JPS6156440B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to the structure of a submersible pump equipped with a filter that can be easily disassembled and assembled.

``Conventional technology'' Submersible pumps inserted into boring wells, etc.
The outer diameter is formed small so that it can be easily inserted into a well with a small inner diameter, and the outer diameter is formed long in the axial direction to increase capacity such as output.

Also, since foreign matter such as sand may be sucked into a boring well, the water intake port of the pump should be
It is equipped with a filter to remove foreign matter.

Furthermore, when a pump such as the Wesco type that has a small gap formed in its rotating parts is used, a filter is essential, and from the point of view of maintaining the performance of the pump, it is essential to have a filter that can remove even the smallest possible foreign matter. It was necessary.

However, although filters are extremely effective in removing foreign matter, small filters provided at the suction port cannot be used for a long period of time.

In other words, in such a structure, since it is provided at the suction port of the pump part, the effective area as a filter is almost the same as the area of the suction port, and the effective area is extremely small considering the possibility of foreign matter accumulating.
When a small amount of foreign matter was removed and accumulated, water flow resistance was observed and the lifespan was short.

In addition, in order to increase the effective area, attempts have been made to construct a submersible pump with a large cylindrical filter that covers the entire submersible pump, and to raise it from a well to the surface for cleaning. There is.

However, with these configurations, the former case goes against the desire to reduce the outer diameter, and the latter requires a lot of effort to clean.

Furthermore, when these filters are constructed in a large size to increase the effective area of the filter, if foreign matter accumulates on the filter, it will be subjected to large pressure from the water flow, so a structure that is strong against pressure is required.

In order to remove even the smallest foreign particles, if the mesh of the filter is made finer, the accumulation of small particles in a short period of time will create a large resistance to the water flow, causing the filter to be crushed by the suction pressure of the pump. There is.

For this reason, many filters have been designed to limit the mesh size of the filter to remove relatively large foreign objects that might lock the pump.

In addition, in order to construct a filter with a fine mesh, it is necessary to create a mesh using thin wire, so it is difficult to manufacture it durablely, and it is usually constructed with the same filter as the filter with a large mesh. It had been.

On the other hand, filters are generally considered to be either reusable after cleaning or disposable, and when reusing the former, the filter must have a durable structure so that it will not be damaged by cleaning. In the case of the latter disposable type, it is especially desirable to manufacture it at a low cost.

However, in the case of reusing the former, the finer the mesh, the more difficult it is to clean the foreign matter that gets stuck in the mesh, which may result in some damage.

In addition, in the case of the latter disposable type, manufacturing with a fine mesh would be expensive, so it was not preferred, and each had its own advantages and disadvantages.

"Problems to be Solved by the Invention" The present invention has been made in view of these circumstances, and with the aim of prolonging the life of the filter in a submersible pump and being able to manufacture it at low cost, it has been developed to provide a filter that can be easily disassembled and assembled. The objective is to obtain a submersible pump equipped with a filter that can reliably remove even the smallest foreign matter.

"Means for Solving the Problems" The present invention provides a pump that is directly connected to an electric motor and formed integrally with the motor, a suction port is formed at the axial end of the pump, and a pipe that communicates with the suction port is provided. The problem was solved by creating a through hole around the tube, wrapping a net around the tube's outer circumference, fitting a rubber band from the outer circumference of the net, and placing protrusions on the outer circumference of the rubber band. are doing.

``Function'' The suction port formed at the axial end of the pump has a
A cylindrical tube long in the axial direction can be provided, and a through hole is formed in this tube so that the water sucked by the pump flows.

Then, by wrapping a net around the outer circumference of the pipe, a filter can be provided in the waterway leading to the suction port.

Furthermore, the net that makes up the function of this filter has a pipe on the water flow direction side, so even if the net is not rigid, it will not collapse under water pressure, and a fine mesh net without rigidity can be used. It can remove even the smallest foreign matter.

In addition, since the filter is made by wrapping a mesh around a tube that is long in the axial direction and formed into a cylindrical shape, the filter can be made almost unlimitedly long in the axial direction.
The necessary filter area can be obtained and the necessary life extension can be obtained.

Moreover, since the assembly is tightened from the outside with a rubber band, it is easy to assemble and can be easily disassembled for cleaning, without fear of damage even if the filter is made of a non-rigid mesh.
You can also remove the screen from the pipe for cleaning.

Furthermore, since the protrusions are formed on the outside of the rubber band, direct contact of the filter net with the well can be avoided, and damage to the net during use can be prevented.

"Example" The present invention is based on an example shown in the drawings,
To explain, FIG. 1 is a perspective view showing the structure of the filter, FIG. 2 is a cross-sectional view of the filter, and FIG. 3 is a vertical cross-section of the filter. Each shows an embodiment of the present invention.

In FIG. 1, a filter 1 is formed by rolling a mesh 2 into a cylindrical shape, and has telescopic mounting rings 3 and 4 made of a material such as rubber at the upper and lower ends of the outer periphery, respectively, and the middle Two elastic bands 5 and 6, which are also elastic, are fitted in the holder.

A large number of protrusions 7 are disposed on the outer periphery of each of the rubber bands 5 and 6, and the circumference formed by the tips of the protrusions 7 and the outer circumference of the attachment rings 3 and 4 coincide with each other.

Further, the net 2 is rolled up and provided with mounting rings 3 and 4 on the upper and lower sides from the outside, respectively, and the mounting rings 3 and 4 are attached to the net 2 by their respective telescopic functions.
It is attached with a slight tightening action to prevent it from unraveling.

A joint portion 8 is formed in the rolled and overlapping portion of the net 2.

In FIG. 2, a cage-shaped pipe 9 is provided inside the net 2, and a suction port 1 of a pump 10 is provided inside the pipe 9.
1 is formed.

A water pump 12 of the pump 10 is erected in the center, a case 14 having an opening 13 is provided on the outer periphery, and a water channel 15 is formed between the case 14 and the protrusion 7. .

Furthermore, the case 14 is configured to be supported by the outer diameter sides of the mounting rings 3 and 4 and the protrusions 7 of the rubber bands 5 and 6.

In FIG. 3, an electric motor 16 is directly connected to the lower part of the pump 10, and a holding plate 17 holds down the upper end of the filter 1 with the pump 12 as an axis.
It is fixed by a fixing ring 18.

The holding plate 17 and the fixing ring 18 are
In each case, the filter 1 is fixed to the suction port 11 of the pump 10 so as not to float, and the same effect can be obtained by other methods as long as the filter 1 can be prevented from floating.

Further, according to this embodiment, the fixing ring 18 is
This is also made of a stretchable material such as rubber, and may be used to tighten the outer periphery of the lift pipe 12 with its elasticity to prevent movement in the axial direction. It may be configured such that the holding plate 17 can be moved along the gap formed by the movement.

In this embodiment, the net 2 is held down to the tube 9 by the attachment rings 3, 4 and the rubber bands 5, 6, but if the net 2 is held down to the tube 9, the same effect can be obtained by other methods. It is something that can be done.

The mounting rings 3 and 4 are attached to the case 14, respectively.
If the case 14 is not needed, it is unnecessary and the same function and effect can be obtained by using the same rubber bands 5 and 6.

In the submersible pump, when the electric motor 16 is operated, the suction port 11 of the pump 10 sucks in surrounding water, so the water flow flows into the water channel 15 through the opening 13 of the case 14, and further flows through the filter 1.
through the net 2 to the suction port 11.

Therefore, if foreign substances such as sand are mixed in the water, they will be blocked by the net 2 and the suction port 11 of the pump 10 will be blocked.
Water without foreign substances will be sucked into the tank.

The net 2 that constitutes this filter 1 is
It is formed by wrapping a thin mesh 2 around a basket-shaped tube 9,
Furthermore, since the outer periphery is held down by the rubber bands 5 and 6 so that the wrapped state is maintained, for example, a non-rigid material such as cloth can be used as the net 2. You can get long-term effects.

In addition, since the mesh 2 is wrapped around the tube 9 and then assembled by fitting the rubber bands 5 and 6, disassembly and assembly can be performed repeatedly, and this work is extremely easy and manufacturing is easy. The net 2 will not be damaged even when cleaning it.

To attach the filter 1 to the pump 10, it is sufficient to press the filter 1 against the suction port 11 using a holding plate 17, as shown in FIG.

Although the outer periphery does not necessarily require the case 14, if the filter 1 is covered with a thin stainless steel plate or plastic material, the filter 1 will be protected, and even if objects hit it during installation or use, the filter 1 will be protected. A very fine and soft filter 1 that can prevent damage to the filter 1.
It is effective in preventing damage when using

If such a case 14 is formed of a thin material, the supported upper and lower ends will not deform, but if the middle is pressed from the outside, it will easily deform.

However, in such a case, the rubber band 5,
The protrusion 7 disposed on the outer periphery of the case 6 serves as a support to prevent deformation of the case 14 and to ensure a sufficient space between the case 14 and the net 2.

Furthermore, the protrusions 7 of the rubber bands 5 and 6 can prevent the net 2 from coming into direct contact with the inner surface of the well when the case 14 is not provided. 15 can be secured.

Therefore, the performance of the filter 1 can be maintained without foreign matter becoming a resistance to water flow due to the water channel secured around the outer periphery of the net 2.

Also, to disassemble a submersible pump like this,
By removing the fixing ring 18 and the presser plate 17, the case 14 and the filter 1 can be easily removed, so the rubber bands 5, 6, etc. of the filter 1 can be easily removed.
The mesh 2 can be unwound from the tube 9.

That is, when the attachment rings 3 and 4 come off, the rubber bands 5 and 6 also come off, so that the rolled net 2 can be easily disassembled and removed.

Also, for assembly, move the rubber bands 4, 5 and attachment rings 3, 4 to either side, wrap the cleaned net 2 or new net 2 around the pipe 9, and then move the attachment rings 3, 4 and the rubber bands. 5,6
can be moved to the specified position and restored to complete the assembly.

Therefore, if the filter 1 is used for a long time or if the filter 1 becomes clogged with a lot of foreign matter, it can be easily disassembled, cleaned, and reassembled.

In addition, when cleaning and replacing the filter 1 or inserting it into a well, the protrusions 7 attached to the outer periphery of the rubber bands 5 and 6 can be prevented from coming into contact with the inner wall of the well or other objects. Breakage can be prevented even if the mesh 2 does not have the rigidity of the fine mesh 2.

For example, even if someone is pulled up from a well and laid down on the ground, the projections 7 will contact the ground and the net 2
A certain distance can be maintained between the net 2 and the ground, preventing the net 2 from coming into direct contact with the ground, and the net 2 can be used with peace of mind even when a fine-mesh net 2 with low rigidity is adopted.

"Effects of the Invention" As described above, according to the present invention, it is possible to effectively construct a filter with a fine mesh, to construct a strong and high-performance filter, and to be able to reliably remove even minute foreign matter. It is extremely effective in removing large amounts of foreign matter, is easy to disassemble and assemble, and can be manufactured at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the structure of the filter, FIG. 2 is a cross-sectional view of the filter, and FIG. 3 is a vertical cross-section of the filter. . 2... Net, 4, 5... Rubber band, 7... Protrusion, 9... Tube.

Claims (1)

[Claims] 1. A pump is directly connected to an electric motor and formed into a slender and integral part, and a suction port is formed at the axial end of this pump,
A pipe communicating with this suction port is provided, a through hole is provided around this pipe, a net is rolled up and wound around the outer periphery of this pipe, a rubber band is fitted from the outer periphery of the net, and a protrusion is arranged on the outer periphery of this rubber band. A submersible pump characterized by: