CN213776389U

CN213776389U - Exhaust valve convenient to maintain

Info

Publication number: CN213776389U
Application number: CN202022428456.1U
Authority: CN
Inventors: 曹福鹏
Original assignee: Wuhan Siyuan Ship Corollary Equipment Co ltd
Current assignee: Wuhan Siyuan Ship Corollary Equipment Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-07-23
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a discharge valve convenient to maintain, including valve body, valve rod, compressing tightly piece and sealing member, wherein: a liquid inlet cavity, a connecting cavity, a mounting cavity and a liquid outlet cavity are formed in the valve body, the liquid inlet cavity, the connecting cavity and the liquid outlet cavity are sequentially communicated to form a liquid flow channel, the mounting cavity is communicated with the connecting cavity, the valve body is provided with a cut-off port, and the cut-off port is positioned at one end of the connecting cavity; the sealing member sets up in the installation cavity, and the installation cavity inner wall forms the screw thread, compresses tightly the piece and is the cylindric, and the valve rod outer wall with compress tightly a inner wall threaded connection, the movably jam of valve rod cuts the tang and in order to cut the connection intracavity liquid flow, compress tightly an outer wall and installation cavity inner wall threaded connection to support along the valve rod axial and press the sealing member and make it along the radial deformation of valve rod with sealed valve rod side. The utility model discloses use and compress tightly a fixed sealing member and connect the valve rod simultaneously, simple structure, only need install and remove when installation and dismantlement compress tightly the piece can, very convenient, be convenient for change ageing sealing member.

Description

Exhaust valve convenient to maintain

Technical Field

The utility model relates to a valve technical field for boats and ships, specificly relate to a discharge valve convenient to maintain.

Background

The marine valve is a device for controlling the pressure, flow and flow direction of fluid in a pipeline of a ship in order to meet the environmental conditions of the ship. The valve is a control device of a fluid pipeline, and the basic functions of the valve are to connect or cut off the circulation of pipeline media, change the circulation of the media, change the flowing direction of the media, adjust the pressure and the flow of the media and protect the normal operation of equipment of the pipeline.

The valve usually needs to use the packing to fill the gap between the valve rod and the valve body to ensure the sealing performance of the whole valve and prevent the liquid in the pipeline from leaking when flowing to the valve, the packing is generally made of elastic materials, such as plastics, rubber and the like, and is influenced by factors such as media, time and the like, the packing for sealing is aged to cause the reduction of the sealing performance of the valve, and the liquid leakage inevitably occurs, so that the regular maintenance and the replacement of the packing are needed.

However, the existing valve has a complicated structure, is troublesome to assemble and disassemble, and is not beneficial to replace the sealing material in the valve, so that a valve which is convenient to assemble and disassemble and easy to maintain is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide a discharge valve convenient to maintain for solve among the prior art problem that the valve was installed and removed trouble.

In order to achieve the technical purpose, the technical proposal of the utility model is as follows: a vent valve convenient for maintenance, comprising a valve body, a valve stem, a compression member, and a seal, wherein: a liquid inlet cavity, a connecting cavity, a mounting cavity and a liquid outlet cavity are formed in the valve body, the liquid inlet cavity, the connecting cavity and the liquid outlet cavity are sequentially communicated to form a liquid flow channel, the mounting cavity is communicated with the connecting cavity, the valve body is provided with a cut-off port, and the cut-off port is positioned at one end of the connecting cavity; the sealing member sets up in the installation cavity, and the installation cavity inner wall forms the screw thread, and compresses tightly the piece and be the cylindric, and the inside and outside wall all forms the screw thread, and valve rod one end outer wall forms the screw thread, and the valve rod outer wall with compress tightly an inner wall threaded connection, the movably shutoff mouth that blocks up of valve rod is in order to cut the connection intracavity liquid and flow, compress tightly an outer wall and installation cavity inner wall threaded connection to support along the valve rod axial and press the sealing member to make it radially warp in order to seal the valve rod side along the valve rod.

Preferably, the valve rod extends outwards along the radial direction to form a limiting part, one side, close to the sealing element, of the inner wall of the pressing piece is sunken outwards along the radial direction to form a step, and the pressing piece abuts against the limiting part to limit the valve rod axially.

Preferably, the valve further comprises a locking nut, the locking nut is in threaded connection with the outer wall of the pressing piece, and one end face of the locking nut abuts against the valve body.

Preferably, the sealing element comprises a packing and a sealing ring, the packing is cylindrical, and the sealing ring is embedded in the inner wall and the outer wall.

Preferably, the valve further comprises a handle, and the handle is fixedly connected with one end, far away from the valve body, of the valve rod.

Preferably, the end of the valve stem abutting against the stop opening is tapered.

Compared with the prior art, the beneficial effects of the utility model include: the valve rod is connected to the fixed sealing element of the pressing piece, the structure is simple, the pressing piece only needs to be assembled and disassembled during installation and disassembly, and the pressing piece is very convenient to replace the aged sealing piece.

Drawings

Fig. 1 is a perspective view of a valve provided by the present invention;

fig. 2 is a cross-sectional view of a valve provided by the present invention;

reference numerals: 1-valve body, 2-valve rod, 3-pressing piece, 4-sealing piece, 5-locking nut, 6-handle, 11-liquid inlet cavity, 12-connecting cavity, 13-mounting cavity, 14-liquid outlet cavity, 15-stop opening, 21-limiting part, 41-filler and 42-sealing ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and fig. 2, the present embodiment provides a vent valve convenient for maintenance, which includes a valve body 1, a valve rod 2, a pressing member 3, and a sealing member 4, wherein:

the valve body 1 is internally provided with a liquid inlet cavity 11, a connecting cavity 12, a mounting cavity 13 and a liquid outlet cavity 14, the liquid inlet cavity 11, the connecting cavity 12 and the liquid outlet cavity 14 are sequentially communicated and form a liquid flow channel, the mounting cavity 13 is communicated with the connecting cavity 12, the valve body 1 is provided with a stop opening 15, the stop opening 15 is positioned at one end of the connecting cavity 12, the valve in the embodiment adopts a pipeline form of 'low inlet and high outlet', and the skilled person in the art can understand that the valve structure can also be applied to a structure of 'high inlet and low outlet', no matter which structure form, the stop opening 15 is positioned in the connecting cavity 12, and all fluids flow through the stop opening 15.

Sealing member 4 sets up in

installation cavity

13, and 13 inner walls of installation cavity form the screw thread, and it is the cylindric to compress tightly piece 3, and the interior outer wall all forms the screw thread, and 2 one end outer walls of valve rod form the screw thread, and 2 outer walls of valve rod with compress tightly 3 inner wall threaded connection, the movably jam of valve rod 2 cuts the tang 15 and flows in order to cut connecting chamber 12 interior liquid, and valve rod 2 supports to press the one end of cutting tang 15 and is the toper, can improve the leakproofness. Compress tightly 3 outer walls and 13 inner wall threaded connection of installation cavity to support along valve rod 2 axial and press sealing member 4 and make it radially warp in order to seal valve rod 2 side along valve rod 2, particularly, sealing member 4 includes filler 41 and sealing washer 42, filler 41 is the cylindric, fill in installation cavity 13, and inner wall and outer wall all inlay and be equipped with sealing washer 42, can extrude sealing washer 42 when filler 41 warp and make it support tight valve rod 2 and valve body 1, the filler adopts polytetrafluoroethylene to make in this embodiment, it makes to fix fine rubber in the sealing washer adoption. It will be readily understood that the flow rate of the valve is dependent on the minimum cross-sectional area during the flow, the liquid is flowing through the end of the valve stem 2 against which it is pressed, and the distance between the valve stem 2 and the stop 15 is adjustable, so that the flow rate can be adjusted by adjusting the distance between the valve stem 2 and the stop 15.

As a preferred embodiment, the valve rod 2 extends outwards along the radial direction to form a limiting part 21, and one side of the inner wall of the pressing piece 3 close to the sealing piece 4 is outwards recessed along the radial direction and forms a step to abut against the limiting part 21 so as to axially limit the valve rod 2. Therefore, when the valve rod 2 is screwed to the limit part 21 to abut against the step, the valve rod 2 can not be screwed any more.

As a preferred embodiment, the valve further comprises a locking nut 5, wherein the locking nut 5 is in threaded connection with the outer wall of the pressing piece 3, and one end face of the locking nut abuts against the valve body 1. The function of the locking nut 5 is to give the pressure member 3 a force away from the valve body 1 to lock the pressure member 3.

In a preferred embodiment, the valve further comprises a handle 6, and the handle 6 is fixedly connected with one end of the valve rod 2 far away from the valve body 1. The handle 6 can facilitate the operator to twist the valve rod 2.

The assembling process of the valve provided by the present invention is specifically explained below; firstly, the sealing element 4 is installed in the valve body 1, the valve rod 2 penetrates into the pressing element 3 from one side with a step and is rotated to the limit part 21 to be abutted against the step, then the locking nut 5 is screwed into the outer side of the pressing element 3, then the pressing element 3 is screwed into the valve body 1, the pressing element 3 presses the sealing element 4, finally the locking nut 5 is rotated to fix the pressing element 3, and finally the handle 6 is connected to the other end of the valve rod 2. The reverse operation is performed according to the above steps when the seal 4 needs to be removed and replaced.

To sum up, the utility model provides a pair of discharge valve convenient to maintain uses to compress tightly a fixed sealing member and connects the valve rod simultaneously, simple structure, only need install and remove when installation and dismantlement compress tightly the piece can, very convenient, be convenient for change ageing sealing member.

The above detailed description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a discharge valve convenient to maintain which characterized in that, includes valve body, valve rod, compresses tightly piece and sealing member, wherein:

a liquid inlet cavity, a connecting cavity, a mounting cavity and a liquid outlet cavity are formed in the valve body, the liquid inlet cavity, the connecting cavity and the liquid outlet cavity are sequentially communicated to form a liquid flow channel, the mounting cavity is communicated with the connecting cavity, the valve body is provided with a cut-off port, and the cut-off port is positioned at one end of the connecting cavity;

the sealing member set up in the installation intracavity, the installation intracavity wall forms the screw thread, compress tightly the piece and be the cylindric, and the inner and outer wall all forms the screw thread, valve rod one end outer wall forms the screw thread, the valve rod outer wall with compress tightly a wall threaded connection, the movably jam of valve rod cut-off mouth is in order to cut connect intracavity liquid flow, compress tightly a wall with installation intracavity wall threaded connection to along the valve rod axial supports presses the sealing member makes it warp in order to seal along the valve rod radial.

2. The vent valve for facilitating maintenance according to claim 1, wherein the valve stem extends radially outward to form a limiting portion, and a side of the inner wall of the pressing member adjacent to the sealing member is recessed radially outward to form a step, and abuts against the limiting portion to axially limit the valve stem.

3. The exhaust valve convenient to maintain according to claim 1, further comprising a locking nut, wherein the locking nut is in threaded connection with the outer wall of the pressing member, and one end face of the locking nut abuts against the valve body.

4. The exhaust valve convenient to maintain according to claim 1, wherein the sealing element comprises a packing and a sealing ring, the packing is cylindrical and is filled in the installation cavity, and the sealing ring is embedded in the inner wall and the outer wall of the packing.

5. The vent valve convenient to maintain according to claim 1, further comprising a handle fixedly connected to an end of the valve stem remote from the valve body.

6. A maintenance friendly vent valve in accordance with claim 1 wherein said valve stem tapers at one end against said stop.