CN211449811U

CN211449811U - Static seal structure for pressure regulating fire-fighting valve

Info

Publication number: CN211449811U
Application number: CN202020028804.3U
Authority: CN
Inventors: 许彬鑫
Original assignee: Zhejiang Jing Heng Copper Industry Ltd By Share Ltd
Current assignee: Zhejiang Jing Heng Copper Industry Ltd By Share Ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-09-08
Anticipated expiration: 2030-01-07

Abstract

The utility model discloses a static seal structure for pressure regulating fire-fighting valve, which comprises a valve body, there is the valve gap at the top of valve body through bolt fixed mounting, the internal thread through-hole has been seted up to the inside of valve gap, the inner wall threaded connection of internal thread through-hole has the screw rod, the bottom of screw rod is rotated through the bearing and is connected with the connecting rod, the bottom fixedly connected with of connecting rod is used for the shutoff stopper of shutoff valve body, the top of valve gap inner wall is seted up flutedly, the top fixedly connected with of recess inner wall is used for the static seal assembly of sealed valve body and valve gap junction, be close to the fixed surface at its middle part. The utility model discloses an above-mentioned isotructure's cooperation has solved the static seal structure that current valve was used, and sealed effect is not good, and inside liquid takes place to reveal from the junction of valve body and valve gap easily when the valve is opened, has reduced the problem of the leakproofness of valve.

Description

Static seal structure for pressure regulating fire-fighting valve

Technical Field

The utility model relates to the technical field of valves, specifically be a static seal structure for pressure regulating fire-fighting valve.

Background

The fire-fighting equipment is mainly composed of a fire-fighting pipeline, a valve, a spray gun, a pressure tank and the like, the fire-fighting valve plays a vital role in fire control, the performance of the valve is determined by the sealing performance between a valve cover and a valve body, and the sealing structure of the valve can be divided into a static sealing structure and a dynamic sealing structure. Wherein the static seal is free of relative movement between seal surfaces, such as the seal at the junction of the valve body and the bonnet, and the dynamic seal is free of relative movement between seal surfaces, such as the seal at the valve stem. The valve body is static sealed with the sealed of valve gap junction, often adopts welded connection and bolted connection lip limit to weld seal structure, because the difficult simple quick opening of current pressure valve door and closing, the static seal structure that the valve door was used simultaneously, sealed effect is not good, and inside liquid takes place to reveal from the junction of valve body and valve gap easily when the valve is opened, has reduced the leakproofness of valve, consequently needs to improve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure regulating fire valve is with static seal structure, possess when the shutoff valve body of shutoff, the valve body is in the closed condition, the liquid of valve body can not take place to reveal from the junction of valve body and valve gap, and when the shutoff stopper upwards moves and removes the shutoff to the valve body, the valve body is in the open condition, shifting up of connecting rod can drive the shutoff and stop up and shift up, also can drive the sealing washer simultaneously and shift up, the elasticity of compression spring can be overcome in shifting up of sealing washer, promote the sealing ring rebound, make the sealing ring advance as in the recess, thereby the junction of valve body and valve gap can be sealed to the sealing ring, make sealed effect better, when having avoided the valve body to open, liquid takes place to reveal from the junction of valve body and valve gap, simultaneously can be simple quick open and close the advantage of valve, the problem of proposing.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a static seal structure for pressure regulating fire control valve, includes the valve body, there is the valve gap at the top of valve body through bolt fixed mounting, the internal thread through-hole has been seted up to the inside of valve gap, the inner wall threaded connection of internal thread through-hole has the screw rod, the bottom of screw rod is rotated through the bearing and is connected with the connecting rod, the bottom fixedly connected with of connecting rod is used for the shutoff stopper of shutoff valve body, the top of valve gap inner wall is seted up flutedly, the top fixedly connected with of recess inner wall is used for the static seal assembly of sealed valve body and valve gap junction, be close to the fixed surface in its middle part on the connecting rod and be connected with the sealing washer.

Preferably, the surface of the screw rod close to the top end of the screw rod is fixedly connected with a steering handle, and the steering handle and the screw rod are of an integrally formed structure.

Preferably, static seal assembly includes compression spring, compression spring fixed connection is on the top of recess inner wall, compression spring's bottom fixedly connected with is used for the sealing ring of sealed valve body and valve gap junction, and the bottom of screw rod runs through the sealing ring, the inner wall that is close to its top on the valve body sets up the annular groove that supplies the sealing ring to remove.

Preferably, the number of the compression springs is four, the four compression springs are equally divided into two groups, and the two groups of compression springs are symmetrically distributed on the top of the inner wall of the groove by taking the screw rod as a symmetric center.

Preferably, the lower surface of the sealing ring is provided with an annular groove for placing the sealing ring, and the annular groove is movably connected with the sealing ring.

Preferably, the sealing ring and the sealing ring are made of hard alloy with high strength, and the diameter of the inner hole of the sealing ring is larger than that of the screw rod.

Compared with the prior art, the beneficial effects of the utility model are that: when the valve body is sealed and blocked by a seal plug, the valve body is in a closed state, liquid in the valve body cannot leak from the joint of the valve body and the valve cover, and the valve body needs to be opened, the screw rod is rotated by the rotating handle, the screw rod can move upwards while rotating due to the threaded connection between the screw rod and the internal thread through hole, and the connecting rod can be driven by the screw rod to move upwards due to the rotary connection between the connecting rod and the screw rod, the upward movement of the connecting rod can drive the seal plug to move upwards and also drive the seal ring to move upwards, the seal ring moves upwards to enter the annular groove to seal the inner hole of the seal ring, meanwhile, the upward movement of the seal ring can overcome the elastic force of the compression spring to push the seal ring to move upwards, so that the seal ring can seal the joint of the valve body and the valve cover, the sealing effect is better, and simultaneously, the valve can be opened and closed simply and quickly.

Drawings

Fig. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a front cross-sectional view of the sealing ring of FIG. 1 sealing the junction between the valve body and the valve cover;

fig. 3 is a schematic structural view of the sealing ring of the present invention.

In the figure: 1-valve body, 2-bolt, 3-valve cover, 4-internal thread through hole, 5-screw, 6-connecting rod, 7-sealing plug, 8-sealing ring, 9-steering handle, 10-compression spring, 11-sealing ring, 12-annular groove and 13-annular groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a static seal structure for pressure regulating fire control valve, includes valve body 1, and there is valve gap 3 at the top of valve body 1 through 2 fixed mounting of bolt, and internal thread through-hole 4 is seted up to valve gap 3's inside, and the inner wall threaded connection of internal thread through-hole 4 has screw rod 5.

Further, the surface of the screw rod 5 close to the top end of the screw rod is fixedly connected with a steering handle 9, the steering handle 9 and the screw rod 5 are of an integrally formed structure, and the steering handle 9 enables the screw rod 5 to be rotated more conveniently.

The bottom of screw rod 5 is connected with connecting rod 6 through the bearing rotation, the bottom fixedly connected with of connecting rod 6 is used for the shutoff stopper 7 of shutoff valve body 1, the top of valve gap 3 inner wall is seted up flutedly, the top fixedly connected with of recess inner wall is used for the static seal assembly of sealed valve body 1 with valve gap 3 junction, be close to the fixed surface in its middle part on the connecting rod 6 and be connected with sealing washer 8, the upper surface of sealing washer 8 and static seal assembly's upper surface swing joint, rotate screw rod 5 through steering handle 9, because

screw rod

5 and 4 threaded connection of internal thread through-hole, consequently, screw rod 5 can rotate limit rebound, and because connecting rod 6 and screw rod 5 are connected for rotating, screw rod 5 can drive connecting rod 6 rebound.

Further, the static sealing component comprises a compression spring 10, the compression spring 10 is fixedly connected to the top of the inner wall of the groove, the bottom end of the compression spring 10 is fixedly connected with a sealing ring 11 for sealing the joint of the valve body 1 and the valve cover 3, the bottom end of the screw rod 5 penetrates through the sealing ring 11, an annular groove 12 for the movement of the sealing ring 11 is formed in the inner wall of the valve body 1 close to the top of the valve body, the upward movement of the connecting rod 6 can drive the sealing plug 7 to move upward and also drive the sealing ring 8 to move upward, the sealing ring 8 moves upward and enters the annular groove 13 to seal the inner hole of the sealing ring 11, meanwhile, the upward movement of the sealing ring 8 can overcome the elasticity of the compression spring 10 and push the sealing ring 11 to move upward, so that the sealing ring 11 enters the groove, the sealing ring 11 can seal the joint of the valve body 1 and the valve cover 3, the sealing effect is better, and liquid, and simultaneously, the valve can be opened and closed simply and quickly.

Further, compression spring 10's quantity is four, and quantity is divided equally for two sets ofly for four compression spring 10, and two sets of compression spring 10 use screw rod 5 as the symmetrical center symmetric distribution on the top of recess inner wall, through four compression spring 10's setting for it is better to the pressure effect of supporting of sealing washer 8, thereby the junction of sealed valve body 1 and valve gap 3 that can be better.

Further, the lower surface of the sealing ring 11 is provided with an annular groove 13 for placing the sealing ring 8, the annular groove 13 is movably connected with the sealing ring 8, and the sealing ring 8 can better seal the inner hole of the sealing ring 11 through the arrangement of the annular groove 13.

Further, the material of sealing washer 8 and sealing ring 11 is the carbide preparation that intensity is higher and forms, and the diameter of the 11 hole in sealing ring is greater than the diameter of screw rod 5, and the carbide material can make more wear-resisting of sealing ring 11 and sealing washer 8, has improved life.

The working principle is as follows: when the static sealing structure for the pressure-regulating fire valve is used, when the valve body 1 is sealed by the sealing plug 7, the valve body 1 is in a closed state, liquid in the valve body 1 cannot leak from the joint of the valve body 1 and the valve cover 3, and the valve body 1 needs to be opened, the screw rod 5 is rotated by the steering handle 9, because the screw rod 5 is in threaded connection with the internal thread through hole 4, the screw rod 5 can rotate and move upwards, and because the connecting rod 6 and the screw rod 5 are in rotational connection, the screw rod 5 can drive the connecting rod 6 to move upwards, the upward movement of the connecting rod 6 can drive the sealing plug 7 to move upwards and simultaneously drive the sealing ring 8 to move upwards, the sealing ring 8 moves upwards to enter the inner hole of the sealing ring 11 in the annular groove 13, meanwhile, the upward movement of the sealing ring 8 can overcome the elasticity of the compression spring 10 to push the sealing ring 11 to move upwards, so that the sealing ring 11 can enter the groove, make sealed effect better, when having avoided valve body 1 to open, liquid takes place to reveal from the junction of valve body 1 and valve gap 3.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a static seal structure for pressure regulating fire-fighting valve, includes valve body (1), there is valve gap (3), its characterized in that at the top of valve body (1) through bolt (2) fixed mounting: internal thread through hole (4) are seted up to the inside of valve gap (3), the inner wall threaded connection of internal thread through hole (4) has screw rod (5), the bottom of screw rod (5) is rotated through the bearing and is connected with connecting rod (6), the bottom fixedly connected with of connecting rod (6) is used for shutoff stopper (7) of valve body (1), the top of valve gap (3) inner wall is seted up flutedly, the top fixedly connected with of recess inner wall is used for the static seal assembly of sealed valve body (1) and valve gap (3) junction, be close to fixed surface in its middle part on connecting rod (6) and be connected with sealing washer (8), the upper surface of sealing washer (8) and static seal assembly's upper surface swing joint.

2. The static seal structure for the pressure-regulating fire valve according to claim 1, characterized in that: the surface of the screw rod (5) close to the top end of the screw rod is fixedly connected with a steering handle (9), and the steering handle (9) and the screw rod (5) are of an integrally formed structure.

3. The static seal structure for the pressure-regulating fire valve according to claim 1, characterized in that: static seal assembly includes compression spring (10), compression spring (10) fixed connection is on the top of recess inner wall, the bottom fixedly connected with of compression spring (10) is used for sealing up sealing ring (11) of valve body (1) and valve gap (3) junction, and the bottom of screw rod (5) runs through sealing ring (11), inner wall that is close to its top on valve body (1) sets up annular groove (12) that supply sealing ring (11) to remove.

4. The static seal structure for the pressure-regulating fire valve according to claim 3, characterized in that: the number of the compression springs (10) is four, the four compression springs (10) are equally divided into two groups, and the two groups of the compression springs (10) are symmetrically distributed on the top of the inner wall of the groove by taking the screw rod (5) as a symmetric center.

5. The static seal structure for the pressure-regulating fire valve according to claim 3, characterized in that: the lower surface of sealing ring (11) is seted up and is used for placing ring channel (13) of sealing washer (8), ring channel (13) and sealing washer (8) swing joint.

6. The static seal structure for the pressure-regulating fire valve according to claim 3, characterized in that: the sealing ring (8) and the sealing ring (11) are both made of hard alloy with higher strength, and the diameter of the inner hole of the sealing ring (11) is larger than that of the screw rod (5).