[0007] Furthermore, the rotation center of the inclined plane rotation structure coincides with the folding center of the universal joint.

[0008] Furthermore, the angle between the normal line of the inclined surface of the inclined surface rotation structure and the longitudinal axis of the five-way bracket assembly is 45° to 60°.

[0009] Furthermore, the inclined surface rotation structure includes an inclined surface outer flange formed at the bottom of the five-way assembly, an inclined surface inner flange formed at the top of the main pipe assembly, and a plurality of steel balls embedded between the inclined surface outer flange and the inclined surface inner flange and located on the same plane.

[0010] Furthermore, at least one sealing ring is embedded between the inclined outer flange and the inclined inner flange.

[0011] Furthermore, a first inner locking ear and a second inner locking ear extending outward are provided on the outer bottom surface of the bevel inner flange, and an outer locking ear extending outward is provided on the side wall of the bevel outer flange;

[0012] When the inclined rotary foldable fire hydrant is in use, the outer locking ear is locked with the first inner locking ear;

[0013] Or when the inclined rotary folding fire hydrant is in an unused state, the outer locking ear is locked with the second inner locking ear.

[0014] Furthermore, the screw-nut assembly includes a sleeve connected to the universal joint, a transmission nut embedded in the sleeve, and a screw passing through the transmission nut and connected to the valve stem assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the inclined rotary foldable fire hydrant of the present invention in use;

[0016] Figure 2 This is a structural schematic diagram of the inclined rotary foldable fire hydrant of the present invention in an unused state;

[0017] Figure 3 for Figure 1 Cross-sectional view of a mid-slope rotary folding fire hydrant;

[0018] Figure 4 for Figure 2 Schematic diagram of the structure of the mid-slope rotary folding fire hydrant from another perspective when it is not in use.

[0019] Description of main component symbols:

[0020]

[0021]

[0022] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0023] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0024] See also Figures 1 to 4 In one embodiment of the present invention, a foldable fire hydrant with an inclined surface and a rotary structure is provided. The foldable fire hydrant comprises a base 10 and a main pipe assembly 11 installed underground. The base 10 is provided with a valve flap assembly 12. The main pipe assembly 11 is provided with a valve stem assembly 13 connected to the valve flap assembly 12. The top of the valve stem assembly 13 is provided with a screw nut assembly 14.

[0025] The top of the main pipe assembly 11 is connected to the five-body assembly 16 through an inclined rotating structure 15. The five-body assembly 16 is provided with an operating rod assembly 17. The operating rod assembly 17 is connected to the screw nut assembly 14 through a universal joint 18. When the inclined rotating folding fire hydrant is in use, the longitudinal axis of the five-body assembly 16 coincides with the longitudinal axis of the valve stem assembly 13.

[0026] It should be noted that, in the present invention, by providing the inclined surface rotary structure 15 and the universal joint 18, when the inclined surface rotary folding fire hydrant is in use, the longitudinal axis of the five-body assembly 16 coincides with the longitudinal axis of the valve stem assembly 13, and the overall structure is linear, that is, the elbow in the prior art is removed, thereby avoiding the water flow from turning, thereby reducing pressure loss; when the inclined surface rotary folding fire hydrant is not in use, the longitudinal axis of the five-body assembly 16 is perpendicular to the longitudinal axis of the valve stem assembly 13, and the five-body assembly 16 can be hidden under the ground, thereby improving the traffic rate of the road and reducing the waste of water resources caused by the hydrant body being knocked over.

[0027] In a preferred embodiment of the present application, the rotation center of the inclined surface rotation structure 15 coincides with the folding center of the universal joint 18 , thereby achieving a rotation effect of the five-piece assembly 16 .

[0028] In another preferred embodiment of the present application, the angle between the normal line of the inclined surface of the inclined surface rotating structure 15 and the longitudinal axis of the five-bracket assembly 16 is 45° to 60°, so as to facilitate the processing and installation of the inclined surface rotating structure 15 .

[0029] See also Figures 1 to 4The inclined surface rotation structure 15 includes an inclined surface outer flange 151 formed at the bottom of the five-way body component 16, an inclined surface inner flange 152 formed at the top of the main pipe component 11, and a plurality of steel balls 153 embedded between the inclined surface outer flange 151 and the inclined surface inner flange 152 and located on the same plane.

[0030] Specifically, a bearing structure is formed between the inclined outer flange 151, the inclined inner flange 152 and the steel ball 153, thereby achieving a rotation effect.

[0031] Furthermore, at least one sealing ring 154 is embedded between the inclined outer flange 151 and the inclined inner flange 152 , and a sealing function is achieved by the sealing ring 154 .

[0032] See also Figures 1 to 4 The outer bottom surface of the inclined inner flange 152 is provided with a first inner locking ear 1521 and a second inner locking ear 1522 extending outward, and the side wall of the inclined outer flange 151 is provided with an outer locking ear 1511 extending outward;

[0033] When the inclined rotary foldable fire hydrant is in use, that is, the five-way body assembly 16 and the valve stem assembly 13 are in a straight line, and the outer locking ear 1511 is locked with the first inner locking ear 1521;

[0034] Or when the inclined rotary foldable fire hydrant is in an unused state, that is, a right angle is formed between the five-way body assembly 16 and the valve stem assembly 13 , the outer locking ear 1511 is locked with the second inner locking ear 1522 .

[0035] Specifically, the outer locking ear 1511 is connected to the first inner locking ear 1521 or the second inner locking ear 1522 by bolts or latches. In other preferred embodiments, locking can also be performed by snapping.

[0036] See also Figures 1 to 4 The screw-nut assembly 14 includes a sleeve 141 connected to the universal joint 18, a drive nut 142 embedded in the sleeve 141, and a screw 143 passing through the drive nut 142 and connected to the valve stem assembly 13. The outer wall of the drive nut 142 is threadedly connected to the inner wall of the sleeve 141, and the rotation of the drive nut 142 is converted into the linear motion of the screw, that is, the lifting motion of the screw.

[0037] It should be further explained that when a fire occurs and the fire extinguisher needs to be used, the locking state between the outer locking ear 1511 and the second inner locking ear 1522 is released, and the five-way body assembly 16 is straightened upward; the outer locking ear 1511 and the first inner locking ear 1521 are locked, and the joystick assembly 17 is rotated by a fire hydrant wrench, and the sleeve 141 and the transmission nut 142 are driven to rotate through the universal joint 18. The rotation of the transmission nut 142 causes the screw rod 143 to rise, thereby controlling the valve stem assembly 13 to drive the valve flap assembly 12 to rise to open the valve. At this time, water enters the main pipe assembly 11 and the five-way body assembly 16 in sequence from the base 10, and then the fire extinguishing operation is performed; when use is completed, the reverse operation can be performed.

[0038] In summary, in the present invention, the inclined rotating structure 15 and the universal joint 18 are provided to remove the elbow in the prior art, thereby avoiding the turning of the water flow and reducing the pressure loss; at the same time, the five-way body assembly 16 can be hidden under the ground, thereby improving the traffic rate of the road and reducing the waste of water resources caused by the bolt body being knocked over.

[0039] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. The above-mentioned embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, which all fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent of the present invention shall be based on the attached claims.

Claims

1. A foldable fire hydrant with an inclined rotary structure, comprising a base mounted below ground and a main pipe assembly, characterized in that: The base is provided with a valve flap assembly, the main pipe assembly is provided with a valve stem assembly connected to the valve flap assembly, and the top of the valve stem assembly is provided with a screw nut assembly; The top of the main pipe assembly is connected to the five-piece assembly through an inclined rotating structure. The five-piece assembly is provided with an operating rod assembly, and the operating rod assembly is connected to the screw nut assembly through a universal joint. When the inclined rotating foldable fire hydrant is in use, the longitudinal axis of the five-piece assembly coincides with the longitudinal axis of the valve stem assembly. The inclined surface rotation structure includes an inclined surface outer flange formed at the bottom of the five-way assembly, an inclined surface inner flange formed at the top of the main pipe assembly, and a plurality of steel balls embedded between the inclined surface outer flange and the inclined surface inner flange and located on the same plane. A bearing structure is formed between the inclined surface outer flange, the inclined surface inner flange and the steel balls.

2. The inclined rotary foldable fire hydrant according to claim 1, characterized in that: The rotation center of the inclined surface rotation structure coincides with the folding center of the universal joint.

3. The inclined rotary foldable fire hydrant according to claim 1, characterized in that: The angle between the normal line of the inclined surface of the inclined surface rotation structure and the longitudinal axis of the five-piece assembly is 45° to 60°.

4. The inclined rotary foldable fire hydrant according to claim 1, characterized in that: At least one sealing ring is embedded between the inclined surface outer flange and the inclined surface inner flange.

5. The inclined rotary foldable fire hydrant according to claim 1, characterized in that: The outer bottom surface of the inclined inner flange is provided with a first inner locking ear and a second inner locking ear extending outward, and the side wall of the inclined outer flange is provided with an outer locking ear extending outward; When the inclined rotary foldable fire hydrant is in use, the outer locking ear is locked with the first inner locking ear; Or when the inclined rotary folding fire hydrant is in an unused state, the outer locking ear is locked with the second inner locking ear.

6. The inclined rotary foldable fire hydrant according to any one of claims 1 to 5, characterized in that: The screw-nut assembly includes a sleeve connected to the universal joint, a transmission nut embedded in the sleeve, and a screw passing through the transmission nut and connected to the valve stem assembly.

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