JPH0332977Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a liquid level gauge, and more specifically, to a vacuum tailpiece of a liquid level gauge that simplifies the check ball removal mechanism in the vacuum tailpiece. It is something.

[Prior Art] As shown in Fig. 4, a conventional vacuum tailpiece for a level gauge of a vacuum storage tank has a spindle unit 2 at one end of a valve body 1, and a mounting flange 3 at the other end for attaching to the side wall surface of the can body. Strap body 4
The spindle unit 6 is attached to the body via a bonnet 61, and the gauge 7 is attached to a pair of vacuum tail pieces having such a structure.

Specifically, this vacuum tailpiece is a valve body 1 with a valve seat 16 screwed onto a stepped part 15 of a liquid passage hole 14 penetrating a cross-shaped body main body 11 having sockets 12 and 13. Screw the bonnet 21 onto the large diameter hole side of the hole 14,
The spindle 22 is screwed through this bonnet, and the gland packing 23 is inserted into the gap between the spindle and the through hole formed in the bonnet.
The first spindle unit 2, which has a handle 26 attached to the end of the spindle 22 with a nut 27, is attached to the end of the spindle 22, and the valve body 1
is fitted and welded to the strap body main body 41 which has a T-shaped liquid passage hole 43 having a socket 42,
This strap body body is fitted and welded to the flange 3, and a check ball 45 is disposed in the stepped portion 44 of the T-shaped branch hole of the liquid passage hole, and a check ball 45 is disposed in the stepped portion 44 of the T-shaped branch hole of the liquid passage hole, and a check ball 45 is disposed in the stepped portion 44 of the T-shaped branch hole of the liquid passage hole. A bonnet 61 is screwed onto the bonnet, a spindle 62 is screwed into the bonnet, and a gland packing 63 is screwed into the bonnet through a packing gland 64 in the gap between the spindle and the through hole formed in the bonnet. 65
The second spindle unit 6 has a handle 66 attached to the end of the spindle 62 with a nut 67.

The pair of vacuum tailpieces are liquid-tightly attached via flanges 3 to the side wall of the can with a liquid passage hole, and a gauge is attached between the sockets 12 of the upper and lower vacuum tailpieces via a gauge connection. , connect the ground plug to the upper socket 13 and the vacuum tailpiece socket 1 to the lower part.
A liquid level gauge is constructed by attaching a drain valve to each part.

In a liquid level gauge with such a configuration, when the cavity inside the can is in a vacuum state, if the gauge glass 74 is broken, the pressure inside the can is low, so the check ball 45 comes into pressure contact with the stepped part 44 of the liquid passage hole 43, and the liquid flows out. It has the function of blocking the through hole and preventing a decrease in the degree of vacuum inside the can. To replace the gauge glass 74, turn the handle 26 of the first spindle unit 2, press the tip of the spindle 22 against the valve seat 16, close the liquid passage hole 14, and socket the damaged gauge glass 74 and gauge connection. 12 and replace it with a new gauge glass 74. After this exchange, turn the handle 26 to remove the spindle 2.
Even if the liquid passage hole 14 is opened by retracting the liquid passage hole 14, the inside of the liquid passage hole 43 is still a vacuum, so the check ball 45 is still blocking the liquid passage hole 43. Therefore, the handle 66 is turned and the spindle 62 is screwed in. By pushing down the check ball 45 with its tip to open the liquid passage hole 43, the liquid inside the can flows into the gauge 7 through this liquid passage hole up to the liquid level.

[Problems to be solved by the invention] However, the existence of the first spindle unit 2, the second spindle unit 6, and single-function spindle units complicates the configuration of the vacuum tailpiece and requires two operations. It has the disadvantage that it is difficult to operate, is difficult to operate, and is expensive.

[Purpose of the invention] The purpose of the invention is to eliminate the drawbacks of the prior art described above and provide a vacuum tailpiece that is simple in construction and inexpensive.

[Technical means for solving the problem] In order to achieve the above purpose, the vacuum tailpiece of this invention has a body with a protruding socket for mounting a gauge and a blind or a drain valve, and a liquid passage hole. A flange is attached to one end of the valve body, and a spindle unit is attached to the other end of the valve body, and a ball scoop rod is eccentrically attached to the tip of the spindle of the spindle unit, and the ball scoop rod is disposed in the liquid passage hole. When the slope of the spindle contacts the valve seat disposed in the liquid passage hole and closes the liquid passage hole, the check ball is pressed against the ball holder with the ball scooping rod. The liquid passage hole is unblocked by moving the check ball.

[Configuration of Example] Vacuum tailpiece for liquid level gauge of this invention
As shown in FIGS. 1 and 2, in the VTP, a valve seat 16 is screwed onto a stepped portion 15 of a liquid passage hole 14 penetrating a cross-shaped main body 11 having sockets 12 and 13, and A valve body 1 has a ball holder 18 screwed to the end to receive a check ball 17, a bonnet 21 is screwed to the end of the valve body on the large diameter hole side, a spindle 22 is screwed through the bonnet, and the bonnet is opened. A gland packing 23 is press-fitted into the gap between the through hole and the spindle with a gland nut 25 which is screwed onto the bonnet via a packing gland 24, a handle 26 is attached to the end of the spindle 22 with a nut 27, and a handle 26 is attached to the end of the spindle 22 with a nut 27. 22 tip 28
It consists of a spindle unit 2 fitted with a ball scoop rod 29 whose tip is cut obliquely for moving a check ball 17 eccentrically, and a flange 3 welded to the end of the valve body 1 on the small diameter hole side.

Two of these vacuum tailpieces VTP are attached to the side wall 81 of the can body 8 that holds the liquid, and are connected to the socket 13 of the upper vacuum tailpiece VTP1.
In this case, the blind 91 is inserted between the socket 12 and the socket 12 of the lower vacuum tailpiece VTP2, and the opening 72 is inserted into the gauge body 70 having the front opening 72 with the gauge connection 71 attached at both ends through the packing 73. A cover 7 covers a glass plate 74 that closes the gauge pipe and allows the inside of the gauge pipe to be seen through.
5 and the gauge 7 attached with the U-shaped bolt 76, and connect the socket 1 of the lower vacuum tailpiece.
Attach the drain valve 92 to 2.

[Operation of the invention] Now, if the glass plate 74 of gauge 7 is damaged by some external force, check ball 1
7 is crimped onto the ball holder 18 by the pressure difference as shown by the broken line in FIG. 2 to close the liquid passage hole 14, and
Prevents liquid from flowing out and air from entering the can.

Here, the administrator found that the glass plate 74 of the gauge 7 was damaged, turned the handle 26, screwed the spindle 22, and the slope 22A of the spindle 22 was pressed against the valve seat 16 as shown in FIG. When the liquid passage hole 14 is closed, the ball scooping rod 29 eccentrically attached to the tip 28 comes into contact with the check ball 17 that is in close contact with the ball holder 18 and forces it to the wall side of the liquid passage hole 14. Move it to open it. After the repair of the glass plate 74 of the gauge 7 is completed, the handle 26 is turned to move the spindle 22 backward so that the slope 22A at the tip of the spindle 22 is aligned with the valve seat 16.
As the liquid moves further away from the can, liquid flows into the level gauge from the can body 8, and the internal pressure in the gauge becomes equal to the pressure inside the can, so the check ball 17 is placed in the position shown by the solid line in Fig. 2, and the liquid level gauge functions. There is no obstruction.

[Operation of the device] As described above, this device has a valve body with a protruding socket for mounting a gauge and a blind or a drain valve, and a flange on one end of the valve body with a liquid passage hole, and a flange on the other end. A spindle unit is attached to each end, a ball scooping rod is eccentrically attached to the tip of the spindle of the spindle unit, and a check ball is pressed into contact with a ball holder disposed in the liquid passage hole to close the liquid passage hole. When the slope of the spindle comes into contact with the valve seat disposed in the liquid passage hole and closes the liquid passage hole, the check ball, which is pressed against the ball holder by the ball scooping rod, is moved to block the liquid passage hole. Since it is configured to be unraveled, the configuration of the vacuum tailpiece is easy, and only one spindle unit is required to remove the check ball from the ball holder and close the liquid passage hole in one operation, making it inexpensive. It has the advantage of being configurable.

[Brief explanation of the drawing]

Figures 1 to 3 all show one embodiment of this invention, with Figure 1 being a side view showing the overall structure of the liquid level gauge, and Figure 2 showing the state in which the spindle valve is open. A cross-sectional view of the baquium tailpiece,
FIG. 3 is a cross-sectional view of the vacuum tailpiece with the spindle valve closed, and FIG. 4 is a cross-sectional view of a conventional vacuum tailpiece. 1... Valve body, 11... Body main body, 1
2, 13...Socket, 14...Liquid hole, 16...
...Valve seat, 17...Check ball, 18
...Ball holder, 2...Spindle unit,
22... Spindle, 28... Tip, 29...
Ball scoop rod, 3...flange, 7...gauge, 91...blind, 92...drain valve, 22A...slope.

Claims (1)

[Scope of utility model registration request] Sockets 12 and 13 for mounting the gauge 7 and the blind 91 or the drain valve 92 are provided protrudingly, and the flange 3 is mounted on one end of the body main body 11 with the liquid passage hole 14, and the spindle unit 2 is mounted on the other end, and the spindle A ball scooping rod 29 is attached eccentrically to the tip end 28 of the spindle 22 of the unit 2, and the check ball 17 that closes the liquid passage hole 14 by pressing against the ball holder 18 disposed in the liquid passage hole 14 is attached to the spindle 22. slope 22A
When the valve seat 16 disposed in the liquid passage hole 14 comes into contact with the liquid passage hole 14, the check ball 17, which is press-fitted to the ball holder 18 with the ball scooping rod 29, is moved to close the liquid passage hole 14. A vacuum tailpiece for a liquid level gauge, characterized in that it is configured to unblock.