JPH0640579U - Synthetic resin pipe fittings - Google Patents

Abstract

(57) [Summary] (Correction) [Structure] A pipe joint having three or more receiving ports 2, 3, and 4, and at least one receiving port 2 among these three.
However, it is closed by a plate made of the same synthetic resin that is integrated with the pipe wall of the receiving port 2. [Effects] By forming or cutting the through hole 2 that is closed, it is possible to attach a pipe body to which a sensor for pressure, temperature, concentration, etc. is attached, or a small sampling tube. it can. There are many types of pipe joints for mounting such sensors as pressure, temperature, concentration, etc., and for mounting small tubes for sampling, and the amount used was small and mass production was not possible, but it is processed like the present invention. This is convenient because a pipe joint to which a special pipe is attached can be easily made.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a synthetic resin pipe joint.

[0002]

[Prior art]

 Conventionally, synthetic resin pipes such as hard vinyl chloride resin pipes and ethylene resin pipes have various characteristics such as smooth inner surface and excellent chemical resistance. Therefore, various fluids can be used in various industrial fields. It is used as a transportation pipe.

[0003]

[Problems to be solved by the device]

 However, there were no pipe joints for the purpose of sampling such as measuring the pressure, temperature, and concentration of the fluid in the pipe and extracting the fluid for testing. Therefore, in order to measure the pressure, temperature, concentration, etc. of the fluid in the pipe, or to perform a test by extracting a part of the fluid, conventionally, a saddle with a branch pipe was attached from above the pipe, and the pressure from the branch pipe was used. Sampling was performed by inserting sensors for temperature, concentration, etc. into the pipes and connecting a small pipe for extraction.

However, when attaching the saddle, there is a problem that shavings fall into the pipe and contaminate the fluid in the pipe because the branch pipe is drilled in the pipe. In particular, in the case of piping related to medical treatment, food, etc. and piping for transporting ultrapure water used for cleaning LSI, the above-mentioned contamination of the fluid is fatal. Therefore, conventionally, the appearance of an inspection pipe joint having an inspection port has been desired.

However, since there are many kinds of inspection pipe joints and the amount of one type used is small, in order to manufacture this inspection pipe joint by injection molding with a full-scale injection molding machine or the like, it is necessary to use each size. It requires an expensive mold for each one, which is very uneconomical. Therefore, an object of the present invention is to provide a synthetic resin pipe joint that can obtain an inspection pipe joint of each size with a small amount of molding die without using a molding die of each size.

[0006]

[Means for Solving the Problems]

 The present invention has been made to solve the above problems and achieve the above object, and in a pipe joint having three or more receiving ports, at least one receiving port of the three or more receiving ports is provided. , It is closed with the same synthetic resin plate that is integrated with the wall of the receiving port. As the synthetic resin used in the synthetic resin pipe fitting and the plate body for closing the receiving port of the present invention, all conventional synthetic resins such as vinyl chloride resin can be used. In particular, high melting point synthetic resins such as polyphenylene sulfide and poly (ether ether ketone) are preferable.

In the present invention, at least one of the three or more receiving ports is in a closed state, and the other receiving ports have the same structure as that of a conventionally commonly used pipe joint. There are various methods for manufacturing this pipe joint. For example, in the case of manufacturing with an injection molding machine, a synthetic resin is melted and injected into the mold by using a normal mold with a shortened core. When it comes out, synthetic resin is injected into the shortened part of the core, and the same synthetic resin plate that is integrated with the pipe wall of the receiving port makes it possible to manufacture a pipe joint with the receiving port closed.

[0008]

[Action]

 The synthetic resin pipe joint of the present invention uses an unoccluded receiving port as a normal receiving port, and a secondary hole such as forming a through hole in the blocked receiving port, cutting the pipe wall, or screwing. It can be processed into a special receptacle. Then, connect this pipe joint to the normal receiving port, and attach the pipe for measuring pressure, temperature, concentration, etc. to the special receiving port, or attach the mounting port for sampling.

For example, a through hole is formed in the closed plate body, a female screw is provided on the inner surface of the peripheral wall of the through hole, and a sensor for pressure, temperature, concentration, etc. is attached to the female screw. A screw rod is screwed in, or a through hole is provided in the center of the closed receptacle, the outer peripheral surface is machined to provide a male screw, and a lid for connecting a small pipe for extraction to this male screw. The body is screwed in. The synthetic resin pipe fittings of the present invention are designed according to the size and mounting shape when connecting pipes or small tubes for extraction with special pressure, temperature, and concentration sensors of different sizes and mounting shapes. Since it can be processed, pipe fittings of various shapes are not required.

[0010]

【Example】

 Next, an embodiment of the present invention will be described. 1 and 2 show an embodiment of the present invention. FIG. 1 is a sectional view of the synthetic resin pipe joint of FIG. 1, and FIG. 2 is a sectional view showing a state in which the synthetic resin pipe joint of FIG. 1 is provided with through holes. It is a figure. 3 to 4 show another embodiment of the present invention. FIG. 3 is a sectional view of a synthetic resin pipe joint, and FIG. 4 is a sectional view of the synthetic resin pipe joint shown in FIG. It is a sectional view showing the state where it was machined. FIG. 5 shows another embodiment of the present invention and is a sectional view of a synthetic resin pipe joint. FIG. 6 shows still another embodiment of the present invention and is a sectional view of a synthetic resin pipe joint.

1 and 2, reference numeral 1 denotes a synthetic resin pipe joint made of vinyl chloride resin, and the pipe joint 1 is provided with three receiving ports 2, 3, 4 on three sides respectively. One of the three receiving ports 2, 3, 4 is closed by a plate made of vinyl chloride resin, which is the same as the pipe wall. Reference numeral 5 denotes a through hole provided in the plate body that closes the receiving port 2, and a screw is provided in a peripheral wall of the through hole.

Next, a method of using the synthetic resin pipe joint 1 will be described. A through hole 5 is formed in the plate body of the receiving port 2 of the synthetic resin pipe joint 1 which is closed, and a screw is formed in the peripheral wall of the through hole 5. The pipes are attached to the receiving ports 3 and 4 of this synthetic resin pipe joint by a usual method. Also, a sensor for pressure, temperature, concentration, etc. is attached to the central axis of a threaded rod provided with a male screw on the outer peripheral surface, and this threaded rod is screwed into the through hole 5 to attach a sensor to the receiving port 2. .

Then, the pressure, temperature, concentration, etc. of the fluid passing through the inside of the synthetic resin pipe joint are measured. As described above, since the through hole 5 having a size suitable for the threaded rod can be provided depending on the type of the threaded rod, it is not necessary to manufacture the pipe fittings in the number corresponding to the type of the threaded rod, which is convenient. is there.

Next, the embodiment shown in FIGS. 3 to 4 will be described. Comparing the synthetic resin pipe joint 1a shown in FIGS. 3 to 4 with the synthetic resin pipe joint shown in FIGS. 1 to 2, one of the three receiving ports 2a, 3a, and 4a is a pipe wall. The difference is that it is closed by a plate made of the same vinyl chloride resin. That is, the direction of the receiving port 3a closed by the plate is different.

A method of using the synthetic resin pipe joint 1a will be described. A through hole 5a is provided in the plate body of the receiving port 3a which is closed by the synthetic resin pipe joint 1a, the outer peripheral surface of the receiving port 3a is shaved, and a male screw is bored on the outer peripheral surface. Pipes are attached to the receiving ports 2a and 4a of the synthetic resin pipe joint 1a by a normal method, and a lid body to which a small tube for sample extraction is attached is screwed into the male screw of the receiving port 3a. Then, a liquid flowing in the synthetic resin pipe joint 1a is sampled from a small tube for sample extraction attached to the receiving port 3a.

As described above, since the receiving port 3a can be appropriately shaved and screws can be drilled according to the size of the lid body, it is necessary to prepare the number of pipe joints according to the type and size of the lid. It is easy to use and convenient. Next, the embodiment shown in FIG. 5 will be described. In the embodiment shown in FIG. 5, the shape of the plate body of the receiving port 2b which is closed by the same synthetic resin plate body as the synthetic resin pipe joint 1b is different from the embodiment shown in FIGS. This is the same as the embodiment shown in FIGS.

Next, the embodiment shown in FIG. 6 will be described. In the embodiment shown in FIG. 6, the shape of the plate body of the receiving port 3c, which is closed by the same synthetic resin plate body as the synthetic resin pipe joint 1c, is different from the embodiment shown in FIGS. Others are the same as the embodiment shown in FIGS.

[0018]

[Effect of device]

 The synthetic resin pipe joint of the present invention uses an unoccluded receiving port as a normal receiving port, and a pressure is applied by forming a through hole in the blocked receiving port, scraping the pipe wall, or screwing. It is not necessary to manufacture a special pipe joint because it is possible to attach a mounting port for measuring temperature, concentration, etc. and sampling. Thus, without increasing the number of types of pipe joints, it can be used as many types of pipe joints for measuring pressure, temperature, concentration, etc., and for mounting ports for sampling, which is extremely convenient.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a sectional view of a synthetic resin pipe joint.

FIG. 2 is a cross-sectional view showing a state in which a through hole is provided in the synthetic resin pipe joint shown in FIG.

FIG. 3 shows another embodiment of the present invention and is a sectional view of a synthetic resin pipe joint.

4 is a cross-sectional view showing a state in which a through hole is provided in the synthetic resin pipe joint shown in FIG. 3 and a pipe wall is machined.

FIG. 5 shows another embodiment of the present invention and is a sectional view of a synthetic resin pipe joint.

FIG. 6 shows still another embodiment of the present invention,
It is a sectional view of a synthetic resin pipe joint.

[Explanation of symbols]

 1, 1a, 1b, 1c Synthetic resin pipe joint 2, 2a, 2b Receptacle 3, 3a, 3c Receptacle 4, 4a Receptacle 5, 5a Through hole

Claims (1)

[Scope of utility model registration request] 1. In a pipe joint having three or more receiving ports, at least one receiving port of the three or more receiving ports is closed by a plate made of the same synthetic resin integrated with a pipe wall of the receiving port. A pipe joint made of synthetic resin characterized by being broken.