JP7488072B2 - Rotating water sprinkler system - Google Patents

Description

The present invention relates to a rotary sprinkler system suitable for use in, for example, the sprinkling of water to be treated in a trickling filter method.

One method for treating sewage and other water is known in which the water is purified by spraying it from above onto a filter layer housed in a water tank.

As such a sewage treatment system, the following Patent Document 1 describes a sewage treatment system that includes a solid-liquid separation device having a first filter media packed bed filled with a specified filter media, passing sewage to be treated through the first filter media packed bed with an upward flow to separate the sewage into solid components and filtrate water, and passing the filtrate water through the first filter media packed bed with a downward flow at a specified timing to backwash the first filter media packed bed, and a trickling filter bed that is installed downstream of the solid-liquid separation device and has a second filter media packed bed filled with filter media to which microorganisms are attached, spraying the filtrate water on top of the second filter media packed bed, causing the filtrate water to flow down into the second filter media packed bed, and discharging treated water obtained by biologically treating the filtrate water with the microorganisms.

Figure 3 of the same document describes a rotary sprinkler system for sprinkling water to be treated toward a filter bed. This rotary sprinkler system has a rotation mechanism at the end of a pipe through which the water to be treated is supplied, and multiple sprinkler nozzles are provided radially from the rotation mechanism toward the circumference of the filter bed. The sprinkler nozzles are connected to the pipe, and the sprinkler nozzles are rotated in the circumferential direction via the rotation mechanism to sprinkle water.

WO First Piping 2012/161339

However, in the conventional rotary sprinkler system described above, a rotating mechanism is provided in the pipe through which the water to be treated is supplied, and multiple sprinkler nozzles are provided radially from this rotating mechanism toward the circumference of the filter bed, and the water to be treated is supplied from the pipe to the sprinkler nozzles via the rotating mechanism. This means that the rotating mechanism comes into contact with the water to be treated, and there is a possibility that floating objects contained in the water to be treated may get into the sliding parts of the rotating mechanism, causing malfunctions.

The object of the present invention is therefore to provide a rotary sprinkler system whose rotational operation is not hindered by suspended matter contained in the water being treated.

In order to achieve the above object, the present invention provides
A water sprinkler device for sprinkling water,
A first pipe is disposed so that its axial direction is along the vertical direction and has a water inlet into the first pipe;
A rotation support portion that supports the first pipe rotatably around an axis;
A water receiving portion attached to the first pipe and receiving water to be caused to flow into the water inlet;
a second pipe that is connected to the first pipe from below the water receiving portion so as to communicate with the inside of the first pipe, extends in a lateral direction, and rotates integrally with the first pipe;
Water ejection portions are provided at predetermined intervals in the length direction of the second pipe, at least one of which opens sideways;
a water supply pipe for supplying water to the water receiving portion,
The present invention provides a rotary sprinkler device, characterized in that the first pipe and the second pipe are configured to rotate together due to the force of water sprayed from the water spray portion.

According to the rotary sprinkler device of the present invention, water is supplied from the water supply pipe to the water receiving section, and the water stored in the water receiving section flows into the inside of the first pipe through the water inlet, passes through the inside of the second pipe and is sprayed from the water spray section, and the force of the water spray causes the first pipe and the second pipe to rotate together. As a result, water can be sprayed uniformly over a wide area along the rotation path of the second pipe. This makes it possible to provide a rotary sprinkler device that is suitable for use in, for example, spraying water to be treated in the trickling filter method. In addition, because the rotating support section is structured not to come into contact with the water, there is no inconvenience of floating objects contained in the water to be treated getting caught in the rotating support section.

In the rotary sprinkler system of the present invention, it is preferable that the rotary support is provided on the top plate of the water tank that receives the sprinkling, the first pipe is supported by the rotary support and extends through the top plate into the water tank, and the water receiving part is attached so as to surround the outer periphery of the part of the first pipe below the top plate.

According to the above aspect, the rotation support part is located on the top plate, which makes maintenance easier. In addition, the rotation of the first pipe can be confirmed on the top plate, which makes it easy to check the operating status. Furthermore, when applied to the spraying of treated water in a trickling filter method, for example, the water receiving part is located below the top plate, which can prevent bad odors and other issues caused by the treated water from being dispersed into the surrounding area.

In addition, in the rotary sprinkler system of the present invention, it is preferable that the water receiving portion is made of a cylindrical case with a bottom that surrounds the outer periphery of the first pipe.

According to the above aspect, since the case is a cylindrical case with a bottom, even if it rotates together with the first pipe, the stored water is less likely to shake and can be stably held. In addition, an opening of uniform width can be formed on the outer periphery of the first pipe, making it easier to supply water from the water supply pipe.

Furthermore, in the rotary sprinkler system of the present invention, it is preferable that the capacity of the water receiving section and the position of the water inlet are set so that the water inlet is submerged in water and water does not overflow from the water receiving section even if the amount of water supplied from the water supply pipe fluctuates.

According to the above aspect, even if the amount of water supplied from the water supply pipe fluctuates, water can always be supplied into the first pipe through the water inlet.

Furthermore, in the rotary sprinkler system of the present invention, it is preferable that a cover member that surrounds and covers the outer periphery of the upper end of the first pipe is removably attached.

According to the above aspect, the outer periphery of the upper end of the first pipe is surrounded and covered by the cover member, making it difficult for odors from the water flowing through the first pipe to escape to the outside. In addition, by removing the cover member, the rotation status of the first pipe can be visually confirmed.

Furthermore, in the rotary sprinkler system of the present invention, it is preferable that a hanging rod is provided, one end of which is connected to the outer periphery of the water receiving portion and the other end of which is connected to the tip of the second pipe.

According to the above embodiment, the second pipe can be supported by the hanging rod so that it does not bend.

Furthermore, in the rotary sprinkler system of the present invention, it is preferable that the front rotation support portion has at least a pair of bearings spaced apart in the axial direction, and the flange portion provided on the first pipe is supported on the bearings located at the top.

According to the above aspect, the flange portion provided on the first pipe is supported by the bearing, thereby restricting the axial movement of the first pipe and supporting the first pipe rotatably.

Furthermore, in the rotary sprinkler system of the present invention, it is preferable that the water supply pipe penetrates the wall of the water tank while maintaining an airtight state, and extends so that its tip is positioned above the opening of the water receiving portion within the water tank.

According to the above embodiment, the space below the top plate can be sealed as much as possible, so when applied to, for example, the spraying of treated water in a trickling filter method, it is possible to prevent odors and other issues caused by the treated water from being dispersed into the surrounding area.

According to the present invention, the first pipe is rotatably supported by the rotation support part, and the first pipe and the second pipe are configured to rotate together due to the force of the water sprayed from the water spray part, so that the rotation support part does not come into contact with the water to be treated, and it is possible to prevent the inconvenience of floating objects contained in the water to be treated from getting caught in the rotation support part.

1 is a cross-sectional view showing one embodiment of a trickling filter type water treatment device to which a rotary sprinkler device of the present invention is applied. FIG. 2 is an enlarged cross-sectional view showing the rotary sprinkler device of the embodiment. FIG. 4 is an enlarged cross-sectional view showing a rotation support part of the rotary sprinkler device.

Below, one embodiment of the rotary sprinkler system according to the present invention will be described with reference to the drawings.

Figure 1 shows one embodiment of a trickling filter type water treatment device to which the rotary sprinkler system of the present invention is applied.

This trickling filter type water treatment device 100 is placed in one step of a wastewater treatment process for sewage, etc., and is used to purify the wastewater by passing the treated water, which is wastewater such as sewage, through a filter layer carrying microorganisms to decompose organic matter using the microorganisms.

For this reason, the trickling filter bed type water treatment device 100 is provided with a water tank 101 for treating the water to be treated. The water tank 101 has a side wall 102, a bottom wall 103, and a top wall 104. A mesh partition 105 is provided at a height position within the side wall 102 close to the bottom wall 103, and a filter media packed layer 106 in which filter media carrying microorganisms is accumulated is supported on this mesh partition 105. Below the mesh partition 105, a treated water storage section 107 is formed, and treated water 108 that flows down through the filter media packed layer 106 is stored. This treated water 108 is transported by gravity through a pipe 116 to the next process in the wastewater treatment process.

A water-to-be-treated storage tank 115 is provided at a predetermined location on the upper outer periphery of the side wall 102, where the water-to-be-treated 112 is temporarily stored. A water-to-be-treated supply pipe 111, one end of which is connected to the inside of the water-to-be-treated storage tank 115, penetrates the side wall 102 while maintaining an airtight state, and is introduced into the side wall 102. The water-to-be-treated supply pipe 111 has a valve 113 and a flow meter 114 in the middle. The other end of the water-to-be-treated supply pipe 111 is bent downward in an L-shape, and is positioned so that its tip opening faces above the opening of the water receiving section 210 described below.

Next, we will explain the rotary sprinkler system 200, which is one embodiment of the present invention that is applied to this trickling filter bed water treatment device 100.

As shown in FIG. 2, the rotary sprinkler system 200 includes a first pipe 201 that passes through the top wall 104 and is arranged so that its axial direction is aligned in the vertical direction. The top end of the first pipe 201 is rotatably supported by a rotation support part 202 that is installed on the top wall 104.

As shown in FIG. 3, the rotation support part 202 has a bearing housing 203, an upper bearing 204 arranged on the upper inner circumference of the bearing housing 203, and a lower bearing 205 arranged on the lower inner circumference of the bearing housing 203. The first pipe 201 is inserted through the upper bearing 204 and the lower bearing 205, and a flange 209 formed on the upper end of the first pipe 201 engages with the upper bearing 204, so that the first pipe 201 is rotatably supported by the rotation support part 202.

A cover member 206 is removably attached to the upper surface of the rotation support portion 202. The cover member 206 prevents foreign matter from entering the rotation support portion such as the upper bearing 204, and also prevents odors from the treated water from escaping to the outside. The rotation operation of the first pipe 201 can be checked by removing the cover member 206.

1 and 2 again, as described above, the first pipe 201 is inserted into the water tank 101 through the top wall 104. The second pipe 207 extending laterally, in this embodiment, horizontally, is connected to the lower end of the first pipe 201. In this embodiment, two second pipes 207 are connected to the lower end of the first pipe 201 so as to extend in opposite directions, but three or more second pipes 207 may be connected to extend radially at equal angular intervals. In this case, it is preferable to arrange the multiple second pipes 207 so that the weight balance is achieved. In addition, when two second pipes 207 are connected to the lower end of the first pipe 201 so as to extend in opposite directions, the middle part of one pipe may be connected to the lower end of the first pipe 201. In this embodiment, the second pipe 207 is connected to the lower end of the first pipe 201 so as to extend horizontally, but it is not limited to horizontally, and may extend diagonally downward or diagonally upward, as long as it extends laterally relative to the first pipe 201.

Each second pipe 207 is provided with water jetting parts 208 at a predetermined interval in the length direction. The water jetting parts 208 may be holes provided in the second pipe 207, or may be cylindrical nozzles or the like attached by penetrating the peripheral wall of the second pipe 207. At least one of the water jetting parts 208 formed in each second pipe 207 opens sideways, in other words, opens in the direction opposite to the rotation direction so that water can be sprayed in a direction that can impart a rotational force to the first pipe 201 and the second pipe 207. In this embodiment, the three water jetting parts 208 arranged on the tip side of each second pipe 207 open in the horizontal direction, the water jetting parts 208 arranged on the inside open diagonally downward, and the water jetting part 208 arranged on the innermost side (the side closest to the first pipe 201) opens downward. The rotational force that rotates the first pipe 201 and the second pipe 207 together is applied mainly by three water jets 208 that open horizontally and are arranged at the tip end of each second pipe 207. By providing water jets 208 that open not only horizontally but also diagonally downward or downward, water can be sprayed more uniformly on the upper surface of the filter media packed layer 106. It is also preferable to provide the water jets 208 that open horizontally at the tip end of the second pipe, which makes it easier to apply the rotational force.

A water receiving section 210 consisting of a cylindrical case with a bottom that surrounds the outer periphery of the first pipe 201 is attached to the middle of the first pipe 201. In this embodiment, the water receiving section 210 has a tapered peripheral wall that widens upward, and a ring-shaped opening of uniform width is formed on the outer periphery of the first pipe 201. The L-shaped end opening of the water supply pipe 111 to be treated is arranged to face the ring-shaped opening of the water receiving section 210, so that the water to be treated 112 supplied from the water supply pipe 111 to be treated can continue to flow into the water receiving section 210 even if the water receiving section 210 rotates. In addition, because the water receiving section 210 is cylindrical with a bottom, the water to be treated 112 stored in the water receiving section 210 does not sway and spill even if the water receiving section 210 rotates together with the first pipe 201.

A water inlet 211 is formed on the peripheral wall of the first pipe 201 arranged inside the water receiving section 210, preferably on the peripheral wall close to the bottom of the water receiving section 210. The water to be treated 112 supplied from the water to be treated supply pipe 111 flows into the water receiving section 210 and into the first pipe 201 from the water inlet 211. The capacity of the water receiving section 210 and the position of the water inlet 211 are set so that the water inlet 211 is immersed and does not overflow from the water receiving section 210 even if the supply amount of the water to be treated 112 from the water to be treated supply pipe 111 fluctuates within a predetermined range. The supply amount of the water to be treated 112 can be maintained within a predetermined range by controlling the second pump 114. This makes it possible to always supply the water to be treated 112 into the first pipe 201 through the water inlet 211 even if the supply amount of the water to be treated 112 from the water to be treated supply pipe 111 fluctuates within a predetermined range.

A hanging rod 212 is stretched between the outer periphery of the peripheral wall of the water receiving portion 210 and the tip of each second pipe 207. That is, one end of the hanging rod 212 is connected to the peripheral wall of the water receiving portion 210, and the other end of the hanging rod 212 is connected near the tip of the corresponding second pipe 207, forming a structure in which the second pipe 207 is suspended and supported relative to the first pipe 201. This hanging rod 212 can support the second pipe 207 so that it does not bend relative to the first pipe 201.

Next, we will explain the operation of the trickling filter bed water treatment device 100 and the rotary trickling device 200.

Wastewater such as sewage is treated through a primary sedimentation tank, a reaction tank, a final sedimentation tank, etc., and during this process, microbial decomposition may be performed using a trickling filter bed type water treatment device 100. The treated water 112 consisting of such wastewater flows into the treated water storage tank 115 and is temporarily stored there, and then flows into the water receiving section 210 through the treated water supply pipe 111.

The water to be treated 112 that has flowed into the water receiving section 210 flows into the first pipe 201 through the water inlet 211, and flows down the first pipe 201 into each second pipe 207. The water to be treated 112 is then sprayed from the water spraying section 208 provided in each second pipe 207 and sprayed onto the upper surface of the filter media packed layer 106. At this time, since at least one of the water spraying sections 208 formed in each second pipe 207 opens sideways, a rotational force acts on the first pipe 201 and the second pipe 207 due to the spraying force of the water to be treated 112 from the water spraying section 208, and the first pipe 201 supported by the rotation support section 202 rotates together with the second pipe 207. As a result, the water to be treated 112 sprayed from the water spraying portion 208 of the rotating second pipe 207 is sprayed widely and evenly onto the upper surface of the filter media packed layer 106, and passes through the inside of the filter media packed layer 106 while being dispersed over a wide area. This promotes the decomposition of organic matter by the microorganisms supported on the filter media packed layer 106, and the water to be treated 112 can be efficiently purified.

In this way, the treated water 108 that has passed through the filter media packed layer 106 and has been purified by microbial decomposition is sent to the next process by gravity flow through the pipe 116 as needed.

According to this rotary sprinkler device 200, the rotary support part 202 of the first pipe 201 is provided at a position away from the passage of the water to be treated 112, and the rotary support part 202 does not come into contact with the water to be treated 112. Therefore, floating objects contained in the water to be treated 112 do not get into the sliding parts such as the upper bearing 204 and the lower bearing 205, and there is no risk of interfering with the operation of the rotary support part 202.

In addition, because the rotation support part 202 is installed on the top wall 104, maintenance of the rotation support part 202 can be performed without entering the water tank 101, making maintenance work easier. In addition, the rotation of the first pipe 201 can be checked by removing the cover member 206, making operation check work easier.

Furthermore, by placing the water receiving section 210 inside the water tank 101, the water to be treated 112 can be supplied inside the water tank 101, thereby preventing bad odors and other issues originating from the water to be treated 112 from scattering into the surrounding area.

100 Trickling filter bed type water treatment device 101 Water tank 102 Side wall 103 Bottom wall 104 Top wall 105 Mesh partition 106 Filter media packed layer 107 Treated water storage section 108 Treated water 111 Treated water supply pipe 112 Treated water 113 Valve 114 Flow meter 115 Treated water storage tank 116 Pipe 200 Rotary sprinkler device 201 First pipe 202 Rotation support section 203 Bearing housing 204 Upper bearing 205 Lower bearing 206 Cover member 207 Second pipe 208 Water ejection section 209 Flange 210 Water receiving section 211 Water inlet 212 Suspension rod

Claims (7)

A water sprinkler device for sprinkling water,
A first pipe is disposed so that its axial direction is along the vertical direction and has a water inlet into the first pipe;
A rotation support portion that supports the first pipe rotatably around an axis;
A water receiving portion attached to the first pipe and receiving water to be caused to flow into the water inlet;
a second pipe that is connected to the first pipe from below the water receiving portion so as to communicate with the inside of the first pipe, extends in a lateral direction, and rotates integrally with the first pipe;
Water ejection portions are provided at predetermined intervals in the length direction of the second pipe, at least one of which opens sideways;
a water supply pipe for supplying water to the water receiving portion,
The first pipe and the second pipe are configured to rotate together by the force of the water jetted from the water jetting portion ,
A rotary sprinkler device characterized in that the rotating support part is provided on the top plate of a water tank that receives water spray, the first piping is supported by the rotating support part and extends through the top plate into the water tank, and the water receiving part is attached so as to surround the outer periphery of the portion of the first piping below the top plate . A water sprinkler device for sprinkling water,
A first pipe is disposed so that its axial direction is along the vertical direction and has a water inlet into the first pipe;
A rotation support portion that supports the first pipe so as to be rotatable around an axis;
A water receiving portion attached to the first pipe and receiving water to be caused to flow into the water inlet;
a second pipe that is connected to the first pipe from below the water receiving portion so as to communicate with the inside of the first pipe, extends in a lateral direction, and rotates integrally with the first pipe;
Water ejection portions are provided at predetermined intervals in the length direction of the second pipe, at least one of which opens sideways;
a water supply pipe for supplying water to the water receiving portion,
The first pipe and the second pipe are configured to rotate together by the force of the water jetted from the water jetting portion,
A rotary sprinkler system characterized in that a cover member is removably attached to surround and cover the outer periphery of the upper end of the first pipe. A water sprinkler device for sprinkling water,
A first pipe is disposed so that its axial direction is along the vertical direction and has a water inlet into the first pipe;
A rotation support portion that supports the first pipe rotatably around an axis;
A water receiving portion attached to the first pipe and receiving water to be caused to flow into the water inlet;
a second pipe that is connected to the first pipe from below the water receiving portion so as to communicate with the inside of the first pipe, extends in a lateral direction, and rotates integrally with the first pipe;
Water ejection portions are provided at predetermined intervals in the length direction of the second pipe, at least one of which opens sideways;
a water supply pipe for supplying water to the water receiving portion,
The first pipe and the second pipe are configured to rotate together by the force of the water jetted from the water jetting portion,
A rotary sprinkler device characterized in that the rotation support portion has at least a pair of bearings arranged axially apart, and a flange portion provided on the first piping is supported on the bearing located at the top. 2. The rotary sprinkler system according to claim 1 , wherein the water receiving portion is made of a cylindrical case with a bottom that surrounds an outer periphery of the first pipe. The rotary sprinkler device according to any one of claims 1 to 4, wherein the capacity of the water receiving section and the position of the water inlet are set so that the water inlet is submerged in water and water does not overflow from the water receiving section even if the amount of water supplied from the water supply pipe fluctuates. 5. The rotary sprinkler system according to claim 1 , further comprising a suspension rod having one end connected to an outer periphery of said water receiving portion and the other end connected to the tip of said second pipe. 5. The rotary sprinkler system according to claim 1, wherein the water supply pipe penetrates the wall of the water tank in an airtight manner and extends within the water tank so that its tip is positioned above the opening of the water receiving portion.