JP3048911U - Pipe fittings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe joint mainly for fluid transportation piping in fluid foods, medicines and the like, which allows the internal fluid to be seen through a transparent pipe joint. SOLUTION: A transparent plastic joint main body 2 having a plurality of connection openings 3 having a flange 4 at an opening edge.
And a socket member 6 which has a flange 8 at one end opening 7a and which comes into close contact with the flange 4 of the connection opening 3 and can receive one end of the pipe P to be connected at the other end opening 7b. In constructing 1, the inner peripheral surface of the socket member 6 is tapered at a predetermined gradient from the other end opening 7b side to the one end opening 7a side, and is inserted from the other end opening 7b side. The inner peripheral surface of the pipe end of the connected pipe P to be fixed and the inner peripheral surface of the connection opening 3 of the joint main body 1 are connected in a flush state without any step.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a pipe joint used for connecting pipes, and particularly to a pipe joint used for connecting pipes for transporting fluids that emphasize hygiene of foods, pharmaceuticals, and the like.

[0002]

[Prior art]

 Special attention has been paid to the piping for transporting fluids such as foods and pharmaceuticals from the sanitary point of view.In order to prevent microorganisms such as bacteria from forming in the system and propagating, some polyvinyl chloride resin is used. Although pipes made of plastic materials such as those described above are also used, stainless steel pipes are generally used. This stainless pipe is designed so that the pipes can be connected to each other by welding, and if necessary, dismantled parts of the pipe to clean or sterilize the inside.

[0003]

[Problems to be solved by the invention]

 Such stainless steel pipes are inherently rust-resistant metal materials, but the structure of the relevant parts is liable to change due to the heat of welding performed at the time of piping, and there is a concern that corrosion may occur depending on the type of fluid transported, for example, chemicals. There is a great danger that this corrosion will cause troubles such as changes in the composition, alteration and decomposition of the fluid flowing inside, as well as the generation and mixing of foreign substances.

[0004] In addition, since the stainless steel tube is opaque, the degree of contamination on the inner surface of the tube cannot be determined, and even if microorganisms grow in the tube, it cannot be detected at an early stage. It is extremely difficult to monitor the fluid flow state and other behaviors, and to detect pipe breakage accidents at an early stage, etc. I have a problem.

[0005] On the other hand, a plastic pipe such as a vinyl chloride resin allows use of a transparent pipe. In many cases, the connecting portion is connected with a step inside the pipe via a pipe joint. Therefore, there is a possibility that bacteria may be generated at the step, and since this connection portion is adhered by an adhesive so that it cannot be disassembled, it is not easy to disassemble and clean the inside.

[0006] In view of the present situation, the present invention can accurately grasp the state of the fluid in the pipe from the outside, and can perform a periodic inspection by being configured to be disassembled, and requires specialized tools and the like. The aim is to provide pipe fittings that can be installed on-site without the need.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the pipe joint of the present invention has a transparent plastic joint main body having a plurality of connection openings having a flange at an opening edge and a flange at the one end opening close to the flange of the connection opening. A transparent plastic socket member capable of receiving one end of the connected pipe at the other end opening, and having an inner peripheral surface of the socket member at the other end opening. The diameter of the tapered shape is reduced from the part side toward the one end opening side in a tapered manner at a predetermined gradient, and the pipe end inner peripheral surface of the connected pipe to be inserted and fixed from the other end opening side, and the connection opening mainly composed of the joint. Are connected so that the inner peripheral surfaces thereof are flush with each other without any step.

[0008]

[Embodiment of the invention]

 The pipe joint of the present invention comprises a joint body having a predetermined connection opening and a socket member which is tightly held in contact with the connection opening, and the joint body is made of transparent plastic. Although it is formed, it is preferable that the socket member is also formed of transparent plastic for seeing through the inside.

Examples of the plastic forming such a joint main body include a transparent body of a thermoplastic resin such as vinyl chloride resin, polyethylene, polypropylene, polyamide, and polycarbonate. These plastics are appropriately selected depending on the type of fluid to be applied, the temperature and pressure, the type of piping to be connected, and the like. If desired, a colored transparent body may be used for the purpose of protecting the internal fluid.

[0010] The joint main body forming one of the pipe joints is a straight tubular two-way joint having connection openings formed at both ends, and a two-way joint having connection openings formed in different directions by bending at a predetermined angle. A T-shaped three-way joint with connection openings formed at both ends and one side in between, a Y-shaped three-way joint with three connection openings arranged at equal angles, and four connection openings with a cross shape In addition to the four-way joints arranged in the above, various forms such as joints in which three or more connection openings are formed in three-dimensionally different directions are appropriately selected and used according to the purpose.

[0011] Each of these connection openings of the joint main body may be all unified with the same inner diameter, but as separate and different diameters, pipes having different pipe diameters are received and connected. May be selected according to the purpose.

The other socket member has one end attached to a connection opening formed in the joint main body, and the other end having a length capable of receiving and fixing one end of a connected pipe. In principle, the number corresponding to the number of connection openings formed in the joint main body is configured as a set. The length of the socket member is such that the inner peripheral surface of the pipe end of the connected pipe received from the other end opening and the inner peripheral surface of the connection opening mainly composed of the joint can be connected flush. That's fine.

A flange having a predetermined width is integrally formed on an outer periphery of each connection opening of the joint main body and an outer periphery of one end of a socket member abutting on each connection opening of the joint main body. The contact surfaces of these flanges are in contact with each other to fix the joint main body and the socket member.

An annular groove is engraved on the contact surface between each flange provided on the joint main body and the flange provided on the socket member, and each annular groove is formed by bringing the two flanges into contact with each other and tightening them. It is configured so as to be able to close the inside and outside of the connected pipe by holding the ring-shaped packing that is closed inside.

[0015] The two flanges are tightened by being clamped and tightened by a clamp member, so that the fluid flowing inside can be shut off by the packing so as not to leak.

[0016] The inner diameter of the socket member that is in contact with the connection opening side of the joint main body is larger than the inner diameter of the connection opening, and is substantially the thickness of the front end of the connected pipe inserted from the other end of the socket member. It is of the diameter enlarged by the amount of.

The distal end of the connected pipe is a tapered outer diameter of the connected pipe at a predetermined gradient in the distal direction, and the inner diameter of the socket member is also adjusted to the tapered shape. The diameter is tapered from the other end to one end. A preferable inclination of the taper whose diameter is reduced from the other end to the one end of the socket member is in a range of 1/20 to 1/40.

[0018] The connected pipe is inserted from the other end of the socket member and fixed by bonding, and the joint main body and the socket member are connected to each other by clamping the respective flanges against each other and clamping them with a clamp.

[0019]

[Action]

 The pipe joint of the present invention comprises a joint body having a predetermined connection opening made of a transparent plastic, and a socket member which is tightly held in contact with the connection opening. The socket member is inserted into the socket member to fix the socket member by bonding, and the socket member and the flange provided on the joint body are brought into contact with each other and tightened so that there is no step on the inner surface between the connected pipe and the joint main body. Since the pipes are airtightly connected to each other, the resulting pipes are finished smoothly with no steps at the joints and other parts, preventing the generation and propagation of foreign substances such as bacteria due to internal fluids such as food. be able to. In addition, since at least the joint main body is made of transparent plastic so that it can be seen through, it is easy to grasp the contamination state in the pipe, the behavior of the internal fluid, and the like, and it is easily disassembled by separating the opposed flange. The inside of the pipe can be cleaned, and assembly after cleaning becomes easy.

[0020]

【Example】

 Hereinafter, embodiments of the pipe joint of the present invention will be described more specifically with reference to the accompanying drawings. The pipe joint 1 of the present invention comprises a joint main body 2 and a socket member 6 as shown in FIG. One joint body 2 is formed by molding a transparent vinyl chloride resin to form a T-shaped three-way joint having three connection openings 3, 3, 3 having the same inner diameter. On the outer periphery of the connection opening 3, flanges 4, 4, 4 having a predetermined width and thickness are integrally formed.

As shown in FIG. 2, annular grooves 5, 5 and 5 for holding a ring-shaped rubber packing 10 are provided on each contact surface of each of the flanges 4.

The other socket member 6 is also a short tube formed by molding a transparent vinyl chloride resin similarly to the joint main body 2, and a flange 8 is integrally provided on an outer peripheral edge of the one end opening 7 a. An annular groove 9 for holding the ring-shaped rubber packing 10 is also formed on the contact surface of the flange 8.

The socket member 6 is tapered from the other end opening 7b to the one end opening 7a in a tapered shape with a predetermined gradient, and as shown in FIG. The connection pipe P is inserted from the mouth 7b.

Since the connected pipe P has a tapered outer diameter at the distal end to be inserted into the socket member 6, the inner diameter of the socket member 6 is also reduced to this tapered shape. According to the outer diameter of the connected pipe, the inner diameter is reduced from the other end opening 7b toward the one end opening 7a.

The connected pipe P is inserted into the socket member 6 from the other end opening 7 b, and the leading end thereof is flush with the one end opening 7 a of the socket member 6 by an adhesive. Or bonded integrally by heat welding.

The socket member 6 to which the pipe to be connected P is attached has one end opening 7 a facing the connection opening 3 of the joint main body 2, and the annular grooves 5 and 9 provided in the flanges 8 and 4 of each other. With the ring-shaped packing 10 interposed therebetween, the flanges 8 and 4 are tightened by the clamp member 11 to connect the connected pipe P to the joint main body 2.

By this connection, the joint main body 2 and the connected pipe P are connected in a state where the inner surfaces thereof are flush with each other without any step, and are connected to the annular grooves 5 and 9 provided on the contact surfaces of the flanges 8 and 4. The held packing 10 prevents the leakage of the fluid and keeps the inside airtight.

In the same manner, another connection pipe is connected to another connection opening 3 of the joint main body 2 via another socket member 6 for piping. Since the joint body 2 and the socket member 6 are both made of a transparent plastic material, the behavior of the fluid inside, the state of contamination in the pipe, and the like can be easily known.

The inside of the pipe can be easily disassembled by releasing the clamp by the clamp member 11 that tightens the flanges 8 and 4, and the inside of the pipe can be easily discharged, and the discharge, sterilization, cleaning, and the like of the waste in the pipe can be performed. It can be done very easily.

[0030]

[Effects of the Invention] The pipe joint of the present invention comprises a joint body having a predetermined connection opening made of transparent plastic, and a socket member which is tightly held in contact with the connection opening. By inserting the end of the connecting pipe into the socket member and fixing the socket member by appropriate means, the socket member and the flanges provided on the joint body are brought into contact with each other and tightened with each other to thereby connect the connected pipe to the joint body. It can be connected in an airtight manner without any step on the inner surface.

[0031] Since the connecting portions of the pipes thus obtained are flush with each other without any steps, it is possible to prevent the generation and propagation of foreign substances such as bacteria due to the internal fluid of food and the like. In both cases, since the main body of the joint is made of transparent plastic, it is easy to grasp the state of contamination in the pipe, the behavior of the fluid, the state of cavitation due to transportation, and the like by separating the flanges that are in contact with each other. It can be easily disassembled to clean the inside of the pipe, and assembly after cleaning becomes easy.

The pipe joint of the present invention exerts its usefulness for connecting pipes handling fluid foods, seasonings, alcoholic beverages, etc. due to the above effects.

[Brief description of the drawings]

FIG. 1 is an exploded sectional view showing an example of the pipe joint of the present invention.

FIG. 2 is a longitudinal sectional view illustrating the connection of pipes by the pipe joint of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe joint 2 Joint main body 3 Connection opening 4, 8 Flange 6 Socket member 7a One end opening 7b Other end opening 11 Clamp member P Connected pipe

Claims (5)

[Utility model registration claims] 1. A transparent plastic joint main body having a plurality of connection openings having a flange at an opening edge, a flange at one end opening closely contacting the flange of the connection opening, and another end opening. A socket member capable of receiving one end of the connected pipe in the portion,
A pipe end of a connected pipe to which the inner peripheral surface of the socket member is tapered at a predetermined gradient from the other end opening side to the one end opening side and is inserted and fixed from the other end opening side. A pipe joint characterized in that an inner peripheral surface of an inner peripheral surface and an inner peripheral surface of the connection opening mainly composed of the joint are connected in a flush state with no step. 2. The socket member is made of transparent plastic, and is characterized in that one end of the connected pipe is inserted from the other end opening and the connected pipe is fixed by bonding. The pipe joint according to claim 1. 3. The socket member has a length capable of connecting the inner peripheral surface of the pipe end received from the opening at the other end and the inner peripheral surface of the connection opening mainly of the joint at the same level. The pipe joint according to claim 1, wherein: 4. The joint main body and the socket member are formed by engraving annular grooves on respective contact surfaces of the respective flanges, holding a ring-shaped packing in the annular grooves, and tightening the mutual flanges to be connected. The pipe joint according to claim 1, wherein the inside of the pipe is configured to be airtightly connected. 5. The pipe joint according to claim 1, wherein the joint fixing between the joint main body and the socket member by the flange is performed by detachable tightening of a clamp member surrounding the outer periphery of the flange.