CN211231642U - Gate valve with telescopic function - Google Patents

Abstract

The utility model discloses a gate valve with flexible function, including the gate valve body and set up valve rod on the gate valve body, its characterized in that: a sleeve is coaxially sleeved at the inlet at the left end of the gate valve body, the sleeve can move left and right after being sleeved at the inlet at the left end of the gate valve body, an O-shaped sealing ring is arranged between the gate valve body and the wall of the sleeve, and the sleeve and the gate valve body are limited by a limiting device; the limiting device comprises a limiting screw and a nut, the limiting screw is a bolt, a limiting plate is arranged on the brake valve body, the nut is fixed on the sleeve, and the bolt can be screwed with the nut after penetrating through the limiting plate; the gate valve not only has the advantages of low installation, replacement and maintenance cost, but also is more convenient to install and can effectively eliminate the stress generated when the valve expands with heat and contracts with cold.

Description

Gate valve with telescopic function

Technical Field

The utility model relates to a gate valve with flexible function, it belongs to valve technical field.

Background

The opening and closing part of the gate valve is a gate plate, the movement direction of the gate plate is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled; the manufacturers for producing the gate valves in China are more, the connection sizes are mostly not uniform, and the gate valves are mainly classified into a general category which is mainly JB/T2203-1999 Gate valve Structure Length;

the working principle of the manual gate valve is as follows: the hand wheel is rotated, and the valve plate connected with the valve rod is lifted or lowered by advancing and retreating the threads of the hand wheel and the valve rod, so that the opening and closing effects are achieved.

Classified by shell/body material, gate valves can be divided into:

(1) the metal valve can be carbon steel valve, alloy steel valve, stainless steel valve, cast iron valve, titanium alloy valve, Monel valve, copper alloy valve, lead alloy valve, etc.

(2) The metal valve body lining valves, such as rubber lining valves, fluorine lining valves, lead lining valves, plastic lining valves and enamel lining valves.

(3) Non-metal material valves, such as ceramic valves, glass valves, plastic valves.

The gate valve that system used on the water supply pipe network at present all is the hand wheel operation basically, and anybody can open and close at will, and the security is not high, simultaneously, also inconvenient management.

In actual use, the gate valve is generally matched with the expansion piece for use, so that the installation and the replacement are convenient, but the expansion piece needs to be added, so that the installation, the replacement and the maintenance cost are increased; meanwhile, the connection needs to be carried out for several times during installation, and the operation process is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome need add an expansion bend in the installation gate valve among the prior art, lead to the installation, change, the cost of maintenance high, need carry out several times in the dismouting and connect, the loaded down with trivial details shortcoming of operation process provides a gate valve with flexible function, and this gate valve not only has the advantage that installation, change, cost of maintenance are low, and simultaneously, its installation is more convenient, the stress that produces when can effectual elimination valve expend with heat and contract with cold.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the basic idea of the utility model is that:

a built-in gate valve with telescopic and filtering functions comprises a valve body, a sleeve, a limit screw, an O-shaped sealing ring, a rubber plate, a valve rod nut, a valve cover, a gland, a thrust bearing, a dust cover, a special tool, a filter screen, a filter cover and the like; the convex polygon at the upper end of the special tool is inserted into the concave polygon of the dustproof cover at the upper end of the gland, the dustproof cover is screwed down, the concave polygon at the lower end of the special tool is matched with the convex polygon at the upper end of the valve rod to drive the valve rod to rotate, and the valve rod drives the rubber plate to move up and down through the trapezoidal threads of the valve rod nut, so that the valve is opened and closed; wherein, the sleeve connected with the valve body can slide along the outer wall and is sealed by an O-shaped sealing ring, and the sleeve is connected and limited by a limiting screw rod and a nut; a filter screen is arranged in the right cavity of the valve body, a filter cover is arranged on the filter screen and matched with the right cavity of the valve body, and a sealing ring is arranged in the middle of the filter screen and is fixedly connected with the right cavity of the valve body through a bolt; the pressure cover is provided with a concave cavity, the valve rod is arranged in the concave cavity, the upper end of the valve rod is in a polygon shape, a concave polygon matched with the polygon on the upper end of the valve rod is arranged below the special tool, and the special tool drives the valve rod to rotate so as to realize the opening and closing of the valve; the convex polygon at the upper end of the special tool is matched with the concave polygon on the dust cover; the middle of the valve rod is provided with a groove, the width dimension of the groove is consistent with that of the thrust bearing, and the thrust bearing is clamped in the groove and fixed between the valve cover and the gland; a sealing ring is arranged between the valve body and the sleeve, the other ends of the sleeve and the valve body are both connected with flanges, and the sleeve is connected and limited by a limiting screw and a nut; a filter cover is arranged on the filter screen and matched with the right cavity of the valve body, and a sealing ring is arranged in the middle of the filter screen and is fixedly connected with the right cavity of the valve body through a bolt; wherein, one end of the special tool is provided with a concave polygon, and the other end is provided with a convex polygon.

Particularly, the utility model discloses specific scheme is as follows:

the utility model provides a gate valve with flexible function, includes the gate valve body and sets up valve rod on the gate valve body, its characterized in that: the gate valve comprises a gate valve body and is characterized in that a sleeve is coaxially sleeved at an inlet at the left end of the gate valve body, the sleeve can move left and right after being sleeved at the inlet at the left end of the gate valve body, an O-shaped sealing ring is arranged between the gate valve body and the wall of the sleeve, and the sleeve and the gate valve body are limited through a limiting device.

The limiting device comprises a limiting screw and a nut, the limiting screw is a bolt, a limiting plate is arranged on the brake valve body, the nut is fixed on the sleeve, and the bolt can be screwed with the nut after penetrating through the limiting plate.

Further optimize, the valve rod tip is located the concave cavity that the floodgate valve body upper end set up, the valve rod tip is protruding polygon structure, and protruding polygon structure can agree with the specialized tool who is equipped with concave polygon structure.

And the brake valve body is screwed with a dustproof cover for sealing the concave cavity.

The dustproof cover is provided with a concave polygonal structure, and the concave polygonal structure can be matched with a convex polygonal structure at the other end of the special tool.

Further optimize, the floodgate valve body includes the valve body, be equipped with a cavity on the valve body, the cavity carries out the shutoff through the filtration lid of spiro union on the valve body, is located to be equipped with the sealing washer between filtration lid and the valve body, is equipped with a filter screen in the cavity.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a one end at the gate valve body sets up can gliding sleeve pipe to and carry out spacing stop device with the sleeve pipe, can make the gate valve when using, need not add an expansion bend in addition, the gate valve collects valve and expansion bend function in an organic whole, has reduced the cost of installation, change, maintenance, simultaneously, only need in the installation with the other end contact pipe network of sleeve pipe and gate valve can, it is more convenient in the installation, need not carry out several times and connect, promptly: the expansion piece is connected to the pipe network, and the valve is connected to the pipe network;

more importantly, through setting up the sleeve pipe that can slide, stress that produces when can effectual elimination valve expend with heat and contract with cold.

2. The utility model discloses a with the concave cavity of the upper end setting of valve rod in, hide valve rod end portion, simultaneously, set up protruding polygon structure at valve rod end portion, need special specialized tool just to open and close, solved the problem that the gate valve was opened and close at will by the people, its security is higher.

3. The utility model discloses a filter screen that sets up can the filter tube interior medium contain impurity, and installation, manufacturing are convenient, need not install the filter alone again, practice thrift installation maintenance cost.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the special tool of the present invention.

The reference numbers of the valve body 1, the rubber plate 2, the sleeve 3, the limit screw 4, the nut 5, the valve rod nut 6, the O-shaped sealing ring 7, the valve rod 8, the flange gasket 9, the valve cover 10, the hexagon socket head cap screw 11, the thrust bearing 12, the concave cavity 13, the convex polygon structure 14, the pressing cover 15, the dust cap 16, the special tool 17, the concave polygon structure 18, the filter cover 19, the sealing ring 20, the hexagon bolt 21 and the filter screen 22.

Detailed Description

The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The gate valve comprises a valve body 1, a rubber plate 2, a sleeve 3, a limit screw 4, a nut 5, a valve rod nut 6, a valve rod 8, a valve cover 10, a gland 15, a thrust bearing 12, a dust cover 16, a special tool 17 and a filter cover 19;

the brake valve comprises a valve body 1, a valve cover 10 and a gland 15, wherein the valve body 1, the valve cover 10 and the gland 15 are connected to form a brake valve body, a rubber plate 2 is located in the valve body 1, a valve rod 8 is connected with the rubber plate 2 through trapezoidal threads of a valve rod nut 6, the valve cover 10 is connected with the valve body 1 through screws to form a valve cavity, the valve cover 10 is connected with the gland 15 through an inner hexagon screw 11, and the valve rod 8, the valve body 1, the valve cover 10 and the gland 15 are sealed through O-shaped sealing rings 7 to prevent a; the valve rod 8 is connected with the valve cover 10 through the thrust bearing 12, and in actual use, the valve rod 8 drives the rubber plate 2 to move upwards or downwards by rotating the valve rod 8 in a forward rotation or reverse rotation mode, so that the opening and closing of the gate valve are realized.

Further optimize, the inlet of the left end of the gate valve body is coaxially sleeved with a sleeve 3, namely: the gate valve is characterized in that a sleeve 3 is coaxially sleeved at the inlet of the left end of the valve body 1, the sleeve 3 can move left and right after being sleeved at the inlet of the left end of the gate valve body, an O-shaped sealing ring 7 is arranged between the gate valve body and the pipe wall of the sleeve 3, and the sleeve 3 and the gate valve body are limited through a limiting device.

The limiting device comprises a limiting screw rod 4 and a nut 5, the limiting screw rod 4 is a bolt, a limiting plate is arranged on the brake valve body, the nut 5 is fixed on the sleeve 3, and the bolt can be screwed with the nut 5 after penetrating through the limiting plate; thus, the sleeve 3 is limited.

Further optimization, the end part of the valve rod 8 is positioned in a concave cavity 13 arranged at the upper end of the brake valve body, the end part of the valve rod 8 is of a convex polygonal structure 14, and the convex polygonal structure 14 can be matched with a special tool 17 provided with a concave polygonal structure 18; the method comprises the following steps: the concave cavity 13 is arranged on the gland 15, and the convex polygon structure 14 is arranged at the upper end of the valve rod 8.

In actual use, the end of the sleeve 3 and the other end of the valve body 1 are provided with connecting flanges, so that the connecting flanges can be conveniently connected into a pipe network.

Wherein, a middle flange gasket 9 is arranged between the valve cover 10 and the valve body 1.

Example 2

This embodiment is further optimized based on embodiment 1, and in this embodiment, a dust cap 16 for closing the cavity 13 is screwed to the gate valve body.

The method specifically comprises the following steps: the dust cap 16 is screwed on the gland 15, and the cavity 13 on the gland 15 is sealed by the dust cap 16.

Preferably, the dust cover 16 is provided with a concave polygonal structure 18, and the concave polygonal structure 18 can be engaged with the convex polygonal structure 14 at the other end of the special tool 17.

Namely: on the specialized tool 17 for opening and close the gate valve, one end is equipped with concave polygon 18, and one end is equipped with protruding polygon 14, and it can agree with protruding polygon 14 on the valve rod 8 and concave polygon 18 on the shield 16, so realize the purpose of multiple protection, improve valve security performance.

Example 3

This embodiment is further optimized on the basis of embodiment 1 or 2, in this embodiment, be equipped with a cavity on the valve body 1, the cavity carries out the shutoff through the filtration lid 19 of spiro union on the valve body 1, is located to be equipped with sealing washer 20 between filtration lid 19 and the valve body 1, is equipped with a filter screen 22 in the cavity.

The filter cover 19 is connected to the valve body 1 by a hexagon bolt 21.

Claims (2)

1. The utility model provides a gate valve with flexible function, includes the gate valve body and sets up valve rod on the gate valve body, its characterized in that: the gate valve comprises a gate valve body, a sleeve is coaxially sleeved at an inlet at the left end of the gate valve body, the sleeve is sleeved at the inlet at the left end of the gate valve body and can move left and right, an O-shaped sealing ring is arranged between the gate valve body and the pipe wall of the sleeve, the sleeve and the gate valve body are limited through a limiting device, the end part of a valve rod is arranged in a concave cavity formed in the upper end of the gate valve body, the end part of the valve rod is of a convex polygonal structure and can be matched with a special tool with the concave polygonal structure, a dustproof cover used for sealing the concave cavity is connected onto the gate valve body in a threaded mode, and the dustproof cover is provided with the concave polygonal structure and can be matched with the convex polygonal structure at the.

2. A gate valve with a telescopic function according to claim 1, characterized in that: the brake valve comprises a brake valve body, the limiting device comprises a limiting screw and a nut, the limiting screw is a bolt, a limiting plate is arranged on the brake valve body, the nut is fixed on a sleeve, and the bolt can be screwed with the nut after penetrating through the limiting plate.

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