JPS5815739Y2 - Drive device for sleeve valve with cleaning device - Google Patents

Description

[Detailed description of the invention] This invention raises, lowers, and rotates the valve body of a sleeve valve equipped with a cleaning device.

This relates to a drive device.

As a sleeve valve with a cleaning device, the applicant of the present application has proposed the one shown in FIG. 2 (Utility Application No. 52176439).

This sleeve valve has a fluid port 2 in the measuring part of the valve box 1, guide cylinders 3 and 4 in the upper and lower parts, respectively, a fluid outlet 5 at the lower end of the lower guide cylinder 4, and 1 and into both guide cylinders 3 and 4, a sleeve-shaped valve body 6 is inserted,
A valve chamber 9 is formed between the inner wall of the valve box 1 and the valve body 6, and the valve body 6 is inserted into both guide cylinders 3 and 4 in a watertight manner.
The upper end is closed and the lower end is opened, and a large number of valve lowers are provided on the circumferential surface, and a valve shaft 13 that can be raised and lowered and rotated is connected to the valve body 6, and - The surface of the valve body 1 is moved forward and backward with respect to the valve body 6, and the valve body 6 is
A receiving box 8 having an opening periphery 12 in close contact with the outer circumferential surface of the valve box 8 is provided, and a foreign matter removal pipe 10 having an on-off valve 11 is communicated with the receiving box 8, and this is drawn out to the outside of the valve box 1 while maintaining watertightness. It has a structure.

The sleeve valve of this structure allows water flowing in from a fluid port 2 provided on the side of the valve body 1 to flow into the valve body 6 through a large number of valve ports I provided in the valve body 6 inside the valve body 1. The fluid is discharged from the fluid outlet 5 of the valve box 1 through the opening at the lower end, and the flow rate is adjusted by moving the valve body up and down.

In addition, when the valve lower is clogged with foreign matter and the valve body 6 needs to be cleaned, the foreign matter removal pipe 10 is moved forward so that the opening periphery of the receiving box 8 at its tip is brought into close contact with the outer periphery of the valve body 6, and then While water continues to flow in from the fluid volume 2, the valve 11 is fully opened or set to an appropriate opening degree.

In this state, the water pressure inside the valve body 6 is higher than the pressure inside the receiving box 8 which is in close contact with the outer periphery of the valve body 6, so water enters the valve body 6 from the inlet 2 through the valve chamber 9. Water flows into the receiving box 8 from the valve lower of the valve body 6 facing the receiving box 8, and at this time,
The foreign matter clogged in the valve lower is washed out and flowed out from inside the receiving box 8 through the foreign matter removal pipe 10, the valve 11, and the pipe 10'.

In this way, by rotating the valve body 6, the entire circumference of the valve body 6 is cleaned, and then by raising or lowering the valve body 6 and rotating the valve body 6 further, all parts of the valve body 6 are cleaned. is washed.

The valve body 6 of the valve with cleaning device as described above,
As a drive device for raising, lowering, and rotating, the one shown in FIG. 3 can be considered.

That is, the valve shaft 13 fixed to the upper end of the valve body 6 passes through the upper end top plate 25 of the guide cylinder 3, and the top plate 25-+r-.

It passes through the machine box 31 of the valve body rotating device A fixed to the valve body and the machine box 32 of the valve body lifting device B and exits upward.

Inside the lower machine box 31 is a worm 33 that can be freely rotated in forward and reverse directions by a handle or a motor. 35 are slidably fitted.

Therefore, the valve stem 13 can move in the axial direction with respect to the worm wheel 34, but the rotation thereof is the same as that of the worm wheel 34.

A worm 36 which can be freely rotated forward and backward by a handle or a motor is also attached to the upper machine box 32, and a worm wheel 3γ is meshed with the worm 36.

A rotary cylinder 38 is loosely fitted into the central hole of the worm wheel 37, and the female thread on the inside of the rotary cylinder 38 is screwed into the male thread on the outside of the valve shaft 13.

Further, a spline portion 39 is provided on the outside of the upper half of the rotary cylinder 38, and a clutch member 40 is slidably fitted therein.

This clutch member 40 can be raised and lowered by an operating lever 41 pivoted to the machine box 32, and a clutch pawl 42 that can be used freely is formed at the lower part of the clutch member 40 and the upper part of the worm wheel 32.

Therefore, when moving the valve body 6 up and down, when the clutch member 40 is lowered and the clutch pawl 42 is engaged, turning the worm 36 with the handle or motor causes the worm wheel 37 to rotate, and the rotation causes the clutch pawl to rotate. 4
2 to the clutch member 40, and the spline portion 3
The rotary cylinder 38 is rotated via the worm 9, and at this time the lower worm wheel 34 is engaged with the worm 33 and does not rotate, and the valve shaft 13, which is engaged with the worm 33 through the spline portion 35, is rotated.
Therefore, as the rotary cylinder 38 rotates, the valve shaft 13 moves up and down together with the valve body 6 through the female screw engagement.

On the other hand, when rotating the valve body 6, the clutch member 40 is raised using the lever 41, the clutch pawl 42 is removed, and the worm wheel 34 is rotated when the lower worm 33 is rotated using a handle or a motor, and the spline portion 35 is rotated. Through this, the valve shaft 13 rotates once, and the valve body 6 rotates together with this.

However, in the drive device having the above structure, it is necessary to provide separate drive sources, worms, and worm foils for raising and lowering the valve body 6 and for rotating the valve body 6, so that one drive device becomes larger and the number of parts increases. There is a problem of high product cost.

Therefore, this invention aims to reduce the size of the drive device by using the same 7 drive sources, worms, and worm foils to raise, lower, and rotate the valve body of a sleeve valve with a cleaning device. That is.

The technical means of this invention to solve the above technical problem are as follows.

That is, in the sleeve valve with a cleaning device, a machine box is provided above the valve box, the valve shaft is passed through the machine box upwardly, a male thread is formed on the outer peripheral surface of the valve shaft, a worm is provided at the lower part of the machine box, and the worm is inserted into the machine box. A rotatable worm wheel is engaged with the worm wheel, a rotary cylinder is fixed in the center hole of the worm wheel, and the rotary cylinder is provided in the machine box so as to be rotatable but cannot be raised or lowered, and the internal thread formed on the rotary cylinder and the valve The male thread of the shaft is screwed through, and a cylindrical body is provided at the top of this rotating cylinder.
This cylindrical body is mounted on a valve shaft that can be raised and lowered and rotated, and a clutch member is provided on the outside of this cylindrical body via a spline.
A clutch pawl that can be freely loaded is formed on the lower part of the clutch member and the upper part of the worm wheel, and a hooking part that can be freely loaded is formed on the upper part of the clutch member and the upper part of the machine case.

The effects of the above technical means are as follows.

(1) Raise the lifting clutch member of the valve body, and the engagement of the clutch pawl is separated.
In addition, when the engaging part is engaged, when the worm is turned by the handle or the motor, the rotary cylinder rotates together with the worm wheel, and at this time, the rotation of the cylinder is prevented by the engaging part of the machine box via the latch member, Since the valve shaft, which is non-rotatably mounted on the cylinder, also does not rotate, the valve shaft moves up and down together with the valve body through the female screw engagement as the rotary cylinder rotates.

(2) Turning of the valve body When the clutch member is lowered and disengaged from the engagement part, and the clutch pawl is engaged, when the worm is turned by the handle or motor, the worm wheel turns and its rotation is stopped. The force is transmitted to the clutch member via the clutch pawl, the valve shaft rotates via the cylinder, and the valve body rotates.

Therefore, with the above technical means, the lifting and rotating operations of the valve body can be performed by the same driving source, worm, and worm foil, and the single driving device can be downsized and the number of parts can be reduced. .

Next, the unique effect of this invention is that when the valve body rotates, the valve stem rotates together with the worm wheel, clutch member, cylinder body, and rotating cylinder, so the valve stem does not move up and down at all. Without,
During flow rate adjustment, the opening degree of the valve body should not change even if cleaning is performed.

An embodiment of this invention will be described below with reference to FIG.

13 is a vertical valve shaft whose lower end is fixed at the center of the upper end of the valve body 6;
Reference numeral 14 denotes a support frame fixed to the upper end of the guide tube 3 on the valve shaft 1, and its two ends are cylindrical and a machine box 15 is fixed to the upper end.

A vertical rotary cylinder 16 is mounted in the center of the machine box 15 so as to be rotatable but cannot be raised or lowered, and a female thread is formed in the rotary cylinder 16, and a female thread is formed in the upper part of the valve shaft 13. The male screws screwed together.

Further, a worm wheel 17 is fixed to the outside of this rotary cylinder 16 by means such as a key, and this worm wheel 17
As a result, a worm 18 rotatably attached to the machine box 15 engages with the machine box 15, and the worm 18 can be freely rotated forward and reverse from the outside of the machine box 15 by a handle or a motor.

Reference numeral 19 denotes a cylinder rotatably mounted inside the machine box 15 so as to be located above the rotary cylinder 16.
3 are fitted so that they can be raised and lowered, and the valve shaft 13 and the cylinder body 19 are rotated together by a slide key.

Reference numeral 20 denotes a clutch member fitted to the outside of the cylindrical body 19, and this member 20 and the cylindrical body 19 are fitted together by splines so that they rotate together and are freely movable in the axial direction.

Further, a clutch pawl 21 is provided at the lower part of this member 20 and the upper part of the worm wheel 17, which engages when the member 20 descends, and separates when the member 20 ascends. It is designed to be raised and lowered.

An annular engaging portion 24 is provided at the bottom of the top plate 23 of the machine box 15.

Serrations are formed on the inside of this engaging portion 24 and on the upper outer periphery of the clutch member 20, which engage with each other when the member 20 is raised and separate when the member 20 is lowered.

The embodiment has the above configuration, and when the clutch member 20 is raised as shown in FIG. 1, the member 20 engages with the engaging portion 24 and does not rotate, and neither the cylinder body 19 nor the valve shaft 13 rotates. .

At this time, the clutch pawl 21 is disengaged.

Therefore, in this state, the worm 1 is heated by the handle or motor.
When turning 8, the worm wheel 17 turns, but the valve shaft 13 does not turn.

Therefore, the valve shaft 13 is raised and lowered through the screw engagement between the male thread of the valve shaft 13 and the outer thread of the rotary cylinder 16, and the valve body 6 is raised and lowered, thereby changing the flow rate.

In this way, the valve body 6 is adjusted to the desired opening degree, and while water is being passed through at a predetermined flow rate, if suspended matter in the water clogs the through hole 7 and the flow rate falls below the target value, the discharge pipe is opened while the water is still passing through. 10
is moved forward to bring the peripheral edge 12 of the receiving box 8 into close contact with the outer periphery of the valve body 6, and at the same time, the valve 11 is opened.

In this way, the inside of the receiving box 8 communicates with the outside and becomes low pressure, and the valve body 6
Since the water pressure inside becomes higher, when the water inside the valve body 6 flows into the receiving box 8 from the through hole 7, floating matter clogging the through hole 7 is washed away and discharged through the discharge pipe 10.

In such a cleaning operation of the valve body 6, in order to clean all the through holes 7 of the valve body 6, the valve body 6 must not only be moved up and down but also rotated.The rotation of the valve body 6 is as follows. Let's do it.

That is, by turning the lever 22 upward from the position shown in FIG. 1, the clutch member 20 is lowered and its upper end is disengaged from the engaging portion 24, and the member 20 and the clutch pawl 21 of the worm wheel 17 are engaged.

When the worm 18 is rotated in this state, the worm wheel 17 is rotated, the clutch member 20 is rotated via the clutch pawl 21, the cylinder body 19 is rotated via the spline, and the valve shaft 13 is rotated via the slide key.

At this time, the rotary cylinder 16 as well as the worm wheel 17 also
Since the valve body 6 rotates together with the valve body 3, the valve body 6 does not move up and down but rotates.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional front view of an embodiment of the device of the present invention, FIG. 2 is a vertical sectional front view of a sleeve valve implementing the device of the present invention, and FIG. 3 is a vertical sectional front view of a conventional device. 13...Valve shaft, 15...Machine box, 16.
... Rotating cylinder, 17 ... Worm foil,
18... Worm, 19... Cylindrical body, 2
0... Clutch member, 21... Clutch pawl, 24... Engaging portion.

Claims (1)

[Scope of utility model registration request] Inside the valve box, which has a fluid inlet on the side and a fluid outlet on the bottom,
A cylindrical valve body with a number of valve ports perforated on its circumferential surface is inserted so as to be able to move up and down and rotate, a valve shaft is connected to the valve body, and a valve port cleaning device is installed in the valve box facing the fluid inlet. In the sleeve valve, a machine box is provided above the valve box, the valve shaft is passed through the machine box upwardly, and a male thread is formed on the outer peripheral surface of the valve shaft,
A worm is provided at the bottom of the machine box, a rotatable worm wheel is engaged with the worm, and a rotary cylinder is fixed to the center hole of the worm wheel, and the rotary cylinder is installed in the machine box so that it can rotate freely but cannot be raised or lowered. , a female thread formed on the rotary cylinder and a male thread of the valve shaft are screwed together and passed through, a cylinder is provided on the upper part of the rotary cylinder, this cylinder is attached to the valve shaft so that it can be raised and lowered but not rotated; A clutch member is provided on the outside of the body via a spline, and a detachable clutch r'6 is formed at the lower part of this clutch member and the upper part of the worm wheel, and a clutch r'6 is formed which can be engaged and detached from the single part of the clutch member and the upper part of the machine case. A driving device for a sleeve valve with a cleaning device that has a removable engaging part.