EP3464134A1 - Conveying system for bulk goods, in particular plastic granules, and method for conveying bulk goods, in particular plastic granules - Google Patents
Conveying system for bulk goods, in particular plastic granules, and method for conveying bulk goods, in particular plastic granulesInfo
- Publication number
- EP3464134A1 EP3464134A1 EP17732028.0A EP17732028A EP3464134A1 EP 3464134 A1 EP3464134 A1 EP 3464134A1 EP 17732028 A EP17732028 A EP 17732028A EP 3464134 A1 EP3464134 A1 EP 3464134A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor system
- vent valve
- valves
- pipe
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229920000426 Microplastic Polymers 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims description 35
- 230000008878 coupling Effects 0.000 claims abstract description 28
- 238000010168 coupling process Methods 0.000 claims abstract description 28
- 238000005859 coupling reaction Methods 0.000 claims abstract description 28
- 239000013590 bulk material Substances 0.000 claims description 48
- 230000008569 process Effects 0.000 claims description 25
- 239000008187 granular material Substances 0.000 claims 1
- 229920003023 plastic Polymers 0.000 claims 1
- 238000013022 venting Methods 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007786 electrostatic charging Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/52—Adaptations of pipes or tubes
- B65G53/56—Switches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
- B29B7/603—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material in measured doses, e.g. proportioning of several materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/16—Auxiliary treatment of granules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/36—Arrangements of containers
Definitions
- the invention relates to a conveyor system for bulk material, in particular plastic granules, according to the preamble of claim 1 and a method for conveying bulk material, in particular plastic granules, according to the preamble of claim 12.
- a turnout station In conveyors for bulk goods are stations that contain the bulk material and silos, for example, connected via lines with receivers. Such receivers are usually located on processing machines, with which the bulk material is processed.
- the transmitters contain different types of bulk goods which can be fed to the individual receivers.
- a turnout station In order to connect selected transmitters with selected receivers, a turnout station is provided which has inputs and outputs, with the inputs to the transmitters and the outputs to the receivers are connected.
- the recipients are supplied with different bulk material. It is therefore necessary that, when changing from one type of bulk material to the other, the delivery lines are free of the previously conveyed bulk material. In practice, however, it turns out that residues of the previously conveyed bulk material have remained in the delivery line, which mix with the other bulk material to be conveyed through this delivery line.
- the invention has for its object to form the generic conveyor system and the generic method so that a simple design and handling a change in the bulk material to be conveyed is easily possible.
- the suction fan remains in operation, so that safe represents is that the residual material still present in the delivery line is sucked to the receiver. As a result, no residual material of the conveyed bulk material remains in the line.
- the cleaning process initiated by opening the vent valve ensures that no residual material remains in the delivery line.
- the suction fan is disconnected from the receiver by closing a corresponding valve. As a result, the negative pressure in the delivery line of this receiver to the transmitter collapses because the vent valve is still open. Due to the cleaning process, the receiver can then be supplied with another type of bulk material. The cleaning process ensures that the new bulk material is not contaminated by parts of the previous bulk material type. Before the new delivery process is started, the vent valve is closed again and the valve between the suction fan and the receiver is opened.
- the coupling tube has two pipe sections.
- the one pipe section is provided with the inputs and the other pipe section with the outputs.
- a different number of inputs and outputs can be provided.
- Such a conveyor system can be upgraded by attaching additional inputs and / or outputs.
- the coupling tube is U-shaped.
- the two legs of the U-shaped coupling tube form the pipe sections on which the inputs and the outputs are provided.
- the U-shaped design of the coupling tube leads to a very compact, requiring little space design.
- the pipe sections of the coupling tube can also be arranged at an angle to each other, for example at right angles.
- the cleaning can be further improved if a further vent valve is provided at the free end of the pipe section having the outputs. If this further vent valve is opened, then a countercurrent arises which ensures that residual particles still present are removed in the region between this further vent valve and the respective outlet. These residual particles may, for example, get stuck on the inner wall of the delivery line as a result of electrostatic charging. These particles are taken by the countercurrent.
- the further vent valve is provided with a smaller opening cross-section than the other vent valve. In this way it is ensured that the main flow formed by this other vent valve promotes the entrained by the countercurrent residual material towards the receiver. This ensures optimal cleaning of the respective delivery line.
- the coupling tube in the region between the inputs and the outputs on a third vent valve. It ensures that material from the transmitter is not inadvertently retightened with the first vent valve open.
- valves are connected to a common control. Then these valves can be switched exactly at the right time to start a new delivery process or to clean the delivery line after completion of the delivery process.
- the exhaust control valves provided on the transmitters and the valves provided at the receivers, which connect the receivers to the suction fan, are also connected to the control system. As a result, a fully automatic operation of the conveyor system is possible.
- the inputs and / or the outputs are arranged at an angle to each other at the respective pipe sections of the coupling tube alternately.
- the inputs or outputs present along the pipe sections can be arranged offset from each other by 90 °.
- This angular offset arrangement also has the advantage that the corresponding inputs or outputs can be easily installed and control technology easily connected to the controller.
- the vent valve is opened shortly before completion of a delivery process.
- the vent valve is closed.
- the conveyance of the bulk material from the transmitter to the receiver is interrupted immediately.
- the suction fan remains in operation, so that the residual material still in the delivery line is sucked into the receiver.
- part of the venting stream also reaches the delivery line section extending to the transmitter. As a result, the region of the inlet in the direction of the transmitter is also cleaned of adhering bulk material particles.
- a third vent valve is opened, which is located in the region between the first and the second vent valve on the coupling tube of the points station.
- This third vent valve forms a safety valve, which prevents any of the transmitter still nachikies minor bulk material enters the delivery line.
- the first vent valve may be formed so that it generates a sufficiently strong main flow to reliably clean the feed line, without the risk that inadvertently bulk particles are drawn from the transmitter by this strong main flow.
- FIG. 2 is a side view of a points station of the conveyor system according to the invention
- FIG. 3 is a view in the direction of arrow III in Fig. 2,
- FIG. 4 in a schematic representation of a second embodiment of a conveyor system according to the invention.
- the conveyor system transports bulk materials, in particular plastic granules, from transmitters to receivers.
- the conveyor system has, by way of example, three transmitters A to C, which can be connected by way of example to four receivers I to IV via lines.
- a points station 1 is provided, with which the line connection between the transmitters A to C and the receivers I to IV can be selectively established.
- the transmitters A to C are reservoirs, such as silos, in which the bulk material is stored.
- the recipients I to IV sit on (not shown) processing machines with which the bulk material is processed. In the recipients I to IV, the bulk material is collected and separated from the air.
- the points station 1 has a central coupling tube 2, which is advantageously formed U-shaped.
- inputs 4 to 6 are provided, which are connected via lines 7 to 9 at outlets 10 to 12 of the transmitter A to C.
- the outlets 10 to 12 are provided with outlet valves, which are opened in the promotion of the bulk material from the respective transmitter A to C.
- the inputs 4 to 6 are connected to the pipe leg 3 branch pipes, which run upwards and in each of which a valve 13 is seated, with which the passage of the respective input. 4 until 6 can be opened or closed.
- the pipe leg 3 advantageously extends upwards and is provided at the free end with a vent valve 14. It is closed during the delivery process.
- outputs 16 to 19 are provided, which are also formed as branch pipes extending from the pipe leg 15 obliquely upward.
- a valve 20 In the outputs 16 to 19 is in each case a valve 20. With the valves 20, the passage of the outputs 16 to 19 can be selectively opened and closed.
- the outputs 16 to 19 are connected by a respective line 21 to 24 with the receivers I to IV.
- vent valve 25 At the free end of the tube leg 15, which extends advantageously upwards and parallel to the tube leg 3, there is a vent valve 25 which is closed during the promotion.
- At least one suction fan 26 is provided, which is connected via suction lines 27 to 30 with the receivers I to IV. These suction lines 27 to 30 open into the cover part of the receivers I to IV.
- the delivery lines 21 to 24 are connected laterally near the ceiling to the receivers I to IV.
- Within the receivers I to IV is in a known manner (not shown) grid or filter, with the aid of which the conveyed bulk material is separated from the air. The bulk material remains in the receiver I to IV, while the air enters the suction lines 27 to 30.
- valves 13, 20 are switched so that the bulk material from the corresponding transmitter A to C can be promoted to the desired receiver I to IV.
- valve 13 is opened in the entrance 6, so that the bulk material can pass through the line 9 and the open input 6 in the coupling tube 2.
- the valve 20 of the output 19 is opened, so that the bulk material can be conveyed via the line 24 to the receiver I.
- the remaining valves 13, 20 are closed in this example.
- the transmitter A to C can be selectively connected to each of the receivers I to IV.
- the blower 26 the bulk material is sucked out of the transmitter and fed to the respective receiver.
- valves 13 of the inputs 4, 5 and the valves 20 of the outputs 16 to 18 are closed.
- the vent valves 14, 25 are closed.
- the vent valve 14 is opened via a controller.
- the promotion of the bulk material from the transmitter A to the receiver I is interrupted immediately. Since the suction fan 26 continues to work, the remaining in the lines 9, 24 remaining of the bulk material is sucked to the receiver I.
- a portion of the air flow, which passes through the open vent valve 14 in the coupling tube 2 also flows in the direction of the transmitter A, whereby the input 6 is cleaned by adhering Schüttgutteilchen.
- valve 31 of the receiver I remains open during the described cleaning process, so that the suction flow is maintained even when the vent valve 14 is open to the receiver I. If the cleaning process is completed, the valve 31 of the receiver I is closed. As a result, the negative pressure in the lines 24, 3, 15, 6 and 9 coincides because the vent valve 14 is still open. Subsequently, the valves 13 and 20 in the input 6 and in the output 19 are closed.
- valves 13, 20, 31 are properly opened or closed, they are connected to a (not shown) control, with which they can be selectively opened or closed.
- the controller checks after completion of the cleaning process, whether the valves 13 and 20 in the input 6 and in the output 19 and the valve 31 are closed. As soon as one of the receivers I to IV requests new material, the controller switches the corresponding valves 13, 20, 31 such that the respective transmitter A to C is connected to the respective receiver I to IV. The corresponding valves 13, 20, 31 are opened. At the same time or shortly before the vent valve 14 is closed in the points station 1. Now, the corresponding valve 31 can be opened in the receivers I to IV, so that the bulk material from the selected transmitter A to C can be supplied to the receiver I to IV with the valve 31 open.
- the coupling tube 2 which is closed as well as the vent valve 14 during the delivery process.
- the venting valve 14 opens in the described manner. As a result, the delivery flow in the respective transmitter line 7 to 9 is stopped immediately. After a time delay, the vent valve 25 of the points station 1 is also opened.
- the venting valve 25 is designed so that the opening ses vent valves 25 resulting counterflow compared to the main flow, which arises by opening the vent valve 14, is low.
- the countercurrent produced by opening the venting valve 25 ensures that any bulk material in the region between the venting valve 25 and the respective outlet 16 to 19 which has become stuck to the inner wall of the tubular leg, for example as a result of electrostatic charging, falls downwards and then from the main flow. which is formed by the open vent valve 14, is reliably taken.
- a further vent valve 32 which ensures that not unintentionally still little material from the respective transmitter A to C is subtracted.
- the points station 1 with the three vent valves 14, 25, 32 is provided. They are closed during the conveyance of the bulk material. If the desired flow has been promoted by the transmitter A to C to the receiver I to IV, the vent valve 14 is first opened, whereby the flow in the transmitter line is stopped immediately. After a time delay, the vent valve 25 is opened to empty the lines. After a further time delay, the vent valve 32 is opened. In this way it is ensured that the pipes are cleaned, in particular the passage of the bulk material through the inputs 4 to 6 to the outputs 16 to 19. Subsequently, the blower 26 is turned off. Subsequently, a new conveying process can be started.
- All valves 13, 14, 20, 25, 31, 32 are connected to the control of the conveyor, so that the conveying process including the cleaning can be controlled automatically.
- 2 and 3 show a concrete embodiment of the points station 1 with the U-shaped coupling tube 2. It has the two mutually parallel, upwardly directed tube legs 3, 15, which merge into one another via a curved section 33. From the pipe leg 3 branch off the obliquely upward inputs 34, 35, which are formed by obliquely upward pipe sections. In each input 34, 35 is a valve 13, which is advantageously designed as a slide valve, which can be actuated by means of a drive 36, preferably an electric motor. Such motor-driven valves are known and are therefore not explained in detail.
- the branch pipes 34, 35 are provided in the longitudinal direction of the pipe leg 3 alternately offset by approximately 90 ° to each other. As a result, the branch pipes 34, 35 with the associated valves 13 can be arranged very close to each other.
- the outputs 37, 38 are obliquely upward branch pipes, which are alternately arranged offset by 90 ° by example from each other (Fig. 3). As a result, very many outputs 37, 38 may be provided on the pipe leg 15 with minimal space stress.
- Each of the outputs 37, 38 has the valve 20, which is advantageously designed as a slide valve. It is advantageously provided with a drive 39, which is advantageously an electric motor.
- the valves 20 with the drives 39 are preferably of the same design as the valves 13 with the associated drives 36.
- FIGS. 2 and 3 show by way of example, despite the multiplicity of inputs 34, 35 as well as outputs 37, 38 with the respective valves 13, 20 and the drives 36, 39, the points station occupies only little space.
- the valves 13, 20 are arranged and aligned with each other so that the valves of the pipe leg 3 are directed towards the valves 20 of the pipe leg 15 and vice versa. Seen in plan view of FIG. 3, the valves 13 and 20 are arranged so that they form a V, wherein the Tube legs 3, 15 are close to the V-tip.
- the drives 36, 37 are easily accessible in the installed position, so that repairs and / or maintenance can be easily performed without wires or line sections must be removed.
- All inputs and outputs of the points station 1 are rigid and stationary. In order to switch the transmitters A to C the different receivers I to IV, only the corresponding valves 13, 20 need to be opened. It is therefore not necessary to disconnect lines and re-pair.
- the lines between the transmitters A to C and the receivers I to IV are arranged in a stationary manner. This makes it easy to change the connections between sender and receiver. After each delivery process using the vent valves 14, 25, 32, a cleaning of the pipes is achieved by bulk material, no problems occur when changing the bulk material to be conveyed.
- the transmitters A to C may contain different types of bulk material, which may optionally be supplied to one or more of the receivers I to IV. Since the described cleaning is carried out after the conveying process, a problem-free change of the bulk material to be conveyed is possible.
- the recipients I to IV are filled in a known manner with a predetermined amount of bulk material (feed charge), which is then delivered to the processing machine.
- the receivers I to IV are provided with a closable outlet in the form of an outlet valve, which is opened for delivery. Once the outlet is closed again, the next fill cycle can be performed.
- Fig. 4 shows an embodiment which is formed substantially the same is like the embodiment according to FIGS. 1 to 3.
- the points station 1 in the embodiment of FIG. 4 has the coupling tube 2, the two pipe legs 3, 15 are at right angles to each other.
- On the pipe leg 3 are the inputs 4 to 6, to which via the lines 7 to 9, the outlets 10 to 12 of the transmitter A to C are connected in the manner described.
- the outputs 16 to 19 are provided, which are connected via the lines 24 to 27 with the receivers I to IV.
- vent valve 14 At the free end of the horizontally extending in Fig. 4 pipe leg 3, the vent valve 14. At the free end of the vertically extending in Fig. 4 pipe leg 15, the vent valve 25 is provided.
- the embodiment is the same design as the embodiment according to FIGS. 1 to 3.
- the conveyor system operates in the same manner, as has been explained with reference to FIGS. 1 to 3.
- the inputs 4 to 6 and the outputs 16 to 19 are each formed as branch pipes extending upward and in each of which a valve 13, 20 is seated, with which the passage of the respective input and output can be selectively opened and closed.
- the two pipe legs 3, 15 of the coupling tube 2 may also include an angle other than 90 ° with each other. This allows the local conditions are taken into account.
- the inputs 4 to 6 and the outputs 16 to 19 are also in these cases obliquely upward branch pipes.
- vent valve 32 of the previous embodiment may also be provided in the embodiment of FIG.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016007061.7A DE102016007061A1 (en) | 2016-06-03 | 2016-06-03 | Conveying system for bulk material, in particular plastic granules, and method for conveying bulk material, in particular plastic granules |
PCT/EP2017/000642 WO2017207101A1 (en) | 2016-06-03 | 2017-06-01 | Conveying system for bulk goods, in particular plastic granules, and method for conveying bulk goods, in particular plastic granules |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3464134A1 true EP3464134A1 (en) | 2019-04-10 |
Family
ID=59101429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17732028.0A Withdrawn EP3464134A1 (en) | 2016-06-03 | 2017-06-01 | Conveying system for bulk goods, in particular plastic granules, and method for conveying bulk goods, in particular plastic granules |
Country Status (4)
Country | Link |
---|---|
US (1) | US20190291977A1 (en) |
EP (1) | EP3464134A1 (en) |
DE (1) | DE102016007061A1 (en) |
WO (1) | WO2017207101A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018104952A1 (en) * | 2018-03-05 | 2019-09-05 | Windmöller & Hölscher Kg | Template device for the presentation of formulation material for an extrusion process in an extrusion device |
DE102019001471A1 (en) * | 2019-02-27 | 2020-08-27 | Walter Kramer | Suction conveyor system for bulk goods, in particular plastic granulate |
EP4049950A1 (en) * | 2021-02-24 | 2022-08-31 | Illucens GmbH | Pneumatic transport of insects |
DE102022002961A1 (en) * | 2022-08-10 | 2024-02-15 | Walter Kramer | Slide valve, module with a valve and system for conveying bulk materials with valves |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59123019U (en) * | 1983-02-07 | 1984-08-18 | 株式会社川田製作所 | Powder supply device |
DE3420972A1 (en) * | 1984-06-06 | 1985-12-12 | Bühler-Miag GmbH, 3300 Braunschweig | ARRANGEMENT FOR REMOVING GOODS FROM A FILTER SYSTEM |
DE3637701C2 (en) * | 1986-11-05 | 1997-06-19 | Motan Plast Automation Ag | Suction conveyor system |
DE3831467A1 (en) * | 1987-09-17 | 1989-04-06 | Walther Carl Kurt Gmbh | Connection system |
DE3900173C1 (en) * | 1989-01-05 | 1990-07-12 | Azo Gmbh & Co, 6960 Osterburken, De | Pneumatic suction conveyor system for the volumetric apportioning of bulk material components |
DE19803497C2 (en) * | 1998-01-30 | 2002-05-16 | Simar Foerdertechnik Gmbh | Material distribution system with several storage containers and several material processing machines, in particular plastic distribution system with plastic processing machine |
ITPD20130142A1 (en) * | 2013-05-22 | 2014-11-23 | Moretto Spa | PNEUMATIC TRANSPORT SYSTEM OF GRANULAR MATERIAL AND METHOD OF CHECKING THAT SYSTEM |
DE102013012868A1 (en) * | 2013-07-29 | 2015-01-29 | Walter Kramer | Coupling point and coupling station for a pneumatic conveying system for conveying bulk material |
-
2016
- 2016-06-03 DE DE102016007061.7A patent/DE102016007061A1/en not_active Withdrawn
-
2017
- 2017-06-01 US US16/306,588 patent/US20190291977A1/en not_active Abandoned
- 2017-06-01 WO PCT/EP2017/000642 patent/WO2017207101A1/en unknown
- 2017-06-01 EP EP17732028.0A patent/EP3464134A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2017207101A1 (en) | 2017-12-07 |
DE102016007061A1 (en) | 2017-12-07 |
US20190291977A1 (en) | 2019-09-26 |
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