KR20120007162U - Teflon lined butterfly valve - Google Patents

Abstract

The present invention relates to a valve having an improved coupling structure to improve the quality and durability of the valve by preventing the flow and departure of the valve seat against the operation of the disk and the fluid pressure, the upper body and the lower body The valve body which is divided into two parts and disassembled and assembled by bolts, and the stem hole to the upper and lower sides of the valve body to form a stem protruding to the upper and lower sides of the disk with Teflon attached to the surface, and the valve body The inner diameter of the ring is connected to the teflon of the disk and the ring-shaped valve seat is coupled to maintain the airtight and chemical resistance, the valve seat is made of a rubber material to maintain the shape and elasticity and increase the bonding force with the valve body A seat body provided and a teflon attached to an outer surface of the seat body may correspond to a fluid having chemical properties. In teflon grinder butterfly valve for locking configuration;
Forming a seating recess recessed in a ring shape on both sides of the inner diameter surface of the valve body such that the seating rims protruding in a ring shape are coupled to both sides of the valve seat;
On both ends of the inner diameter surface of the valve body is formed a retaining rim projecting in a ring shape toward the center of the flow path axis of the valve body, and the retaining rim is formed with a rim groove recessed in a ring shape between the outer diameter seating rim of the valve seat It is characterized by being configured to be combined with each other.

Description

Teflon liner butterfly valve {TEFLON LINED BUTTERFLY VALVE}

The present invention relates to a Teflon liner butterfly valve, and more particularly, to prevent damage and airtightness while facilitating the coupling of a valve seat having corrosion resistance to the valve body when installing the valve in a fluid distribution place having chemical properties. To provide an improved coupling structure.

Various types of valves used for controlling the flow of a fluid such as a liquid or a gas have been developed and used. Among them, a butterfly valve is widely used due to its ability to appropriately control the flow rate of a fluid.

In recent years, acid and alkaline chemicals are often used among the fluids. In this case, high corrosion resistance is required. However, since most of the valves are made of metal, the fluids that are easily corroded and leaked are frequently leaked. It is followed.

Valves installed in lines carrying fluids such as highly corrosive chemicals are coated with Teflon or Teflon Lined on the surface of the disk and valve seat to increase corrosion resistance. The situation is to provide a butterfly valve of the type.

Looking at the configuration of the prior art coupling the valve seat to the valve body in order to increase the corrosion resistance as described above as follows.

The coupling structure of the valve body and the valve seat to which the prior art is applied has a ring-shaped locking jaw 2 having a roughly b-shape on both sides of the inner diameter surface of the valve body 1 to which the disk is connected. Both sides of the outer diameter surface of the valve seat 3 is formed to be coupled to each other by forming a roughly a-shaped locking projection (4) that can be combined with the locking projection (2).

In the prior art as described above, when the valve seat is coupled to the valve body, both sides of the valve seat are coupled to each other in an open state, and thus, when the valve seat is excessively deformed during the joining process, it is difficult to maintain the position after the engagement. Since the valve body is not able to maintain close contact or coupling in a close state, it becomes a cause of failing to normally perform airtightness and fluid flow control which are the basic purposes of the valve.

In addition, the valve seat may move away from the valve body due to the movement of the disk in the process of opening and closing the disk in order to control the flow rate of the fluid in a state in which the valve seat and the valve body are coupled. The stability of the will be poor.

This is because the disk seat is in close contact with the valve seat in the process of opening and closing to control the flow rate of the fluid, the valve seat is to move in the direction of movement of the disk occurs.

In particular, since the valve seat and the valve body are located at both sides, the inner diameter of the valve seat that is actually connected to the disk is simply in contact with the inner diameter of the valve body, and thus has no function or function to hold the disk. In many cases, the inner diameter of the valve seat connected to the disk is often moved together, so the operation stability is remarkably insufficient.

In addition, high pressure is generated when the disk is coupled to the valve seat or in the direction in which the fluid moves. In this process, a force is moved from one direction of the valve seat to another, and the movement of the force Since the valve seat is not prevented from being peeled off in any one direction by stopping or blocking in the middle, various problems occur such as deterioration of assembly.

Therefore, the present invention has been devised to solve the above problems, the valve body is divided into upper body and the lower body and disassembled and assembled into bolts, and the upper and lower sides of the valve body of the disk having Teflon attached to the surface A stem hole formed to couple the stem protruding upward and downward, and an inner diameter surface of the valve body connected to the teflon of the disc to be connected to maintain a gas tightness and chemical resistance, and the valve The seat is formed of a rubber material so as to maintain the shape and increase the bonding force with the valve body, and Teflon is configured to cope with a fluid having chemical properties by attaching Teflon to the outer surface of the seat body A liner butterfly valve, comprising:

Forming a seating recess recessed in a ring shape on both sides of the inner diameter surface of the valve body such that the seating rims protruding in a ring shape are coupled to both sides of the valve seat;

On both ends of the inner diameter surface of the valve body is formed a retaining rim protruding in a ring shape toward the center of the flow path axis of the valve body, and the retaining rim is formed between the outer diameter seating rim of the valve seat to form a rim groove recessed in a ring shape It is possible to achieve the purpose of improving the quality and durability of the valve by being coupled to each other to prevent the flow and departure of the valve seat against the operation and fluid pressure of the disk.

The present invention improves the coupling structure between the valve body and the valve seat to enable easy coupling while minimizing the deformation of the valve seat during the coupling process, as well as conduction from the operating force or fluid generated during the operation of the disk after the coupling. It is an invention having various effects such as to improve the quality and durability of the valve by excluding the phenomenon that the valve seat is deformed or released by pressure.

Figure 1 is an exploded perspective view of the Teflon liner butterfly valve shown to explain the present invention.
Figure 2 is a perspective view of the broken state showing the coupled state of the valve seat and the valve body to which the technique of the present invention is applied.
Figure 3 is a cross-sectional view showing a coupling state of the valve seat and the valve body to which the technology of the present invention is applied.
Figure 4 is a cross-sectional view showing a coupling state of the valve seat and the valve body to which the prior art is applied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

Figure 1 is an exploded perspective view of the Teflon liner butterfly valve shown in order to explain the present invention, Figure 2 is a fractured state perspective view showing a coupled state of the valve seat and the valve body to which the technique of the present invention is applied, Figure 3 The combined state of the valve seat and the valve body to which the technique is applied will be described together as a cross-sectional view.

The Teflon liner butterfly valve 100 capable of responding to a fluid having chemical properties is provided with a valve body 105 that is divided into an upper body 101 and a lower body 102 and disassembled and assembled by a bolt 103. do.

The stem body 106 is formed on the upper and lower sides of the valve body 105 to couple the stem 109 protruding upward and downward of the disk 108 having the Teflon 107 attached to the surface thereof. The inner diameter surface of the body 105 is connected to the Teflon 107 of the disk 108 to couple the valve seat 110 of the ring shape to maintain the airtight and chemical resistance.

The valve seat 110 is configured by attaching the Teflon 112 to the outer surface of the seat body 111 is provided with a rubber material to maintain the seat shape and to increase the bonding force with the valve body 105 while having elasticity.

The present invention is characterized in that to prevent the departure or damage of the valve seat 110 in the process of operation while improving the coupling structure by improving the coupling structure of the valve body 105 and the valve seat 110.

The mounting groove 116 is formed to protrude in a ring shape on both sides of the valve seat 110 by forming a seating recess 115 recessed in a ring shape on both sides of the inner diameter surface of the valve body 105. Be sure to

On both ends of the inner diameter surface of the valve body 105, a retaining rim 117 is formed to protrude in a ring shape toward the center of the flow path axis of the valve body 105, and the retaining rim 117 of the valve seat 110 By forming a rim groove 118 concave in a ring shape between the outer surface seating rim 116 and configured to be coupled to each other, it is possible to prevent the fluidity of the valve seat 110 against the operation of the disk 102 and the movement of the fluid. Make sure

The spacing B between the retaining rim 117 and the retaining rim 117 and the rim groove 118 and the rim groove 118 is the width that is in contact with the outer surface of the disk 102 coupled to the flow path hole of the valve body 105 Having a wider gap than B1 may prevent interference by the retaining rim 117 and the rim groove 118 during the operation of the disc 102.

The process of coupling the valve seat 110 to the valve 100 to which the technology of the present invention is applied as described above and the operating state of the valve seat 110 are as follows.

When the valve seat 110 is to be coupled to the valve body 105, press the outer surface of the valve seat 110 to reduce the diameter to enter the flow path of the valve body 105, and then release the valve seat 110 that is being pressed. The valve seat 110 may be restored to a circular shape by the elasticity of the seat body 111 made of a rubber material constituting the valve seat 110.

As another example, the upper and lower bodies 101 and 102 constituting the valve body 105 are separated, and then the valve seat 110 is positioned at the inner diameter of the valve body 105 and the separated upper and lower bodies 101 and 102 are separated. It may be combined again.

By coupling the valve seat 110 to the valve body 105 as described above, the seating rim 116 formed on both sides of the valve seat 110 is in close contact with the seating groove 115 of the valve body 105, and the valve The holding rims 117 formed at both ends of the inner diameter surface of the body 105 may be naturally coupled to the rim groove 118 formed in the valve seat 110.

That is, the valve seat 110 is positioned in the flow path hole of the valve body 105 without engaging the valve body 105 in the same direction as the moving direction of the fluid. As the diameter of the 110 is enlarged, the seating rim 116 is naturally coupled to the seating groove 115, and at the same time, the retaining rim 117 and the rim groove 118 are coupled, thereby providing excellent assembly.

In addition, after the valve seat 110 is coupled to the valve body 105, the disk 102 and the valve seat 110 are connected in the process of operating the disk 102 to couple the disk 102 or to control the fluid. Even if it is possible to prevent the phenomenon such as the valve seat 110 is easily separated or separated from the valve body 105 by the operating force of the disk 102.

This means that the moving pressure of the fluid or the operating pressure ← of the disk 102 acts in the axial center direction of the valve seat 110, and this force is coupled to the seating groove 115 formed in the valve body 105. The holding rim 117 and the rim groove 118 which are primarily prevented by the seating rim 116 of the valve seat 110 and formed on both inner diameter surfaces of the valve body 105 and the outer diameter surface of the valve seat 110. ) Is coupled to the valve seat 110 is to prevent the phenomenon such as sliding along the inner diameter surface of the valve body (105).

In particular, since the disk 102 is located in the space between the retaining rim 117 and the rim groove 118, even if a force pushing the valve seat 110 in the left and right directions during the operation of the disk 102 occurs. The retaining rim 117 and the rim groove 118 prevent the valve body 105 and the valve seat 110 from slipping or falling off.

The present invention facilitates the coupling of the valve seat and prevents the valve seat from sliding or escaping from the valve body by the pressure of the fluid or the operating force of the disk after the coupling, thereby ensuring stable operation while maintaining airtightness. Has the advantage of.

100; valve
105; Valve body
110; Valve seat
115; Seat groove
116; Restroom
117; Yuji Rim
118; Ring groove

Claims (1)

A valve body divided into upper bodies and lower bodies and disassembled and assembled into bolts;
A stem hole formed at an upper side and a lower side of the valve body so as to couple a stem projecting upward and downward of a disk having Teflon attached to a surface thereof;
An inner diameter surface of the valve body is connected to the teflon of the disk and the valve seat of the ring-type coupled to maintain the airtight and chemical resistance;
The valve seat and the seat body is provided with a rubber material to maintain the shape and increase the coupling force with the valve body while having elasticity;
A teflon liner butterfly valve configured to attach a teflon to an outer surface of the seat body to correspond to a fluid having chemical properties;
Forming a seating recess recessed in a ring shape on both sides of the inner diameter surface of the valve body such that the seating rims protruding in a ring shape are coupled to both sides of the valve seat;
On both ends of the inner diameter surface of the valve body is formed a retaining rim protruding in a ring shape toward the center of the flow path axis of the valve body, and the retaining rim is formed between the outer diameter seating rim of the valve seat to form a rim groove recessed in a ring shape Teflon liner butterfly valve characterized in that it is configured to be coupled to each other to prevent the flow and departure of the valve seat against the operation and fluid pressure of the disk.

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