CN213839803U

CN213839803U - Valve rod sleeve

Info

Publication number: CN213839803U
Application number: CN202022807639.4U
Authority: CN
Inventors: 黄云聪; 周洪友; 刘继明
Original assignee: Deyang Kerun Power Station Complete Equipment Co ltd
Current assignee: Deyang Kerun Power Station Complete Equipment Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-30
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a valve rod sleeve, which relates to the technical field of valve rods and solves the technical problems that in the prior valve rod sleeve, the sleeve can have rusty threads after being used for a period of time, the disassembly is inconvenient and the replacement of a seal sleeve between an end cap and the sleeve is more troublesome; the utility model discloses a valve rod sleeve adopts the combination end cap to carry out the shutoff to sheathed tube cylindricality hole, easy dismounting, and can effectively prevent the medium to the impact and the corruption of valve rod, sets up half ring channel respectively in the below of single end cap lid, realizes through half ring channel and wherein sealing washer that combination end cap and cylindricality hole combine closely.

Description

Valve rod sleeve

Technical Field

The utility model relates to a valve rod technical field, more specifically relates to a valve rod sleeve.

Background

The valve rod is an important part of the valve and has a transmission function, and the valve rod is connected with an actuating mechanism or a handle, and the lower part of the valve rod directly drives the valve core to move or rotate so as to realize the opening and closing or adjusting function of the valve.

The valve rod is not only a moving part, a stress part or a sealing part in the opening and closing process of the valve, so that the normally used valve rod is required to have enough strength, good impact toughness, scratch resistance, corrosion resistance and the like at a certain temperature; meanwhile, in order to prevent the valve rod from being damaged, impacted and corroded by media, and generating friction with packing, it is very common to sleeve a valve rod sleeve at the periphery of the valve rod for protecting the valve rod.

However, in the valve rod sleeve used at present, the plug and the sleeve are fixed on the valve rod through threaded connection, the threads rust after the valve rod sleeve is used for a period of time, the disassembly is inconvenient, and the seal sleeve between the plug and the sleeve is used for a period of time and then is troublesome to replace.

Therefore, the utility model provides a valve stem sleeve to above problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: can appear the screw thread after using a period in order to solve among the current valve stem sleeve pipe rust, dismantle inconvenient and the seal cover between end cap and the sleeve pipe changes more troublesome problem, the utility model provides a valve stem sleeve pipe.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a valve rod sleeve, which comprises a sleeve, a combination end cap for shutoff column hole, be provided with the external screw thread of being connected with the gear box in the sleeve bottom, be provided with column arch on the sleeve top, column hole has been seted up in the bellied axle center of column, the axle center of combination end cap is equipped with the valve rod hole that supplies the valve rod to pass, telescopic bottom and the position department that is located the external screw thread top are provided with the flange, and set up the ring channel in the lower part of flange, be equipped with the sealing washer in the ring channel, wherein, the combination end cap includes first end cap and second end cap, first end cap and second end cap are semi-cylindrical, and first semi-cylindrical recess and second semi-cylindrical recess have been seted up respectively along the axle center to first end cap and second end cap, first semi-cylindrical recess and the closed formation of second semi-cylindrical recess valve rod hole.

The first plug comprises a first cover body, a first cylinder and a first sealing element, the first cylinder and the first cover body are integrally formed, the first sealing element is arranged on the end face of the bottom end of the first cylinder, a first semi-annular groove is formed below the first cover body, and a sealing ring is arranged in the first semi-annular groove; the first sealing element comprises a first bonding layer and a first sealing layer, and the first sealing layer is fixed with the first cylinder through the first bonding layer.

Above-mentioned, the second end cap includes second lid, second cylinder and second sealing member, second cylinder and second lid integrated into one piece, and the second sealing member is established on the terminal surface of second cylinder bottom, and the half ring channel of second has been seted up to the below of second lid, is equipped with the sealing washer in the half ring channel of second, and wherein, the second sealing member includes second adhesive linkage and second sealing layer, and the second sealing layer passes through the second adhesive linkage and is fixed with first cylinder.

The utility model has the advantages as follows:

the utility model relates to a valve rod sleeve, which adopts a combined plug to plug the cylindrical hole of the sleeve, is convenient to disassemble and assemble, can effectively prevent the impact and corrosion of media to a valve rod, is respectively provided with a semi-annular groove below a single plug cover body, and realizes the tight combination of the combined plug and the cylindrical hole through the semi-annular groove and a sealing ring therein;

the utility model relates to a valve rod sleeve pipe utilizes the adhesive linkage to bond the sealing layer on the bottom terminal surface of single end cap, when needing to be changed the sealing layer, can take out the end cap, changes the sealing layer, and easy operation is swift.

Drawings

Fig. 1 is a schematic sectional view of a valve stem sleeve according to the present invention;

fig. 2 is a schematic top view of the valve stem sleeve assembly plug of the present invention;

fig. 3 is a schematic cross-sectional view of a first plug of a valve stem sleeve according to the present invention;

fig. 4 is a schematic cross-sectional view of a second plug of a valve stem sleeve according to the present invention;

reference numerals: 11-external thread; 12-an annular groove; 13-a flange; 14-a sleeve; 15-bulge; 16-a first plug; 17-a valve stem bore; 18-a second plug; 19-cylindrical pores; 20-a valve stem; 161-a first cover; 162-a first semi-annular groove; 163-first cylinder; 164-a first adhesive layer; 165-a first sealing layer; 181-a second cover; 182-a second half annular groove; 183-second cylinder; 184-a second adhesive layer; 185-second sealing layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

Examples

As shown in fig. 1 and 2, a valve stem sleeve comprises a sleeve 14 and a combined plug for plugging the cylindrical hole 19, wherein an external thread 11 connected with a gear box is arranged at the bottom end of the sleeve 14, a cylindrical protrusion 15 is arranged at the top end of the sleeve 14, the cylindrical hole 19 is arranged at the axis of the cylindrical protrusion 15, a valve stem hole 17 for a valve stem 20 to pass through is arranged at the axis of the combined plug, a flange 13 is arranged at the bottom end of the sleeve 14 and above the external thread 11, an annular groove 12 is arranged at the lower part of the flange 13, a sealing ring is arranged in the annular groove 12, wherein the combined plug comprises a first plug 16 and a second plug 18, the first plug 16 and the second plug 18 are closed and placed in the cylindrical hole 19, the first plug 16 and the second plug 18 are semi-cylindrical, and the first plug 16 and the second plug 18 are respectively provided with a first semi-cylindrical groove and a second semi-cylindrical groove along the axis, the first and second semi-cylindrical recesses are closed to form a stem bore 17.

The utility model relates to a valve rod sleeve pipe, the first end cap 16 by two semi-cylindrical and the second end cap 18 closure forms the combination end cap respectively, and first semi-cylindrical recess and second semi-cylindrical recess have been seted up respectively along the axle center to first end cap 16 and second end cap 18, can form valve rod hole 17 in the axle center of combination end cap, so that valve rod 20 passes, first end cap 16 and second end cap 18 can take out respectively, do not need whole to slide along 20 length direction of valve rod and just can take out or the shutoff, the dismouting is very convenient, swiftly.

As shown in fig. 3, the first plug 16 includes a first cover 161, a first cylinder 163 and a first sealing member, the first cylinder 163 and the first cover 161 are integrally formed, the first sealing member is disposed on an end surface of a bottom end of the first cylinder 163, a first semi-annular groove 162 is disposed below the first cover 161, a sealing ring is disposed in the first semi-annular groove 162, the first sealing member includes a first adhesive layer 164 and a first sealing layer 165, and the first sealing layer 165 is fixed to the first cylinder 163 through the first adhesive layer 164.

As shown in fig. 4, the second plug 18 includes a second cover 181, a second cylinder 183, and a second sealing element, the second cylinder 183 is integrally formed with the second cover 181, the second sealing element is disposed on an end surface of a bottom end of the second cylinder 183, a second half annular groove 182 is disposed below the second cover 181, a sealing ring is disposed in the second half annular groove 182, the second sealing element includes a second adhesive layer 184 and a second sealing layer 185, and the second sealing layer 185 is fixed to the second cylinder 183 through the second adhesive layer 184.

The utility model relates to a sealing washer that uses in first half ring channel 162, second half ring channel 182 and the ring channel 12 among the valve stem sleeve pipe is the rubber circle, and the rubber circle has better elasticity and leakproofness, long service life.

The utility model relates to an among the valve stem sleeve pipe, utilize first adhesive linkage 164, second adhesive linkage 184 respectively to bond first sealing layer 165, second sealing layer 185 on the terminal surface of first cylinder 163 and second cylinder 183 bottom, in the use, if need change first sealing layer 165 or second sealing layer 185, can directly take out first end cap 16 or second end cap 18 and change, and is swift convenient, and the cost is lower.

Claims

1. The utility model provides a valve rod sleeve, includes sleeve (14), is provided with external screw thread (11) be connected with the gear box in sleeve (14) bottom, is provided with column arch (15) on sleeve (14) top, has seted up cylindricality hole (19) at the axle center of column arch (15), its characterized in that, still including being used for the shutoff the combination end cap in cylindricality hole (19), the axle center of combination end cap is equipped with valve rod hole (17) that supply valve rod (20) to pass.

2. The valve stem sleeve as claimed in claim 1, wherein the combined plug comprises a first plug (16) and a second plug (18), the first plug (16) and the second plug (18) are closed and placed in the cylindrical hole (19), the first plug (16) and the second plug (18) are semi-cylindrical, the first plug (16) and the second plug (18) are respectively provided with a first semi-cylindrical groove and a second semi-cylindrical groove along the axial center, and the first semi-cylindrical groove and the second semi-cylindrical groove are closed to form the valve stem hole (17).

3. The valve stem sleeve of claim 2, wherein the first plug (16) comprises a first cover (161), a first cylinder (163) and a first sealing element, the first cylinder (163) and the first cover (161) are integrally formed, the first sealing element is arranged on an end face of the bottom end of the first cylinder (163), a first semi-annular groove (162) is formed below the first cover (161), and a sealing ring is arranged in the first semi-annular groove (162).

4. A valve stem sleeve as defined in claim 3, wherein the first seal comprises a first adhesive layer (164) and a first sealant layer (165), the first sealant layer (165) being secured to the first post (163) by the first adhesive layer (164).

5. The valve stem sleeve according to claim 2, wherein the second plug (18) comprises a second cover body (181), a second cylinder body (183) and a second sealing element, the second cylinder body (183) and the second cover body (181) are integrally formed, the second sealing element is arranged on the end face of the bottom end of the second cylinder body (183), a second semi-annular groove (182) is formed below the second cover body (181), and a sealing ring is arranged in the second semi-annular groove (182).

6. The valve stem sleeve of claim 5, wherein said second seal comprises a second adhesive layer (184) and a second sealant layer (185), said second sealant layer (185) being secured to said second post (183) by said second adhesive layer (184).

7. A valve stem sleeve according to claim 1, wherein a flange (13) is provided at a position above the external thread (11) at the bottom end of the sleeve (14), and an annular groove (12) is opened at a lower portion of the flange (13), and a seal ring is provided in the annular groove (12).