CN217301672U

CN217301672U - Gate valve shafting water sealing structure

Info

Publication number: CN217301672U
Application number: CN202220579333.4U
Authority: CN
Inventors: 陈永裁; 陈永煌; 项秀莲; 王志欢; 宋冯欢
Original assignee: Bsg Fluid Technology Co ltd
Current assignee: Bsg Fluid Technology Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-08-26
Anticipated expiration: 2032-03-16

Abstract

The utility model relates to a gate valve technical field discloses a gate valve shafting water-stop seal structure, including gate valve mechanism, gate valve mechanism's upside intermediate position is provided with shafting water-stop seal mechanism, shafting water-stop seal mechanism includes support and sealing washer, the lower extreme in the outside of support is provided with the second ring flange, the upside that the outside of support is located the second ring flange has seted up a set of through-hole, the sealing washer includes rubber packing ring, sealing washer body and expansion ring. The utility model discloses a rivers are poured into to the inlet tube, behind rivers got into the expansion ring, shutoff inlet tube and outlet pipe, rivers get into and make the expansion ring inflation, thereby make the inside shrink of sealing washer body, make valve rod department have better leakproofness, avoid rivers to ooze, can play the cushioning effect through the rubber packing ring, can play limiting displacement to the expansion ring through the spacing ring, use bolt through connection second ring flange and first ring flange, can make the support fixed on gate valve mechanism.

Description

Gate valve shafting water sealing structure

Technical Field

The utility model relates to a gate valve technical field specifically is a gate valve shafting water-stop seal structure.

Background

The gate valve is a shutter, the movement direction of the shutter is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. Gate valves are sealed by the contact of the valve seat and gate plate, and the sealing surface is usually welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate plate is divided into a rigid gate plate and an elastic gate plate according to the difference of the gate plate.

Most of the existing gate valves adopt sealing rings for sealing, and the sealing effect is poor. Accordingly, those skilled in the art have provided a water sealing structure for a gate valve shaft system to solve the above problems in the background art.

Disclosure of Invention

An object of the utility model is to provide a gate valve shafting water-stop seal structure 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:

the utility model provides a gate valve shafting water-stop seal structure, includes gate valve mechanism, gate valve mechanism's upside intermediate position is provided with shafting water-stop seal mechanism, shafting water-stop seal mechanism includes support and sealing washer, the lower extreme in the outside of support is provided with the second ring flange, the outside of support is located the upside of second ring flange and has seted up a set of through-hole, the sealing washer includes rubber packing ring, sealing washer body and expansion ring, the upper and lower both sides of sealing washer body all are provided with the spacing ring, one side of expansion ring is provided with the inlet tube, the opposite side of expansion ring is provided with the outlet pipe.

As a further aspect of the present invention: the support is fixedly connected with the second flange plate, and the through hole is matched with the water inlet pipe.

As a further aspect of the present invention: the through hole is matched with the water outlet pipe, and the rubber gasket is matched with the sealing ring body.

As a further aspect of the present invention: the sealing ring body is fixedly connected with the limiting ring, and the expansion ring is matched with the sealing ring body.

As a further aspect of the present invention: the expansion ring is fixedly connected with the water inlet pipe, and the expansion ring is fixedly connected with the water outlet pipe.

As a further aspect of the present invention: the gate valve mechanism comprises a pipeline and a valve rod, a water inlet is formed in one side of the pipeline, a water outlet is formed in the other side of the pipeline, a first flange plate is arranged on the upper side of the pipeline, a hand wheel is arranged on the upper side of the valve rod, and a flashboard is arranged on the inner side, located on the pipeline, of the lower side of the valve rod.

As a further aspect of the present invention: the pipeline is fixedly connected with the water inlet, and the pipeline is fixedly connected with the water outlet.

As the utility model discloses further scheme again: the pipeline is fixedly connected with the first flange plate, and the valve rod is fixedly connected with the hand wheel.

Compared with the prior art, the beneficial effects of the utility model are that:

1. inject rivers through the inlet tube, rivers get into behind the expansion ring, shutoff inlet tube and outlet pipe, rivers get into and make the expansion ring inflation, thereby make the sealing washer body shrink inwards, make valve rod department have better leakproofness, avoid rivers to ooze, can play the cushioning effect through the rubber packing ring, can play limiting displacement to the expansion ring through the spacing ring, use bolt through connection second ring flange and first ring flange, can be so that the support is fixed on gate valve mechanism, can play the positioning action to the sealing washer through the support, can make things convenient for inlet tube and outlet pipe to pass through the through-hole.

2. The valve rod can be rotated by rotating the hand wheel, the valve rod is rotated to enable the flashboard on the inner side of the pipeline to move up and down, so that the effect of water flow switching is achieved, a worker and a shafting water sealing mechanism can be conveniently fixed through the first flange plate, water can conveniently flow in through the water inlet, and water can conveniently flow out through the water outlet.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

FIG. 1 is a schematic structural diagram of a water sealing structure of a gate valve shafting;

FIG. 2 is an exploded view of a water sealing structure of a gate valve shaft system;

FIG. 3 is a schematic structural view of a shafting water seal mechanism in a gate valve shafting water seal structure;

FIG. 4 is a schematic structural diagram of a seal ring in a water sealing structure of a gate valve shafting;

FIG. 5 is a schematic structural diagram of a gate valve mechanism in a gate valve shafting water sealing structure.

In the figure: 1. a gate valve mechanism; 11. a pipeline; 111. a water inlet; 112. a water outlet; 113. a first flange plate; 12. a valve stem; 121. a hand wheel; 2. a shafting water sealing mechanism; 21. a support; 211. a second flange plate; 212. a through hole; 22. a seal ring; 221. a rubber gasket; 222. a seal ring body; 2221. a limiting ring; 223. an expansion ring; 2231. a water inlet pipe; 2232. and (4) a water outlet pipe.

Detailed Description

The present invention is described in detail with reference to the specific embodiments, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure herein. 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.

Please refer to fig. 1-5, in the embodiment of the present invention, a gate valve shafting water sealing structure, including gate valve mechanism 1, the upside intermediate position of gate valve mechanism 1 is provided with shafting water sealing mechanism 2, shafting water sealing mechanism 2 includes support 21 and sealing washer 22, the lower extreme in the outside of support 21 is provided with second ring flange 211, a set of through-hole 212 has been seted up to the upside that the outside of support 21 is located second ring flange 211, sealing washer 22 includes rubber packing ring 221, sealing washer body 222 and expansion ring 223, the upper and lower both sides of sealing washer body 222 all are provided with spacing ring 2221, one side of expansion ring 223 is provided with inlet tube 2231, the opposite side of expansion ring 223 is provided with outlet pipe 2232.

In fig. 1, 2, 3 and 4: the support 21 is fixedly connected with the second flange plate 211, the through hole 212 is matched with the water inlet pipe 2231, the through hole 212 is matched with the water outlet pipe 2232, the rubber gasket 221 is matched with the sealing ring body 222, the sealing ring body 222 is fixedly connected with the limiting ring 2221, the expansion ring 223 is matched with the sealing ring body 222, the expansion ring 223 is fixedly connected with the water inlet pipe 2231, the expansion ring 223 is fixedly connected with the water outlet pipe 2232, water is injected through the water inlet pipe 2231, after entering the expansion ring 223, the water inlet pipe 2231 and the water outlet pipe 2232 are blocked, the expansion ring 223 expands when the water enters, so that the sealing ring body 222 contracts inwards, the valve rod 12 has better sealing performance, water seepage is avoided, the rubber gasket 221 can play a role in damping, the expansion ring 223 can be limited by the limiting ring 2221, the second flange plate 211 is connected with the first flange plate 113 through bolts, so that the support 21 can be fixed on the gate valve mechanism 1, the support 21 can position the sealing ring 22, and the through hole 212 can facilitate the passage of the water inlet pipe 2231 and the water outlet pipe 2232.

In fig. 1, 2 and 5: gate valve mechanism 1 includes pipeline 11 and valve rod 12, one side of pipeline 11 is provided with water inlet 111, the opposite side of pipeline 11 is provided with delivery port 112, the upside of pipeline 11 is provided with first ring flange 113, the upside of valve rod 12 is provided with hand wheel 121, the downside of valve rod 12 is located the inboard of pipeline 11 and is provided with the flashboard, pipeline 11 and water inlet 111 fixed connection, pipeline 11 and delivery port 112 fixed connection, pipeline 11 and first ring flange 113 fixed connection, valve rod 12 and hand wheel 121 fixed connection, can make valve rod 12 rotate through rotating hand wheel 121, valve rod 12 rotates and makes the inboard flashboard of pipeline 11 reciprocate, thereby reach the effect of switch rivers, can make things convenient for staff and shafting water-tight seal mechanism 2 to fix through first ring flange 113, can make things convenient for rivers to flow into through water inlet 111, can make things convenient for rivers to flow out through delivery port 112.

The utility model discloses a theory of operation: water flow is injected through the water inlet pipe 2231, after the water flow enters the expansion ring 223, the water inlet pipe 2231 and the water outlet pipe 2232 are sealed, the expansion ring 223 is expanded due to the water flow entering, the sealing ring body 222 is enabled to contract inwards, the valve rod 12 is enabled to have better sealing performance, water seepage is avoided, a damping effect can be achieved through the rubber gasket 221, the expansion ring 223 can be limited through the limiting ring 2221, the second flange 211 and the first flange 113 are connected in a penetrating mode through bolts, the support 21 can be fixed on the gate valve mechanism 1, the sealing ring 22 can be positioned through the support 21, the water inlet pipe 2231 and the water outlet pipe 2232 can be conveniently passed through the through hole 212, the valve rod 12 can rotate through rotating the hand wheel 121, the valve rod 12 rotates to enable the flashboards on and off the water flow to move up and down on the inner side of the pipeline 11, and the shafting water flow can be conveniently fixed through the first flange 113 and the shafting water sealing mechanism 2, the water inlet 111 can facilitate the inflow of water, and the water outlet 112 can facilitate the outflow of water.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a gate valve shafting water-stop seal structure, includes gate valve mechanism (1), its characterized in that, the upside intermediate position of gate valve mechanism (1) is provided with shafting water-stop seal mechanism (2), shafting water-stop seal mechanism (2) are including support (21) and sealing washer (22), the lower extreme in the outside of support (21) is provided with second ring flange (211), a set of through-hole (212) have been seted up to the upside that the outside of support (21) is located second ring flange (211), sealing washer (22) are including rubber packing ring (221), sealing washer body (222) and expansion ring (223), the upper and lower both sides of sealing washer body (222) all are provided with spacing ring (2221), one side of expansion ring (223) is provided with inlet tube (2231), the opposite side of expansion ring (223) is provided with outlet pipe (2232).

2. The water sealing structure of the gate valve shafting according to claim 1, wherein the bracket (21) is fixedly connected with the second flange (211), and the through hole (212) is matched with the water inlet pipe (2231).

3. The water sealing structure of the gate valve shafting as claimed in claim 1, wherein said through hole (212) is matched with said water outlet pipe (2232), and said rubber gasket (221) is matched with said sealing ring body (222).

4. The water sealing structure of the shaft system of the gate valve as claimed in claim 1, wherein the sealing ring body (222) is fixedly connected with the limiting ring (2221), and the expansion ring (223) is matched with the sealing ring body (222).

5. The water sealing structure of the shafting of the gate valve as claimed in claim 1, wherein said expansion ring (223) is fixedly connected with the water inlet pipe (2231), and said expansion ring (223) is fixedly connected with the water outlet pipe (2232).

6. The water sealing structure of the gate valve shafting according to claim 1, wherein the gate valve mechanism (1) comprises a pipeline (11) and a valve rod (12), one side of the pipeline (11) is provided with a water inlet (111), the other side of the pipeline (11) is provided with a water outlet (112), the upper side of the pipeline (11) is provided with a first flange (113), the upper side of the valve rod (12) is provided with a hand wheel (121), and the lower side of the valve rod (12) is provided with a gate plate on the inner side of the pipeline (11).

7. The water sealing structure of the gate valve shafting according to claim 6, wherein the pipeline (11) is fixedly connected with the water inlet (111), and the pipeline (11) is fixedly connected with the water outlet (112).

8. The water sealing structure of the gate valve shafting according to claim 6, wherein the pipe (11) is fixedly connected with the first flange (113), and the valve rod (12) is fixedly connected with the hand wheel (121).