CN210178942U

CN210178942U - Stop valve rod sealing device

Info

Publication number: CN210178942U
Application number: CN201920993461.1U
Authority: CN
Inventors: Rongying Ji; 季荣英
Original assignee: Jiujiang Dechang Hardware Electromechanical Co Ltd
Current assignee: Jiujiang Dechang Hardware Electromechanical Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-03-24
Anticipated expiration: 2029-06-28

Abstract

The utility model discloses a stop valve rod sealing device, which comprises a valve body, a valve rod, a sealing ring, a sealing base and a limiting block, a group of water outlets and a group of water inlets are respectively arranged in the valve body close to the bottom end, the water outlets are communicated with the water inlets through pipelines, a group of sealing bases are arranged in the middle of the upper end of the valve body, a plurality of groups of threaded holes for bolts are arranged in the sealing bases and the valve body, the sealing base is fixedly connected with the valve body through bolts, one side of the lower end of the sealing base, which is close to the valve body, is fixedly connected with a group of limiting blocks, the limiting block is connected with the inner wall of the valve body in a sliding way, a group of valve rods connected in a sliding way are arranged in the sealing base, a set of sealing rings are arranged between the valve rod and the sealing base, the sealing rings are arranged inside the sealing base in an adhesion mode, and the sealing rings are connected with the valve rod in a sliding mode. The stop valve rod sealing device is simple in structure and easy to operate, and the valve clack is not easy to damage.

Description

Stop valve rod sealing device

Technical Field

The utility model belongs to the technical field of the valve, concretely relates to stop valve rod sealing device.

Background

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur.

Among the prior art, current stop valve is after long-time the use, and sealed effect weakens gradually, and inside sealing ring suffers destruction, produces the phenomenon that the valve leaked, and simultaneously when stop valve switch, because the velocity of flow of inside medium is great, and long-term, the valve clack constantly receives the injury, and then influences its life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stop valve rod sealing device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a stop valve rod sealing device comprises a valve body, a valve rod, a sealing ring, a sealing base and a limiting block, wherein a group of water outlets and a group of water inlets are respectively arranged near the bottom end in the valve body, the water outlets and the water inlets are communicated through a pipeline, a group of sealing base is arranged in the middle of the upper end of the valve body, a plurality of groups of threaded holes for bolts are formed in the sealing base and the valve body, the sealing base and the valve body are fixedly connected through bolts, a group of limiting blocks are fixedly connected to one side of the lower end of the sealing base, which is near the inside of the valve body, the limiting block is in sliding connection with the inner wall of the valve body, a group of valve rod in sliding connection is arranged in the sealing base, a group of sealing ring is arranged between the valve rod and the sealing base, the sealing, be provided with a set of threaded connection's telescopic link in the valve rod, and the screw length in the telescopic link is not less than 1/5 of telescopic link length, telescopic link and valve rod lower extreme junction are provided with a set of sealing ring, the sealing ring adhesion sets up the lower extreme in the valve rod, and is sliding connection between sealing ring and the telescopic link, a set of valve clack of telescopic link lower extreme fixedly connected with, the lower extreme of valve clack is provided with a set of rubber circle, and the rubber circle cup joints on the valve clack.

Preferably, the lower end of the fixing block is provided with a group of gaskets in an adhesion manner.

Preferably, the upper end of the valve rod is provided with a first hand wheel in fixed connection, and the upper end of the telescopic rod in the valve rod is provided with a second hand wheel in fixed connection.

Preferably, the outer side of the upper part of the valve rod is provided with threads with the length not less than 1/5.

Preferably, the middle part of the upper end of the sealing base is provided with a group of adjusting rods, the adjusting rods are provided with a plurality of groups of threaded holes for bolts to use, the adjusting rods are connected with the sealing base through the threaded holes, and the upper parts of the adjusting rods are in threaded connection with the upper parts of the valve rods.

The utility model discloses a technological effect and advantage: the stop valve rod sealing device is matched with a valve rod for use through an expansion link, a fixed block fixedly connected with the valve rod can seal a pipeline in a valve body for the first time, a valve clack fixedly connected with the expansion link can seal the valve body for the second time, and a rubber ring is sleeved on the valve clack, so that the valve clack is prevented from being eroded by a fast flowing liquid medium in the pipeline, meanwhile, the sealing ring between the valve rod and the expansion link is designed, so that the liquid medium can be effectively prevented from entering the valve rod and the expansion link, the threads in the valve rod and the expansion link are prevented from being eroded, through the design of a sealing base and a limiting block, the limiting block can control the displacement distance of the valve rod when the valve rod moves up and down, meanwhile, the sealing base can play a role in positioning the valve rod, the use effect of the expansion link and the valve rod is, simple structure, easy operation, and the valve clack is difficult to receive the harm.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the structure at the position A of the present invention;

fig. 3 is a side view of the present invention.

In the figure: the valve comprises a valve body 1, a valve rod 2, an expansion rod 3, a sealing ring 4, a sealing base 5, threads 6, a water outlet 7, a rubber ring 8, a gasket 9, a fixing block 10, a hand wheel 11, a hand wheel 12, a water inlet 13, bolts 14, a limiting block 15, a valve clack 16 and an adjusting rod 17.

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.

The utility model provides a stop valve rod sealing device as shown in figures 1-3, which comprises a valve body 1, a valve rod 2, a sealing ring 4, a sealing base 5 and a limiting block 15, wherein a group of water outlets 7 and a group of water inlets 13 are respectively arranged near the bottom end in the valve body 1, the water outlets 7 are communicated with the water inlets 13 through pipelines, a group of sealing base 5 is arranged at the middle part of the upper end of the valve body 1, a plurality of groups of threaded holes for bolts 14 are arranged in the sealing base 5 and the valve body 1, the sealing base 5 is fixedly connected with the valve body 1 through bolts 14, a group of limiting blocks 15 are fixedly connected at one side of the lower end of the sealing base 5 near the valve body 1, the limiting blocks 15 are in sliding connection with the inner wall of the valve body 1, a group of sliding-connected valve rod 2 is arranged in the

sealing base

5, 4 adhesion of sealing ring sets up inside sealing base 5, and sliding connection between sealing ring 4 and the

valve rod

2, 2 lower extremes of valve rod are provided with fixed connection's fixed block 10, be provided with a set of threaded connection's telescopic link 3 in the

valve rod

2, and 6 length of screw threads in the telescopic link 3 are not less than 1/5 of 3 length of telescopic link, telescopic link 3 is provided with a set of sealing ring 4 with 2 lower extreme junctions of valve rod, 4 adhesion of sealing ring set up the lower extreme in the valve rod 2, and be sliding connection between sealing ring 4 and the

telescopic link

3, 3 lower extreme fixedly connected with of telescopic link 16, the lower extreme of valve clack 16 is provided with a set of rubber circle 8, and rubber circle 8 cup joints on valve clack 16.

Specifically, the lower end of the fixing block 10 is adhered with a group of gaskets 9, so that damage to the fixing block 10 is avoided.

Specifically, 2 upper ends of the valve rods are provided with a first hand wheel of fixed connection, and 3 upper ends of the telescopic rods in the valve rods 2 are provided with a second hand wheel of fixed connection, so that the valve rods 2 and the telescopic rods 3 can be better controlled to move up and down.

Specifically, the outer side of the upper part of the valve rod 2 is provided with threads with the length not less than 1/5 of the valve rod 2.

Specifically, 5 upper end middle parts of sealing base are provided with a set of regulation pole 17, set up the screw hole that the multiunit supplied bolt 14 to use on the regulation pole 17, adjust

pole

17 and 5 bolted connection of sealing base through the screw hole, adjust the upper portion and the 2 upper portions threaded connection of valve rod of pole 17, dismantle more convenience, can cooperate valve rod 2 to use simultaneously.

Specifically, when the stop valve rod sealing device is used, a water inlet pipeline needing to convey media is communicated with a water inlet 13 of a valve body 1, a water outlet pipeline is communicated with a water outlet 7 of the valve body 1, then a second hand wheel 12 is adjusted to drive an expansion rod 3 to move, the expansion rod 3 in threaded connection with the valve rod 2 is gradually taken into the valve rod 2 until a valve clack 16 and a rubber ring 8 are partially retained outside, then a first hand wheel 11 is adjusted to control the valve rod 2 to move upwards to drive a fixed block 10 on the valve rod 2 to move together until the fixed block 10 moves below a limiting block 15, at the moment, the valve body 1 is in an open state, when the valve body 1 needs to be closed, the first hand wheel 11 is adjusted to control the fixed block 10 on the valve rod 2 to move until the valve body is in a closed state, then a second hand wheel 12 is adjusted to control the valve clack 16 to move, after the stop valve is used for a long time, the situation of water leakage and the like appears, then bolt 14 on valve body 1 can be dismantled, each part on valve body 1 is checked, if sealing ring 4 appears damaging, then can be corresponding change sealing ring 4, this stop valve stem seal device, simple structure, easy operation, and the valve clack is difficult to receive the harm.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a stop valve rod sealing device, includes valve body (1), valve rod (2), sealing ring (4), seal base (5) and stopper (15), its characterized in that: a group of water outlets (7) and a group of water inlets (13) are respectively arranged in the valve body (1) close to the bottom end, the water outlets (7) are communicated with the water inlets (13) through pipelines, a group of sealing bases (5) are arranged in the middle of the upper end of the valve body (1), a plurality of groups of threaded holes for bolts (14) are formed in the sealing bases (5) and the valve body (1), the sealing bases (5) are fixedly connected with the valve body (1) through the bolts (14), a group of limiting blocks (15) are fixedly connected with one side of the lower end of the sealing base (5) close to the interior of the valve body (1), the limiting blocks (15) are in sliding connection with the inner wall of the valve body (1), a group of valve rods (2) in sliding connection are arranged in the sealing base (5), a group of sealing rings (4) are arranged between the, the sealing ring (4) is arranged inside the sealing base (5) in an adhesion way, and the sealing ring (4) is connected with the valve rod (2) in a sliding way, a fixed block (10) fixedly connected with the lower end of the valve rod (2), a group of telescopic rods (3) connected with threads are arranged in the valve rod (2), and the length of the thread (6) in the telescopic rod (3) is not less than 1/5 of the length of the telescopic rod (3), a group of sealing rings (4) are arranged at the joint of the telescopic rod (3) and the lower end of the valve rod (2), the sealing rings (4) are arranged at the inner lower end of the valve rod (2) in an adhesion manner, the sealing ring (4) is connected with the telescopic rod (3) in a sliding way, the lower end of the telescopic rod (3) is fixedly connected with a group of valve clacks (16), the lower end of the valve clack (16) is provided with a group of rubber rings (8), and the rubber rings (8) are sleeved on the valve clack (16).

2. A stop valve stem seal according to claim 1, wherein: the lower end of the fixing block (10) is provided with a group of gaskets (9) in an adhesion manner.

3. A stop valve stem seal according to claim 1, wherein: the upper end of the valve rod (2) is provided with a first hand wheel fixedly connected, and the upper end of the telescopic rod (3) in the valve rod (2) is provided with a second hand wheel fixedly connected.

4. A stop valve stem seal according to claim 1, wherein: the outer side of the upper part of the valve rod (2) is provided with a thread (6) with the length not less than 1/5 of the valve rod (2).

5. A stop valve stem seal according to claim 4, wherein: the middle part of the upper end of the sealing base (5) is provided with a group of adjusting rods (17), a plurality of groups of threaded holes for bolts (14) to use are formed in the adjusting rods (17), the adjusting rods (17) are connected with the sealing base (5) through the threaded holes in a bolted mode, and the upper portions of the adjusting rods (17) are connected with the upper portions of the valve rods (2) in a threaded mode.