JPS6367478A - Valve - Google Patents

Abstract

PURPOSE:To make a valve small-sized by fixedly providing electromagnets driving a rotor on a bent tube wall and strongly operating a valve body with the rotation of the rotor. CONSTITUTION:A lug 9 and a lug 10 to prevent the rotation of a valve body 3 are fixedly provided on the inner wall of a bent tube 1. A rotating drive shaft 6 penetrates an opening section bored on the wall of a chamber 12 provided on the inner wall of the bent tube 1 and is fixedly connected to a rotor rotatably provided in the chamber 12. Electromagnets 4 generating the rotating magnetic field driving the rotor 5 are arranged around the rotor 5. Accordingly, the valve body 3 is moved by the rotation of the rotor 5 provided, thus this valve can be made small-sized.

Description

[Detailed Description of the Invention] [Object of the Invention] It is an object of the present invention to provide a valve in which external accessories are made as small as possible, an electromagnetic force and a screw mechanism are combined, and a valve body operates precisely and powerfully. The purpose of

[Configuration of the Invention] FIGS. 1 and 3 show longitudinal cross-sectional end faces of the valve of the present invention.

Figures 2 and 4 are A-A in Figures 1 and 3, respectively.
A cut end surface taken along line A and line B-B is shown.

A bent pipe 1 in FIG. 1 is the main body of the valve of the present invention, and the valve of the present invention is suitable for installation using a bent portion of a piping path. Therefore, it is preferable that the diameter of the curved pipe 1 is made to match the diameter of the pipe.

A valve seat 2 is provided at one end of the bent pipe 1 on the left side in the drawing. The seat surface of the valve seat 2 may be smooth or non-smooth for labyrinth configurations. A valve body 3 is provided which fits into the valve seat 2 to block or control fluid flow. The shape of the illustrated valve body 3 is a needle valve type suitable for precise flow control.

The valve function surface of the valve body 3 may be smooth like the seat surface, or may be non-smooth for use in a labyrinth configuration. The valve body 3 may be of a stop valve type when its main purpose is to cut off or open the flow of fluid. On the opposite side of the valve body 3 from the valve function part, there are provided an internal threaded portion 8 for receiving the thrust and traction force required by the valve body 3, and a protrusion 9 for preventing rotation of the valve body 3.

A plurality of protrusions 9 may be provided as necessary.

A rotary drive shaft 6, which has a threaded portion 7 that screws into the internal threaded portion 8 of the valve body 3 and provides the necessary propulsive force and traction force to the valve body 3, is connected to the valve body 3.
and the rotor 5.

The threaded portion 7 and the internal threaded portion 8 are screwed together as a sliding screw or a ball screw.

A protrusion 10 having a linear groove 11 into which a protrusion 9 for preventing rotation of the valve body 3 is easily slidably fitted is fixedly provided on the inner wall of the curved pipe 1.

A rotary drive shaft 6 passes through an opening formed in the wall of a chamber 12 provided in the inner wall of the curved pipe 1, and is fixedly connected to a rotor 5 rotatably installed in the chamber 12.

Electromagnets 4 that generate a rotating magnetic field that drives the rotor 5 are arranged in the chamber 12 around the rotor 5 .

The opening in the wall of the chamber 12 through which the rotary drive shaft 6 passes is provided with air-tight or liquid-tight sealing means, if necessary.

When the inner diameter of the curved pipe 1 is small, or when the fluid velocity inside the pipe is extremely high, the electromagnet 4 and the rotor 5 cannot be accommodated in the space inside the pipe, the electromagnet 4 or the rotor 5 is bent. It may be provided outside the tube 1.

FIG. 3 shows a case where both the electromagnet 4 and the rotor 5 are provided outside the curved pipe 1.

In Figures 1 and 3, the electromagnet 4 is arranged around the outer periphery of the rotor 5, but the rotor 5 is of a type in which a hollow rotor 5 rotates around the outer periphery of the electromagnet 4, increasing the torque of the rotor. Good too.

[Brief explanation of the drawing]

1 and 3 show longitudinal cross-sectional end faces of the valve of the present invention, and FIGS. 2 and 4 show the end faces cut along lines 8-A and 7-B in FIGS. It shows. 1 Bent pipe 6 Rotating shaft 11 Protrusion 2 Valve seat 7 Threaded part 12 Chamber 3 Valve body
8 Internal threaded portion 4 Electromagnet 9 Protrusion 5 Rotor 10 Groobe Applicant Toyo Engineering Co., Ltd. Figure 1 Figure 3

Claims (1)

[Claims] A valve seat 2 is installed at one end of the bent pipe 1.
The valve body 3 is provided with an internal threaded portion 8 and a protrusion 9 on one side facing the valve function portion, and a rotation shaft 6 for driving the valve body 3 is provided on the internal threaded portion 8. The threaded part 7 at one end is screwed and inserted, the other end of the rotating shaft 6 is fixedly connected to the rotor 5, and the protrusion 9 is fitted into a groove 10 provided on the inner wall of the curved pipe 1. , a valve in which an electromagnet 4 for driving a rotor 5 is fixedly provided on the wall of a curved pipe 1.