JP4638267B2 - High pressure washer strainer - Google Patents

Description

  The present invention relates to a strainer of a high-pressure washing apparatus that can prevent a filter member of a strainer of a high-pressure washing machine from being clogged and causing a decrease in water absorption capability or failure of a pump.

In recent years, high-pressure washing machines have been used for cleaning various facilities such as factories.
In general, a high pressure washer presupposes the supply of clean water, so the capacity is small even if a strainer is attached.
However, the water used for washing is not necessarily fresh water, and in the current situation, various foreign substances such as fine sand are often mixed in water from rivers, reservoirs or lakes.

  For this reason, the strainer's filtration member is clogged in a short time, and it becomes impossible to obtain a sufficient amount of water supply or pressure from the pump. It has occurred.

Accordingly, in consideration of the above fact, a pump device for removing foreign matter trapped by the strainer filtration member and discharging the remaining water returning from the pump to the inside of the strainer for washing the strainer and its strainer are disclosed in 264399 has already been proposed.
In this strainer, a guide plate is fixed inside the strainer, and surplus water from the pump hits and diffuses into this guide plate to form a water flow that is guided to the filter. It is small, has a limited cleaning range, and has problems with efficiency.
JP-A-11-264399

  In view of the above, the present invention prevents the clogging of the filtration member by washing foreign matter such as fine sand captured by the strainer's filtration member at a high pressure with residual water refluxed from the pump and efficiently removing it. It is an object of the present invention to provide a strainer for a high-pressure washing apparatus that can prevent a decrease in water absorption capacity and failure.

In order to solve the above-mentioned problem, the strainer of the high-pressure washing apparatus according to the first aspect of the present invention is a high-pressure washing machine that performs washing by injecting high-pressure water generated by driving a pump with a driving source from the tip of a washing gun. A nozzle that is connected to a water absorption hose connected to the pump and discharges the remaining water returning from the pump to the inside and injects the remaining water toward the filtering member is provided inside the filtering member to be rotatable. In the strainer in which the peripheral side filtration member is washed by the residual water, the upper surface of the strainer is provided with a residual water inlet and a water inlet opening in the strainer, and the water inlet is provided in the center. A hollow portion of the inner cylinder provided in the strainer communicates with the water inlet, and a large-diameter base cylinder portion having an opening for water absorption on the peripheral side at the lower portion of the inner cylinder and extending outward is provided. And the inner cylinder on the base cylinder An outer cylindrical body is rotatably provided on the outer side with a gap, and a nozzle is provided on the outer peripheral surface of the outer cylindrical body so that the hollow portion of the outer cylindrical body communicates with the injection port. The outer cylinder body is formed with an inclined portion that extends upward at the upper portion of the outer cylinder, and the spillage inlet is disposed on the opening of the inclined portion. is there.

  With such a configuration, while surplus water is jetted from the nozzle vigorously, the nozzle rotates during jetting, so it becomes possible to wash the entire circumferential side of the filtration member with surplus water in a high pressure state. It is possible to remove the adhered foreign matter that causes clogging of the entire surface on the circumferential side.

And since water absorption is performed from the opening part for water absorption of the lower part of an inner cylinder, a water absorption position becomes low, the effective use of water quantity is possible, and initial suction becomes favorable with water pressure.
Surplus water is injected from the nozzle through the hollow portion between the outer cylindrical body and the inner cylindrical body from the nozzle to the filtration member, and adheres causing clogging of the entire circumferential side of the filtration member. Efficiently removes foreign matter.
Moreover, since the nozzle rotates due to the reaction force of the remaining water , a separate power source for rotating the nozzle is not required, and the cost is low.

Then, the strainer of the present invention the high-pressure cleaning device according to claim 2, wherein the collision in the strainer of the high-pressure cleaning device according to claim 1, such that the nozzle is the tip approaches the filter member, from the central portion toward the filter member side It is characterized by being provided.

  By setting it as such a structure, residual water can be injected in a high-pressure state vigorously from a close distance to the filtration member.

Next, the strainer of the high-pressure washing apparatus according to the third aspect of the invention is characterized in that in the strainer of the high-pressure washing apparatus according to the first or second aspect, a plurality of nozzles are provided with a difference in height. is there.

  By setting it as such a structure, it can wash | clean by flushing a surplus water in the wide range all over the circumference side whole surface of a filtration member uniformly.

According to the first aspect of the present invention, the remaining water recirculated from the pump of the high-pressure washing machine is ejected from the nozzle at a high pressure, and the nozzle rotates during the injection. It is possible to remove the adhering foreign matter that causes clogging of the entire peripheral side.
As a result, a fine filtration member can be employed, and foreign substances such as fine sand can be captured, and the pump's water absorption capability is reduced due to the generation of negative pressure due to clogging of the filtration member, and the pump and drive. It is possible to effectively prevent the occurrence of source failure and damage.
Further, compared with a conventional guide plate fixed in the strainer, the water pressure at the time of cleaning is large and the cleaning range can be widened.
Further, there is no need to frequently remove the strainer for cleaning, and the water absorption work efficiency can be improved.

And since water absorption is performed from the opening part for water absorption of the lower part of an inner cylinder, it has the effect that a water absorption position becomes low, water quantity can be used effectively, and initial suction becomes favorable with water pressure.
Further, since the remaining water is led from the inclined portion of the outer cylinder through the hollow portion between the outer cylinder and the inner cylinder to the nozzle and into the narrow space, the nozzle is vigorously injected from the nozzle to the excess member, Has the effect of cleaning.
Further, since the nozzle rotates due to the reaction force of the remaining water, there is an effect that a power source for rotating the nozzle is not required separately and the cost is low.

According to the second aspect of the present invention, it is possible to inject surplus water with a high pressure in a vigorous and high-pressure state from a close distance over the entire circumferential side of the filtration member, and to effectively remove foreign matter adhering to the filtration member. Have

According to the third aspect of the present invention, the entire surface on the circumferential side of the filtration member can be uniformly sprayed and washed over a wide area, and foreign substances adhering to the filtration member can be efficiently removed.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a block diagram showing the entire apparatus using a strainer of a high-pressure washing apparatus according to the present invention of claim 2, FIG. 2 is a front view of the strainer, and FIGS. 3 and 4 are sectional views of the strainer. .

  As shown in FIG. 1, the high-pressure washing apparatus includes a high-pressure pump 1, a drive source 2 such as a motor or an engine that drives the pump 1, a water absorption hose 3 that is connected to the water absorption side of the pump 1, and a water absorption hose 3. A strainer 4 connected to the suction port on the front end side of the water, a high pressure water discharge hose 5, a cleaning gun 6 attached to the front end of the high pressure water discharge hose 5, and a waste water hose 7. The discharge port on the front end side is connected to the strainer 4.

Then, after the strainer 4 is put into a river, a reservoir, a reserve tank or the like and the pump 1 is driven, water is sucked from the water absorption hose 3 through the strainer 4 by the firing operation of the cleaning gun 6, and passes through the pump 1. Water is supplied from the high-pressure water discharge hose 5 to the cleaning gun 6 and sprayed.
Further, when the cleaning gun 6 is stopped, the water injection stops, the amount of remaining water in the pump 1 increases, and the remaining water from the pump 1 returns to the strainer 4 from the remaining water hose 7 and is discharged at a high pressure. The filter member 14 on the peripheral side of the strainer is washed by the discharged residual water.

Next, strainer 4 used in such high-pressure cleaning apparatus, the circular lower groove 9 is formed in the peripheral edge portion of the circular bottom plate 8, a predetermined inside of the lower groove 9 along the lower groove 9 A side column 10 is erected at an interval of, and a circular ceiling plate 11 is fixed to the upper portion of the side column 10 with screws 12.

The ceiling plate 11 is formed thicker than the bottom plate 8 except for the peripheral end portion, and a circular upper groove 13 having the same diameter and depth as the lower groove 9 is formed on the lower surface of the ceiling plate 11 at a position opposite to the lower groove 9. ing.
And the cylindrical filtration member 14 is provided between the upper groove | channel 13 and the lower groove | channel 9 in contact with the side support | pillar 10 in order to prevent the deformation | transformation while fitting the upper and lower ends.
The filtration member 14 is preferably an 80-100 mesh stainless steel wire mesh.
The filter member 14 is not limited to a wire mesh as long as it has a filtration function, and may be made of other materials such as cloth or other structures. Further, the shape of the strainer 4 may be any shape such as a horizontal type and a vertical type.

A spillage inlet 15 that opens to the inside of the strainer 4 is provided at the center of the ceiling plate 11, and a water inlet 16 that is larger in diameter than the spillage inlet 15 is formed in the ceiling plate 11 on the side of the spillage inlet 15. Is open inside the strainer 4.
A discharge port of the sewage hose 7 is connected to the spillage introduction port 15 by a connector (not shown) or the like, and a suction port of the water suction hose 3 is connected to the water suction port 16 by a connector (not shown) or the like. The

In addition, a circular upper recess 17 is formed at the center of the lower surface of the ceiling plate 11, and a circular lower recess 18 having the same diameter and depth as the upper recess 17 on the upper surface of the bottom plate 8 at a position facing the upper recess 17. Is formed.
And the both ends are fitted between the upper recessed part 17 and the lower recessed part 18 so that the center cylinder 19 can rotate in a horizontal direction.

The upper end port of the hollow portion 20 of the central cylinder 19 communicates with the spillage introduction port 15 and has the same diameter. A tapered cylindrical nozzle 21 that projects from the peripheral side surface of the central cylinder 19 outward in the radial direction is provided on the outside of the central cylinder 19 so as to communicate with the hollow portion 20.
The injection port 22 at the tip of the nozzle 21 is located in the vicinity of the side column 10 so as to approach the filtration member 14.
Three nozzles 21 are provided in three steps in the vertical direction of the central cylindrical body 19 and are arranged radially at intervals of 120 degrees in the circumferential direction, and the side portions near the tip of each nozzle 21. Is provided with a rotation outlet 23 for rotation.
The spilled water is ejected from the squirting hole 23, and the squirting hole 23 is provided so as to give a rotational force to the central cylinder 19 by the reaction force of the jet of pressurized sewage.
The number of nozzles 21 is not limited to three, but may be one or three or more.

Next, the operation when the strainer having such a configuration is used in a high-pressure washing apparatus will be described.
First, after the strainer 4 is put into a river, a reservoir, a reserve tank or the like and the pump 1 is driven, and the cleaning gun 6 is fired, water is absorbed from the water suction port 16 of the strainer 4 through the water suction hose 3. Water is sprayed from the tip of the cleaning gun 6 from the pump 1 through the high-pressure water discharge hose 5.
In this state, water outside the strainer 4 passes through the filtering member 14 and enters the inside of the strainer 4, but foreign matters such as fine sand are captured and adhered to the outside of the filtering member 4.

Next, if the cleaning gun 6 is stopped, the water injection from the cleaning gun 6 stops, the amount of residual water in the pump 1 increases, and the residual water is introduced into the strainer 4 via the residual water hose 7. It is discharged from the mouth 15 into the hollow portion 20 of the central cylinder 19.
The discharged surplus water flows out of the strainer 4 from the nozzle 22 at the tip of the nozzle 21 through the filtration member 14.

  At the time of injection of the nozzle 21, residual water is also ejected from the ejection holes 23 of the nozzle 21, and the central cylindrical body 19 is rotated by the reaction force of the pressurized residual water jet. In addition, the remaining water ejected from the nozzle 21 arranged with a difference in height is uniformly sprayed over the entire circumference side of the filtration member 14 from a close range over a wide area, and adheres to the outside of the filtration member 14. Foreign matters such as fine sand are efficiently removed from the inside of the strainer 4 to prevent the filtering member 14 from being clogged.

Therefore, Figure 5 is a sectional view of the strainer of the high-pressure cleaning device of the present invention, FIG. 6 is a perspective view of the inner cylinder of the same, FIG. 7 is a perspective view of the outer cylinder of the same, and FIGS. 1 to 4 equivalent The same reference numerals are given to the parts to be performed.

  The strainer 4 is formed with a circular lower groove 9 at a peripheral end portion on a circular bottom plate 8, and the side column 10 stands with screws 12 at a predetermined interval along the lower groove 9 inside the lower groove 9. A circular ceiling plate 11 is fixed to the upper portion of the side column 10 with screws 12.

The ceiling plate 11 is formed low in the vicinity of the peripheral edge, and a circular upper groove 13 having the same diameter and depth as the lower groove 9 is formed on the lower surface of the ceiling plate 11 at a position facing the lower groove 9.
A cylindrical filtering member 14 is fitted between the upper groove 13 and the lower groove 9 at upper and lower ends thereof.
The filtering member 14 has the same material and structure as before.

A water inlet 16 that opens to the inside of the strainer 4 is provided at the center of the upper surface of the ceiling plate 11, and a mounting cylinder portion 30 is formed integrally with the ceiling plate 11 on the back surface of the ceiling plate 11 so as to communicate with the water inlet 16. A step portion 30 a is provided inside the mounting cylinder portion 30.
The upper portion of the inner cylindrical body 32 in which the hollow portion 31 communicates with the water inlet 16 is fitted to the mounting cylindrical portion 30, and the upper end portion of the inner cylindrical body 32 is abutted with the stepped portion 30a.
As before, the suction port of the water suction hose 3 is connected to the water suction port 16 by a connector or the like.

The inner cylinder 32 is formed with a large-diameter base cylinder part 33 that spreads outward at the lower part, and a plurality of openings 34 are formed at the lower end of the peripheral side surface of the base cylinder part 33. The base cylinder part 33 is fitted in a recess 35 provided on the bottom plate 8.
Further, the upper surface of the base cylinder part 33 is horizontal, and a standing wall 33a is formed at the peripheral part.

An outer cylinder 36 is mounted on the base cylinder portion 33 so as to be rotatable in the horizontal direction on the outer side with a space from the inner cylinder 32.
The outer cylinder 36 is formed with an installation part 36a bent outward by 90 ° so that the lower part is stably placed on the base cylinder part 33, and has an inclined part 36b that spreads outward at the upper part. Is formed. A surplus water inlet 15 that opens to the inside of the strainer 4 is provided on the upper surface of the ceiling plate 11 above the opening of the inclined portion 36b. The remaining water inlet 15 has a smaller diameter than the water inlet 16.
In addition, the discharge port of the spillage hose 7 is connected to the spillage introduction port 15 by a connector or the like as before.

A tapered tubular nozzle 21 is provided on the body portion 36c of the outer cylinder body 36 so as to communicate with the hollow portion 37 between the inner cylinder body 32 and the outer cylinder body 36 and extend radially outward from the body portion 36c. .
The arrangement of the nozzles 21 is the same as before. In addition, the nozzle 21 is provided with a rotation ejection hole 23 as before.

Next, the action of the strainer 4 having such a configuration is that water is absorbed from the water absorption opening 34 of the base cylinder portion 33 of the inner cylinder 32 installed on the bottom plate 8 of the strainer 4, and the inner cylinder The air is sucked into the pump 1 through the water absorption hose 3 through the water suction port 16 from the hollow portion 31 of 32.
The remaining water from the pump 1 is discharged from the remaining water introduction port 15 through the remaining water hose 7 into the hollow portion 37 of the outer cylindrical body 36 through the inclined portion 36 b of the outer cylindrical body 36.
The discharged residual water is ejected from the ejection port 22 at the tip of the nozzle 21.

Next, the Example which compared this invention strainer with the existing strainer which does not clean a residual water is shown.
In the strainer of the present invention, the diameter of the nozzle injection port 22 is 5 mm and the diameter of the rotation ejection hole 23 is 3 mm. However, the dimensions are selected according to the size and height of the strainer.
The distance between the filtering member 14 and the injection port 22 of the nozzle 21 was set to 15 mm where the remaining water hits the entire surface. The shape of the injection port is good for the laterally long trumpet type, but good results were obtained even when it was carried out in a perfect circle.

〇上記時間にて目詰まり使用不能。
〇内部負圧により大きく変形。
（２）縦型両面ストレーナ ３０メッシュ

〇上記時間にて両面とも目詰まり使用不能。 Comparison between the existing strainer and the strainer of the present invention (data base water supply turbidity 3000SS PVC chloride water tank 1000L capacity)
1. Existing strainer Engine type high pressure water washer Water supply 22L / min
(1) Horizontal 100 mesh

〇 Clogging cannot be used in the above time.
〇 Large deformation due to internal negative pressure.
(2) Vertical double-side strainer 30 mesh

O Both sides are clogged and cannot be used in the above time.

〇３０分データ計測３０秒余水洗浄する。
〇使用ストレーナ外観に殆ど付着物なし。 2. This invention strainer (1) Horizontal type 100 mesh (Remaining water cleaning 10 minutes 30 minutes after water supply)

○ 30 minutes data measurement Wash the remaining water for 30 seconds.
〇 There is almost no deposit on the appearance of the strainer used.

It is a block diagram showing the whole apparatus using the strainer of a general high-pressure washing apparatus. It is a front view of the strainer of a general high-pressure washing apparatus. It is a vertical front view of FIG. FIG. 3 is a transverse plan view of FIG. 2. It is sectional drawing of the strainer of the high-pressure washing apparatus of this invention . It is a perspective view of the inner cylinder body of the strainer of the high-pressure washing apparatus of this invention . It is a perspective view of the outer cylinder of the strainer of the high-pressure washing apparatus of the present invention .

DESCRIPTION OF SYMBOLS 1 Pump 2 Drive source 3 Water absorption hose 4 Strainer 5 High pressure water discharge hose 6 Washing gun 7 Surplus water hose 14 Filtration member 15 Waste water introduction port 16 Water intake port 19 Central cylinder 20 Hollow part 21 Nozzle 22 Injection port 23 Ejection hole 31 Hollow part 32 Inner cylinder 33 Base cylinder part 34 Water absorption opening 36 Outer cylinder

Claims (3)

The high-pressure water generated by driving the pump with the drive source is connected to the water absorption hose connected to the pump of the high-pressure washing machine that performs washing by spraying from the tip of the washing gun, and the remaining water returning from the pump in strainer with ejecting nozzles for ejecting toward the filtration member Yomizu therein, rotatably provided inside peripheral surface of the filtration member, filtration member peripheral side portion is cleaned by the Yomizu the strainer A spillage inlet and a water inlet opening inside the strainer are arranged in parallel on the upper surface of the water inlet, the water inlet is provided in the center, and the hollow portion of the inner cylinder provided in the strainer communicates with the water inlet, There is a water-absorbing opening on the peripheral side at the lower part of the inner cylinder, and a large-diameter base cylinder that extends outward is provided on the outer cylinder. The body is provided to be rotatable and on the outer peripheral surface of the outer cylinder. A nozzle that communicates with the hollow portion of the cylindrical body and the injection port protrudes, the nozzle rotates due to the reaction force of the remaining water, and the outer cylindrical body is formed with an inclined portion that spreads upward at the upper part, A strainer for a high-pressure washing apparatus , wherein the residual water introduction port is disposed on an opening of the inclined portion . As the nozzle tip portion approaches the filter member, the strainer of the high-pressure cleaning apparatus according to claim 1, characterized in that it is projected from the central portion toward the filter member side. The strainer of the high-pressure washing apparatus according to claim 1 or 2, wherein a plurality of nozzles are provided with different heights.

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