HU190560B - Method and apparatus for thickening and hydraulic transporting the mixture of solid material granules and liquid - Google Patents

Abstract

In the process according to the invention, the mixture is filled with a hydraulic filling pressure into the metering chamber (23a, 23b, 23c) of the metering chamber (A, B, C) and a portion of the liquid using the hydraulic filling pressure and / or hydraulic suction pressure from the metering space (23a, 23b). (23c) filtering a filter surface (24a, 24b, 24c) toward a fluid space (22a, 22b, 22c) and transferring the condensed mixture to the hydraulic flow-through pressure (13). A portion of the liquid from the mixture is filtered off from the dispensing chamber (23a, 23b, 23c) of the metering chamber (A, B, C) by aspirating the liquid space (22a, 22b, 22c) separated by the filter surface (24a, 24b, 24c). The apparatus comprises a mixing tank (9), a fluid reservoir (14) and a dispensing chamber (A, B, C) and a dispensing chamber (A, B, C) dispersed into the dispensing chamber (23a, 23b, 23a, 23b). 23c) and a filtrate receiving liquid area 5 (22a, 22b, 22c), including a filter surface (24a, 24b, 24c) and connecting lines (23a, 23b, 23c) (11a-11c, 12a-12c, 16a). 16c, 17a-17c), and the sealing means (10) connected to the mixing tank (9) via the locking means (la-le, 10a2-2c, 3a-3c, 4a-4c) incorporated therein, discharging to the fluid storage pool (14) delivery fluid dispenser (15) or in addition to the fluid reservoir 15 (14) is also connected to the mixing pipeline (13). The pumping side (22a, 22b, 22c) of the filtration filtrate (A, B, C) of the feed chamber is connected to the pump side. (Figure 4) 20 190560

Description

The present invention relates to a method and apparatus for compacting a mixture of solid particulate matter and liquid and for hydraulic conveying of a concentrated mixture.

Many variants of a hydraulic material conveyor for carrying solid mixtures of particulate matter and liquids by pipeline are known.

The simplest is the slurry pump hydraulic conveyor, whereby the liquid passes through the rotors of the slurry pump, so that the moving energy required for the flow of the mixture is supplied directly by the slurry pump. The slurry pumps can be placed in parallel and in series, allowing the use of slurry pumps to provide a very high performance and long range pipeline conveyor.

Hydraulic conveyors with metering chamber systems are more advanced and economical than the slurry pump system. In the system, the kinetic energy required for the flow of the mixture is provided by the pumping of pure liquid, and the dosing chambers are designed to convey the pure liquid pressure required for the flow of the mixture by atmospheric or low pressure mixture charged into the dosing chambers. Therefore, the structure and fittings of the metering chambers must be such that they can provide the conditions for "pressure mediation", also known as the "metering function".

Depending on the design of the metering chambers, one or two smaller or larger cylindrical (50-200 m ³ ) cylindrical closed pressure vessels of undivided volume are known. tank dispensers, or two or three 50-400 m long lockable and also undivided pipelines, the so-called tube chamber feeders, or so-called piping, also consisting of a 50400 m long pipeline divided into two volumes. baking chamber dispensers.

The results of the last decades show that mainly the hydraulic chambers of the kissing chamber and the chess chamber system have been built or built. In the following, in order to illustrate the state of the art of the invention, only the development and connection to the invention of the hydraulic chambers of the kissing chambers and the chute chambers will be briefly described, followed by the accompanying drawings. Referring to FIGS.

The concept of a kiss chamber dispenser was formulated by E. H. Reichl and S. A. Jones, unpublished 2,452,208, 1952. U.S. Pat. No. 928,153 In their German patent. This apparatus has a mixing tank, a fluid reservoir and at least one dosing chamber. Through the dosing chamber connection lines and the shut-off devices integrated therein, with a filling pump connected to the mixing tank, an emptying-conveying pump connected to the liquid storage tank or a pump. it is directly connected to the fluid storage pool and also to a mixing pipeline. A two-chamber device provides fluid space flow continuity and a three-chamber fluid flow continuity. In this embodiment, the kissing chambers have only a metering function, which is accomplished by actuating the locking means incorporated in the connecting line in the proper sequence.

The Reiehl-Jones tube chamber dispenser is further developed by U.S. Patent No. 160,526. A Hungarian patent according to which the dosing chambers are connected to the drainage conveying pump or via smaller diameter conduits bypassing the closures embedded in the connection pipe and the smaller closures embedded therein. with outflow zones. When using the device, when changing the pipe chambers, the pressure differences are first compensated through the smaller size closures, and only then are the closures built into the connecting pipes. This solution eliminates the adverse forces resulting from the differential pressure. but does not change the .dosing function.

Λζ Changes the function of the metering chambers in No. 176,878. Compressed-chamber process, termed and abbreviated in Hungarian patent '. The essence of the process is that the former only dosing function of the dosing chambers has been expanded by a so-called. .conditioning function 'and the two functions, dosing and compaction, are simultaneously performed in the same space, at least on one part, with a filter surface, and compression, i.e. reducing the amount of liquid in the mixture, the filling pump or the pump. is carried out by a pressurized fluid pump pump. The liquid space receiving the filtrate from the dispensing chamber through the small-diameter lines with sputtering strands to the filtrate receiving surface is provided with a discharge pump fluid pump. the fluid storage tank is connected to a pool. Closures in the small-diameter lines also provide pressure equalization.

To date, the pressurized chamber process includes two hydraulic conveyors, which may be abbreviated as a water-jet pressurized chamber dispenser (Hungarian Patent No. 176878) and a slurry pump-filled syringe chamber dispenser (Hungarian Patent Application No. AA-894). They share the same process of dividing the dosing chambers into a dosing space and a liquid space, differing in the filling of the dosing space and in the cleaning or loading of the material deposited on the filter surface. the solution is to resolve the difference between the filler and tanker pressure.

This development, while retaining certain structural elements of the Reichl-Jones system, has added a structural component to the .complexing hydraulic conveyor system to provide a .compression function.

The foregoing illustrates the evolution of the tubular chamber conveyor system, developed by E. A. Reichl and S. A. Jones in 1952, over the past 30 years.

To sum up, it can be seen that the first equipment implements the basic idea and the so-called "equipment" in the equipment. .dosing function * - achieved with slightly different structural solutions.

The first developments add new structural elements to this basic idea.

The aforementioned 160526. The Hungarian patent contains a control and actuator device which can be connected to the basic solution, which solves the difference between the filling and emptying pressure and thus provides a high level of operational safety. The Hungarian patent uses a pre-chamber to maintain the filling of the chambers. A similar construction and similar task was made in U.S. Patent No. 2,556,735. German patent. However, these additions do not change the basic function of the Reichl-Jones system, the dosing function.

The following enhancements already divide the dosing chamber, using the .drying chamber as a new structural element instead of the .chock, thereby providing the conditions for the .compression with the .dosing function. However, with the newly designed dosing chamber, the shut-off valves in the connecting ducts, the filling and discharge pumps, which are still from the Reichl-Jones system, remain.

It is an object of the present invention to provide a method and apparatus for transporting material by pipeline that retains all the results of the prior art, the structural conditions of the dosing and compaction function, but further enhances the effect of the compaction function to provide more economical mixing parameters for the hydraulic conveyor.

The essence of the process according to the invention is to filter a part of the liquid from a mixture of solid particles and liquid by suctioning a liquid space separated from the metering space of the metering chamber in order to increase the pressure difference between the liquid field and the metering space. from the liquid part of the mixture, a larger volume should flow through the filter surface into the liquid space.

The process of the present invention results in a significant reduction in the size of the filter surface, an increase in filtration efficiency, and a more uniform and safer compaction of the finer particle size mixture.

According to the invention, it is advantageous to use liquid jet pumps in the fluid compartment for suction effect and to select the fluid pressure of the fluid jet pumps as the discharge pressure, thereby mixing the vacuum in the fluid space and the the required discharge-conveying pressure is produced by the same pump or pump unit.

The use of a liquid jet pump allows the discharge pressure to perform a back flushing of the filter area from the fluid space and to compensate for the difference between the filling pressure and the discharge pressure in the dosing space.

The present invention is also a hydraulic conveying apparatus for carrying out the process comprising at least one dosing chamber, the dosing chamber of which is connected via ducts to the filler pump, the flushing fluid pump, the fluid storage pool and the mixing piping. The connecting lines have closures and the liquid chamber of the dosing chamber is separated by a filter surface from the dosing space. The essence of the invention is that the suction side of a pump is connected to the filtrate liquid space of the dosing chamber. Preferably, the pump is a liquid jet pump, the drive nozzles of which are connected to the jet conveyor fluid pump via a small diameter line. In this arrangement, the liquid jet pump sucks the liquid space, sucks the liquid portion of the mixture from the mixture in the dosing space through the filter surface and conveys it through a pass-through line to the desired location.

The suction of the fluid chamber is uniform and consequently an equal pressure difference is always ensured between the dosing space and the fluid chamber.

In this arrangement, it is also possible to rinse the filter surface through the fluid jet pump and pressurize the rifle carrier fluid pump to compensate for the difference between the runner carrier and the occupant.

Thus, in the hydraulic conveyor according to the invention, through the fluid jet pump, the conveyor fluid pump provides continuous suction of liquid space, back flushing of the filter surface,

-4lyuööo, οΈά balancing the pressure difference between the pressurized and discharge carrier __ /, and the removal of the filtrate.

Thus, the dosing chamber also has a dosing 'and' thickening 'function here, and this dense function cannot be separated either in time or space from the dosing function, but the efficiency of the dosing function is greatly increased by the liquid space being sucked . Here, the hydraulic conveyor is also a more efficient crushing machine than before. and dispensing equipment. Improved compaction is the result of the design of the dosing chamber, the existence of the dosing chamber and the fluid chamber, the filter surface, the liquid jet pump, the sludge pump, and the jet conveyor fluid pump, i.e. the entire apparatus.

The subject matter of the invention, as well as the main known solutions, will now be described in detail with reference to embodiments and drawings. In the drawing it is

Figure 1: A known two-chamber Reichl-Jones hydraulic chassis conveyor,

Fig. 2 is a schematic diagram illustrating the function of the pressure relief valve of Fig. 2, a hydraulic conveyor with a known three-chamber metering system;

Fig. 3 is a hydraulic conveyor of a known compression chamber, a

Figures 3 / a and 3 / b are schematic diagrams illustrating the function of the filter return and pressure compensating closures of Fig. 3,

Fig. 4 shows a hydraulic conveyor according to the invention, a

Figures 4 / a and 4 / b are schematic diagrams illustrating the function of the fluid jet pump of Fig. 4 and its associated closures.

The structural features of the Reichl and Jones Hydraulic Conveyor with Kiss Chamber System are shown in Figure 1 on a two-chamber machine. The basic elements of the apparatus are the mixing tank 9, the filling pump 10 which fills the mixing tank 9 into the metering chambers A, B, the fluid storage pool 14, and the tank transport fluid pump 15 which withdraws the fluid from the fluid storage pool 14. , B from metering chambers and pushing it into the mixing valve 13. The metering chambers A, B are formed by two 50400 m long pipelines, which are connected via the connecting lines 11a, lib, 12a, 12b, 16a, 16b, 17a, 17b to the filler pump 10, and through the pressure line 19 to the jet conveyor fluid pump 15. , with the mixing pipeline 13 and through the drain line 18 to the liquid storage pool 14. Four la-4a or four tubes per tube chamber. 11b, 11b, 12a. 12b, 16a, 16b, 17a, 17b incorporated in connecting conduits which define the volume of the dispensing space 23a and 23b. The operation of the pumps, valves, and electrical equipment built into the conveying system is controlled by a control device.

The l. The operation of the known apparatus of FIG.

In the outlined position, the dosing chamber A a is emptied and the dosing chamber B is being filled. The mixture of a given composition is drawn by the sump pump 10 from the mixing tank 9 and pushed through the open closure 2b of the connecting line 11b into the dosing space 23b of the dosing chamber B and filled with the mixture. The inlet mixture forces the liquid in the dosing space 23b into the liquid storage basin 14 through the open closure 3b of the connection conduit 17b. Meanwhile, the fluid conveyor fluid pump 15 pushes the fluid in the fluid storage basin 14 through the open closure 4a of the duct 16a to the dosing chamber 23a, which discharges the mixture in the dosing space 23a into the open duct 13 of the duct 12a. .

After the dosing space 23a has been emptied and the dosing space 23b has been filled, the closing means la-4a, lb-4b are actuated by the control device in the specified order, and after completion of the closing-opening operations, the filler pump 10 begins to fill the dosing space 23a. 23b begins to empty the dosing space.

The closing and opening operations of the closures follow one another in such a sequence that the mix flow in the mixing pipeline 13 is continuous. For this purpose, it is only necessary to ensure the continuity of the flow of the rifle carrier. This condition can be achieved in two dosing chamber systems only when the flow of charge stops during the dosing chamber changeover period.

In the case of the Reichl-Jones kissing chamber dispenser, the dosing chamber A, B is thus a. 13 pipelines of the same size as the bulk conveyor piping, having a la-4a and a la-4a, respectively. The portion enclosed by the lb-4b closure is the undivided volume - 23a, respectively. 23b metering storage - in which the pressure drop or a2 the conditions for the dosing function are assured. This is where the 23a and 23a flows. 23b of the volume supplied by the displacement pump 10 and remain there until the required actions of the closures required to create the pressurized supply pressure and to initiate the gutter flow are carried out by the control device, and from there the urge pushes the mixer pipeline. It can be seen that in Figs. In principle, the composition of the mixture filled into the dispenser compartment 23b, in terms of solids to liquid content, should not undergo any change, either during filling of the dispenser compartment, during residence in the dispenser compartment, or during the delivery of the compartment.

Thus, in the Reichl-Jones system, the boom chambers have only a dosing function, and this function, i.e. switching from a lower filling pressure to a higher drainage flow and initiating the flows required for charging and emptying, is only incorporated in the connecting lines. locking means provided by the opening and closing operations determined by the control device.

Figure 2 illustrates an advanced three-chamber metering system hydraulic conveyor. In the apparatus, the dosing space 23a-23c of the dosing chambers A-C is also directly connected to the drain-conveying liquid pump 15 via a line of smaller diameter. with the liquid storage basin 14, the two 16a16c and 2 respectively. 3a-3c and 17a-17c respectively. 4a-4c, and a smaller size 5a-5c, respectively, in these small-diameter conductors. A closure member 6a-6c is also incorporated. The three dosing chambers allow the dosing chambers to change in addition to the fluid flow of the feeder during the change of dosing chamber.

In the outlined position, dosing chamber A is evacuated and dosing chamber B is under filling, and dosing chamber C is interrupted and the dosing conveying fluid is held in dosing space 23c under the pressure of the filling pump 10.

After emptying the dispensing space 23a of the dispensing chamber A and filling the dispensing space 23b of the dispensing chamber B, the shut-off means 1a-lc, 2a-2c, 3a-3c, 4a-4c built into the conduits 11a-11c, 12a-12c, 16a-16c, 17a-17c the smaller closures 5a-5c, 6a-6c embedded in new small-diameter lines are actuated by the control device in the specified order, and after completion of the closing-opening operations, the filler pump 10 begins to fill the metering space 23c of metering chamber C and the Dosing chamber B begins to empty the dosing space 23b and the dosing conveyor fluid flow stops in dosing chamber 23a.

The program of the control device must be such that during the changeover to the kiss, the pressure differentials before the actuation of the closures 1a-2c, 2a-2c, 3a-3c, 4a-4c, i.e. the flows starting in the dosing spaces 23a-23c, are smaller. , 6a-6c by switching on the shut-off valves as needed, and then operating the shut-off valves lalc, 2a-2c, 3a-3c, 4a-4c in order to ensure continuity of charge flow and discharge-conveyor flow.

Figures 2a and 2b illustrate schematically the function of the locking devices 5,6 incorporated for pressure equalization purposes. In Fig. 2 / a, the mixture in the dosing space 23 is at the pressure of the filler pump 10 and as a result of coupling the open sealing member 5 to the fluid carrier 15, the pressure in the dosing space 23 develops. In Fig. 2 / b, the pressurized conveyor pressure in the dosing space 23 decreases through the open closure 6 to the pressure of the filler pump 10.

The practice provided several solutions for controlling and operating the closures, i.e. the order in which they were opened and closed.

It will be appreciated from the foregoing that these additions do not alter the structure of the dosing chambers A, B, C, nor the volume or function of the dosing spaces 23a-23c, but merely provide an opportunity for the difference between the filling and discharge pressures prior to the initiation of the filler and feeder flow flows, equalize it through the small diameter lines, thereby eliminating undesirable forces due to differential pressure throughout the hydraulic conveyor, and increasing the efficiency of hydraulic transport by introducing a flow of charge flow.

These additions have greatly contributed to the recent construction of multi-chamber hydraulic conveyors and their reliable, long life.

With the above addition, although two smaller sealing elements are provided in addition to four sealing elements per dispensing chamber, the dosing function has not changed, the function being provided only by a combination of several sealing elements. Nonetheless, the new closures have significantly increased the capacity of the tube chamber dispenser, enabled the application of greater pressure on the tank-conveyor, and have also resulted in system improvements.

Figure 3 shows a three-chamber version of a known pressure chamber hydraulic conveyor.

In its construction, the Reichl-Jones structure is further recognizable in that it has 9 mixing tanks and 14 liquid storage pools, and the supply areas 23a-23c of the A, B, C metering chambers are 11a-11c, 12a-12c, 16a-16c, 17a to 17c are connected to the filler pump 10, the fluid carrier pump 15, the mixing pipeline 13, and the liquid storage basin 14, as well as to the connection lines one to four, e.g. , A locking member 4a-4c is incorporated.

The difference is in the function of the dispensing chambers A, B, C and in the design of the chambers for the purpose of the function. Λ metering chamber érdekében, B, C for compression function

It is divided into a delivery space 23a-23c for receiving ke. Bumps and a liquid space 22a-22c for receiving the filtrate, between which the filter surface 24a-24c is incorporated.

The fluid compartment 22a-22c is connected via a smaller diameter conduit 20, 21 to the tank conveyor fluid pump 15 and the fluid storage pool 14. A smaller locking member 5a-5c, 6a-6c is incorporated in the conductors 20, 21.

In the case described, the dosing chamber A is evacuated, the dosing chamber B is being filled. During filling, a portion of the fluid from the dispensing chamber 23b through the filter surface 24b is forced into the liquid compartment 22b by the pressure difference between the liquid compartment 22b and the dispensing chamber 23b, and this liquid is fed to the liquid storage basin 14 for other purposes. can be guided to the desired location. In the metering chamber C, flow is interrupted and in the metering space 23c there is a discharge conveying fluid under the pressure of the filling pump 10.

After emptying the metering space 23a of the metering chamber A and filling the metering space 23b of the metering chamber B with a thickened mixture, the la-lc, 2a-2c, 3a3c, 4a-4c sealed in the conduit 11a-11c, 12a-12c, 16a-16c, 17a-17c the closures 5a-5c, 6a-6c embedded in lines 20, 21 connected to the liquid space 22a-22c of the liquid chambers A, B, C are actuated by the control device in the specified order, and upon completion of the closing-opening operations, the it begins to fill the dosing space with the mixture, and the discharge conveying fluid pump 15 begins to drain the concentrated mixture from the dosing space 23b of the dosing chamber B, while the dosing dosing fluid flow in the dosing space 23a of the dosing chamber A stops.

Figures 3a and 3b illustrate schematically the function of the closures 5, 6 for filter return and pressure equalization. Fig. 3a shows the seconds after filling the dosing space 23, when the filling process has stopped, the shut-off valve 5 in the small-diameter line 20 has been opened and the liquid space 22 is connected to the discharge pump 15 and the filter surface 24 is started. Development of discharge-conveyor pressure in 23 dosing spaces. Fig. 3b illustrates the filling of the dosing space 23, whereby a portion of the liquid in the dosing space passes through the filter surface 24 into the liquid space 22 and exits the open closure 6 of the other small-diameter conduit 21 from the fluid space 22.

Thus, the program of the control device must be such that prior to emptying the dosing space 23b of the dosing mixture B, the filtering surface 24b between the dosing space 23b and the liquid space 22b is recirculated by the liquid Opening of the closure 5b is required. This operation also compensates for the pressure difference between filling and emptying in the dosing space 23b so that the closing and opening operations of the latches lb, 2b, 3b, 4b in the connecting ducts 11b, 12b, 16b, 17b can then be initiated to the dosing flow in the dosing space 23b of the dosing chamber and the dosing flow in the dosing space 23c of the dosing chamber C.

Of course, the control device program must also ensure that the flow of charge and the flow of tape are continuous with each change of dosing chamber.

The practice has provided several solutions for controlling and operating the closures, i.e. the order in which they are opened and locked, and their application is primarily in the physical - particle size, particle shape, particle distribution, etc. of the solid to be transported. - depends on its properties.

Thus, the metering chamber A, B, C has a .dosing 'and .compressing' function, and this .compressing function 'cannot be separated in time or space from the .dosing function', i.e. the hydraulic conveying device is both a press and a dosing device. The compaction is the result of the structural design of the dosing chamber A, B, C - the existence of the dosing space 23a-23c and the liquid space 22a-22c, the filter surface 24a-24c, the filler pump 10, the runner-transporting fluid pump 15.

The invention will be described in more detail with reference to Figure 4.

In the hydraulic conveyor according to the present invention, the mixture formed in an unspecified plant is collected in the mixing tank S. The suction side of the filling pump 10 is connected to the mixing tank 9 and its discharge side is connected to the metering chamber A, B, C via the connecting lines IIa-IIc.

In addition, the dosing chambers A, B, C are connected via the connecting lines 12a-12c to the mixing pipeline 13, the connecting lines 16a-16c and the discharge line 19, to the pressure side of the fluid delivery pump 15 and to the connecting lines 17a-17c. through the 14 fluid storage pool. The suction side of the flapper fluid pump 15 is communicating with the fluid storage pool 14. 11a-11c, 12a-16c, 17a-17c in the feed chambers A, B, C of the feed chambers Aa-lc, 2a-2c, 3a-3c,

-713

Closures 4a-4c are incorporated. The metering chambers A, B, C are divided in two into the metering space 23a23c and the liquid space 22a-22c, between which the filter surface 24a-24c is integrated. The suction side of at least one liquid jet pump 33a-33c is connected to the liquid space 22a-22c of the dispensing chambers A, B, C, and their pressure side is connected to the filtrate collecting pool 29 via the Zla-21c line and the shutter 6a-6c. The spray nozzles 34a-34c of the liquid jet pump 33a-33c are in communication with the discharge side of the discharge pump liquid pump 15 through the small-diameter pipe 20a-20c and the shut-off valve 5a-5c therein.

During operation of the hydraulic conveyor, as shown in Fig. 4, the dosing chamber A is being emptied, the dosing chamber B is being filled and the dosing chamber C is not flowing. During the filling of the dosing chamber B, the sludge pump 10 draws mixture from the mixing tank 9 and pushes it through the open closure 2b of the conduit 11b into the dosing space 23b of the dosing chamber B while the flowing mixture -transporting fluid. As the mixture passes through the filter surface 24b between the dosing space 23b and the liquid space 22b, a portion of the liquid volume of the mixture is forced from the dosing space 23b to the liquid space 22b by a pressure difference between the dosing space 23b and the liquid space 22b. The fluid jet pump 33b associated with the fluid space 22b then sucks the fluid space 22b, as the drive nozzles 34b of the fluid jet pump 33b are connected to the discharge side of the fluid port 15 through the small fluid channel 21b and and transporting it through the open closure 6b to the filtrate lighter 29,

Figures 4a and 4b illustrate the function of the closures 5, 6 for operating the fluid jet pump 33 and also for pressure equalization and filter backflow. In Fig. 4a, the jet-wind pressure in the dispensing space 23 is reduced by the open closure 6. In Fig. 4 / b, after filling, the fluid compartment 22 is connected to the fluid pump 15 through the open closure 5, which results in back flushing of the filter surface 24 and a space delivery pressure in the dosing space 23.

As shown in Figure 4, the condensed mixture in the dispensing space 23a is introduced into the dispensing space 23a of the dosing chamber A through the conduit 16a and the open zero valve 4a by the pressure of the drain-flowing liquid pump 15 through the open conduit 13 of the conduit 13a.

There is no flow in the metering space 23c of the third metering chamber C, filled with pure liquid, under pressure from the stock pump 10, since the metering space 23c is in direct contact with the discharge side of the filler pump 10 through the open closure 2c of the conduit 11c.

After the filling chamber 23b is completely filled and the A chamber 23a is completely emptied, the so-called dosing chamber starts. a switching operation, which means changing the position of the latches in the device in a specific order. In the switching operation, the order of actuation of the closures may be varied, depending primarily on the physical properties of the solid to be transported. One of its possible variants is as follows, where the serial numbers also indicate the order and pace of the actuation of the closing organs.

Step 1 3c on closure open Step 2 2b, 6b closures lock 5c, 6c closures opens Step 3 3b on closure lock Step 4 4b on closure open Step 5 lb on closure open Step 6 la on closure lock Step 7 4a on closure lock Step 8 6a on closure open Step 9 5b on closure lock

In the shifting operation, the closing members are actuated in the specified order such that, after completion of the operations of each bar, the operation of the next bar begins.

After completion of the switching operation, the filling chamber 23c of the metering chamber C is filled and the mixture is mixed and the metering chamber 23b is emptied. The flow in the dosing space 23a of the dosing chamber A stops.

The invention is not limited to the embodiment illustrated in the figure. Here, too, the dosing chamber may be horizontal and vertical, depending on the solids to be transported, the position and size of the filter surface and the operation of changing the closures. However, the dosing chamber must in all cases be provided with a dosing 'and' thickening 'function, keeping the liquid chamber of the dosing chambers under suction, draining liquid from the liquid chamber, back flushing the filter surfaces and equalizing the filling and discharge and using the pressure of the drain-conveyor fluid pump.

The process and apparatus of the present invention increase the efficiency of the compaction by increasing the uptake of liquid from the mixture by suction, thereby allowing a greater amount of liquid to flow through the filter surface. As a result, the size of the filter surface can be significantly reduced, the filtering efficiency increased, and the densification of finer-grained mixtures is more uniform and the transport is safer and more economical. The hydraulic conveyor for compaction and the transport of the concentrated mixture, like the hydraulic conveyor for the compaction chamber, cannot be separated. The hydraulic conveyor is also a thickener and a dispenser, as a result of which the possibilities of hydraulic transport may extend to solids not yet used.

Claims (5)

PATENT CLAIMS A method for thickening and hydraulic conveying a mixture of solid particulate matter and liquids, wherein the mixture is filled with a hydraulic filling pressure into a metering space of a metering chamber and a portion of the fluid is removed from the metering space through a filter surface and the mixture so concentrated is fed to the mixing pipeline by hydraulic pressure transfer pressure, characterized in that a portion of the fluid is filtered from the metering space (23a, 23b, 23c) of the metering chamber (A, B, Cl, 24c, 24c). ) by suctioning a separated fluid space (22a, 22b, 22c). Method according to claim 1, characterized in that the liquid chamber (22a, 22b, 22c), which is separated from the metering space (23a, 23b, 23c) of the metering chamber (A, B, Cl) by suction and removing the amount of liquid flowing through the filter surface (24a, 24b, 24c) into the liquid space (22a, 22b, 22c) is accomplished by means of a liquid jet pump (33a, 33b, 33c). Method according to claim 1 or 2, characterized in that the pressure of the fluid stream pump (33a, 33b, 33c) used for suctioning the liquid space (22a, 22b, 22c) is chosen to be the same as the discharge conveying pressure and the discharge-conveying pressure and the pressure of the fluid of the fluid jet pump (33a, 33b, 33c) with a common fluid pump (15) 10 were prepared. An apparatus for carrying out the process of claim 1, comprising a mixing tank, a liquid storage basin and at least one dosing chamber, the ada15 dosing chamber being divided into a direct receiving dosing mixture and a filtration receiving duct, between which a filter surface and a dosing space are provided. a sealant pump connected to the mixing tank, an emptying conveyor pump connected to the fluid reservoir, and a fluid pump connected thereto. directly connected to the fluid storage basin and also to the mixing conveyor 25, characterized in that a suction side of the pump is connected to the filtrate liquid space (22a, 22b, 22c) of the dosing chamber (A, B, C). The apparatus of claim 4, 30 characterized in that the metering chamber (A, B, C) a liquid jet pump (33a, 33b, 33c) connected to its filtrate receiving space (22a, 22b, 22c) with suction side, the discharge side of which is interconnected by a filtrate conduit (21a, 21b, 21c) with a closing member (6a, 6b, 6c). with a filtrate collecting basin (29) and / or a liquid drainage basin (14). Apparatus according to claim 5, characterized in that the drive nozzle (34a, 34b, 34c) of the liquid jet pump (33a, 33b, 33c) is provided with a small diameter conduit (20a, 20b, 20c) with a closure (5a, 5b, 5c). it is connected to the discharge side of the hydraulic drainage pressure generating fluid pump (15).