JPS61243301A - Opening meter unit - Google Patents

Abstract

PURPOSE:To facilitate the handling of an opening meter by integrating it and a joint into a small size unit. CONSTITUTION:Adjusting a stopcock opener 7a on the top of a screw rod 7 rotates the valve rod 1a of a sluice valve 1 or the like via the screw rod 7, a screw rod connector 13, a first square pipe 12, a loose fitter 18, a second square pipe 17, a cap joint 20 and a connecting member 19 to adjust the opening of the sluice valve 1, changing a flow rate. The movement corresponding to the adjustment of the opening vertically moves a nut 9 via the male screw portion 7b of the screw rod 7 of an opening meter portion A and the screw of the nut 9 and slides a slider 9c mounted to the top of the nut 9 along the spiral slot 8a in a screw cylinder 8. A pointer 11 loosely fit in a longitudinal hole in the nut 9 is circumferentially displaced on the opening scale on a base 4 by the angle corresponding to the spiral displacement of the slider 9c, whereby the opening can be displayed. Since structure is thus simple and of small size, an opening meter has few damages and the handling thereof is facilitated.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an opening meter unit for a valve installed in, for example, underground water pipes, and particularly relates to a joint and a valve opening meter unit installed in underground water pipes, etc. This invention relates to an opening gauge unit that is equipped with an opening gauge that is resistant to the intrusion of earth and sand, and is integrated for easy handling.

[Conventional technology]

Conventional opening gauges built into valve housings, etc. are configured to drive the opening display pointer using a deceleration mechanism that uses a worm, a worm wheel, and gears with different numbers of teeth to mesh with each other. Therefore, both have complicated structures, are difficult to process, and are large in size, resulting in high costs.

In addition, as for the joint that joins the position meter shaft of the position meter and the valve stem of the gate valve, etc., there were cases where a single universal joint was used as the position meter became larger, but it differs depending on the site. The design was not standardized and was inconvenient to handle, and the amount of allowable deformation in the front, back, left, right, top and bottom directions was small, and they often failed or were damaged due to subsidence or deformation of the ground.

Further, there is a problem in that dirt, sand, etc. easily enter the valve housing, and when this enters, the speed reduction mechanism of the opening gauge and the like malfunctions, resulting in inaccurate opening display of the opening gauge.

[Problem that the invention seeks to solve]

The present invention addresses the above-mentioned conventional position gauge units that are inconvenient to handle, cannot be adapted to subsidence or deformation of the ground, and that the position gauge has a complicated structure, is difficult to process, is large, and is expensive. The object of the present invention is to provide a unitized openness meter unit that solves the problems of the present invention and its vulnerability to the infiltration of earth and sand.

[Means for Solving the Problems and Their Effects] The present invention has been made to solve the above-mentioned problems. In the opening meter unit, the opening meter shaft is inserted into the bottom inner surface of the base on the axis center through a bearing and a mechanism, and the cylinder has a spiral elongated hole carved in the inner peripheral surface directly below the base. Fix the bodies concentrically, screw a nut onto the male thread of the opening gauge shaft,
A slider is provided at the tip of the nut to fit loosely into the long spiral hole with a larger helical angle than the helical angle of the threaded part to constitute a speed reduction mechanism, and a slider is provided in the vertical hole bored in the body of the nand. an opening gauge section having a pointer whose tip is loosely fitted between the bearing and the meter so that protrusion in the axial direction is restricted and is movable in the circumferential direction on the opening display scale of the base; A joint part provided with one or more shaft members and a universal joint and an expandable joint is provided between the opening gauge shaft of the opening gauge part and the valve stem of the valve, and the joint part is provided with a universal joint and an expandable joint. The opening of the valve can be adjusted to allow an appropriate amount of flow to pass through by turning the opener while checking the scale of the opener.

[Example 1] Hereinafter, an example of the present invention will be described based on the drawings. 1 to 5 are drawings according to embodiments of the present invention.

For example, as shown in Fig. 1, a valve housing 2 communicating with the ground surface for adjusting the opening degree of the valve is provided on the upper part of a gate valve 1 of a buried pipe such as a water pipe, and a concrete frame body 2a, a fixed case 2b , a movable case 2c. An opening gauge portion A is located on the same axis as the valve stem 1a of the gate valve 1 inside the valve housing 2.

An opening degree meter unit consisting of a joint part B is provided.

First, the opening meter section A is provided inside the ground surface with the lid 3 removed so that the opening state of the valve can be identified, and is constructed as follows. That is, as shown in FIGS. 2 and 3, a threaded rod serving as a position gauge shaft is attached to the bottom inner surface of a saucer-shaped base 4 attached to the movable case 2c of the valve housing 2 via a bearing 5 and a measuring device 6. 7 is rotatably inserted. A cap opener 7a projects from the base of the threaded rod 7. Immediately below the base 4, a cylindrical body, that is, a threaded tube 8, is concentrically fixed with a long spiral hole 8a carved or opened in its inner circumferential surface.

The male threaded portion 7b of the threaded rod 7 is shown in FIGS.
As shown in the figure, a nut 9 having a female thread 9a having the same helical angle as the nut 9 is screwed together. A vertical groove 9b is formed in the female threaded portion 9a of the nut 9 in the vertical direction.

A slider 9c is provided at the tip of the nut 9 and is loosely fitted into the long spiral hole 8a of the threaded tube 8 and is capable of spiral movement.

Therefore, the helical angle of the long spiral hole 8a of the screw cylinder 8 is +57
The male thread 7b carved into the nut 9 is much larger than the female thread 9a, so it is slowed down and the slider 9 of the nut 9
c is configured to move spirally.

Furthermore, a vertical hole 9e is bored in the body portion 9d of the nut 9, and a rod portion 11a extending upward therein, and a shaft portion 1
The bearing 5 and the bearing 6 are welded to the bearing 5 and have a ring shape.
A pointer 11' is composed of a reinforcing part 11b that is loosely fitted in between the needle part 11c and a needle part 11c that is movable in the circumferential direction on the opening degree display scale lo on the base 4.
h<provided. That is, the pointer 11 is configured to move in the circumferential direction on the opening degree display scale lo by the rotation amount of the helical movement of the slider 9c.

Next, the configuration of the joint portion B will be explained.

There is a universal joint between the end 7C of the threaded rod 7 of the opening gauge section A and the first square pipe 12 of the shaft member! - A threaded rod joint 13 is provided. That is, the threaded rod joint 13 has a long hole bored in the threaded rod end 7C, and the first square pipe 1 is inserted into the long hole.
2 and a reinforcing ring 14, and are fastened with hexagonal bolts 15 and nuts 16 to allow movement mainly in the left-right and front-back directions. Further, between the first square pipe 12 and the second square pipe 17, which are the lower shaft members, a loose fitting part 18 is provided which functions as a telescopic joint. That is, the outer tip of the second square pipe 17 is loosely fitted inside the first square pipe 12, allowing movement mainly in the vertical direction. A camp joint 20, which is a universal joint, is also provided between the second square pipe 17 and a connecting member 19 that connects the valve stem 1a of the gate valve 1. That is, a long hole is bored at the end of the connecting member 19, the second square pipe 17 and the reinforcing ring 21 are surrounded thereon, and the hexagonal bolt 2 is inserted.
2 and a nut 23 that pass through the above-mentioned member and are fastened to allow movement primarily in the left-right, front-back, and front-back directions.

With this configuration, by adjusting the cap opener 7a at the upper end of the threaded rod 7, the threaded rod 7. Threaded joint 13. First square pipe 12. Loose fitting part 18゜Second square pipe]7. Cap joint 20. The valve stem 1a of the gate valve 1 etc. can be rotated through the connecting member 19, and the flow rate can be changed by adjusting the opening degree of the gate valve 1. This opening is determined by moving the nut 9 in the vertical direction via the male threaded part 7b of the threaded rod 7 of the opening gauge part A and the female threaded part 9a of the nut 9, and then slide the slider 9C at the tip of the nut 9 into the threaded cylinder. Only the rotating bone of the spiral movement slides through the spiral long hole 8a of 8.
The pointer 11 loosely fitted into the vertical hole 9e of the nut 9 can be displayed by moving it in the circumferential direction on the opening degree scale of the base 4.

As described above, since the opening degree meter unit of the present invention has a simple and compact structure, it is possible to reduce failures and reduce manufacturing costs.

In addition, a threaded joint 13 and a cap joint 20 are provided on the joint part to allow movement in the left-right and front-back directions, and a loose fitting part is provided to allow movement of the first square pipe 12 and the second square pipe 17 in the northward direction. 18, it is possible to have a large tolerance for ground subsidence and deformation.

Furthermore, since vertical grooves 9b are carved in the vertical direction on the female threaded part 9a of the nut 9 that is screwed into the male threaded part 7b of the threaded rod 7 of the opening gauge part A, dirt and sand can get caught in the male threaded part 7b and the female threaded part 9a. Since the ring-shaped reinforcing portion 11b is also formed on the pointer 11, it is possible to reduce failures of the opening gauge.

Although this embodiment shows the case where the opening degree meter unit is attached to the valve housing, it is of course possible to use it as a standing position meter in a valve chamber or the like.

〔Effect of the invention〕 .

As explained above, the opening gauge unit of the present invention has the opening gauge and the joint in a compact unit, making it extremely easy to handle.
It can be used as a standing position gauge in existing valve cases, valve chambers, etc.

In addition, the position meter of the present invention does not use a complicated reduction mechanism such as a worm or gear, and although it has a simple structure, it operates reliably and has fewer failures. Since the structure of the chamber can be made small enough to accommodate the valve, manufacturing costs and installation costs can be reduced.

Furthermore, since the joint part is equipped with a universal joint and an expandable joint, there is a large tolerance for ground subsidence and deformation. In particular, when it comes to installation work, conventionally there was no way to correct errors in the posture of the gate valve when it was buried, such as the buried dimensions or horizontality, which sometimes required redoing the work.
According to the opening gauge unit of the present invention, construction errors can be corrected using the expandable joint and the universal joint.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a front cross-sectional view of a valve housing with a position meter unit attached, Fig. 2 is a front cross-section of the position meter section, and Figure 3 is a view of the position meter. FIG. 4 is a front sectional view of the main part of the opening gauge part, and FIG. 5 is a plan view of the nut of the opening gauge part. 1...Gate valve 1a...Valve rod 2...Valve
Chassis 3...Lid 4...Base 5...Bearing 6...Measurement 7...Threaded rod 7a...
・Opener 7b...Male thread part 8...Threaded cylinder 8a・
...Spiral long hole 9...Nut 9a...Female thread part
9b... Vertical groove 9c... Slider 9d... Trunk
Part 9e...Vertical hole 10...Opening degree display scale 11
...Pointer 11a...Bar part 11b...
・Reinforcement part 11c...needle part 12...first
Square pipe 13... Threaded rod joint 14... Reinforcement ring 17... Second square pipe 18... Loose fitting part 19... Connecting material 20... Cap joint 21... Strengthening ring patent Applicant: Maezawa Kogyo Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4 Figure 4 Dan''moe Figure 5 Dan

Claims (2)

[Claims] (1) In a position meter unit in which a position meter part and a joint part are connected on the same axis as the valve stem of a gate valve, etc., the position is measured through a bearing and a needle holder on the bottom inner surface of the base on the axis. A gauge shaft is inserted, a cylindrical body with a long spiral hole carved directly under the base is fixed concentrically, a nut is screwed onto the male thread of the opening gauge shaft, and the threaded hole is attached to the tip of the nut. A slider is provided that fits loosely into the elongated hole, and the tip of the base is loosely fitted into the vertical hole bored in the body of the nut with the tip thereof being prevented from protruding in the axial direction between the bearing and the needle presser. An opening gauge part provided with a pointer that is movable in the circumferential direction on an opening display scale, and one or more shaft members, a universal joint, and an expandable joint are provided between the opening gauge shaft and the valve stem of the valve. An opening gauge unit characterized by having a joint part. (2) The opening gauge unit according to claim 1, wherein the nut of the opening gauge part has a groove cut in the vertical direction on its female thread.