JPH0715637U - Suction nozzle - Google Patents

Abstract

(57) [Summary] [Configuration] In a cylindrical suction nozzle having a circular suction port 1, a large number of small holes 2 are provided near the suction port. The small holes are bored around the nozzle wall surface at a predetermined distance from the suction port at equal intervals. [Effect] Excellent suction performance. There is no need to reinforce the suction port. Does not generate turbulence near the suction port.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the shape of a suction nozzle used in an air carrier, a vacuum cleaner, a dust collector, and the like.

[0002]

[Prior art]

 As a method of transferring the manufactured tablets to the packaging process, for example, the tablets are once collected in a large container, then the tablets collected in the container are sucked from a suction nozzle, and the tablets are transferred to the packaging process by air transfer. There is a way. As the suction nozzle used at that time, since the suction performance is deteriorated when the suction port is in a closed state, for example, one having a slit 5 at the tip as shown in FIG. 2 or one having a brush-like tip is used. It has been done.

However, when a slit is provided at the tip of the suction nozzle or the tip is made into a brush shape, the strength of the tip of the nozzle is weakened, and this portion is crushed, which makes it easier to seal the suction port. Sometimes. For this reason, in such a suction nozzle, reinforcement such as thickening the vicinity of the suction port at the tip was necessary. In addition, the air sucked in between the slits and brushes causes turbulent flow near the suction port, which causes the sucked tablets to violently hit the inner wall of the suction nozzle or between tablets immediately after suction. There were occasions when they collided and were damaged.

[0004]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and its purpose is not to reinforce the suction port, generate turbulent flow near the suction port, and improve suction performance. To provide an excellent suction nozzle.

[0005]

[Means for Solving the Problems]

 The object of the present invention is that, in a cylindrical suction nozzle having a circular suction port, a large number of small holes are provided around the nozzle wall surface at a predetermined distance from the suction port at equal intervals. Is achieved by a suction nozzle.

The suction nozzle of the present invention has a cylindrical shape with a circular suction port, and a large number of small holes are formed at equal intervals at a position on the nozzle wall surface at a predetermined distance from the suction port. . The small hole may be provided at one place, or at two or more places at different distances from the suction port. For example, when arranging in two places, it is better to increase the number of small holes in the peripheral position near the suction port and decrease the number of small holes in the peripheral position far from the suction port. It is preferable in terms of suction efficiency. When the small holes are provided at a plurality of places, the air transfer efficiency can be further improved.

The size and number of the above-mentioned small holes are not particularly limited and may be appropriately set depending on the size of the aspirated object and the amount of air to be aspirated, but a relatively large granular material such as a tablet is inhaled. In this case, it is preferable that the inner diameter of the small hole is smaller than that of the above-mentioned granular material so that the suctioned materials do not collide with each other.

In the present invention, when the positions of the small holes are made irregular, turbulent flow occurs, and when a tablet or the like is sucked, the tablet or the like may hit and be damaged. If too many small holes are provided or the inner diameter of the small holes is too large, the suction force may decrease. Therefore, the number and size of the small holes should be set appropriately according to the purpose. It is essential.

[0009]

[Action]

 The air sucked from the small holes provided at equal intervals around the suction port increases the amount of air to be sucked and improves the efficiency of air-transporting of the suctioned object. Moreover, the air sucked from the small holes does not disturb the air flow, and the suction air flow is rectified. Further, unlike the conventional product in which the slits and brushes are formed, the small holes do not weaken the strength of the suction port, so it is not necessary to reinforce this part.

[0010]

Embodiment An embodiment of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an external perspective view showing an embodiment of the suction nozzle of the present invention. The suction nozzle basically has a cylindrical shape and is connected to an air carrier (not shown). Due to the negative pressure generated by the air carrier, the air flow from the opening (suction port) Tablets, cuttings, dust, etc. are inhaled.

The suction nozzle has a circular suction port 1 having an inner diameter of about 50 mm, and 16 small holes 2 having an inner diameter of 4 mm are provided around the nozzle wall surface 4 at a position 5 mm from the suction port 1 at equal intervals. ing. Further, in this suction nozzle, eight small holes 3 having an inner diameter of 4 mm are bored around the nozzle wall 4 at a position 20 mm from the suction port 1 at equal intervals. Each of the small holes 2 and 3 has a circular cross section. The distance from the suction port to the small hole means the distance to the center point of the small hole.

When a tablet having a diameter of 8 to 10 mm was pneumatically conveyed using the suction nozzle of this example, a large amount could be efficiently conveyed. In addition, no phenomenon that the aspirated tablet was broken was observed.

[0013]

[Effect of device]

 In the suction nozzle of the present invention, a large number of small holes are provided at a predetermined distance from the suction port on the wall surface of the nozzle, and there is no need to reinforce the tip of the suction nozzle. The turbulent air flow phenomenon seen near the suction port does not occur, and since the suctioned air amount increases, the air transfer efficiency can be improved. For this reason, for example, when pneumatically transporting tablets, by using the suction nozzle of the present invention, it is possible to prevent damage to the tablets caused by turbulent flow and transport a large number of tablets in a short time. It becomes possible.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an embodiment of a suction nozzle of the present invention.

FIG. 2 is an external perspective view showing an example of a conventionally used suction nozzle.

[Explanation of symbols]

 1 Suction port 2, 3 Small hole 4 Nozzle wall surface 5 Slit

Claims (2)

[Scope of utility model registration request] 1. A suction nozzle in the shape of a cylinder having a circular suction port, wherein a large number of small holes are perforated around the nozzle wall surface at a predetermined distance from the suction port at equal intervals. nozzle. 2. In a cylindrical suction nozzle having a circular suction port, a large number of small holes are provided around the nozzle wall surface at a predetermined distance from the suction port at equal intervals, and the predetermined distance is set. A suction nozzle characterized in that a plurality of small holes are circumferentially provided at two or more locations.