CN215567962U

CN215567962U - Improved fire hydrant

Info

Publication number: CN215567962U
Application number: CN202121475044.1U
Authority: CN
Inventors: 洪顺伙; 涂宏博; 邓中武
Original assignee: Jinyuan Technology Development Co ltd
Current assignee: Jinyuan Technology Development Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-18
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to the technical field of fire-fighting equipment, in particular to an improved fire hydrant, which comprises a valve body, wherein a water inlet and a water outlet are formed in the bottom of the valve body, a valve seat is arranged between the water inlet and the water outlet, a valve seat hole is formed in the valve seat, a vertical valve rod is arranged in the valve body, the bottom of the valve rod penetrates through the valve seat hole, a valve core is arranged at the tail end of the valve rod, the valve core moves longitudinally along with the valve rod, a gap is formed between the valve rod and the valve seat hole, and the top of the valve core can be tightly attached to the area, located outside the valve seat hole, of the bottom of the valve seat in the moving process to form a sealing structure. The utility model is beneficial to solving the problems of insufficient control precision and short service life of the valve core of the existing sealing structure.

Description

Improved fire hydrant

Technical Field

The utility model relates to the technical field of fire-fighting equipment, in particular to an improved fire hydrant.

Background

The fire hydrant is one of the most important fire fighting equipments, if the fire hydrant is installed inside a building and is called as an indoor fire hydrant, the indoor fire hydrant is an important component of a fire water system inside the building and is usually positioned in a fire hydrant box on a corridor wall, when a fire hazard occurs, residents or firemen can conveniently put out the fire hazard in time, due to the influence of an indoor environment, the space where the general indoor fire hydrant is positioned is narrow, so that the operation is difficult during daily maintenance and overhaul, and the valve core of the existing indoor fire hydrant is generally arranged at the tail end of the valve rod, the valve rod is used for controlling the movement of the valve core, so that the outer end of the valve core is tightly attached to the valve seat hole, thereby achieving the sealing effect and achieving the purpose of opening and closing control, the tightness between the valve core and the valve seat can not be accurately controlled, whether the valve core is fully closed or not generally judged by continuously screwing the valve rod, and the valve core in the state is often excessively extruded, the deformation amount is large, which can cause the service life of the valve core to be greatly shortened, and causes the problems of frequent maintenance and high labor intensity during maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an improved fire hydrant, which is beneficial to solving the problems of insufficient control precision and short service life of a valve core of the existing sealing structure.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an improved fire hydrant comprises a valve body, wherein a water inlet is arranged at the bottom of the valve body, a water outlet is arranged at one side of the valve body, a valve seat is arranged between the water inlet and the water outlet, a valve seat hole is formed in the valve seat and is communicated with the water inlet and the water outlet, a valve cover is connected to the top of the valve body, a sealing cavity is arranged at the center of the valve cover, sealing filler is filled in the sealing cavity, a gland is arranged at the top of the valve cover, a vertical valve rod is arranged in the valve body, the valve rod penetrates through the valve seat hole and is connected with the gland, a bolt is connected between the valve rod and the gland, the bottom of the valve rod penetrates through the valve seat hole, a valve core is arranged at the tail end of the valve rod, the top of the valve rod extends to the outside of the valve body and is provided with a hand wheel, the valve core moves longitudinally along with the valve rod, a gap is formed between the valve rod and the valve core moves in the process, the top of the valve seat can be tightly attached to the area, located on the outer side of the valve seat hole, of the bottom of the valve seat to form a sealing structure.

Preferably, the valve core is of a disc structure, the longitudinal section of the valve core is U-shaped, the valve seat is located in the area outside the valve seat hole and is provided with a sealing groove matched with the outline of the valve core, and the valve core can be inserted into the sealing groove and separated from the sealing groove to form an opening and closing structure for controlling the valve seat hole.

Preferably, an annular first elastic piece is fixedly arranged on the side wall of the sealing groove, and after the valve core is inserted into the sealing groove, the outer side wall of the valve core is in interference fit with the first elastic piece.

Preferably, an annular second elastic piece is fixedly arranged on the outer side wall of the valve core, and after the valve core is inserted into the sealing groove, the second elastic piece is in interference fit with the first elastic piece.

Preferably, a first bevel edge is arranged at the inner corner of the bottom of the first elastic member.

Preferably, a first inclined edge is arranged at the inner corner of the bottom of the first elastic piece, and a second inclined edge is arranged at the outer corner of the top of the second elastic piece.

Preferably, the valve rod is provided with an external thread structure through the area of the valve seat hole; the downthehole spacing seat that is equipped with of disk seat, spacing seat outside with disk seat hole lateral wall fixed connection, spacing seat center department is equipped with fore-and-aft spacing through-hole, be equipped with the inner thread structure on the spacing through-hole lateral wall, the valve rod with spacing through-hole threaded connection, be located on the spacing seat the regional current hole that the water supply flow passed that still is equipped with in the spacing through-hole outside.

Compared with the prior art, the utility model at least comprises the following advantages:

according to the utility model, the valve rod penetrates through the valve seat hole, the valve core is arranged below the valve seat hole, so that when the control valve rod moves up and down, the top of the valve core is tightly attached to the valve seat, and the valve core is combined with the splicing structure of the sealing groove and the valve core, the contact area of the valve core and the sealing groove is large, the sealing effect between the valve core and the valve seat hole is better, and the friction coefficient is increased instantly after the valve core is contacted with the sealing groove in the valve rod control process, so that the sealing degree of the valve core is judged more easily and accurately, and the phenomenon that the service life of the valve core is shortened due to excessive extrusion of the valve core is avoided; according to the utility model, the elastic element is arranged between the valve core and the sealing groove, so that the tightness between the valve core and the sealing groove is further improved, and a better sealing effect is achieved; the utility model can also arrange a limiting seat in the valve seat hole, so that the position of the valve rod can be accurately controlled under the condition of meeting the requirement of water flow passage, and the phenomenon that the sealing effect is influenced by position deviation of the valve rod during longitudinal movement is avoided.

Drawings

FIG. 1 is a schematic view of the internal structure of a fire hydrant in one embodiment;

FIG. 2 is a partial structural diagram of the valve core in use;

FIG. 3 is a schematic view of the first and second elastic members;

fig. 4 is a schematic structural view of a spacing seat in another embodiment.

The figure is marked with: 1-a valve body; 11-a water inlet; 12-a water outlet; 13-a valve seat; 131-a seal groove; 14-a valve seat bore; 15-a first elastic member; 151-first hypotenuse; 16-a limiting seat; 161-limiting through holes; 162-a passage hole; 2-valve cover; 21-sealing the cavity; 3-pressing the cover; 4-sealing packing; 5-valve stem; 6-hand wheel; 7-a valve core; 71-a second seal; 711-second hypotenuse.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description is made with reference to the accompanying drawings and detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the two elements or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, the embodiment discloses an improved fire hydrant, which comprises a valve body 1, a valve cover 2, a gland 3, a valve rod 5, a hand wheel 6 and a valve core 7.

Valve body 1 is as major structure, mainly plays the bearing effect, and its bottom is the water inlet 11 of vertical setting, and 1 one side of valve body is equipped with horizontally delivery port 12, and water inlet 11 passes through the pipeline and is connected with municipal water supply pipe, and delivery port 12 is used for connecting fire control piece equipment such as fire hose. Valve body 1 is located and is equipped with disk seat 13 between water inlet 11 and the delivery port 12, be equipped with vertical disk seat hole 14 on the disk seat 13, disk seat hole 14 mainly plays the intercommunication the effect of water inlet 11 and delivery port 12 for rivers can follow water inlet 11 flow direction delivery port 12.

As shown in fig. 2, the valve seat 13 is provided with an annular sealing groove 131 in the region outside the bottom of the valve seat hole 14, and the sealing groove 131 has a U-shaped longitudinal section and is open at the bottom.

Referring to fig. 1, the valve body 1 is located above the water inlet 11, the top of the valve body is fixedly connected with a valve cover 2 through a bolt, a sealing cavity 21 is arranged at the center of the valve cover 2, the top of the sealing cavity 21 is open, a through hole for the valve rod 5 to penetrate through is arranged at the center of the bottom of the sealing cavity, a sealing filler 4 is filled in the sealing cavity 21, a gland 3 is fixedly connected with the top of the valve cover 2 through a bolt, and one of the functions of the valve cover 3 is to cover the sealing cavity 21, so that the sealing filler 4 is tightly arranged in the sealing cavity 21.

A valve rod 5 is arranged in the valve body 1, and a hand wheel 6 and a valve core 7 are fixedly connected to the upper end and the lower end of the valve rod 5 in a distributed manner. The valve rod 5 main part is vertical to be worn to establish valve gap 2 and gland 3, valve rod 5 with bolted connection between the gland 3 for it is rotatory to drive valve rod 5 through rotatory hand wheel 6, can structure this threaded connection structure, realizes the longitudinal movement of valve rod 5. The sealing filler 4 is tightly filled between the cavity wall of the sealing cavity 21 and the valve rod 5, so that a sealing effect can be achieved, and water in the valve body 1 is prevented from overflowing through a gap between the valve rod 5 and the valve cover 2. The lower end of the valve rod 5 passes through the valve seat hole 14, and a gap is formed between the valve rod 5 and the side wall of the valve seat hole 14 and is used for water flow.

The valve core 7 is located below the valve seat hole 14, the valve core 7 is of a disc structure, the longitudinal section of the valve core 7 is U-shaped, the outline is matched with the outline of the sealing groove 131, and after the valve core 7 is inserted into the sealing groove 131, the valve core 7 and the sealing groove can form a tightly attached plug-in structure, so that the opening and closing structure for controlling the valve seat hole 14 is formed. Specifically, case 7 can follow valve rod 5 and take place longitudinal movement, after valve rod 5 drives case 7 rebound, case 7 can insert in the seal groove 131, after further moving, 7 tops of case and lateral wall and the inseparable laminating of seal groove 131 to form annular enclosed construction to disk seat hole 14, reach closed disk seat hole 14, separation water inlet 11 and delivery port 12's effect, the same reason, after driving hand wheel 6 drives 5 reverse rotation of valve rod, case 7 follows valve rod 5 rebound, case 7 breaks away from seal groove 131, and the clearance between the two constantly increases, realize the effect of intercommunication water inlet and delivery port 12, therefore, reach the airtight structure that opens and shuts that receives the control.

Further, as shown in fig. 3, an annular first elastic member 15 is fixedly arranged in the vertical side wall of the sealing groove 131, the first elastic member 15 specifically adopts a rubber sheet ring, after the first elastic member is vertically arranged, the outer side surface of the first elastic member is tightly connected and fixed with the vertical side wall of the sealing groove 131 through glue, a first inclined edge 151 is arranged at the inner corner of the bottom of the first elastic member 15, and the first inclined edge 151 facilitates smooth insertion of the valve element 7. Correspondingly, the annular second elastic component 71 of case 7 lateral wall fixedly connected with, the structure of second elastic component 71 is the same with first elastic component 15's material structure, second elastic component 71 top outside corner is equipped with second hypotenuse 711, and second hypotenuse 711 is parallel with first hypotenuse 151, all plays the effect that the grafting action between help case 7 and the seal groove 131 can smoothly go on, case 7 inserts behind the seal groove 131, second elastic component 71 with first elastic component 15 interference fit to take place mutual extrusion, can constitute inseparabler crooked binding face of laminating after the deformation, reach more excellent sealed effect.

In another embodiment, the lower end of the valve rod 5 is provided with an external thread structure through the area in the valve seat hole 14; a horizontal limiting seat 16 is arranged in the valve seat hole 14, the outer side of the limiting seat 16 is fixedly connected (or integrally formed) with the side wall of the valve seat hole 14 by welding and the like, a longitudinal limiting through hole 161 is arranged at the center of the limiting seat 16, an internal thread structure matched with the external thread of the valve rod 5 is arranged on the side wall of the limiting through hole 161, the valve rod 5 is in threaded connection with the limiting through hole 161, this helps to stabilize the vertical direction of the stem 5, to avoid positional deviation due to longitudinal movement of the stem 5 and the spool 7, thereby weakening the tight joint effect and affecting the sealing effect, the limiting seat 16 is further provided with a through hole 162 for water flow to pass through in the area outside the limiting through hole 161, the through hole 162 in this embodiment is a plurality of annular strip-shaped holes, in other embodiments, a plurality of through hole structures with other contours, such as round holes or square holes, may also be adopted.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An improved fire hydrant is characterized by comprising a valve body, wherein a water inlet is arranged at the bottom of the valve body, a water outlet is arranged at one side of the valve body, a valve seat is arranged between the water inlet and the water outlet, a valve seat hole is formed in the valve seat and is communicated with the water inlet and the water outlet, a valve cover is connected to the top of the valve body, a sealing cavity is arranged at the central position of the valve cover, sealing filler is filled in the sealing cavity, a gland is arranged at the top of the valve cover, a vertical valve rod is arranged in the valve body, the valve rod penetrates through the valve cover and the gland, the valve rod is connected with the gland through a bolt, the bottom of the valve rod penetrates through the valve seat hole, a valve core is arranged at the tail end of the valve rod, the top of the valve rod extends to the outside of the valve body and is provided with a hand wheel, the valve core follows the valve rod to move longitudinally, a gap is formed between the valve rod and the valve seat hole, and in the moving process of the valve core, the top of the valve core can be tightly attached to the area, located outside the valve seat hole, of the bottom of the valve seat to form a sealing structure.

2. An improved fire hydrant according to claim 1, wherein said valve plug is a disc structure having a U-shaped longitudinal section, said valve seat has a sealing groove adapted to the contour of said valve plug in the area outside said valve seat hole, said valve plug can be inserted into and removed from said sealing groove to form an opening and closing structure for controlling said valve seat hole.

3. An improved fire hydrant according to claim 2, wherein an annular first elastic member is fixedly disposed on a side wall of the sealing groove, and after the valve element is inserted into the sealing groove, an outer side wall of the valve element is in interference fit with the first elastic member.

4. An improved fire hydrant according to claim 3, wherein an annular second elastic member is fixedly provided on an outer side wall of the valve element, and after the valve element is inserted into the sealing groove, the second elastic member is in interference fit with the first elastic member.

5. An improved fire hydrant according to claim 3, wherein said first resilient member is provided with a first beveled edge at the bottom inside corner.

6. An improved fire hydrant according to claim 4, wherein said first resilient member has a first beveled edge at a bottom inside corner and a second beveled edge at a top outside corner.

7. An improved fire hydrant according to any one of claims 1 to 6 in which the region of the valve stem passing through the valve seat bore is provided with an external thread formation; the downthehole spacing seat that is equipped with of disk seat, spacing seat outside with disk seat hole lateral wall fixed connection, spacing seat center department is equipped with fore-and-aft spacing through-hole, be equipped with the inner thread structure on the spacing through-hole lateral wall, the valve rod with spacing through-hole threaded connection, be located on the spacing seat the regional current hole that the water supply flow passed that still is equipped with in the spacing through-hole outside.