EP3589570A1

EP3589570A1 - Module for a conveyor system for bulk goods, and also conveyor system for bulk goods

Info

Publication number: EP3589570A1
Application number: EP18701243.0A
Authority: EP
Inventors: Walter Kramer
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-01-11
Filing date: 2018-01-11
Publication date: 2020-01-08
Also published as: US20200055679A1; JP2020514204A; CN110035964A; DE102017000423A1; US10906757B2; WO2018130425A1; CN110035964B

Abstract

The module (19) for a conveyor system for bulk goods has at least one first tubular section (20). A second tubular section (23), which is provided with at least one coupling piece (21), branches away from said first tubular section. The second tubular section (23) adjoins a valve (13) which has three connections (25, 26). The first connection forms a flow-connection with the second tubular section (23). The second connection (26) of the valve (13) can be selectively connected to the first connection (25) by means of a first line and to the third connection (25) by means of a second line (48).

Description

Module for a conveyor system for bulk material and conveyor system

for bulk goods

The invention relates to a module for a conveyor system for bulk material according to the preamble of claim 1 and a conveyor system for bulk material according to the preamble of claim 17.

With conveyors bulk material, such as plastic granules, pneumatically conveyed from the transmitter to the consumer. The transmitter, for example a silo, stores the bulk material to be conveyed. The receivers, such as separating containers or processing machines, process the bulk material conveyed from the transmitter. The transmitters of the conveyor system can store different bulk goods. By means of a matrix station, which is arranged between the transmitters and the consumer, the required type of bulk material is supplied to the consumer. The matrix station consists of individual modules that are connected to the matrix station. Each module has a first pipe section, from which a second pipe section branches off. It is provided with a coupling piece with which the second pipe section is connected to a blocking element. With him the Durchläse can be opened or closed for the bulk material. These locking elements are structurally very complex and expensive. Since the matrix station usually has a large number of such modules and blocking elements, the conveyor system and also the individual module is correspondingly expensive to purchase.

The invention has for its object to form the generic module and the generic conveyor system so that they can be structurally simple design and manufactured inexpensively, but are reliable in use and have a long life. This object is achieved according to the invention in the generic module with the characterizing features of claim 1 and in the generic conveyor system according to the invention with the characterizing features of claim 17.

In the module according to the invention, the second pipe section is connected to a valve which is provided with three connections. The first connection of the valve is permanently connected to the second pipe section. The second port of the valve can optionally be connected via a first line to the first port and a second line to the third port. The second connection is line-connected to the load via the first line. Then the bulk material can be supplied through the valve through the first line and the second connection to the consumer. If the second and the third connection are flow-connected to one another via the second line, then the first connection via which the bulk material is supplied by the transmitter is disconnected from the consumer. In this case, the first port of the valve is airtight closed. Through the second line, a feedthrough line is formed through the valve connecting the second to the third port.

The module according to the invention is characterized by its simple structural design. It can be manufactured inexpensively and is easy to use.

Advantageously, the first and the second connection of the valve are arranged at an angle to each other. Since the second pipe section and the second connection of the consumers are connected to the first connection, a very compact design of the matrix station can be achieved by the angled arrangement of these two connections. The first pipe section of the module as well as the valve can thus be arranged in two different planes so that a matrix station with the modules is mounted on the module. can be built, in which a variety of modules can be arranged in a confined space next to and above each other.

It is advantageous if the second and the third port of the valve face each other. Then, the third port is also angled with respect to the first port to which the second pipe section is connected. Such a design of the valve contributes to the compact design of the module and thus also the matrix station, which is composed of individual modules.

Preferably, the pipes are pipe sections. They are inexpensive and easy to manufacture components, which contributes to the low-cost production of the module advantageous.

In an advantageous embodiment, the connections of the valve are formed by pipe sections. They also contribute to a cost-effective production of the module.

The lines may be part of a valve slide, which is slidably mounted in a housing. He can be moved according to the two lines between two positions. In the first position, the first line connects the first terminal to the second terminal, which is line connected to the load. The valve spool can be moved to a second position, in which the second line connects the second and the third port. The valve spool thus allows easy switching between the terminals by being moved only from one to the other position. In the housing, the valve spool is housed at least partially protected.

In a structurally simple and inexpensive design of the valve spool is frame-shaped and provided with a bottom. Such a valve spool can be very easily and cheaply finished. The frame sides and the floor can serve as closing elements, to close the respectively not required connection at the corresponding switching position of the valve spool. Then no separate closing elements are required.

The advantage here is when the valve spool has a rectangular frame. With him it is reliably possible to guide the valve spool during its displacement movement between the two switching positions.

In an advantageous embodiment, the valve slide is completely provided in the housing, so that it does not protrude from the housing in both switching positions.

In another advantageous embodiment, the housing is designed so that the valve slide protrudes with that part of the housing in which there is not required for the switching position line.

In a structurally simple design of the second and the third port of the valve are arranged on opposite side walls of the housing.

The first port to which the second pipe section is connected is advantageously located at a bottom of the housing.

On the housing, the three ports of the valve can be mounted in a simple manner, which contributes to a cost-effective production.

Preferably, the terminals are formed by pipe sections that protrude into the housing. These pipe sections have only a small length, wherein the projecting into the housing part of these pipe sections can be made very short. The housing and thus the valve can be made very compact. In this case, it is advantageous if seals are seated on the ends of the pipe sections projecting into the housing. They ensure that in the respective switching position of the valve slide a pressure-tight connection between the respective port and the lines of the valve spool is ensured. The seals themselves can be very easily and securely fastened to the protruding pipe section ends.

The lines in the valve slide are advantageously provided so that they are flush with the frame sides and the frame bottom of the valve spool. The valve spool itself is in this case designed so that it rests tightly against the respective connections with the corresponding outer sides of the frame sides and the frame bottom, so that, depending on

Switching position of the valve spool a perfect pressure-tight connection between the terminals and the respective lines of the valve spool is reached.

In principle, it is also possible to form the connections of the valve designed as pipe sections in such a way that they do not protrude into the interior of the housing, but terminate flush with the inside of the housing walls.

In this case, the lines on the valve slide in the interior of the housing so far that these lines connect depending on the position of the valve slide close to the terminals of the housing.

It is advantageous in this case if seals are seated on the ends of the lines projecting beyond the valve spool. They contribute to the pressure-tight connection in the respective switching position of the valve spool. In addition, the seals can be easily and securely fastened to the projecting ends of the cables.

The lines of the module according to the invention may also be part of a respective valve insert, which is inserted into a valve carrier. A sol- The design of the module is a very cost-effective solution and is particularly suitable when a material change of the bulk material takes place only at longer intervals. Often a change of material is only necessary once a week or even once a month. Then the use of the valve inserts for the operator of a system is an extremely cost-effective solution. He just has to use one or the other valve insert in the valve carrier.

The valve carrier advantageously has two opposing side walls and a bottom. The valve carrier is designed approximately U-shaped in this case and allows easy insertion of the respective valve core.

The first port is in this case in the bottom and the second and third ports in the side walls of the valve carrier. The three connections can thus be provided in a small space on the module.

Advantageously, the valve inserts each have a bottom and two opposing side walls. These valve inserts are designed so that they can be used in the valve carrier.

In the case of one valve insert, the first line is fastened with its ends in passage openings in the one side wall and in the bottom of the valve insert. If this valve insert is inserted into the valve carrier, then the line connection between the first and the second connection of the valve is produced via these passage openings. The valve insert and the valve carrier are of course designed so that an airtight connection between the first line and the first and the second connection is made.

The other valve insert, the second line is fixed with their ends in passages in the two side walls of the valve core. If this valve insert is inserted into the valve carrier, the second and the third port of the valve interconnected. Also in this case it is ensured that an airtight connection between the second line and the second and third terminals is ensured. The passage opening in the bottom of the valve carrier is in this case closed airtight, advantageously through the bottom of the other valve core.

Thus, the valve inserts are reliably held in the valve carrier, the valve inserts are advantageously each provided with at least one fastening part. With it, the respective valve insert can be held after insertion on the valve carrier.

A simple attachment of the valve insert on the valve carrier results when the fastening part is designed as a plug-in part, which is inserted into a plug-in opening of the valve carrier. Such a design allows easy replacement of the valve core.

The conveyor system according to the invention is characterized in that the matrix station is formed from at least two modules according to the invention.

Advantageously, the matrix station consists of a multiplicity of modules according to the invention which are plugged into one another in a simple manner. The matrix station can be created in this way simple and therefore cost-effective and in particular also be extended at any time.

Within the matrix station, the valves of the individual modules are advantageously conductively connected to one another via the second and third terminals. In addition, each valve is conductively connected via the first connection to the second pipe section of the modules.

In a preferred embodiment sits in the line connection between the matrix station and the consumer a closing against the matrix station check valve. As a result, it is possible that, for example, all valves of the matrix station can be opened, if For example, from a transmitter several consumers are supplied with bulk material. The check valves ensure that the individual consumers are supplied with the bulk material from the transmitter one after the other. Switching the valves is thus not required.

The check valves are designed to close against the matrix station when the conveyor system is a suction conveyor in which the bulk material is conveyed by means of negative pressure from the transmitter to the consumer.

The conveyor system can also work with pressure, so that in this case the check valves are not formed against the matrix station, but against the consumer closing.

The subject of the application results not only from the subject matter of the individual claims, but also by all the information and features disclosed in the drawings and the description. They are, even if they are not the subject of the claims, claimed as essential to the invention, as far as they are new individually or in combination over the prior art.

Further features of the invention will become apparent from the other claims, the description and the drawings.

The invention will be explained in more detail with reference to some embodiments shown in the drawings. Show it

1 is a schematic representation of a conveyor system according to the invention, is supplied to the bulk of broadcasters of a matrix station consumers,

Fig. 2 in an enlarged and perspective view a part of

Matrix station according to FIG. 1, 3 is an enlarged and perspective view of an inventive module of the matrix station of FIG. 2,

Fig. 4 in perspective view a valve of the invention

Module according to FIG. 3 in a first position,

Fig. 5 in a representation corresponding to FIG. 5, the valve in a second

Position,

6 shows a plan view of the valve according to FIG. 5, FIG. 7 shows a section along the line AA in FIG. 6, FIG. 8 shows a plan view of the valve according to FIG. 4, FIG. 9 shows a section along the line BB in FIG 8, FIG. 10 shows a perspective view of a second embodiment of a module according to the invention with a valve whose valve slide is in a first position, FIG.

Fig. 1 1 in a representation corresponding to FIG. 10, the inventive

Module with the valve spool in a second position,

Fig. 12

and

13, the valve of FIG. 1 1,

12 is a plan view of the valve according to FIG. 12, FIG. 15 is a bottom view of the valve according to FIG. 12, FIG. 16 is a view in the direction of the arrow XVI in FIG. 14, Fig. 17 is a plan view of the valve of Fig. 13, Fig. 18 is a bottom view of the valve of FIG. 13, FIG. 19 is a view in the direction of arrow XIX in Fig. 17, Fig. 20 is a section along the line AA in 19, Fig. 21 is a section along the line AA in Fig. 16,

22 is a perspective view of another embodiment of a module according to the invention without valve insert,

FIG. 23 is a perspective view of the module according to FIG. 22 with a first valve insert inserted, FIG.

FIG. 24 is a view corresponding to FIG. 23 of the module with the second valve insert inserted, FIG.

25 is a side view of the module of FIG. 22,

FIG. 26 shows a section along the line A - A in FIG. 25, FIG.

FIG. 27 shows a side view of the module according to FIG. 22 with the first inserted. FIG

Valve core,

28 is a section along the line A-A in Fig. 27,

29 is a side view of the module of FIG. 22 with inserted second valve insert,

30 is a section along the line AA in Fig. 29, 31 is a side view of a valve carrier of the module according to FIG. 22,

32 shows the valve carrier according to FIG. 31 in perspective view, FIG.

Fig. 33 in side view, the valve carrier 31 with inserted first

Valve core,

34 is a perspective view of the valve carrier of FIG. 33 with inserted first valve core,

35 shows in side view the valve carrier of the module according to FIG. 22 with inserted second valve insert, FIG.

36 is a perspective view of the valve carrier according to FIG. 35,

37 is an end view of the valve carrier of the module according to FIG. 22, FIG.

38 is a section along the line B-B in Fig. 37,

Fig. 39 in side view of the valve carrier with inserted first

Valve core,

40 is a section along the line B-B in Fig. 39,

Fig. 41 the valve carrier in side view with inserted second

Valve core,

42 is a section along the line B-B in Fig. 41,

Fig. 43

to 45 different views of another embodiment of a

Valve of the module according to the invention,

46 is a plan view of the valve according to FIGS. 43 to 45, 47 shows the valve according to FIGS. 43 to 45 in a perspective view,

48 shows the valve according to FIG. 47 with another position of the valve slide, FIG.

49 is a plan view of the valve of FIG. 48,

50 is a perspective view of a part of a matrix station, which is provided with the valves according to FIGS. 43 to 49,

FIG. 51 shows a side view of the matrix station according to FIG. 50. FIG.

Fig. 1 shows a schematic representation of a pneumatic suction conveyor, is conveyed with the bulk material of at least one transmitter A to C to at least one consumer 1 to 4. In the example shown, three transmitters A to C and four consumers 1 to 4 are provided. The transmitters A to C are, for example, storage containers in which the bulk material to be transported is stored. Consumers 1 to 4 may be, for example, mixing and drying plants, processing machines and the like.

Each transmitter A to C is connected via transmitter lines 5 to 7 to a matrix station 8. About them, the bulk material from the transmitters A to C to the consumers 1 to 4 via consumer lines 9 to 12 are supplied. By means of the matrix station 8, it is possible to connect each of the transmitters A to C to each of the consumers 1 to 4.

The matrix station 8 has valves 13 arranged above and next to one another, which can be switched such that the desired transmitter A to C can be flow-connected to the desired consumer 1 to 4. 1 shows by way of example that some of the valves 13 of the mat 8 are connected so that the transmitter A via the lines 7, 12 to the consumer 1, the transmitter B via the lines 6, 1 1 connected to the consumer 2 and the transmitter C via the lines 5, 10 with the consumer 3 fluidly connected is. In addition, the transmitter B via the lines 6, 9 also connected to the power line 4. This is possible because the consumers 1 to 4 are each provided with a check valve 14 to 17. These check valves 14 to 17 are associated with the consumer lines 9 to 12 and designed so that they allow the access of the respectively supplied bulk material in the consumer 1, 4, however, in non-promotion close the respective consumer line 9 to 12. Due to the check valves 14 to 17, it is possible that in the example both the consumer 2 and the consumer 4 can receive the material from the transmitter B, but not at the same time, but in succession.

The valves 13 are identical and are explained in more detail below. In Figs. 1 a and 1 b, the two positions of the valve 13 are shown. In the position shown in FIG. 1 a, the connection between the transmitter lines 5 to 7 and the load lines 9 to 12 is interrupted, so that in this position no bulk material can reach the consumers from the transmitters.

In the position shown in FIG. 1 b, the valve 13 is connected so that the bulk material from the transmitters A to C can reach the consumers 1 to 4.

The consumers 1 to 4 are connected in the embodiment shown in FIG. 1 to a common suction source 18. It is advantageously formed by a suction fan. In principle, it is possible to provide a separate suction source 18 for each consumer 1 to 4. The matrix station 8 is assembled from individual modules. Fig. 3 shows one of these modules 19. Referring to Fig. 3, the module 19 will be described in more detail.

The module 19 has a straight pipe section 20 which is provided at its in Fig. 3 lower end with its coupling piece 21, which is an example of a clamp. With the aid of the coupling piece 21, the pipe section 20 can be detachably connected to a further pipe section 20 (FIG. 2). Since the coupling pieces 21 are advantageously designed as clamps, a simple pressure-tight connection between the adjoining pipe sections 20 is ensured. The pipe sections 20 can be plugged together by a simple plugging operation to form a continuous line from the pipe sections 20 (Fig. 2). As shown in FIG. 1, a vertical line 20a, which is closed at the upper end by a blocking part 22 (FIG. 1), is formed from the assembled tube sections 20. At the other end of the lines 20a, the respective transmitter line 5 to 7 is connected by means of the coupling piece 21.

From the straight pipe section 20 branches off at an acute angle from a pipe section 23 which also extends straight and is provided at the free end with an obtuse running to him fitting 24, which is parallel to the pipe section 20. At the free end of the connecting piece 24 is also a coupling piece 21, which advantageously as

Clamp is formed. By means of the coupling piece 21 of the connecting piece 24, the valve 13 is connected, which is part of the module 19.

The branching pipe sections 23 ensure that the valves 13 are laterally in the area adjacent to the vertical pipe sections 20 (FIG. 2).

The valve 13 has on opposite sides in each case a pipe connection 25, 26. Each pipe connection 25, 26 is characterized by a short Pipe piece formed. On the free end of the pipe connection 26, a coupling piece 21 is provided, which is advantageously formed by a clamp and same training as the clamps described on the pipe sections 20 and 23, 24. The two pipe connections 25, 26 are aligned with each other.

As is apparent from Fig. 1 a, the two pipe connections 25, 26 of the valve 13 can be fluidly connected to each other. In this case, the valve 13 has no line connection to the pipe sections 20, 23rd

Via the pipe connections 25, 26, the adjacent valves 13 are connected to each other (Fig. 1), wherein the pipe connection 26 of adjacent to each consumer 1 to 4 valve 13 is connected to the respective consumer via the consumer line 9 to 12.

The line connection between the pipe connections 25, 26 via a valve spool 27 which is arranged adjustable in the valve 13.

The valve spool 27 (FIG. 3) can be moved to a position (FIG. 1 b) in which the pipe connection 26 is conductively connected to the connection piece 24 of the pipe section 23.

The valve 13 has a cuboid housing 28 in which the valve spool 27 is displaceable. The housing 28 has two mutually parallel side walls 29, 30, which are interconnected by transverse walls 31, 32, which are also parallel to each other. The side walls 29, 30 form the longitudinal sides of the housing 28, while the transverse walls 31, 32 form the narrow sides. The walls 29 to 32 are advantageously releasably connected to each other. At the top and bottom of the walls 29 to 32 are connected by a bottom 33 and a ceiling 34 together.

The opposing transverse walls 31, 32 are connected by a guide 35 for the valve spool 27 with each other. Advantageously, the guide 35 by two mutually parallel guide rods 36, 37th educated. They are located near the edge area of the transverse walls 31, 32 remote from the floor 33 and have a small distance from the side walls 29, 30. It is possible that such a guide is also present near the floor 33, so that the valve slide 27 in the housing 28 Reliable can be moved.

The valve spool 27 has a rectangular frame 38 with mutually parallel longitudinal sides 39, 40 and these connecting narrow sides 41, 42 (FIG. 6). The frame sides 39 to 42 extend almost over the entire height of the housing walls 29 to 32.

The frame sides 39 to 42 are interconnected by a bottom 43 which is provided adjacent to the bottom 33 of the housing 28 (Figure 7).

The opposite narrow sides 41, 42 of the frame 38 each have passage openings 44 for the guide rods 36, 37 (FIGS. 4 and 6). In the openings 44 may slip rings 45 are located with which a slight sliding of the valve spool 27 on the guide rods 36, 37 is possible.

In the opposite longitudinal sides 39, 40 of the frame 38 is in each case a passage opening 46, 47. The two passage openings 46, 47 are connected by a pipe section 48 with each other. It is located adjacent to the narrow side 41 of the frame 38.

If the valve slide 27 is in the position shown in FIGS. 6 and 7, the pipe section 48 connects the two pipe connections 25, 26 to each other. As is apparent from Fig. 1 a, a valve 13 passing through line is formed in this position of the valve spool 27. The pipe section 48 closes in this position airtight to the two pipe connections 25, 26 at. It is advantageous in this case if this through the passage openings 46, 47 projecting end of the pipe section 48 by a respective sealing ring 49, 50 is surrounded (Fig. 6).

In this position of the valve spool 27, its bottom 43 closes the pipe connection 57, which is provided in the bottom 33 of the housing 28 (FIG. 7). Also in this case, the pipe connection 57 is sealed airtight in the housing bottom 33.

As is apparent from Fig. 7, the passage openings 46, 47 are surrounded at a small distance from openings 51, which are formed by way of example elongated curved. They form ventilation openings which, despite the pressure applied to the insides of the housing walls 29, 30 sealing rings 49, 50 allow a slight displacement of the valve spool 27.

The valve spool 27 is provided with a further pipe section 52, which is designed as a pipe bend. The one arc section 53 connects to a passage opening 54 in the longitudinal side 40 of the frame 38 airtight.

In the position of the valve spool 27 according to FIGS. 6 and 7, the pipe section 52 is at a distance next to the pipe connections 25, 26 (FIG. 6). As a result, the two pipe connections 25, 26 in the manner described by the straight pipe section 28 connected to each other. The valve spool 27 is displaced in this position in the housing 28 so that the narrow side 42 of the frame 38 is located at a small distance next to the transverse wall 32 of the housing 28.

4, 5, 8 and 9, the valve slide 27 is displaced along the guide 35 so that the curved portion 53 airtight to the pipe connection 26 and the curved portion 55 to the pipe connection 57 in the bottom 33 of the housing 28 airtight connects. The pipe connection 25 is sealed by the longitudinal side 39 of the frame 38. In this position, the valve spool 27 of the pipe section 23 of the module 19 via the pipe section 52 with the pipe connection 26 and thus with the respective consumer 1 to 4 line connected (Fig. 1 b).

In this position, the valve spool 27 is shifted so that the

Narrow side 41 of the frame 38 adjacent to the transverse wall 31 of the housing 28 is located.

Advantageously, the valve 13 is formed so that the valve spool 27 is driven in each case to stop in the two described positions, so that the respective line connection by means of the straight pipe section 48 or the bent pipe section 52 can be reliably adjusted.

Also, the two arcuate portions 53, 55 are, as is apparent from Figs. 8 and 9, over part of its circumference surrounded by passage openings 58, 59 which are provided in the longitudinal side 40 and in the bottom 43 of the frame 38. The passage openings 58, 59 ensure that the valve slide 27 can be moved exactly between its two positions in the housing 28.

The valve 13 is designed such that the respective pipe section 48, 52, which is not in use at all, lies completely outside the area of the pipe connections 25, 26, 57. The pipe connections 25, 26, 57 lie in a common plane, advantageously centered with respect to the housing 28.

In the suction conveyor system according to FIG. 1, the valve slides of the valves 13a to 13d are moved into the position according to FIGS. 8 and 9, so that the respective pipe connections 57 are conductively connected to the pipe connections 26 of these valves via the pipe sections 52. The valve spool 27 of the remaining valves take the position as shown in FIGS. 5 to 7. The valves 13a to 13d thus form parts of the consumer lines 9 to 12, through which the bulk material conveyed by the respective transmitter line 5 to 7 is conveyed to the respective consumers 1 to 4. The adjustment of the valve spool 27 can be carried out in an advantageous manner via a (not shown) drive, so that the valve spool 27 can be moved by motor, by means of pneumatic or hydraulic and the like in the two described positions.

10 to 19 show a valve 13, which is basically the same design as the embodiment described above. Therefore, only the different features will be described below.

In the described embodiment, the frame 38 is completely housed within the housing 28 of the valve 13. In the embodiment described below, the frame 38 protrudes depending on the position over one or the other housing wall. The housing 28 is therefore much narrower than in the previous embodiment.

FIG. 10 shows the frame 38 in a position in which the pipe connection 26 is conductively connected to the bottom-side pipe connection 57. The straight piece of pipe 48 of the frame 38 is located outside of the housing 28.

The housing 28 has the two mutually parallel side walls 29, 30, to which the pipe connections 25, 26 are provided. The side walls 29, 30 connect the bottom 33 with the ceiling 34 of the housing 28. Also in this embodiment, the side walls 29, 30, the bottom 33 and the ceiling 34 are advantageously releasably connected to each other.

The side walls 29, 30 and the bottom 33 are, seen in plan view, extended beyond the ceiling 34, so that the frame 38 is guided reliably despite the narrow design of the housing 28.

In the described embodiment, the frame 38 and thus the valve spool 27 by way of example between his in Figs. 10 and 1 1 positions shown shifted. For this purpose, a transversely projecting handle 60 may be provided on the narrow side 41 of the frame 38, with which the frame 38 can be moved securely between the two positions. The handle 60 is screwed by way of example into a threaded opening 61 (FIG. 12) in the narrow side 41 of the frame 38. Of course, any other suitable handle design can be used.

In the position of the valve spool 27 according to FIGS. 10, 12 and 14 to 16, the pipe connection 26 is connected via the bent pipe section 52 to the bottom pipe connection 57, so that the bulk material from the respective transmitter A to C to the respective consumer 1 to 4 can be promoted. The valve spool 27 is stop-limited in this position, so that the user can easily adjust this position with the handle 60.

If the valve spool 27 is displaced into its other position (FIGS. 11, 13 and 17 to 19), then, as has been described with reference to the previous exemplary embodiment, the two pipe connections 25, 26 are connected to one another by the straight pipe section 48. In this case, there is no connection via the valve 13 between the respective transmitter A to C and the respective consumer 1 to 4. The bottom 43 of the valve spool 27 closes the pipe connection 57 in this position.

Also in this second position, the valve spool 27 is stop-limited. The arcuate tube piece 52 is located in the area outside the housing 28 (Fig. 1 1, 13 and 17).

FIG. 20 shows how the two pipe connections 25, 26 are conductively connected to one another by the straight pipe section 48. The pipe connections 25, 26 and the straight pipe section 48 have the same inner diameter, so that a line 13 passing through the valves is formed with a constant internal cross-section. The pipe connection 57, to which the obliquely upwardly extending pipe sections 23 are connected, is without connection to the pipe connections 25, 26 and the pipe section 48. FIG. 21 shows the position of the valve slide 27 according to FIG. 12. In this case, the pipe connection 26 is line-connected via the bent pipe section 52 to the bottom-side pipe connection 57. Also, the pipe section 52 has the same inner diameter as the pipe connections 26, 57. In Fig. 21, the pipe section 52 is not formed as a bent, but as an angled pipe section. Such a piece of pipe can be very easily assembled from two straight pipe sections. The bulk material, which is conveyed via the pipe connection 57, passes via the pipe section 52 into the pipe connection 26 and from there to the respectively connected consumer 1 to 4.

All valves 13 of the matrix station 8 are formed in the manner described. They are structurally simple components that can be manufactured inexpensively and are reliable in use. The valves 13 ensure a long service life of the matrix station 8 and thus the entire suction conveyor.

The matrix station 8 can be easily extended with the modules 19, since the modules can be connected to each other in the manner described via simple connectors.

The suction conveyor can also work with pressure instead of vacuum. Nothing changes in the basic operation of the pneumatic conveyor system.

With the valve spool 27, it is possible in the manner described, the pipe connection 26 optionally with the pipe connection 25 or with the

Pipe connection 57 to connect. If the valve slide 27 is in the switching position shown in FIG. 11, the pipe connection 57 forming the inlet of the valve 13 is open. If the valve spool 27 is moved to the position shown in FIG. 12, the passage for the bulk material through the Valve 38 is released so that it can be promoted by the transmitter A to C to the selected consumer 1 to 4.

Depending on the position of the valve spool 27, the respective consumer line 9 to 12 can be emptied empty, which is required, for example, when changing the bulk material. There is in particular the possibility to suck even the transmitter lines 5 to 7 empty when the valve spool 27 is in the position shown in FIG.

The check valves 14 to 17 make it possible, for example, for two or all consumers 1 to 4 to receive the bulk material from a transmitter. The loading of the consumers 1 to 4 takes place in this case in succession, without the respective valves 13 must be switched. A displacement of the valve spool 27 is only required if the respective consumer 1 to 4 to be connected to another transmitter A to C.

Notwithstanding the illustrated embodiments, the pipe connections 25, 26, 57 may also be provided on the housing 28 so that they protrude slightly inwardly into the housing 28. In this case, the seals 49, 50 sitting on the protruding ends of the pipe connections 25, 26, 57. For the pipe sections 48, 52 are arranged in the valve spool 27, that they flush with the outside of the longitudinal sides 39, 40 and the bottom 43 of the Frame 38 are. Also in this case, it is ensured in both positions of the valve spool 27 that the pipe sections 48, 52 connect airtight to the corresponding pipe connections 25, 26, 57.

The modules 19 are assembled to the matrix station 8 so that the pipe sections 20 form vertical lines lying in a common plane. The consumer lines 9 to 12 and the adjoining, the valves 13 passing through lines that include the straight pipe sections 48, then advantageously extend horizontally (Fig. 1). The horizontal lines thus formed are also located in a common at a distance one above the other, which is offset to the plane in which the vertical lines are located. Such an arrangement of the vertical and horizontal lines in two different planes makes possible a very compact matrix station 8 which requires little space, even if it has a plurality of modules 19.

The embodiment according to FIGS. 22 to 42 is suitable for applications in which a material change is not performed frequently. In this case, no valve spool is provided, but there are two valve inserts used, which are used by hand in a valve carrier. The module 19 of this embodiment differs from the previous embodiments by this other design of the valve 13th

The module 19 has the straight pipe section 20 from which the pipe section 23 branches off at an acute angle. In contrast to the previous embodiments, the pipe section 23 extends directly to the valve 13th

The valve 13 has a valve carrier 62, which is formed substantially U-shaped. The valve carrier 62 has a plate-shaped base 63, which has a rectangular outline. At its two narrow sides in each case includes a plate-shaped legs 64, 65, which also has a rectangular outline. The two legs 64, 65 extend perpendicular to the base 63 and are advantageously integrally formed with it. The valve carrier 62 can be advantageously bent from a sheet metal strip.

The vertically projecting from the base 63 legs 64, 65 advantageously have the same outline shape.

The base 63 has the pipe connection 57, to which the pipe section 23 is connected. It has the coupling piece 21 (Figures 25 and 26), with which in the manner described a pressure-tight connection between the pipe section 23 and the pipe connection 57 can be made. As 25 shows, the base 63 of the valve carrier 62 is perpendicular to the axis of the pipe section 23rd

The pipe connection 57 projects through an opening 66 in the base part 63 (FIG. 38). The pipe connection 57 is surrounded at one end by a flat sealing ring 67, which rests on the base 63.

The leg 64 of the valve carrier 62 has the passage opening 46, through which the pipe connection 25 projects. Its over the leg 64 projecting end is surrounded by a flat sealing ring 68 which is connected to the

Leg 65 facing the inside of the leg 64 abuts.

The other leg 65 of the valve carrier 62 is provided with the passage opening 47, through which the pipe connection 26 protrudes. It is surrounded at its protruding end by a flat sealing ring 69 which abuts against the leg 64 facing the inside of the leg 65. The pipe connection 26 is for example longer than the pipe connection 25.

The two pipe connections 25, 26 are in accordance with the previous embodiments in alignment with each other and advantageously have the same inner diameter. The pipe connections 25, 26, 57 protrude only slightly over the base part 63 and the legs 64, 65 of the valve carrier 62 and are suitably secured in the passage openings 46, 47, 66.

The two legs 64, 65 have the part-circular passage openings 58, 59, which are arranged distributed over the circumference of the passage openings 46, 47. They have a small radial distance from the passage openings 46, 47 and ensure that the sealing rings 67 to 69 sealingly abut against the base 63 and on the legs 64, 65 of the valve carrier 62. The sealing rings 67 to 69 are so wide that they cover the passage openings.

The two legs 64, 65 of the valve carrier 62 each have an in Slit 70, 71 lying on the same height (Fig. 22), which extends from the free edge 72, 73 of the legs 64, 65 over a portion of the height of the legs. The slots 70, 71 are adjacent to a narrow side of the legs 64, 65 and in the area outside the passage openings, 46, 47 for the pipe connections 25, 26th

In the valve carrier 62 optionally two valve inserts 74 and 75 are used, with which the pipe connection 26 with the pipe connection 57 or with the pipe connection 25 can be connected in line.

According to FIG. 23, the valve insert 74, which connects the pipe connection 26 to the pipe connection 57, is inserted into the valve carrier 62. Fig. 24 shows the situation in which in the valve carrier 62 of the valve insert 75 is inserted, which connects the pipe connection 26 with the pipe connection 25.

With the two valve inserts 74, 75 it is possible, in the same way as with the valve spool 27 of the embodiments described above, to connect or disconnect the loads 1 to 4 connected to the pipe connection 26 with the transmitter lines 5 to 7.

The valve core 74 has two parallel side walls 76, 77 joined together by a bottom 78 (Figures 23 and 28). In addition, the side walls 76, 77 are joined together at one edge by a longitudinal wall 79. The longitudinal wall 79 has at its upper edge on its narrow sides projecting tongues 80, 81, which engage in the slots 70, 71 of the legs 64, 65. The tongues 80, 81 and the slots 70, 71 are formed so that the base 78 in the mounted position distance from the bottom 63 of the valve carrier 62 has (Fig. 28).

The side wall 77 of the valve insert 74 is provided with a passage opening 82 (FIG. 28) which has the same diameter as the passage opening 47 of the leg 65. In the passage opening 82 projects the pipe section 52, the end face of which is flush with the leg 65 of the valve carrier 62. facing outside of the side wall 77 is located. The pipe section 52 has the same inner diameter as the pipe connection 26, as in the previous embodiments.

The other side wall 76 may be closed so that it closes the pipe connection 25 of the valve carrier 62. In the exemplary embodiment, it has the passage opening 87 (FIGS. 30 and 34).

As in the previous embodiments, the pipe section 52 has two mutually angled pipe sections 53, 55. They each run straight and connect at right angles to each other. The pipe section 53 is fixed in the manner described in the passage opening 82 of the side wall 77.

The other pipe section 53 is fixed with its free end in a passage opening 83 which is provided in the bottom 78. Like the pipe section 53, the pipe section 55 does not project beyond the passage opening 83. The pipe section 55 has, in accordance with the previous embodiments, the same inner diameter as the pipe connection 57 of the valve carrier 62.

The two pipe sections 53, 55 of the pipe section 52 each close airtight to the pipe connections 26, 57 at. For the airtight connection between the pipe connections 26, 57 and the pipe sections 53, 55 provide the sealing rings 67, 69th

The side wall 76 of the valve insert 74 bears sealingly against the sealing ring 68 of the pipe connection 25.

The tongues 80, 81 of the longitudinal wall 79 ensure that the valve core 74 is held securely and reliably in the valve carrier 62. The valve insert 74 is formed so that the pipe sections 53, 55 connect airtight to the pipe connections 26, 57. The bulk material is thereby reliably sig promoted by the respective transmitter A to C to the respective consumer 1 to 4, as has been explained with reference to the previous embodiments.

The valve insert 75 has the straight tube piece 48 with which the two tube connections 25, 26 can be conductively connected to one another (FIGS. 30, 35 and 36). As in the previous embodiments, the pipe section 48 is straight and extends between the two side walls 76, 77 a short distance above the bottom 78 of the valve core 75. The two ends of the pipe section 48 are in the through holes 82, 87 in the side walls 76, 77 so that they do not project beyond the side walls.

Incidentally, the valve core 75 is the same as the valve core 74.

In the installation position, the pipe section 48 connects airtight to the pipe connections 25, 26, wherein the sealing rings 68, 69 (Fig. 31) provide the necessary seal. The bottom 78 of the valve insert 75 seals the pipe connection 57 in the base part 63 of the valve carrier 62 airtight. This is ensured by the sealing ring 67, against which the bottom 78 of the valve insert 75 rests airtight.

While in the previous embodiments, the two pipe sections 48, 52 are provided in the valve spool 27, in the present embodiment, the two pipe sections 48, 52 part of two valve inserts 74, 75, which can be used by the operator of the system optionally in the valve carrier 62. Incidentally, the mode of operation of the valve inserts 74, 75 corresponds to the mode of operation of the valve slide 27, so that reference is made to the previous embodiments with regard to this mode of operation.

The embodiment according to FIGS. 22 to 42 is distinguished by the fact that it can be produced extremely inexpensively. Figures 43 to 47 show a further embodiment of a valve 13 of the module 19. It has the pipe connections 25, 26, 57 which are provided according to the previous embodiment on the legs 64, 65 and the base 63 of the valve carrier 62. The valve carrier 62 is basically the same design as in the previous embodiment. The two

Legs 64, 65 of the valve carrier 62 are connected to each other by a cover member 84 which is fixed on the end faces of the two legs 64, 65. The cover part 84 has an exemplary rectangular outline and protrudes beyond the two legs 64, 65 of the valve carrier 62 both in its longitudinal and in its width direction.

The valve carrier 62 receives the valve slide 27, which has the bottom 43 which connects the two transversely projecting transverse walls 41, 42 from each other. The free ends of the two transverse walls 41, 42 are connected to each other by a ceiling 85, which is located at a small distance in the region below the cover part 84 of the valve carrier 62.

The bottom 43 and the transverse walls 41, 42 of the valve slide 27 are advantageously formed in one piece. This makes it possible, for example, to bend these parts from a sheet.

In the transverse walls 41, 42 of the valve spool 27 are the passage openings 46, 47, which are interconnected by the pipe section 48. In the area next to the pipe section 48, the angled pipe section 52 is arranged, which is also part of the valve spool 27.

The valve spool 27 is mounted suspended on the cover part 84 of the valve carrier 62. The cover part 84 is provided with a slot 86 extending transversely to its longitudinal direction (FIG. 44) through which a clamping part 88 projects, which is held in the cover 85 of the valve slide 27. In the respective position of the valve spool 27 is clamped by means of the clamping member 88 on the valve carrier 62. The clamping member 88 is advantageously a clamping screw with a spherical handle with which the clamping screw for moving the valve spool 27 can be loosened.

On the underside of the cover part 84 are two mutually parallel guides 89, 90 (FIG. 44), which extend perpendicular to the longitudinal direction of the cover part 84 and parallel to the slot 86. The guides 89, 90 are provided on their mutually facing sides with extending in their longitudinal direction grooves 91, 92, in which the cover 85 engages with its protruding edge.

The clamping part 88 passes through a marking tab 93, which extends in the direction of displacement of the valve slide 27 and is connected to the clamping part 88. On the basis of the marking tab 93 can be easily determine in which position the valve spool 27 is located.

In the position shown in FIGS. 46, 47, the marking tab 93 extends over one longitudinal edge 94 of the cover part 84. This position of the marking tab 93 indicates that the tube connection 26 is conductively connected to the tube connection 57 via the tube piece 52. The valve spool 27 is, as seen in plan view, over the longitudinal edge 94 of the cover part 84 via. The straight pipe section 48 is in this position of the valve spool 27 almost completely outside the valve carrier 62nd

The position of the valve spool 27 can be optically indicated by a corresponding mark 95 on the top of the lid member 84 and the marker tab 93. As shown in FIGS. 46, 47, there are two marking strips 95a, 95b lying in alignment with one another on the cover part 84 and a marking strip 95c lying perpendicular to them. On the upper side of the marking tab 93, a marking strip 95d and a marking strip 95e are provided. The marking strip 95e is embodied as an angle which, in the position of the valve slide 27 shown in FIGS. 46, 47, marks the marking strip 95b with the marking. streamer 95c connects. In this way, the angled pipe section 52 is symbolized on the upper side of the cover part 84.

The pipe section 52 is in the manner described pressure or airtight connected to the pipe connections 26, 57. As has been explained with reference to the previous embodiments, in this position of the valve spool 27, the bulk material is conveyed from the respective transmitter A to C to the respective consumer 1 to 4.

48, 49 show the valve spool 27 in its other position in which the straight piece of pipe 48, the two pipe connections 25, 26 pressure or airtight interconnects. The valve spool 27 has been moved by means of the clamping member 88 relative to the valve carrier 62. The ceiling 85 of the valve spool 27 protrudes in this case over the longitudinal edge 96 of the cover member 84.

In this position of the valve slide 27, the marking strip 95d of the marking tab 93 connects the two mutually aligned marking strips 95a, 95b of the cover part 84. As a result, it is also optically displayed in an advantageous manner that the two pipe connections 25,

26 are interconnected by the straight piece of pipe 48. In this case, as has already been explained to the previous embodiments, no promotion of the bulk material from the transmitter to the consumer. The pipe section 48 has the same inner diameter as the pipe connections 25, 26, so that the line 13 passing through the valve has a constant internal cross section. The angled pipe section 52 is in the position of the valve spool 27 as shown in FIGS. 48, 49 without connection to the pipe connections 25, 26th

By means of the clamping member 88 is a simple adjustment of the valve spool

27 between the two positions possible. It is advantageous here if the slot 86 in the cover part 84 is so long that the slot which passes through this slot putting clamping member 88 abuts in the respective position of the valve slide 27 at the ends of the slot 86.

The valve spool 27 can also be moved in this embodiment via a drive in the two positions, as has been exemplified in connection with the previous embodiments.

FIG. 50 shows a part of the matrix station 8 in which the valves 13 according to FIGS. 43 to 49 are located. Their pipe connections 57 are connected directly to the pipe sections 23, which branch off from the pipe sections 20 at an angle. The superimposed pipe sections 20 are pressure-tightly connected to one another in the described manner via the coupling pieces 21. The pipe sections 23 are pressure-tightly connected via the coupling pieces 21 with the pipe sections 57.

The valve spools of the valves 13 are set differently, so that the straight pipe section 48 connects the pipe connections 25, 26 (left upper and right lower valve) and the angled pipe section 52 pressure-tightly connects the pipe connection 26 with the pipe connection 57 (right upper and lower left Valve 13). In this way, depending on the position of the valve spool 27, each of the transmitters A to C can be connected to each of the consumers 1 to 4, as previously described in detail.

FIG. 50 shows that the marking 95 optically indicates which of the two pipe sections 48, 52 is connected to the corresponding pipe connections 25, 26, 57.

The embodiment according to FIGS. 43 to 50 is distinguished by its compact design. As shown in FIG. 50, the individual valves 13 and / or the modules 19 can be arranged closely alongside one another and one above the other, so that the matrix station 8 takes up only little space. The matrix station 8 forms a kind of control panel, on which the operator simply by hand mit- Tels of the respective clamping member 88 can move the valve spool 27 in the required position. The operator can close the connection from the transmitter to the receiver by a sliding movement. This automatically switches the corresponding module to empty suction. During the next conveying process after the sliding operation, the empty suction of the pipe sections connected by means of the straight pipe sections 48 takes place automatically.

If new material is to be supplied to the consumer 1 to 4 (FIG. 1), the respective valve slide is displaced by means of the clamping part 88 such that the angled tube piece 52 connects the pipe connections 26, 57 to one another.

As can be seen from FIG. 50, the matrix station 8 can be constructed by means of the modules 19 of this embodiment in such a way that the matrix station can preferably be mounted on a wall. The branching pipe sections 23 are, starting from the vertical pipe sections 20, directed to one side. The valves 13 of the modules 19 are in this case formed so that they do not protrude beyond the vertical pipe sections 20 containing level (Fig. 51).

The matrix station 8 can be easily expanded with the modules 19. Also, a conversion of the matrix station is possible in a simple manner. In addition, the matrix station 8 is inexpensive to manufacture and in the assembly. The empty suction takes place optimally when the straight pipe section 48 is connected to the pipe connections 25, 26 and the next delivery process takes place.

Claims

claims

1 . Module for a conveyor system for bulk material, with at least one first pipe section, from which a second pipe section branches off, which is provided with at least one coupling piece,

characterized in that the second pipe section (23) connects to a valve (13) having three ports (25, 26, 57) such that the first port (57) is flow-connected to the second pipe section (23), and in that the second connection (26) of the valve (13) can optionally be connected to the first connection (57) via a first line (52) and to the third connection (25) via a second line (48).

2. Module according to claim 1,

characterized in that the first and the second connection (57, 26) are arranged at an angle to each other.

3. Module according to claim 1 or 2,

characterized in that the second and third terminals (26, 25) are opposed to each other.

4. Module according to one of claims 1 to 3,

characterized in that the conduits (48, 52) are pipe sections.

5. Module according to one of claims 1 to 4,

characterized in that the connections (25, 26, 57) of the valve (13) are pipe sections.

6. Module according to one of claims 1 to 5,

characterized in that the lines (48, 52) are part of a valve slide (13) which is mounted displaceably in a housing (28).

7. Module according to claim 6,

characterized in that the valve slide (13) is frame-shaped and has a bottom (43).

8. Module according to claim 6 or 7,

characterized in that the second and third terminals (25, 26) are provided on opposite side walls (29, 30) and the first terminal (57) is provided on a bottom (33) of the housing (28).

9. Module according to one of claims 1 to 5,

characterized in that the lines (48, 52) are each part of a valve insert / 74, 75), which is insertable into a valve carrier (62).

10. Module according to claim 9,

characterized in that the valve carrier (62) has two opposing side walls (64, 65) and a bottom (62).

1 1. Module according to claim 10,

characterized in that the first port (57) in the bottom (63) and the second and third ports (25, 26) in the side walls (64, 65) of the valve carrier (62) are provided.

12. Module according to one of claims 9 to 1 1,

characterized in that the valve inserts (74, 75) each have a bottom (78) and two opposing side walls (76, 77).

13. Module according to claim 12,

characterized in that the first line (52) with their ends in passage openings (82, 83) in one side wall (77) and in the floor the (78) of the valve core (74) is fixed.

14. Module according to claim 12 or 13,

characterized in that the second conduit (48) is fixed with its ends in passage openings (82, 87) in the side walls (76, 77) of the valve core (75).

15. Module according to one of claims 9 to 14,

characterized in that the valve inserts (74, 75) have at least one fastening part (80, 81).

16. Module according to claim 15,

characterized in that the fastening part (80, 81) is a plug-in part which can be plugged into a plug-in opening (70, 71) of the valve carrier (62).

17. conveyor system for bulk material, with at least two transmitters, which are line-connected via a matrix station with at least one consumer,

characterized in that the matrix station (8) is formed from at least two modules (13) according to one of claims 1 to 16.

18. Conveying system according to claim 17,

characterized in that the valves (13) of the modules (19) via the second and third ports (26, 25) are flow-connected with each other.

19. Conveying system according to claim 17 or 18,

characterized in that in a line connection (9 to 12) between the matrix station (8) and the consumer (1 to 4) against the matrix station (8) closing check valve (14 to 17) sits.