JPS5845296B2 - hydraulic injection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic injection device suitable for cleaning the inner wall surfaces of various tanks, brewing vessels, reaction vessels, etc.

To wash the inner walls of various tanks, brewing vessels, reaction vessels, etc., a cleaning device is used that sprays a cleaning liquid, such as water, from a nozzle onto the inner walls to wash them away.

However, conventional cleaning devices only change the spray direction of cleaning water by moving the nozzle two-dimensionally, that is, two-dimensionally, which makes cleaning the entire three-dimensional interior wall surface inefficient and reduces work time. There was a drawback that it cost a lot of money.

On the other hand, if high-pressure water is used for the purpose of improving cleaning efficiency and cleaning effect, the amount of water consumed can be reduced. In the food-related field, they were avoided due to concerns about leaks, etc., and the result was successful.

This invention was made based on these circumstances,
The purpose of this is to make the injection nozzle move three-dimensionally so that the injection liquid is ejected in three directions, and the nozzle is automatically operated using the energy of the injection liquid itself. The present invention aims to provide a hydraulic injection device that is particularly effective when used in cleaning equipment, etc., which makes it possible to use high-pressure liquid without using lubricating oil or the like.

An embodiment of the present invention will be described below with reference to the drawings in which it is applied to a hydraulic cleaning device.

In FIG. 1, T is a tank such as a brewing tank or a reaction tank, and a washing device W is installed inside this tank T via a support S such as a tripod.

This washing device W is connected to a pump (not shown) via a hose or pipe H, and a high-pressure washing liquid, such as water, is supplied from the pump.

The cleaning device W is constructed as shown in detail in FIG. 2 and subsequent figures.

That is, reference numeral 1 denotes a fixed tube body supported by the support base S and disposed with the tube axis vertically, and the hose H is connected to one end of the fixed tube body 1.

A strainer 2 is housed within the fixed tube 1 and filters the washing water.

A clutch case 3a and a clutch cover 3b are connected to the other end of the solid tube 1, and a one-way clutch 4 is provided between the clutch case 3a and the clutch cover 3b.

One end of a hollow connecting pipe 5 communicating with the inside of a cylinder head 14, which will be described later, is connected to the clutch case 3a.

The connecting pipe 5 is rotatably attached to the clutch case 3a via ball bearings 6, and is restricted by the one-way clutch 4 so that it can only rotate in one direction. .

Further, a bearing inner race 7 is integrally connected to the clutch cover 3b. It has a liquid chamber 9 that communicates with the inside of the liquid chamber 8.

Also, this bearing inner race 7 has a movable tube body 10.
One end of the two is rotatably connected via a ball bearing 11.

This movable tube body 10 is constructed by connecting a seal housing 12, a main cylinder 13, and a cylinder head 14 along the same axis. A pressure balancing chamber 15 communicating with the liquid chamber 9 is formed in between.

Also, inside the main cylinder 13, there is a partition wall 16 and a separating member 1.
A plunger working chamber 18 is formed by 7, and a flange member 20 formed on the plunger 19 is slidably inserted into the plunger working chamber 18.

One chamber 18a of the plunger operating chamber 18 divided by this flange member 20 is communicated with a control valve 22 via a flow passage 21 formed in the wall of the movable tube body 10, and the other chamber 18b is It is communicated with the atmosphere through the atmosphere opening hole 23.

The plunger 19 is slidably attached to the outside of the connecting tube 8 so as to be freely displaceable in the axial direction and rotatably relative to the connecting tube 8, and one end of the plunger 19 is introduced into the liquid chamber 9. and the other end is located inside the cylinder head 14.

And the end face of this plunger 19 that faces inside the liquid chamber 9,
In other words, the pressure receiving surface 19a is formed to be smaller than the end surface existing in the cylinder head 14, that is, the pressure receiving surface 19b, and when the same hydraulic pressure is applied to both end surfaces 19a and 19b, the plunger 19 moves to the fixed pipe body 1. It is adapted to be pressed and biased in the direction.

Further, steel balls 24 are rotatably provided on the plunger 19, and these steel balls 24 have threaded portions 24b carved on the outer surface of the other end of the connecting pipe 8. is engaged with the ball screw structure.

Further, an extension part 25 is integrally provided at the other end of the plunger 19, and this extension part 25 is slidably guided in the axial direction by a guide part 26 formed on the inner surface of the cylinder head 14. Therefore, the guide portion 26 is restrained by the cylinder head 14 and is prevented from rotating relative to the cylinder head 14.

Therefore, when the plunger 19 rotates, the cylinder head 14, in other words, the movable tubular body 10, is rotated integrally.

The inner surface of the extension part 25 is a flat surface, and rack teeth 27, 27 as shown in FIG. 3 are formed on this flat surface, and are spaced apart in the tube axis direction as shown in FIG. Engaging protrusions 28a and 28b are formed.

The end face of the cylinder head 14 having such a configuration is closed with a closing plate 29, and this closing plate 29 has a through hole 30.
It is formed.

The switching device of the present invention is configured inside the closing plate 29.

That is, 31 is a fixed plate, and this fixed plate 31 is formed with a valve chamber 32 connected to the through hole 30.

Further, one end of a sub-cylinder 33 is fluid-tightly connected to the fixed plate 31, and the other end of the sub-cylinder 33 is closed by a blind plate 34.

A sub-piston 35 is slidably inserted into the sub-cylinder 33 (in this case, a sub-piston 35 is inserted into the sub-piston 35).
A valve body 36 that slides within 2 is integrally connected.

Inflow holes 37, 37 and connection holes 38.degree. 38 are formed in the side wall of this sub-cylinder 33, spaced apart in the axial direction.

Furthermore, a guide hole 39 and a communication hole 40 are formed in the valve chamber 32 and spaced apart in the axial direction.The guide hole 39 communicates with the inside of the cylinder head 14 and always presses the valve body 36 in one direction. At the same time, the communication hole 40 communicates with the flow path 21 via the control valve 22.

The outer diameter of the sub-piston 35 in the sub-cylinder 33 is larger than the outer diameter of the valve body 36, and the pressure receiving area is larger than that of the valve body 36.
It is formed so that it is approximately twice as large.

Note that the sub-piston 35 is provided with a relief hole 41 formed along the axial direction.

A switching sleeve 42 is attached to the outside of the sub-piston 35 so as to be slidable in the axial direction, and when the switching sleeve 42 is displaced to one side, the switching sleeve 42 is provided with an inflow hole that is connected to the one side when the switching sleeve 42 is displaced to one side. An introduction hole 43 is formed to communicate with the blind plate 37, and at this time, the sub piston 35 is pressed toward the blind plate 34 side.

Further, this switching sleeve 42 is provided with a bypass passage 44, and this bypass passage 44 is connected to the switching sleeve 42.
When the two pistons are displaced to the other side, the connecting holes 38 and 38 are brought into communication with each other so that the hydraulic pressure acting on the sub piston 35 is canceled out.

An arm 45 is integrally extended to this switching sleeve 42, and this arm 45 is connected to the extension portion 2 of the plunger 19.
An engaging portion 46 is formed to be pushed by either one of the engaging protrusions 28a and 28b formed in the second embodiment.

Furthermore, a rotary shaft 50 passes through the cylinder head 14 so as to be perpendicular to the tube axis thereof.

This rotating shaft 50 has pinion teeth 51 that engage with rack teeth 27, 27 formed on the extension portion 25 of the plunger 19.
．． 51 is formed.

Both ends of the rotating shaft 50 extend outside the cylinder head 14 through the bearings 52, 52, and each outer end has a nore:)L<J letter -53...
It is equipped with...

This nozzle holder 53 has, for example, three injection nozzles 54 in a radial direction centered on the rotating shaft 50, and is configured to rotate together with the rotating shaft 50.

The injection ports 55 of the injection nozzles 54 communicate with the inside of the cylinder head 14 via a through hole 56 formed in the nozzle holder 53 and the rotating shaft 50.

The effect of the embodiment due to such stealing will be explained.

In the state shown in FIG. 2, when high-pressure cleaning water is introduced into the fixed pipe body 1 through the hose H, the cleaning water is led to the cylinder head 14 through the connecting pipe 5.

The washing water then flows through the through hole 8 of the connecting pipe 5 into the liquid chamber 9.
and presses one pressure receiving surface 19a of the plunger 19 in the liquid chamber 9, and pressurizes the other pressure receiving surface 19b of the plunger 719 in the cylinder head 14.

Further, the cleaning water in the cylinder head 14 is guided into the valve chamber 32 through the guide hole 39 in the switching device, and the introduction hole 43 of the switching sleeve 42 and the inflow hole 37 of the sub-cylinder 33 communicate with each other. Therefore, it flows into the sub cylinder 33.

Since the pressure-receiving area of the sub-piston 35 is larger than that of the valve body 36, the sub-piston 35 remains displaced in one direction in the axial direction, that is, downwardly, as shown in FIG. It is connected to the outside through.

Therefore, since the control valve 22 and the flow path 21 communicate with the outside air through the communication hole 40, the chamber 1 of the plunger operating chamber 18
8a is also open to the atmosphere.

Furthermore, the cleaning water inside the cylinder head 14 passes through the through hole 56 of the rotating shaft 50 and reaches the injection ports 55 of the injection nozzles 54 .
..., and is constricted by the injection port 55 and ejected in the radial direction.

However, in such a state, the difference in area between the pressure receiving surfaces 19a and 19b of the plunger 19 causes the plunger
9 is pushed in the direction of arrow A, and as a result, plunger 19 is slid down in the direction of arrow A.

However, the plunger 19 is engaged with the connecting pipe 5 by a ball screw structure, and since the connecting pipe 5 is prevented from rotating in one direction by the one-way clutch 4, the plunger 19 is eventually engaged with the connecting pipe 5. against arrow B
It is displaced in the direction of arrow A while rotating in the direction.

The displacement of the plunger 19 in the direction of the arrow A is caused by the rotation shaft 50 via the rack teeth 27, 27 and the pinion teeth 51, 51.
is rotated in the direction of arrow C, so that the injection nozzle 55 rotates about the rotation axis 50.

At the same time, the rotation of the plunger 19 in the direction of arrow B is
Since the extension part 25 is engaged with the guide part 26, the entire movable tubular body 10 is rotated integrally with the plunger 19 via the cylinder head 14, so that the movable tubular body 10 also rotates in the direction of arrow B. Therefore, the injection nozzle 54
will rotate around the illustrated tube axis.

Therefore, the injection nozzle 54 ultimately turns in the direction of arrow B and rotates in the direction of arrow C at the same time, thereby spraying cleaning water in a three-dimensional direction.

When the plunger 19 attempts to complete its displacement in the direction of arrow A, one of the engaging protrusions 28a provided on the extension part 25 of the plunger 19 engages the engaging part 4 of the switching sleeve 42.
6 to slide the switching sleeve 42 in the direction of arrow A.

Then, communication between the introduction hole 43 of the switching sleeve 42 and the inflow hole 37 of the sub-cylinder 33 is cut off, and the compartment divided by the sub-piston 35 in the sub-cylinder 33 is connected to the bypass passage 44 and the connecting hole 38°. They communicate with each other via 38.

Therefore, the pressure of the cleaning water acting on the sub piston 35 itself becomes the same pressure in both chambers and is balanced.
5, the valve chamber 32 is connected to the guide hole 39.
Since it communicates with the inside of the cylinder head 14 through
6 is slid in the direction opposite to the direction of arrow A, that is, upward in FIG.

When the valve body 36 rests on the closing plate 29, the guide hole 39 is connected to the communication hole 40 via the valve chamber 32.

This state is shown in FIG. 4, where the cylinder head 1
The cleaning water in the plunger chamber 4 passes through the control valve 22 through the guide hole 39 and the communication hole 40 of the valve chamber 32, and acts on one chamber 18a of the plunger operating chamber 18 through the flow path 21.

Therefore, in the plunger 19, the pressure of the cleaning water is applied to the pressure receiving surface 19a and the flange member 20, pushing the plunger 19 in the opposite direction to the direction of arrow A, and this force is applied to the other pressure receiving surface 19b of the plunger 19. than the pressure acting on
This force is large due to the large pressure receiving surface of the flange member 20, and therefore causes a force that causes the plunger 19 to move upward in the direction opposite to the direction of arrow A, that is, in the illustration.

When the plunger 19 attempts to rise, the connecting pipe 5 engaged with the plunger 19 through the ball screw structure attempts to rotate relative to the plunger 19.

In this case, since the connecting pipe 5 is allowed to rotate in the direction of arrow B by the one-way clutch 4, the connecting pipe 5 rotates in the direction of arrow B and the plunger 19 does not rotate but rotates in the direction of arrow A. On the other hand, performs only linear motion.

When the plunger 19 moves in the direction opposite to the direction of arrow A, the rotating shaft 50 is rotated in the direction opposite to the direction of arrow C by the rack teeth 27.27 and pinion teeth 51.51.

Therefore, the injection nozzles 54 only rotate in the direction opposite to the direction of arrow C, and in this case, the movable tubular body 10 does not rotate, so that injection is performed in a two-dimensional direction.

When the plunger 19 reaches the end of its upward movement, the other locking protrusion 28b formed on the extension part 25 of the plunger 19
Since the engaging portion 46 of the switching sleeve 42 is pushed up, the switching sleeve 42 is raised and returns to the state shown in FIG. 2.

Therefore, in the injection nozzle 55..., arrow C
Simultaneously with the rotation in the direction of arrow B, the plunger 19 rotates in the direction of arrow B, and as the plunger 19 moves in the opposite direction, it rotates in the direction opposite to arrow C, and this operation is repeated.

As a result, the inner surface of the tank T in Fig. 1 is uniformly washed all around by the washing water sprayed from the nozzles 54, so the washing effect is extremely good, and the washing work is highly efficient. becomes.

Moreover, according to this device, the plunger 19, the rotating shaft 50, and the movable tube body 10 are cleaned by using the pressure of the cleaning water itself.
Since the nozzles 54 are driven through the nozzle 54, there is no need for any other driving device using electrical energy, and if the liquid-tight structure is made robust, high-pressure cleaning water can be used. Since lubrication can be performed using only water, even if leakage occurs, the inside of the tank T will not be contaminated, making it especially convenient for cleaning food-related tanks and vessels.

Even if high-pressure washing water is used, the pressure balance chamber 15 balances and cancels out the load in the Nulast direction.
This allows the movable tubular body 10 to rotate smoothly.

Moreover, since the nozzles 54 rotate in the opposite direction, dirt adhering to the cleaning surface is easily removed since it is also cleaned from the opposite direction, compared to cleaning from only one direction.

In the above embodiment, the connecting tube 5 is rotated in only one direction by the one-way clutch 4, so the movable tube body 10 only rotates intermittently in the direction of arrow B. 5 is integrally fixed to the fixed tube body 1 side, the movable tube body 10 can also perform reciprocating rotation with the reciprocating movement of the plunger 19, and even such a usurpation can be carried out, so the above-mentioned implementation is possible. The examples are not intended to be limiting.

According to the invention described in detail above, the injection nozzle can be made to perform rotational movement around the tube axis as well as rotational movement around the axis perpendicular to the tube axis, so three-dimensional movement is possible. Therefore, the injection liquid can be emitted in three directions.

Moreover, since the movement of this nozzle is performed by the energy of the sprayed liquid itself, no other electrical or mechanical power is required, making it extremely difficult to use in environments where the surrounding atmosphere is filled with moisture, such as in cleaning equipment. It's convenient.

It also has various advantages, such as extremely high injection efficiency because high-pressure liquid can be used.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention applied to a cleaning device,
Fig. 1 is a diagram explaining its usage, Fig. 2 is a sectional view of the washing device, Fig. 3 is a partially sectional side view, and Fig. 4 is a sectional view of the washing device.
FIG. 7 is a cross-sectional view showing another operating state in the figure. DESCRIPTION OF SYMBOLS 1...Fixed pipe body, 4...One-way clutch, 5...Connecting pipe, 10...Movable pipe body, 13... Main cylinder, 14...Cylinder head, 19...Plunger, 24...
... steel ball (ball screw structure), 24b ... threaded part (ball screw structure), 27 ... rack tooth,
32... Valve chamber (switching device), 33...
Sub-cylinder (switching device), 35... Sub-piston (switching device), 42... Switching sleeve (switching device), 50... Rotating shaft, 51... ...Pinion tooth, 54...Nozzle.

Claims (1)

[Claims] 1 A connecting tube is connected to the fixed tube, and one end of the movable tube is rotatably connected to the connecting tube, and a plunger that is displaced in the axial direction with respect to the connecting tube and rotates with this displacement is connected to the connecting tube. This plunger is installed in the movable tube and is connected to the movable tube so that only rotational movement is transmitted to the movable tube so that the movable tube rotates integrally. A liquid is introduced into the other end of the movable tubular body and pressurized by this jetted liquid, and at the end of the axial displacement of the plunger, a switching device formed inside the movable tubular body is switched by the plunger. is configured to reverse the direction of pressure applied to the plunger of the injection liquid to press and displace the plunger in the opposite direction, and is attached to the movable tube through a rotating shaft perpendicular to the tube axis direction, This rotating shaft is connected to drive one rotation according to the axial displacement of the plunger, and an injection nozzle for ejecting the injection liquid guided from the movable tube is attached to the outer end of the rotating shaft. 1. A hydraulic injection device, characterized in that it is mounted so as to eject in the radial direction of a shaft.