Flow guide cover for conical valve

Abstract

The utility model designs a flow guide cover for a conical valve, which comprises a cover body and a cover body flange fixed at one end part of the cover body, and the radius of a central hole of the cover body flange is greater than the distance from the center of a valve rod of the conical valve to the center of the conical valve; the valve rod is located in a center hole of the flange. A flange hole is formed in the outer side of the cover body flange, and a fastening bolt connected with the sealing flange is installed in the flange hole. A valve rod mounting hole is formed in the sealing flange, a filler sealing sleeve is welded to the outer side of the valve rod mounting hole, and a filler sealing assembly is mounted in the filler sealing sleeve. Installation and maintenance of the conical valve are greatly optimized, operation efficiency of the conical valve is improved, and the service life of the conical valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of the conical valve, especially relates to a fairing for conical valve. BACKGROUND

[0002] In the prior art, the fairing of the conical valve usually comprises a cover plate and a cover plate fixed at one end of the cover plate, please refer to Figure 2 The inner diameter of the cover plate is designed to be smaller than the distance from the center of the valve stem to the center of the conical valve, so as to ensure that the fairing can be tightly installed around the valve stem. A cover plate flange is usually welded on the inner circumference of the cover plate to connect with other parts of the conical valve. The cover plate is also provided with a valve stem mounting hole corresponding to the position of the valve stem, allowing the valve stem to pass through and connect the bushing and the valve stem driving unit.

[0003] However, this traditional installation method of the conical valve fairing has significant defects. During the installation and debugging of the conical valve, especially when the bushing needs to be debugged, the fairing must be removed first, because the inner diameter of the cover plate is smaller than the distance from the valve stem to the valve center, which makes it impossible to debug with the fairing. This means that the operator must complete the debugging of the bushing without the fairing, which not only increases the complexity of the operation, but also may cause errors during the debugging process.

[0004] After debugging, in order to install the fairing, the operator needs to remove the valve stem that has been installed, which not only consumes time and effort, but also may cause potential risks to the sealing of the valve stem and the valve body. After the fairing is installed, the valve stem and the valve stem driving unit need to be reinstalled and debugged, which undoubtedly further increases the installation cost and time cost.

[0005] In summary, the installation method of the conical valve fairing in the prior art has the problems of complex operation, waste of manpower, material resources and time. Therefore, a new type of fairing for conical valve is needed, which can realize the installation of the fairing without disassembling the valve stem, thereby simplifying the installation steps, saving costs and improving efficiency. UTILITY MODEL CONTENTS

[0006] In view of the problems existing in the prior art, the utility model provides a fairing for conical valve, which solves the problem of waste of manpower, material resources and time caused by disassembling the valve stem during installation of the conical valve fairing. The installation steps are minimized, costs are saved, and efficiency is improved.

[0007] The utility model discloses a kind of fairing for conical valve, including cover body and the cover body flange fixed in cover body one end part, the center hole radius of the cover body flange is greater than the distance from the center of conical valve stem to the center of conical valve;The valve stem is located in flange center hole;The outside of the cover body flange is equipped with flange hole, and fastening bolt is mounted in the flange hole and connected with sealing flange;Sealing flange is equipped with valve stem mounting hole, and packing gland is welded on the outside of valve stem mounting hole, and packing gland is mounted in packing gland and is equipped with packing seal assembly.

[0008] Preferably, the cover body flange is welded to the inner wall of the cover body.

[0009] Preferably, the thickness of the cover body flange is 30-120 mm.

[0010] Preferably, the flange hole on the cover body flange is a blind hole.

[0011] The utility model has the advantages and technical effects: the fairing for conical valve of the utility model brings significant technical effects. First, by making the center hole radius of the cover body flange greater than the distance from the center of the conical valve stem to the center of the valve, the valve stem is freely installed without removing the fairing, greatly simplifying the installation and debugging process of the conical valve, saving valuable time and labor costs, and effectively reducing the risk in the installation process. Secondly, the valve stem can freely move axially in the flange center hole, ensuring smooth execution of the opening and closing and adjusting functions of the conical valve. Thirdly, the flange hole on the outside of the cover body flange is tightly connected with the sealing flange through the fastening bolt, combined with the valve stem mounting hole on the sealing flange and the packing gland and sealing assembly on the outside, forming a high-efficiency and reliable sealing system, effectively preventing fluid or impurities from leaking, and significantly improving the sealing performance and long-term operation stability of the conical valve. In summary, the utility model greatly optimizes the installation and maintenance of the conical valve, improves its operation efficiency and service life. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structure schematic diagram of the utility model embodiment

[0013] Figure 2 is a structure schematic diagram of prior art.

[0014] In the figure: 1, cover body; 2, cover body flange; 3, conical valve stem; 4, sealing flange; 5, fastening bolt; 2-1, flange hole; 4-1, valve stem mounting hole; 6, packing gland; 7, packing seal assembly. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with embodiments.

[0016] Please refer to Figure 1 A kind of fairing for conical valve, including cover body 1 and the cover body flange 2 fixed at one end of cover body, the center hole radius of the cover body flange is greater than the distance from the center of conical valve stem 3 to the center of conical valve, this design makes that valve stem can freely pass through the center hole of flange without removing fairing, so that the installation and debugging process of conical valve is greatly simplified.No need to disassemble valve stem can install or disassemble fairing, significantly save time and labor cost, and reduce potential risk in installation process;The valve stem is located in the center hole of flange, so that the valve stem can still be freely axially moved after fairing installation to perform opening or adjusting function;The outer side of the cover body flange is provided with flange hole 2-1, and fastening bolt 5 connected with sealing flange 4 is installed in the flange hole;The sealing flange is provided with valve stem mounting hole 4-1, and packing gland 6 is welded on the outer side of valve stem mounting hole, and packing seal assembly 7 is installed in the packing gland, and valve stem mounting hole allows valve stem to pass through sealing flange, and packing gland provides an additional sealing layer for preventing fluid or impurities from leaking through the gap between valve stem and sealing flange.This design improves the sealing performance of conical valve, and ensures its long-term stable operation.

[0017] Preferably, the cover body flange is welded to the inner wall of the cover body.As the flange is directly welded to the inner wall of the cover body, an integrated structure is formed, which enables the cover body to withstand greater external pressure and impact force.Compared with the traditional cover plate, the cover body flange in this design has a greater thickness, further improving its deformation resistance, ensuring the stability and reliability of the fairing during long-term use.

[0018] Furthermore, increasing the thickness of the cover body flange can significantly improve the overall support strength of the fairing.The thicker flange can more effectively resist external pressure, impact force and fluid power, reducing the risk of deformation and damage.This helps to ensure the stable operation of the fairing under harsh working conditions, prolong its service life, and reduce the cost of maintenance or replacement of the fairing.In actual application, the appropriate thickness of the cover body flange should be determined according to specific factors such as fluid pressure, temperature, material strength and safety requirements.The material of the cover body flange is Q235, and its thickness is 20-30mm.

[0019] Preferably, the flange holes on the cover flange are blind holes. Blind hole design can increase the material thickness of the cover flange around the hole, thereby enhancing the structural strength of the flange. Improve sealing performance: Simplify the installation process: The blind hole design can make the installation process of the fairing more simplified. In some cases, the blind hole can be used as a positioning hole. Prevent internal fluid leakage: The presence of the blind hole can also prevent the internal fluid of the fairing from leaking to the outside environment through the hole. This is particularly important for applications that require the pressure or purity of the fluid inside the fairing to be maintained.

[0020] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fairing for a conical valve comprising a fairing body and a fairing flange fixed to one end of the fairing body, characterised in that: The center hole radius of the cover flange is greater than the distance from the center of the valve stem to the center of the conical valve; the valve stem is located in the center hole of the flange; the outer side of the cover flange is provided with a flange hole, and a fastening bolt connected with a sealing flange is installed in the flange hole; the sealing flange is provided with a valve stem mounting hole, and a packing seal sleeve is welded on the outer side of the valve stem mounting hole, and a packing seal assembly is installed in the packing seal sleeve.

2. The cone valve fairing of claim 1, wherein: The cover flange is welded to the inner wall of the cover.

3. The cone valve fairing of claim 1, wherein: The thickness of the cover flange is 30-120 mm.

4. The cone valve shroud of claim 1, wherein: The flange hole in the cover flange is a blind hole.

Images