JP2018034995A - Pneumatic transportation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new pneumatic transportation device in which a longitudinal dimension is reduced.SOLUTION: There is provided a pneumatic transportation device 1 comprising: introducing granular powders in a separation chamber S together with air flow proceeding to an air delivery tube 5 from an air introduction tube 4 through the inside of the separation chamber S; and discharging the granular powder dropped on the bottom of a device main body 2 by actuating a discharging unit 3. The air delivery tube 5 is extended in the separation chamber S through the side wall face of the device main body 2 to be communicated to the inside of a bag filter 6 through the bottom of the bag filter 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pneumatic transport device for pneumatically transporting a granular material.

  Pneumatic transportation that transports powder particles existing at the transportation source to the transportation destination by placing them on the air flow is a closed circuit transportation, so there is a risk of contamination by foreign substances, contamination with bacteria, etc. Since it is small and easy to automate and save labor, it is widely used in the fields of chemicals, foods, chemical products and the like.

  As the pneumatic transport device 100 used for this pneumatic transport, as shown in FIG. 4, a device main body 2 having a separation chamber S therein, a discharge device 3 for opening and closing the bottom of the device main body 2, A structure having an air inlet tube 4 and an air outlet tube 5 communicated into the separation chamber S through the wall surface of the apparatus body 2 and a bag filter 6 is generally used (for example, the following patents). References 1 and 2).

  In the pneumatic transport device 100, a suction device such as a vacuum pump or an ejector pump is used to form an air flow from the air introduction tube 4 to the air outlet tube 5 through the separation chamber S. In the flow, the granular material existing at the transportation source is introduced into the separation chamber S through the air introduction pipe 4. Most of the granular material introduced into the separation chamber S is separated from the air flow toward the air outlet pipe 5 and is deposited on the bottom of the apparatus main body 2. The granular material deposited on the bottom of the apparatus main body 2 is discharged from the bottom of the apparatus main body 2 by operating the discharge device 3 at a predetermined timing.

  On the other hand, a part of the granular material travels toward the air outlet pipe 5 while riding on the air flow. In this air transport device 100, the upstream side of the air flow before reaching the air outlet pipe 5 Are designed to pass through the filter cloth of the bag filter 6. Accordingly, the particulate matter contained in the air flow toward the air outlet pipe 5 is collected by filtration by the bag filter 6.

  Therefore, this type of pneumatic transport device 100 includes a backwash device 7 for backwashing the bag filter 6 in order to prevent the bag filter 6 from being clogged with the collected powder particles. Some are provided. As the backwash device 7, the compressed air generated by the diaphragm valve 71 is guided into the separation chamber S through the blow tube 72 and injected from the nozzle 73 directed into the bag filter 6. What wash | cleans the filter 6 is common.

JP 2006-306627 A JP 2010-83673 A

  That is, the conventional pneumatic transport apparatus has a mechanism in which the granular material transported in the separation chamber and transported into the separation chamber is dropped to the bottom of the apparatus main body by separating from the air flow in the separation chamber. Therefore, it has been necessary to arrange an air outlet pipe on the upper side of the apparatus main body so that the air flow in the separation chamber is directed from the bottom to the top.

  For this reason, the conventional pneumatic transportation device has to be bulky in the vertical direction, and it may be difficult to secure a space for arranging the pneumatic transportation device depending on the situation of the pneumatic transportation work site.

  In addition, since the air flow in the separation chamber is directed from the bottom to the top, when a backwash device is provided in a conventional air transport device, a nozzle is placed on the top of the bag filter and sprayed during backwashing. It is necessary to make the direction of the compressed air injection direction opposite to the air flow (ie, downward). Therefore, when attaching the backwashing device, the backwashing device is arranged on the upper part of the device main body, and as a result, the bulk in the vertical direction is further increased.

  The present invention has been developed in view of the above technical problem, and an object of the present invention is to provide a novel pneumatic transport device with reduced vertical bulk.

  In order to solve the technical problem, an air transport device according to the present invention includes a device main body having a separation chamber therein, a discharge device provided at the bottom of the device main body, and air introduction communicated with the separation chamber. A pipe and an air lead-out pipe communicated with the separation chamber, and the powder particles are separated from the air introduction pipe through the separation chamber through the air flow toward the air lead-out pipe. An air transport device that discharges the granular material introduced into the room and dropped onto the bottom of the device main body by operating the discharge device, and is further included in the air flow toward the air outlet pipe It comprises a bag filter for filtering and collecting powder particles, and the air outlet pipe reaches the separation chamber through the side wall surface of the apparatus main body, and communicates with the bag filter through the bottom of the bag filter. The Characterized Rukoto (hereinafter, referred to as "inventive device".).

  The apparatus according to the present invention further comprises a backwashing device for backwashing the bag filter by injecting compressed air into the bag filter, and the blower connected to the diaphragm valve of the backwashing device. A preferred embodiment is one in which the tube reaches the separation chamber through the side wall surface of the apparatus main body, and the nozzle located at the end of the blow tube is directed into the bag filter through the bottom of the bag filter.

  In the device according to the present invention, it is preferable that the air outlet tube and the blow tube have a double tube structure in which the air outlet tube is an outer tube and the blow tube is an inner tube.

  According to the present invention, the vertical bulk of the pneumatic transport device can be reduced.

FIG. 1 is a front view showing the device of the present invention according to Embodiment 1 in a partially sectional state. FIG. 2 is a front view showing pneumatic transportation using the apparatus of the present invention. FIG. 3 is a front view showing the device of the present invention according to Embodiment 2 in a partially sectional state. FIG. 4 is a front view showing a conventional pneumatic transport device in a partially sectional state.

  Hereinafter, although the form (embodiment) for carrying out the present invention is explained based on a drawing, the present invention is not limited to this embodiment.

<Embodiment 1>
-Invention device 1-
FIG. 1 shows a device 1 of the present invention according to the first embodiment. The device 1 of the present invention includes a device main body 2 having a separation chamber S, a discharge device 3 provided at the bottom of the device main body 2, an air introduction pipe 4 communicated with the separation chamber S, and the separation chamber S. The air outlet pipe 5 and the bag filter 6 communicated with each other are provided.

-Main unit 2-
In the present embodiment, the apparatus main body 2 includes a cylindrical portion 21, a funnel portion 22 connected to the lower portion of the cylindrical portion 21, a discharge drum 23 connected to the lower portion of the funnel portion 22, and the cylindrical portion 21. And a flat plate-shaped top plate portion 24 covering the upper opening.

-Ejector 3-
In the present embodiment, the discharge device 3 includes a flap valve 31 attached to close the lower end opening of the discharge drum 23 in the device main body 2 and an actuator 32. More specifically, the actuator 32 is attached to the discharge cylinder 23 such that the rotation axis is directed in the horizontal direction, and the flap valve 31 is attached to the rotation axis of the actuator 32. . Therefore, the discharge device 3 is configured such that the flap valve 31 is opened and closed when the rotary shaft is rotated by operating the actuator 32.

  In this embodiment, the internal space of the apparatus main body 2 surrounded by the cylindrical portion 21, the funnel portion 22, the discharge drum 23, the top plate portion 24, and the flap valve 31 is the separation chamber S.

-Air introduction pipe 4-
In the present embodiment, the air introduction tube 4 is a cylindrical pipe, and is inserted into the separation chamber S through the side wall surface of the apparatus main body 2 (the side wall surface of the cylindrical portion 21). An end portion of the air introduction pipe 4 existing in the separation chamber S is curved toward the lower side of the apparatus main body 2.

-Air outlet pipe 5-
In the present embodiment, the air outlet pipe 5 is a cylindrical pipe and is inserted into the separation chamber S through the side wall surface of the apparatus main body 2.

-Bug filter 6-
In the present embodiment, the bag filter 6 has a bottomed cylindrical overall shape, and a filter cloth 61 processed into a pleat shape is arranged so as to go around the outer peripheral surface. The bag filter 6 is reinforced by a metal bottom plate 62 and a punching sheet 63 arranged so as to go around the inner peripheral surface of the bag filter 6. Further, a flange portion 64 is provided at the upper end opening of the bag filter 6.

  The bag filter 6 is attached by being screwed to the top plate portion 24 with the flange portion 64 in contact with the inner surface of the top plate portion 24 in the apparatus main body 2.

  And in this invention apparatus 1, the said air derivation | leading-out pipe | tube 5 reached in the said separation chamber S through the side wall surface of the said apparatus main body 2 further passes through the bottom part (bottom plate 62) of the said bag filter 6, and the said bag filter 6 It is communicated within.

  The device 1 of the present invention having the above-described configuration is used for pneumatically transporting powder particles. FIG. 2 shows an example of a pneumatic transportation method using the device 1 of the present invention.

  In the pneumatic transportation method shown in FIG. 2, the granular material existing in the primary container V <b> 1 at the transportation source is pneumatically transported to the secondary container V <b> 2 placed under the apparatus 1 of the present invention.

  In this pneumatic transportation method, one end of a transportation pipe P is connected to the air introduction pipe 4 of the device 1 of the present invention. The other end of the transport pipe P is connected to the primary container V1. An ejector unit E is attached to the pipe of the transport pipe P.

  In this state, when the ejector unit E is operated, an air flow from the air introduction pipe 4 through the separation chamber S to the air outlet pipe 5 is generated, and the granular material existing in the primary container V1 is generated. , And introduced into the separation chamber S through the transport pipe P. That is, the pneumatic transportation in the present embodiment is a pressure type pneumatic transportation.

  And most of the granular material introduced into the separation chamber S is separated from the air flow and deposited on the bottom of the separation chamber S. After a certain amount of powder is deposited on the bottom of the separation chamber S, the air flow is stopped by stopping the ejector unit E, and then the actuator 32 of the discharge device 3 is operated. The flap valve 31 is opened, and the granular material falls toward the secondary container V2. By this operation, the granular material existing in the primary container V1 is pneumatically transported to the secondary container V2.

  On the other hand, a part of the granular material that has not been separated from the air flow in the separation chamber S travels to the air outlet pipe 5 while riding on the air flow. The granular material is collected by filtration when passing through the filter cloth 61 of the bag filter 6 disposed on the upstream side of the air outlet pipe 5. The air flow that has passed through the bag filter 6 is discharged through the air outlet pipe 5 that communicates with the bottom (bottom plate 62) of the bag filter 6.

  As described above, the device 1 of the present invention, which is configured to guide the flow of air formed in the separation chamber S to the bottom (bottom plate 62) of the bag filter 6, the air outlet pipe 5 of the device main body 2 is used. Since it is inserted into the separation chamber S through the side wall surface, the vertical bulk is made compact. Thus, it is easy to secure a space for arranging the device 1 of the present invention at the work site.

<Embodiment 2>
-Invention device 1-
FIG. 3 shows the device 1 of the present invention according to the second embodiment. The inventive device 1 according to the present embodiment is obtained by providing a backwash device 7 to the inventive device 1 according to the first embodiment, and the rest is the same structure as the inventive device 1 according to the first embodiment. Have

-Backwash device 7-
In the present embodiment, the backwash device 7 includes a diaphragm valve 71, a blow tube 72, and a nozzle 73.

  The diaphragm valve 71 is arranged outside the device main body 2 and in a state of being side by side with the device main body 2 while being connected to the blow tube 72 attached through the side wall surface of the device main body 2. Has been.

  The blow tube 72 communicated with the separation chamber S through the side wall surface of the apparatus main body 2 has an end portion to which the nozzle 73 is attached led to the lower part of the bag filter 6.

  The nozzle 73 is directed into the bag filter 6 through the bottom of the bag filter 6.

  And in this invention apparatus 1 which concerns on this embodiment, the air derivation | leading-out pipe | tube 5 and the said blow tube 72 are the double pipe | tube structure which uses the said air derivation pipe 5 as an outer tube, and uses the said blow tube 72 as an inner tube, Has been made.

  The device 1 of the present invention according to the present embodiment is used for pneumatically transporting a granular material in the same manner as the device 1 of the present invention according to the first embodiment.

  Since the filter cloth 61 of the bag filter 6 is clogged by pneumatic transportation, the backwashing device 7 is operated at a predetermined timing in the device 1 of the present invention according to the present embodiment, and the bag filter 6 is inserted into the bag filter 6. The bag filter 6 is backwashed by injecting compressed air from the directed nozzle 73.

  In this backwashing, in the device 1 of the present invention according to the present embodiment, the nozzle 73 of the backwashing device 7 is directed into the bag filter 6 through the bottom of the bag filter 6, so the diaphragm valve 71 Compressed air generated by the above is jetted from the bottom of the bag filter 6 into the bag filter 6 through the nozzle 73.

  In this way, the device 1 of the present invention, which is configured to inject compressed air from the bottom of the bag filter 6 into the bag filter 6, arranges the diaphragm valve 71 side by side with the device body 2. Therefore, the vertical bulk is made compact.

  Further, as in the device 1 of the present invention according to the present embodiment, the air outlet pipe 5 and the blow tube 72 have a double pipe structure in which the air outlet pipe 5 is an outer pipe and the blow tube 72 is an inner pipe. Thus, not only the pressure-type pneumatic transportation but also the suction-type pneumatic transportation can be executed.

  Since the rest is the same as that of the device 1 of the present invention according to the first embodiment, the description is omitted here to avoid repetition.

  The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-mentioned embodiment is only a mere illustration in all points, and should not be interpreted limitedly. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  The present invention is suitably used as a means for pneumatically transporting a granular material.

1 Device of the present invention (pneumatic transport device)
2 Device body 3 Discharge device 4 Air inlet tube 5 Air outlet tube 6 Bag filter 62 Bottom plate (bottom)
7 Backwash device 71 Diaphragm valve 72 Blow tube 73 Nozzle S Separation chamber

Claims (3)

An apparatus body having a separation chamber inside;
A discharge device provided at the bottom of the device body;
An air introduction pipe communicated with the separation chamber;
An air outlet pipe communicated with the separation chamber;
Comprising
The particulate matter introduced into the separation chamber through the flow of air from the air introduction tube through the separation chamber to the air outlet tube, and dropped to the bottom of the apparatus main body is discharged. A pneumatic transport device that discharges by actuating the device,
Furthermore, comprising a bag filter for filtering and collecting the particulates contained in the air flow toward the air outlet pipe,
The pneumatic transport apparatus, wherein the air outlet pipe reaches the separation chamber through a side wall surface of the apparatus main body, and communicates with the bag filter through a bottom portion of the bag filter. The pneumatic transport device according to claim 1,
Furthermore, comprising a backwash device for backwashing the bag filter by jetting compressed air into the bag filter,
The blow tube connected to the diaphragm valve of the backwash device reaches the separation chamber through the side wall surface of the device main body, and the nozzle located at the end of the blow tube enters the bag filter through the bottom of the bag filter. Pneumatic transport device that is directed. The pneumatic transport device according to claim 2,
An air transportation device in which the air outlet pipe and the blow tube have a double pipe structure in which the air outlet pipe is an outer pipe and the blow tube is an inner pipe.

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