JPH04138190U - pipe fittings - Google Patents

Abstract

(57) [Summary] [Purpose] To protect the O-ring attached to the inner periphery of the socket from the high heat of the fluid, and to prevent the socket and plug from accidentally separating when they are connected. [Structure] A pipe joint consists of a socket and a plug that can be connected detachably by operating a sleeve, and an O-ring is installed on the inner circumference of the socket to seal between the socket and the plug. A cooling chamber is formed so as to straddle the location where the O-ring is installed, a nipple for connecting a hose is provided in this cooling chamber, cooling water is passed through this cooling chamber to cool the O-ring, and further, An engagement groove that engages with the nipple is formed at the retreating end of the sleeve, allowing the sleeve to retreat when the nipple and engagement groove are aligned.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a protection method that protects the O-ring installed in the socket from high heat in the flow path. This invention relates to a pipe joint equipped with.

0002

[Conventional technology]

Pipe fittings used when the fluid is liquid or gas are designed to prevent fluid leakage. , generally an O-ring is installed to create an airtight seal between the socket and the plug. Ru. This O-ring uses rubber with high heat resistance when the fluid is high temperature. However, heat-resistant measures such as applying fluorine-based grease have also been taken.

0003

[Problem that the idea aims to solve]

However, even with heat-resistant O-rings, they cannot be exposed to high temperatures for long periods of time. This causes problems such as rapid deterioration and poor durability. Also, check the heat resistance temperature of the O-ring. It is dangerous to use it when there is a risk of fluid flowing at temperatures exceeding It is. For example, when used to connect a water supply and drainage hose for cooling casting molds, the cooling If the water supply stops for some reason, the water in the mold will boil and reach a high temperature. The steam may destroy the O-ring and spew out from between the socket and plug. There is a problem that it is dangerous.

0004 This invention solves the above problems, and also allows the sleeve to be removed when connecting the socket and plug. The purpose is to regulate retraction and prevent the socket and plug from separating accidentally. This product provides pipe fittings with a

[0005]

[Means to solve the problem]

In order to achieve the above purpose, this invention connects the sleeve in a detachable manner by manipulating the sleeve. Consisting of a socket and a plug, the inner circumference of the socket has a socket that abuts the plug. In pipe fittings equipped with an O-ring that seals between the socket body and the plug, A cooling chamber is formed in the cylindrical wall so as to straddle the location where the O-ring is installed, and this cooling chamber is The front and rear sides of the chamber are opened on the outer circumferential surface of the socket body, and a nipple is inserted into each opening. We adopted a configuration with .

[0006] The cooling chamber is formed in a spiral shape.

[0007] Also, the retracted end of the sleeve engages the nipple located on the front side of the socket body. It has a structure in which an engagement groove is formed to enable the mating sleeve to retreat.

[0008]

[Effect]

Connect the hose to the two nipples on the outer periphery of the socket body, and When cooling water is sent from the socket, the cooling water enters the cooling chamber formed within the cylindrical wall of the socket body. water is drained from the hose. The cooling chamber is an O-ring attached to the inner circumference of the socket body. The O-ring is cooled by the cooling water entering the cooling chamber. be done.

[0009] The cooling chamber is formed in a spiral shape in the circumferential direction, and the cooling water flows in the circumferential direction. The O-ring is effectively cooled as the fluid flows around the O-ring.

0010 In addition, when retracting the sleeve, use the engagement groove formed at the retracting end of the sleeve. Since it cannot be retracted unless it is aligned with the position of the nipple, the socket When connecting the sleeve and the plug, make sure that the engagement groove of the sleeve matches the position of the nipple. This will prevent the sleeve from retracting and prevent accidental separation of the socket and plug. Prevent them from separating.

[0011]

【Example】

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. In the drawing, 1 is the socket body and 2 is the plug connected to the socket body 1. be. The socket body 1 is composed of two cylindrical bodies, an inner cylindrical body 3 and an outer cylindrical body 4. ing. An O-ring 5 is provided on the inner periphery of the inner cylindrical body 3 to seal the outer periphery of the tip of the plug 2. is installed. Further, on the outer peripheral surface of the inner cylinder body 3, there is a place where the O-ring 5 is attached. A spiral groove is formed in the circumferential direction to a predetermined length in the axial direction so as to straddle the Ru. The outer cylindrical body 4 is fitted onto the outer periphery of the inner cylindrical body 3. As a result, the outer cylindrical body 4 The inner peripheral surface of the inner cylindrical body 3 closes the upper part of the groove formed on the outer periphery of the inner cylindrical body 3, and the inner cylindrical body 3 and the outer cylindrical body 4 are connected to each other. A spiral cooling chamber 6 is formed between them. 7 and 8 are the inside of the front and rear sides of the cooling chamber 6. This is a packing that seals between the cylindrical body 3 and the outer cylindrical body 4.

0012 The outer cylindrical body 4 has openings 9 and 10 that communicate with the front and rear sides of the cooling chamber 6. These openings 9 and 10 each have a nip for connecting a hose. 11 and 12 are provided. Connect hoses to these nipples 11 and 12, respectively, and send cooling water from one side. Once in, the cooling water enters the cooling chamber 6 through which it is drained. At this time, the socket The kit body 1 is cooled by cooling water passing through a cooling chamber 6, but this cooling chamber 6 is The cooling chamber 6 is formed so as to straddle the location where the cooling chamber 6 is installed. It is formed in a spiral shape, and the cooling water flows while rotating in the circumferential direction, so the O-ring 5 is effectively cooled.

[0013] The front part of the outer cylinder body 4 protrudes more forward than the front part of the inner cylinder body 3, and this front part A lock ball fitting hole 13 is provided in the circumferential direction of the lock ball fitting hole 1. A lock ball 14 is fitted into the lock ball 3 so as to be freely protrusive and retractable in the centrifugal direction. 15 is the outer cylinder A sleeve fitted to the outer circumference of 4 so as to be slidable in the axial direction and rotatable in the circumferential direction. move forward to press the lock ball 14 in the centripetal direction, and move backward to release the pressure. It has become so. 16 is a spring that urges the sleeve 15 in the forward direction. , and is interposed between the outer cylinder body 4 and the sleeve 15.

[0014] Further, when the sleeve 15 is in the forward position, the retreating end thereof is connected to the outer cylinder body 4. It is formed in a length that is located just in front of the nipple 11 located on the front side provided in the At the retreating end, there is a groove that engages with the nipple 11 and releases the pressure on the lock ball 14. An engagement groove 17 is formed that allows for retraction to be performed. This allows the sleeve 15 is in the forward position, that is, when the plug 2 is connected to the socket body 1. When the sleeve 15 is rotated in the circumferential direction, a If the engagement groove 17 and the nipple 11 are kept in a mismatched state (the state shown in FIG. 3), The retreating end of the sleeve 15 contacts the nipple 11 to prevent the sleeve 15 from retreating. be done. When retracting the sleeve 15, the sleeve 15 is rotated to By aligning the engagement groove 17 with the nipple 11, its retraction is enabled.

[0015] 18 is a collar that prevents the lock ball 14 from sinking into the socket body 1; , 19 is a spring that urges the collar 18 forward, and 20 is a spring attached to the outer periphery of the plug 2. The lock ball engaging groove 21 formed is a heat-resistant cover of the sleeve 15.

[0016]

[Effect of the idea]

As described above, according to the present invention, the socket is attached to the two nipples on the outer periphery of the socket body. By connecting the hose and sending cooling water from one hose, the inner circumference of the socket body can be It can cool the attached O-ring and protect it from the high heat of the fluid. This ensures the durability of the O-ring and prevents the risk of O-ring destruction due to the high heat of the fluid. can be stopped. Furthermore, the nipple serves as a stopper for the sleeve and the sleeve This prevents the socket and plug from accidentally separating as it restricts the retraction of the sleeve. can be prevented.

[Brief explanation of drawings]

FIG. 1 is a partially longitudinal side view showing an embodiment of the present invention.

FIG. 2 is a partially cross-sectional view taken along the line AA in FIG. 1;

FIG. 3 is a side view showing a connection state between a socket and a plug.

[Explanation of symbols]

1 Socket body 2 plug 5 O-ring 6 Cooling room 9,10 Opening 11,12 Nipple 15 Sleeve 17 Engagement groove

Claims (3)

[Scope of utility model registration request] Claim 1: Consists of a socket and a plug, which are removably connected by operating a sleeve, and on the inner periphery of the socket there is an O that contacts the plug and seals between the socket and the plug.
In a pipe fitting equipped with a ring, a cooling chamber is formed in the cylindrical wall of the socket body so as to straddle the point where the O-ring is attached, and the front and rear sides of this cooling chamber are opened to the outer peripheral surface of the socket body, respectively. A pipe fitting with a nipple at the opening. 2. The pipe joint according to claim 1, wherein the cooling chamber is formed in a spiral shape. 3. The pipe joint according to claim 1, wherein an engagement groove is formed at the retreating end of the sleeve to engage with a nipple located on the front side of the socket body to enable the sleeve to retreat.