JPH07277452A - Pipe conveyor - Google Patents

Abstract

PURPOSE:To suppress or prevent leakage of a fluid material, such as a powdery material and a liquid substance, even when a substance to be conveyed contains a fluid material, such as a powdery material and a liquid substance, and to suppress or prevent pollution of the periphery of a pipe for conveyance. CONSTITUTION:Constitution of a pipe conveyor is such that blades 3 coupled to the respective vertical rings 21 of an endless link chain 2 are moved through a pipe 1 for conveyance and a substance to be conveyed charged in the pipe 1 is conveyed by means of the blades 3. The blade 3 is formed in such a manner that the outside diameter thereof is approximately equal to the inside diameter of the pipe 1. A notch part 31 in an elongated shape is formed in the peripheral edge of the blade, and a vertical ring 21 making contact with the inner peripheral surface of the pipe 1 is fitted in the notch part 31 for coupling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe conveyer for transporting an object to be conveyed without scattering, and more specifically, to an object to be conveyed containing a fluid substance such as a liquid substance without leaking the fluid substance. The present invention relates to a pipe conveyor that can convey an object to be conveyed.

[0002]

2. Description of the Related Art As a conventional pipe conveyor of this type, there is, for example, one proposed by the present applicant in Japanese Patent Laid-Open No. 5-116729. This conveyor is provided with a pipe for transportation, a blade formed in conformity with the cross-sectional shape of the pipe for transportation, and an endless link chain connecting the blades at a predetermined interval. The endless chain is formed by connecting a large number of oval rings, and each oval ring is composed of a vertical ring oriented in the vertical direction and a horizontal ring oriented in the horizontal direction. Moreover, the blade is composed of an elastic blade formed of an elastic member such as a resin having a diameter slightly smaller than the inner diameter of the pipe, and a support body fixed to the back surface and supporting the elastic blade, which is made of metal or the like. The inside of the transfer pipe is moved while making contact with the inner surface of the transfer pipe. Also,
A U-shaped notch is formed on the peripheral edge of the blade, and the blade and the horizontal ring are connected by means such as welding with the horizontal ring in contact with the upper end of the notch. Therefore,
The blade moves while contacting the inner peripheral surface of the transfer pipe while the endless chain wound around the drive mechanism moves while contacting the inner peripheral surface of the transfer pipe, It is possible to smoothly and surely convey an object to be conveyed without leaving it in the pipe.

[0003]

However, in the case of the conventional pipe conveyor, as described above, the horizontal ring forming the endless chain is fitted in the notch of the blade, and this horizontal ring contacts the upper end of the notch. In addition, since the horizontal ring is lifted up from the pipe inner peripheral surface, a gap is formed not only inside the horizontal ring but also between the horizontal ring and the pipe inner peripheral surface in the notch of the blade. The spaces before and after being partitioned by the blade are communicated by these gaps, and the transported object leaks to the downstream side of the blade from this portion,
In particular, in the case of a transported object that contains a fluid substance such as powder or granular material, the fluid substance remains on the downstream side, and eventually these fluid substances leak to the outside of the pipe and There was a problem of pollution.

Therefore, an object of the present invention is to suppress or prevent leakage of fluid substances such as powder or granules or liquid even if the material to be transported contains fluid or powdery substances or liquid. Therefore, it is an object of the present invention to provide a pipe conveyor that can suppress or prevent contamination around the transport pipe.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to an endless chain formed by connecting a number of rings, which is arranged so as to circulate in a conveying pipe while contacting the inner surface thereof, and the endless chain. A plurality of blades respectively connected to the ring at a peripheral edge of the chain at a predetermined interval, the endless chain is moved in the pipe by the blade to transfer the object to be transferred into the pipe. In a pipe conveyor to be conveyed, the blade is formed to have an outer diameter substantially equal to the inner diameter of the pipe, and an elongated notch is provided on the peripheral edge thereof, and a ring that comes into contact with the inner peripheral surface of the pipe is fitted into the notch and connected. The above object is achieved by providing a pipe conveyor characterized by the above.

[0006]

According to the present invention, when an object to be conveyed is put into the conveying pipe, the blade is moved inside the conveying pipe through the endless chain circulatingly driven in the conveying pipe and the support fixed to the endless chain. To convey the object to be conveyed.At this time, the vertical ring of the endless chain is connected in a state where it is fitted in the notch of the blade, and there is a gap only in the ring inside the notch, so the object to be conveyed is Even if it contains a fluid material such as powder or granules, it is possible to suppress or prevent the leakage of the fluid material in the notch of the blade, which in turn suppresses contamination around the pipe. Alternatively, it is possible to reliably transport the transported object while preventing it.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in FIGS. In each of the drawings, FIG. 1 is a view showing an embodiment of the pipe conveyor of the present invention, a sectional view of a main part of an axial direction of a transfer pipe, and FIG. 2 is a front view of the blade shown in FIG. 3 is a plan view of the blade shown in FIG. 2 seen from above, FIG. 4 is a plan view of the blade shown in FIG. 2 seen from below,
FIG. 5 shows another embodiment of the pipe conveyor of the present invention.
FIG. 6 is a cross-sectional view of an essential part corresponding to FIG. 6, and FIG. 6 is a cross-sectional view of an essential part corresponding to FIG. 1 showing still another embodiment of the pipe conveyor of the present invention.

As shown in FIG. 1, the pipe conveyor according to the present embodiment has a conveying pipe 1 and an inside direction of the conveying pipe 1 which is in contact with an inner side surface (a lower inner side surface in FIG. 1) of an arrow direction. The endless link chain 2 is arranged so as to circulate to the endless link chain 2 and a plurality of blades 3 are connected to each other at a peripheral edge at predetermined intervals over the entire endless link chain. An object to be conveyed (not shown) that has been introduced into the conveying pipe 1 by moving is conveyed by the blade 3 in the direction of the arrow.

The endless link chain 2 is formed by endlessly connecting a number of oval rings made of metal or the like. The oval ring is composed of a vertical ring 21 that faces the vertical direction and a horizontal horizontal ring 22 that is connected to the front and rear of the ring 21. There is room for the blade to intervene. The endless link chain 2 configured as described above is wound around, for example, a drive sprocket (not shown) and a driven sprocket (not shown) paired with the drive sprocket, and is driven via the drive sprocket to drive the blade 3. The transfer pipe 1 is configured to move in the direction of the arrow.

Further, as shown in FIGS. 1 to 4, the blade 3 is formed into a spherical shape by a material having rigidity such as metal and has an outer diameter substantially equal to the inner diameter of the conveying pipe 1. Have And this blade 3 is shown in FIG.
As shown in FIG. 2, the convex surface faces the front in the moving direction and is connected and fixed to the vertical ring 21 at the peripheral edge. Therefore, the blade 3 moves in the conveying pipe 1 in the direction of the arrow in FIG. 1 as the endless link chain 2 is driven to circulate, and comes into sliding contact with the inner peripheral surface of the conveying pipe 1 to convey the object to be conveyed. The object is reliably conveyed to the destination while being wiped off without being blocked by the inner peripheral surface of the conveying pipe 1. The connection structure of the blade 3 and the endless link chain 2 is as follows. That is, an elongated notch 31 cut in the radial direction is formed on the peripheral edge of the blade 3 that interferes with the vertical ring 21.
The entire vertical ring 21 is fitted in the notch 31. The vertical length of the cutout 31 is substantially the same as the length of the outer circumference of the vertical ring 21 on the minor axis side, and the horizontal length of the cutout 31 forms the vertical ring 21. It is formed to have substantially the same length as the outer diameter of the round bar. Also, this notch 31
A circular arc-shaped engaging portion 32 is formed at the upper end of the vertical ring 21, and the engaging portion 32 engages with the upper side of the vertical ring 21. Both side surfaces of the notch 32 engage with both sides of the vertical ring 21. is doing. Then, the blades 3 are connected to the vertical ring 21 by means of welding (a portion indicated by short radiation in FIG. 2) 33 or the like at these engaging portions 32.

The front and rear horizontal rings 2 connected to the vertical ring 21.
Since the blade 3 is interposed in the gap between 2 and 22,
As shown in FIG. 2, the notch 31 of the blade 3 has a smaller area due to the fitting of the vertical ring 21, and is further sandwiched by the horizontal rings 22 and 22 in the front and rear thereof. Therefore, the space connecting the spaces S and S ′ in front of and behind the blade 3 is considerably narrow, surrounded by the vertical ring, the 21 horizontal rings 22 and 22 and the both side surfaces of the notch 31, so that the transported object is powdered. Even when a fluid substance such as granules or a liquid substance is contained, it becomes difficult for the fluid substance such as a powder substance or liquid substance to enter the notch 32, and the fluidity of the powder substance or liquid substance is reduced. Leakage of substances to the downstream side can be suppressed or prevented.

Next, the operation will be described. First, when the drive sprocket that receives the driving force from the drive source is driven to rotate,
The endless link chain 2 wound around this is circularly driven, and along with this, the blade 3 moves in the conveying pipe 1 as shown in FIG.
Move in the direction of the arrow as shown in. In this state, when the object to be conveyed containing a fluid substance such as powder or granules or liquid material is introduced from the charging section (not shown), the object to be conveyed is pushed by the blade 3 in the direction indicated by the arrow in the conveying pipe 1. While carrying. At this time, since the blade 3 moves while lightly contacting the inner peripheral surface of the transfer pipe 1, the transfer pipe 1 and the blade 31 are clogged with a material to be transferred, particularly a fluid substance such as a powder or a granular material. Transport without letting go. Moreover, in this embodiment, the area of the notch 31 communicating between the spaces S and S ′ in the connecting portion between the blade 3 and the endless link chain 2 is considerably narrowed by the vertical ring 21 and the horizontal rings 22, 22. Therefore, fluid substances such as powder and granules and liquid substances are notched 3
It is difficult to leak from 2 to the downstream side, and it is possible to significantly suppress or prevent leakage of fluid substances such as powdery particles and liquid substances compared with the conventional one, and further to suppress contamination around the pipe conveyor significantly. Or prevent it.

As described above, according to this embodiment, the blade 3 is formed to have an outer diameter substantially equal to the inner diameter of the pipe 1, and the vertical ring 21 is provided at the connecting portion of the blade 3 with the endless link chain 2. Since the elongated notch 31 into which the blade 3 is fitted and engaged is formed, the blade 3 moves in a stable posture while lightly contacting the inner peripheral surface of the carrier pipe 1, and the blade 3 and the carrier pipe 1 It is possible to reliably convey the material to the destination without clogging the flowable substance such as the powdery or granular material or the liquid substance in the material to be conveyed between the inner peripheral surfaces. In addition, at the intersection of the blade 3 and the vertical ring 21, the notch 32 is considerably narrower than in the conventional case, so that the powder or granules or liquid matter in the transported object from this portion to the downstream side of the blade 3 It is possible to remarkably suppress and prevent leakage of fluid substances such as, for example, compared with the conventional one, and further suppress diffusion of fluid substances such as powdery or granular materials and liquid substances to the outside of the transport pipe 1. Alternatively, it can be prevented, and the contamination around the pipe conveyor can be significantly suppressed or prevented.

Further, as shown in FIGS. 5 and 6, the pipe conveyor of the present invention may be one in which the above-mentioned blade 3 is formed in a disc shape, and the spherical blade 3 is described above. The blade 3 may be connected to the endless link chain 2 in the reverse direction (the convex surface is rearward in the moving direction). Even with such a configuration, it is possible to obtain the same effects as those of the above embodiment.

The present invention is not limited to the above embodiment, and in particular, the manner of attaching the blade 3 to the endless chain can be appropriately changed in design as necessary.
Further, as the material of the blade 31, a resin or the like can be used as long as it has rigidity, in addition to metal. In short, in the present invention, the blade is formed to have an outer diameter substantially equal to the inner diameter of the pipe, and an elongated notch is provided on the periphery of the blade, and the notch is connected with the ring contacting the inner peripheral surface of the pipe. Anything is fine. It goes without saying that this pipe conveyor is designed so that the conveying pipe can be flexibly bent as needed according to the layout of the factory to optimally design the conveying path.

The material to be conveyed to which the pipe conveyor of the present invention is applied is preferably one containing a fluid substance such as a granular material or a liquid material, but other than that, of course, the waste generated in the factory is used. However, it is not particularly limited as long as it can be transported in the pipe.

[0017]

INDUSTRIAL APPLICABILITY The pipe conveyor of the present invention suppresses leakage of fluid substances such as powder or granular material or liquid even if it is a material to be conveyed containing fluid material such as powder or granular material. Therefore, it is possible to suppress or prevent contamination around the transport pipe.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of a pipe conveyor of the present invention, and is a cross-sectional view of an essential part of a transfer pipe in an axial direction.

FIG. 2 is a front view of the blade shown in FIG. 1 as seen from the front.

FIG. 3 is a plan view of the blade shown in FIG. 2 as seen from above.

FIG. 4 is a plan view of the blade shown in FIG. 2 seen from below.

FIG. 5 is a cross-sectional view of an essential part corresponding to FIG. 1, showing another embodiment of the pipe conveyor of the present invention.

FIG. 6 is a sectional view of an essential part corresponding to FIG. 1, showing still another embodiment of the pipe conveyor according to the present invention.

[Explanation of symbols]

 1 Transport Pipe 2 Endless Link Chain (Endless Chain) 3 Blade 21 Vertical Ring (Ring in Contact with Pipe Inner Surface) 31 Notch

Claims (1)

[Claims] 1. An endless chain, which is arranged so as to circulate in a conveying pipe while contacting its inner side surface, and which is formed by connecting a number of rings, and a predetermined interval of the endless chain. A plurality of blades each connected to the ring at the peripheral edge, the endless chain in the pipe conveyer by the blade to convey the object to be conveyed in the pipe by moving in the pipe, the blade, Is formed as an outer diameter substantially equal to the inner diameter of the pipe, and an elongated notch is provided on the periphery thereof, and a ring that is in contact with the inner peripheral surface of the pipe is fitted into and connected to the notch. .