Suction nozzle

Abstract

To provide a suction nozzle that is easy to handle and has a simple structure. 【Solution means】 The suction nozzle 10 for cleaning the floor surface 1 has a body 11, a first suction port 25, and a gas discharge port 23. The body 11 has a suction surface 21. The first suction port 25 and the gas discharge port 23 are arranged on the suction surface 21. The body 11 may have a lower end 19 extending along the floor surface 1. The suction surface 21 may rise from the lower end 19. The first suction port 25 may extend along the lower end 19. The gas discharge port 23 may be arranged between the lower end 19 and the first suction port 25. A second suction port 35 may be arranged above the first suction port 25.

Description

Technical Field

[0001] The present invention relates to a suction nozzle.

Background Art

[0002] There is known a sediment removal device used when removing sludge deposited at the bottom of a liquid (Japanese Utility Model Publication No. 47-36073. Hereinafter, Patent Document 1). This device has a scoop, a high-pressure water injection nozzle, and a slurry promotion chamber. The sludge layer dug up by the scoop is collapsed by the injection from the high-pressure water injection nozzle. The collapsed sludge flows into the slurry promotion chamber and is pulverized by a high-pressure swirling flow to be completely slurried.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The sediment removal device of Patent Document 1 requires a high-pressure water generator and a high-pressure water hose. Also, the structure is complex. The present invention provides a suction nozzle that is easy to handle and has a simple structure.

Means for Solving the Problems

[0004] The first aspect of the present invention is a body having a suction surface rising from the floor surface during use, a first suction port disposed on the suction surface, a gas discharge port disposed on the suction surface, and a suction nozzle having the above.

[0005] During use of the suction nozzle, the body may have a lower end extending along the floor surface. The suction surface may rise from the lower end. The first suction port may extend along the lower end. The gas discharge port may be disposed between the lower end and the first suction port.

Effects of the Invention

[0006] According to the present invention, it is possible to provide a suction nozzle that is easy to handle and has a simple structure.

Brief Description of the Drawings

[0007]

Figure 1

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Figure 8

Mode for Carrying Out the Invention

[0008] <Embodiment 1> As shown in Figs. 1 to 5, the suction nozzle 10 of the present embodiment includes a body 11, a plurality (eight in Fig. 1) of gas discharge ports 23, a first suction port 25, a discharge port 47, and a gas inlet 53. The suction nozzle 10 cleans the floor surface 1 which is a flat surface.

[0009]

[0010] ​In use, the bottom surface 13 extends along the floor surface 1. The bottom surface 13 is located at the bottom of the body 11. In use, the suction surface 21 rises from the bottom surface 13. The lower end 19 is the boundary between the bottom surface 13 and the suction surface 21. The lower end 19 is a straight line. In use, the entire edge of the lower end 19 can contact the floor surface 1. The cavity 27 is the hollow part of the body 11. When the floor surface 1 is a curved surface, preferably, the lower end 19 is a curve having the same curvature as the floor surface 1.

[0011] The first suction port 25 is arranged on the suction surface 21. The first suction port 25 extends along the floor surface 1. The first suction port 25 extends continuously without interruption over substantially the entire width of the suction surface 21. The first suction port 25 is connected to the cavity 27. The gas discharge port 23 is an opening and is arranged on the suction surface 21. The gas discharge port 23 discharges gas. In order to approach the floor surface 1, the gas discharge port 23 is arranged below the first suction port 25 in use. The gas discharge ports 23 are evenly arranged along the floor surface 1.

[0012] The second suction port 35 is arranged on the body 11. The second suction port 35 is connected to the cavity 27. In use, the second suction port 35 is located above the first suction port 25. For example, the second suction port 35 is arranged behind the first suction port 25. The second suction port 35 may be narrower in width than the first suction port 25.

[0013] The outlet 47 is arranged at the rear end 41. The outlet 47 is connected to the cavity 27. The outlet 47 has a female thread (for example, a tapered pipe thread for a pipe). The suction pipe 63 is connected to the outlet 47. The outlet 47 is connected to the suction pump 61 via the suction pipe 63. Note that the outlet 47 does not have to have a female thread. In this case, preferably, the outlet 47 has a tapered hole. The suction pipe 63 may be inserted into the outlet 47. The suction pipe 63 may be fitted into the outlet 47 and fixed.

[0014] The gas pipe 51 is arranged at the rear end of the lower surface 13. The gas pipe 51 has a gas inlet 53. The gas inlet 53 is connected to the gas outlet 23 via a gas flow path 55. The gas inlet 53 has a female thread (for example, a tapered thread for a pipe). A gas hose 73 is connected to the gas inlet 53. The gas inlet 53 is connected to a gas supply source 71 via the gas hose 73. Note that the gas inlet 53 does not necessarily have to have a female thread. In this case, preferably, the gas inlet 53 has a tapered hole. The gas hose 73 may be inserted into the gas inlet 53. The gas hose 73 may be attached to the gas inlet 53 by fitting.

[0015] The gas flow path 55 is arranged below the cavity 27. The gas flow path 55 extends radially from the gas inlet 53. Gas is supplied to the gas inlet 53 and discharged from the gas outlet 23 via the gas flow path 55. The gas is, for example, compressed air or an inert gas.

[0016] Describe the usage method of the suction nozzle 10. Immerse the body 11 in the liquid 2 and bring the lower surface 13 into contact with the floor surface 1. Then, supply gas from the gas supply source 71 to the suction nozzle 10 via the gas hose 73. The gas is discharged from the gas outlet 23 near the floor surface 1. The particles 3 deposited on the floor surface 1 are fluidized and suspended by the gas discharged from near the floor surface 1. Then, operate the suction pump 61. The suspended particles 3 and the liquid 2 are sucked from the first suction port 25 and the second suction port 35 and recovered to the suction pump 61 via the cavity 27. Since the second suction port 35 is farther from the floor surface 1 than the first suction port 25, the inflow of the particles 3 is suppressed. By sucking the liquid 2 from the second suction port 35, in the cavity 27, the apparent concentration of the particles 3 with respect to the liquid 2 decreases. As a result, the fluidity of the particles 3 in the suction pipe 63 is improved. And the load on the suction pump 61 is reduced. Also, the dischargeability of the particles 3 is improved.

[0017] <Embodiment 2> As shown in FIG. 6, the suction nozzle 110 of this embodiment includes a body 111, a plurality (three in FIG. 6) of first suction ports 125, a plurality (two in FIG. 6) of second suction ports 135, an outlet 147, a gas inlet 153, and a blade 130.

[0018] The body 111 is hollow. The body 111 is bent approximately at a right angle in the middle. The body 111 has a suction surface 121, a rear end (upper end surface) 141, a lower surface 113, an upright upper surface 137, a first suction port 125, and a second suction port 135. The suction surface 121 is the front surface of the body 111. The suction surface 121 has a first suction port 125 and a gas discharge port 123. The first suction port 125 extends along the lower end 119 and is arranged almost across the entire width of the suction surface 121. The gas discharge port 123 is arranged between the lower end 119 and the first suction port 125. The upright upper surface 137 is the front surface of the portion where the body 111 rises upward.

[0019] The blade 130 is arranged in contact with the lower side of the lower surface 113. The blade 130 may protrude from the lower end 119 to the front of the suction surface 121. The blade 130 may be detachably connected to the body 111.

[0020] The second suction port 135 is arranged above the first suction port 125. The second suction port 135 is arranged behind the first suction port 125. The second suction port 135 may be arranged on the upright upper surface 137 of the body 111.

[0021] The rear end 141 is the upper surface of the body 111. The outlet 147 is arranged at the center of the rear end 141. A suction pipe 163 is connected to the outlet 147.

[0022] <Embodiment 3> As shown in FIG. 7, the suction nozzle 210 of this embodiment includes a body 211, a plurality (seven in FIG. 7) of gas discharge ports 223, a first suction port 225, an outlet 247, and a gas inlet 253. The body 211 has a lower end 219, a suction surface 221, a rear end 241, and a cavity 227. The suction surface 221 is in a horseshoe shape with the lower end 219 as a straight line and the opposite side of the lower end 219 as a semi-circle. The suction surface 221 is an inclined surface with the lower end 219 side protruding forward. During use, the entire edge of the lower end 219 can contact the floor surface 1. The cavity 227 is a hollow part of the body 211. The body 211 has an outlet 247 and a gas inlet 253 at the rear end 241. The gas inlet 253 is connected to a gas supply source 271 via a gas hose 273. A suction pipe 263 is arranged at the outlet 247. The suction pipe 263 is connected to a suction pump 261.

[0023] The first suction port 225 is arranged on the suction surface 221. The first suction port 225 is in a shape along the outer edge of the suction surface 221. The first suction port 225 is connected to the cavity 227. The gas discharge port 223 is arranged on the suction surface 221. The gas discharge port 223 is arranged below the first suction port 225 during use. The gas discharge ports 223 are evenly arranged along the floor surface 1.

[0024] When the suction nozzle 210 is in use, the body 211 is immersed in the liquid 2 and the lower end 219 is brought into contact with the floor surface 1. When gas is discharged from the gas discharge port 223 arranged near the floor surface 1, the particles 3 deposited on the floor surface 1 are fluidized and suspended. At the same time, the liquid 2 with a low concentration of particles 3 flows in from above the first suction port 225. As a result, in the first cavity 227, the apparent concentration of the particles 3 with respect to the liquid 2 decreases. And the fluidity of the particles 3 in the first cavity 227 and inside the suction pipe 263 is improved. Since the suction surface 221 is inclined, the operator can tilt the suction nozzle 210 to bring the lower end 219 into contact with the floor surface 1, so it is easy to suck the particles 3 in the narrow part.

[0025] <Embodiment 4> As shown in FIG. 8, the suction nozzle 310 of the present embodiment has a body 311, a plurality (seven in FIG. 8) of gas discharge ports 323, a first suction port 325, an outlet 347, and a gas inlet 353. The body 311 has a lower end 319, a suction surface 321, and a rear end 341. The body 311 is a hollow cylindrical flat bar shape. Among the suction surfaces 321 of the body 311, one of the sides with a narrow width is defined as the lower end 319. The suction surface 321 is oval. The suction surface 321 inclines backward as it progresses upward (upward in FIG. 8) from the lower end 319. The first suction port 325 is arranged on the suction surface 321. The first suction port 325 extends in the vertical direction. The first suction port 325 is oval along the outer edge of the suction surface 321. The gas discharge port 323 is arranged on the suction surface 321. The gas discharge port 323 is arranged between the lower end 319 and the first suction port 325. The gas discharge port 323 is arranged along the lower arc. A suction pipe 363 is arranged at the rear end 341. A gas pipe 351 is arranged near the rear end 341. A gas inlet 353 is arranged on the gas pipe 351.

[0026] When using the suction nozzle 310, the operator turns the gas discharge port 323 downward and brings the lower end 319 into contact with the floor surface 1. In this state, the body 311 is immersed in the liquid 2, and the suction surface 321 is brought into contact with the floor surface 1. When gas is discharged from the gas discharge port 323 arranged near the floor surface 1, the particles 3 deposited on the floor surface 1 are fluidized and float. At the same time, the liquid 2 with a low concentration of particles 3 flows into the upper part of the first suction port 325 away from the floor surface 1. As a result, inside the body 311, the apparent concentration of the particles 3 with respect to the liquid 2 decreases. And the fluidity of the particles 3 inside the body 311 and the suction pipe 363 is improved. Since the suction nozzle 310 of this embodiment has a narrow width, the suction nozzle 310 can be inserted into a narrower location.

[0027] The present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the gist of the present invention. All technical matters included in the technical idea described in the claims for utility model registration are the subject of the present invention. The above embodiments show preferred examples, but those skilled in the art can realize various alternative examples, modified examples, deformed examples, or improved examples from the content disclosed in this specification, and these are included in the technical scope described in the appended claims for utility model registration.

Explanation of reference numerals

[0028] 1 Bed surface 10, 110, 210, 310 Suction nozzles 11, 111, 211, 311 Bodies 19, 119, 219, 319 Lower ends 21, 121, 221, 321 Suction surfaces 23, 123, 223, 323 Gas discharge ports 25, 125, 225, 325 First suction ports

Claims

1. A body having a suction surface that rises from the floor surface when in use; A first suction port disposed on the suction surface; a gas discharge port disposed on the suction surface; A suction nozzle having

2. When using, The body has a lower end extending along the floor surface, The suction surface rises from the lower end, The first suction port extends along the lower end, the gas discharge port is disposed between the lower end and the first suction port. The suction nozzle according to claim 1 .

3. Particles that settle on the bed surface in the liquid are sucked together with the liquid. The suction nozzle according to claim 1 or 2.

4. The first suction port extends continuously along the lower end. The suction nozzle according to claim 1 or 2.

5. The gas discharge port is a plurality of ports. The suction nozzle according to claim 1 or 2.

6. The body is flat. The suction nozzle according to claim 1 or 2.

7. an outlet port disposed at a rear end opposite to the suction surface and connected to the first suction port; a gas inlet disposed on an opposite side of the suction surface and connected to the gas outlet; The suction nozzle according to claim 1 or 2, comprising:

8. The body further includes a second suction port disposed above the first suction port during use. The suction nozzle according to claim 1 or 2.

9. an outlet port disposed at a rear end opposite to the suction surface and connected to the first suction port and the second suction port; a gas inlet disposed on the opposite side of the suction surface and connected to the gas outlet; The suction nozzle according to claim 8.

10. The body has a lower surface. The gas inlet is disposed on the lower surface. The suction nozzle according to claim 6.

11. The body has a lower surface. Further, a blade disposed on the lower surface. The suction nozzle according to claim 1 or 2.

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