JPS61211225A - Material shifter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention relates to apparatus for transferring dry, fluid bulk materials such as granular or powdered materials, and more particularly to a novel transfer apparatus for use in such apparatus. Regarding containers.

BACKGROUND OF THE INVENTION Apparatus for conveying bulk products such as dry granular or powdered materials are generally known.

Such equipment can be used to remove cement, ash, soot, finely divided minerals,
They are particularly utilized for conveying bulk materials such as grain flour and coal fines, and generally include a substantially closed transfer vessel or tank. The granular material is sucked in from a place such as a shell of a ship or a railway vehicle through the intake port of the transfer container, and then discharged from the discharge port and transported through an air flow line to a different location such as a storage silo. It is supposed to be done. Such a device is Rlm
Black U.S. Pat. No. 3.372.958 and R.
, D. Johnson, Id. No. 3,861,830. The devices disclosed in these patents create a vacuum or suction force within the container, admit fluid particulate material into the container until it is nearly full, and then create a positive fluid pressure within the container at which point the container is nearly full. It is based on the principle that material is pumped through a discharge port into a discharge line and pneumatically transported to a remote storage or manufacturing facility. The loading and unloading of materials into and out of the container is generally performed automatically and alternately and periodically by a valve control device that alternately applies suction and air pressure to the container.

``Problem to be Solved by the Invention'' A significant drawback of air conveying systems of the type described above that utilizes substantially closed vessels or tanks is that the rather complex valve equipment and associated piping equipment is The container is provided on the outside of the container and protrudes above the container, and as a result, the transportability of the container is significantly hindered, and the container must be disassembled for transportation. This is partially due to the fact that modern roads have elevated bridges, pedestrian bridges, etc., and therefore there are laws and regulations that limit the height of cars on the road.

Another disadvantage of conventional pneumatic conveying devices using the transfer container described above is that the transfer container is equipped with a filter device inside the transfer container to prevent particulate material from entering the suction line. This reduces the effective volume within the container, ie the load capacity, and as a result the efficiency of the conveying device itself is significantly reduced.

OBJECTS OF THE INVENTION It is a general object of the present invention to provide an air transport container for use in conveying or transferring particulate materials, etc., which comprises a novel transfer vessel that significantly improves operating efficiency over conventional air transfer equipment. The purpose of the present invention is to provide a transfer device.

A more particular object of the invention is to have a transfer vessel for the periodic reception and discharge of particulate material and for the interior of the transfer vessel to filter particulate material or particles from the air drawn into the suction line. An object of the present invention is to provide an apparatus for transferring dry flowable particulate material having a novel filter arrangement which maximizes the volumetric efficiency of the material within the container while maintaining optimum filter properties.

Another object of the present invention is to provide a novel transfer container for use in air transfer devices for granular materials, etc., integrally comprising a filter receiving housing having a set of generally parallel tubular filter cartridges supported therein. The filter cartridge provides a greater effective filtration surface area than is available with conventional filters designed with the same spatial area within the filter-receiving housing.

A feature of the transfer vessel of the present invention is the provision of an internal filtration device using a plurality of parallel generally tubular filter cartridges, each filter cartridge supported on an expanded metal center tube or sleeve. It has a pleated filter element, and the filter cartridge is arranged such that the air flow is slow, allowing for more effective cleaning of the filter element.

Further objects, features and advantages of the invention, together with its construction and operation, will become apparent from the following detailed description considered in conjunction with the accompanying drawings.

Note that similar members are indicated by the same reference numerals throughout the figures.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, in particular in FIGS. 1 and 2, reference numeral 10 designates a transfer device for use with dry flowable materials, such as granular or powdered materials. The transfer device 10 is particularly suitable for transferring such granular materials from a remote location, such as a ship or railcar shell, to a different remote location, such as a storage or manufacturing facility.

The transfer device 10 typically uses a vacuum or suction inlet (
A vacuum or suction is created in the transfer (pressure) vessel indicated at 12 by means of the material inlet line (line 16) until the material level in the transfer vessel 12 reaches a predetermined level. Fluidized granular or powdered material is received in the container 12. When the material level reaches a predetermined level, positive fluid pressure is introduced into the transfer container 12 from the fluid pressure introduction line 18 to discharge the granular material. It is based on the principle of discharging through the (outlet) line (pipe) 20 and conveying it to a remote storage or manufacturing facility using fluid pressure.Here, fluid pressure refers to air pressure, but other than air Gases can also be used as transport medium.

The transfer container 12 is particularly suitable for being placed on a movable carrier so that it can be transported to any location, and
Easily connected in series to other similar transfer vessels and controlled using common pressure and suction controls to accept particulate material from a remote location into one transfer vessel while discharging it from the other transfer vessel. The operation of these transfer vessels may then be reversed to provide continuous material transfer. An example of such a device is disclosed in the Jarhad Pan Aalst application (U.S. Patent Application No. 707,700), filed June 4, 1985.

The transfer container 12 has a generally cylindrical intermediate annular wall 26 integral with the upper edge of a lower inverted frustoconical wall 28. The lower end of the inverted truncated conical wall 28 forms a circular fluid pressure inlet 30. An annular seven flange 30a is attached to the outer periphery of the introduction port 30, and serves as a connecting flange to a lower fluid pressure introduction joint 18a, which will be described later. The upper outer periphery of the annular wall 26 is integral with a generally dome-shaped upper wall 32.

Transfer container 12 is preferably constructed of a suitable metallic material;
Inside the transfer container 12, there is an internal chamber having a lower part in the shape of an inverted truncated cone so that the granular or powdered material received in the upper part of the transfer container 12 smoothly flows down toward the lower part by gravity. It is formed. Also, ゛
- the transfer container 12 is provided with means (not shown) for placing the transfer container 12 on a movable transport vehicle or a stationary location such that the longitudinal axis of its internal chamber is substantially vertical; is preferable. The annular wall 26 is preferably provided with a monitoring window 34 to facilitate monitoring of the internal chamber. An access port is formed in the annular wall 26 and is fitted with a removable cover 36 to facilitate access to the interior chamber of the transfer vessel 12 for maintenance or other purposes. To detect the level of particulate material within the transfer vessel 12, a level gauge 38 of conventional design is mounted on the dome-shaped top wall 32 and extends downward into the interior chamber of the transfer vessel 12.

Preferably, the upper wall 32 is also fitted with a pressure relief valve 40, as is well known in the art.

One feature of the present invention is that the upper wall 3 of the transfer container 12
2 is integrally formed with a filter-receiving housing, indicated at 42, within which filter-receiving housing 42 is provided, indicated at 44, from a fluid medium, such as air, drawn into the suction line 14 during the intake cycle. A filter element arrangement is housed that extends into the interior of the transfer vessel 12 to filter particulate material. Filter housing 4
2 has a substantially cylindrical annular wall 46 extending from the opening 32 a of the upper wall 32 such that its central axis is substantially parallel to the longitudinal axis of the transfer container 12 . It extends downward along the outer periphery of the opening 32a and is integrally attached to the outer periphery of the opening 32a by welding.

The lower end of the annular wall 46 is an annular edge 46a,
The edge 46a extends downwardly and projects slightly into the interior chamber within the annular wall 26, as shown in FIG. Seven flanges 48 are provided on the upper portion 46b of the annular wall 46 and project outward. A cover 50 having an annular 7 flange 52 is attached to and detachable from the 7 flange 48 by attaching the annular 7 lange 52 to the 7 flange 48 by a suitable means such as a bolt (not shown). installed.

The suction line 14 is connected approximately perpendicularly to the annular wall 46 of the filter receiving housing 42 near its upper end. A flat support plate 58 is attached inside the upper part 46b of the filter housing 42 so as to be substantially perpendicular to the longitudinal axis of the filter housing 42.

The support plate 58 has an arc-shaped outer edge extending over about 3/4 of the circumference, and the outer edge is attached to the inner circumference of the annular wall 46 by welding or the like in a liquid-tight manner. A rectangular flat baffle plate 60 has its upper end fixed to the corresponding end 58a of the support plate 58, and extends vertically downward within the filter housing 42 as shown in FIG. Both ends 60a and 60b of the baffle plate 60 are annular walls 46
The lower horizontal end 6 is fixed to the inner surface of the
0a is attached to the corresponding end of the arcuate plate 62 having an arcuate end that is fluid-tightly attached to the inner surface of the annular wall 46, or is formed integrally with the end.

In this way, a space (chamber) is formed in the upper part of the filter housing 42 that communicates with the suction line 14 .

As mentioned above, the filter element arrangement 44 is mounted to the filter receiving housing 42 so as to be interposed between the suction line 14 and the inlet end 16a of the material inlet line 16. The material inlet line 16 is configured such that the airborne particles enter the transfer vessel 12 substantially tangentially to the top wall 32 and the cylindrical annular wall 26.
It is cross-connected to the top wall 32 of the transfer container 12 .

Filter element device 44 is generally cylindrical with a closed bottom and includes a plurality of filter cartridges, each indicated at 66. The filter cartridge 66 is supported by a substantially flat metal tube plate 68 that is fluid-tightly attached to the support plate 58 by studs and nuts or the like.

The filter cartridges 66 are supported within rectangular openings formed in the support plate 58 and extend downwardly parallel to each other. In the illustrated embodiment, twenty filter cartridges 66 are supported on the tube plate 68 in four parallel rows of five equally spaced filter cartridges.

As shown in Figure 5, each filter car) IJ 66
The sleeve 72 has a cylindrical tubular porous sleeve (core) 72, and the sleeve 72 is made of a hard expanded band so that a plurality of holes or open lower portions 2a are formed uniformly distributed over its entire surface. It can be formed of metal or the like. Attached to the outer surface of each sleeve 72 is a pleated composite filter element. In the illustrated embodiment, the filter element has a filter material 74, such as a polyester filter cloth, sandwiched between two fine mesh screen layers 76a and 76b. The screen layers 76a and 76b are formed, for example, from an epoxy-coated woven screen fabric having 18 warp threads and 14 weft threads per square inch. The screen layer 74.76a.

76b has a depth of about 1-1/4 inch for an imaginary filter diameter of about 5 inches, and has about 6 pleats in a 1 inch circumferential section of the filter element. It is formed. The filter length is approximately 36 inches and the filter area of each filter cartridge 66 is approximately 20 inches.
square feet.

The filter cartridges 66 are suspended from the tubesheet 68 parallel to each other at predetermined intervals.
8 corresponding circular openings, respectively.

FIG. 6 shows an example of how the filter cartridge 66 is attached to the tube plate 68, and in this example, a plurality of threaded attachments are attached to the upper part of the extended metal sleeve 72 (two of which are attached to the shaft). (shown as 80a and 80b) are attached. The threaded mounting shaft 80a, sob passes through a through hole formed in a horizontal annular mounting 7 flange 82a of an annular filter support member (cup) 82. Each filter support member 82 has a wall 82 shaped like an inverted truncated cone.
b, and an annular woven or cloth intervening member 8
The intervening member 84 is fitted downwardly into the tube sheet 68, and the intervening member 84 is inserted into a corresponding circular opening 68 in the tube sheet 68.
It is inserted into a. The filter support member 82 is sized to closely engage the intervening member 84 within the opening 68a and to allow removal of the filter support member 82 and the filter element attached thereto from the tube plate 68. It has become.

7 of the upper end of the filter element and the filter support member 82
An annular sealing member 86 is interposed between the flange 82 & to completely seal each filter cartridge 66 to the tube plate 68. At the upper end of 66 is a venturi orifice (tube) 88.
is supported and the orifice 88 serves to more radially disperse the compressed air jet flowing downwardly through the orifice 88 during pulsed jet cleaning of the filter element, as will be described below. Filter cartridge 6
6 is removably supported on the tube plate 68 by any suitable method, such as screwing or inserting.

As shown in FIG. 4, the lower end of each filter cartridge 66 is preferably closed by attaching a dish-shaped lower end cover (end plate) 92 to the lower end of the corresponding filter element. The above metal sleeve 7
It is attached to the lower end of 2. A fixed frame 94 made of mutually connected band plate members is attached to the lower end cover 92 of the filter cartridge 66, and a fixed frame 94 is attached to the lower end cover 92 of the filter cartridge 66.
Even though the filter cartridge 66 is subjected to differential pressure acting on the filter element during the acceptance cycle, the cartridge 66 remains stable.

The filter cartridge 66 is thus detachably attached to the tube plate 68 and suspended, and the open upper end of the filter cartridge 66 is connected to the cover 50 and the tube plate 68.
8 and the support plate 58, as well as the baffle plate 60 and the circular arc plate 62, and communicates with an independent chamber formed in the upper part of the filter housing 42. Since the suction line 14 communicates with the separate chamber generally above the filter cartridge 66, the filter element is configured to filter material particles from the air drawn into the suction line 14 from the material inlet line 16 during the receiving process. It is interposed between the inlet end 16a of the inflow line 16 and the suction line 14. A suction control pulp 9 is provided in the suction line 14.
8 is connected to apply suction to the transfer container 12 during its reception, and a similar control pulp 100 is connected to the material inlet line 16 for opening and closing the material inlet tube. has been done.

In order to perform the receiving in a manner that minimizes the amount of air remaining in the transfer vessel 12 during the receiving cycle, thereby optimizing (maximizing) the material carrying capacity of the transfer vessel 12, the steps illustrated in FIGS. 1 and 4 are shown in FIGS. As shown, the filter housing housing 4
A plurality of substantially rectangular slots (openings) 102 are formed in the second annular wall 46 . The slots 104 facilitate the entry of air into the filter receiving housing 42 such that suction continues to be applied within the transfer container 12 after the level of particulate material reaches the lower edge 46a of the filter receiving housing 42. Also, the filter car) easily flows into the suction line 14 through the IJ jig 66. This allows the transfer container 12 to be filled with particulate material to a level slightly above the lower edge 46a of the filter receiving housing 42 without clogging the filter element.

A filter receiving housing 4 in the air flow path from the material end 16a of the material inlet line 16 to the suction line 14
The slot 102 is not provided on the outer peripheral portion of the second annular wall 46. For this reason, the acceptance size
During this period, the particle-laden air does not directly impinge on the filter element, and the particles riding unseparated in the air conveying medium impinge on the annular wall 46 of the filter-receiving housing 42 and travel downwards into the transfer vessel 12. It is supposed to fall. Annular wall 46 of filter housing 42
Without the slot 102 formed in the filter housing 42, the flow of particulate material into the transfer vessel 12 would substantially cease when the material level reaches the lower edge 46a of the filter housing 42.

A fluid pressure introduction line 18 is connected to the transfer container 12 so that fluid pressure can be applied to the upper and lower ends of the transfer container 12. The introduction line 18 has a downward branch pipe that terminates at a fluid pressure introduction joint 18a at the outlet end, and the introduction joint 18a has an annular flange 30a on the outer periphery of the fluid pressure introduction port 30 at the lower part of the pressure vessel 12. A connected annular 7 flange 106 is provided. The fluid pressure introduction line 18 also includes an upwardly extending branch pipe 18b which, like the suction line 14, communicates with the aforementioned independent chamber within the filter receiving housing 42.
Its upper end is connected to the annular wall 46 of the filter housing 42 . A check valve 108 is connected to the lower branch of the fluid pressure introduction line 18 to prevent contaminated air from entering the fluid pressure introduction line from the transfer vessel 12. The branch pipe 18 extending above the pressure inlet line is provided with a suitable control valve 110 to facilitate control of the amount of air entering the upper end of the filter receiving housing 42.

A main fluid pressure control valve 112 is connected to the upstream side of the branch portion of the fluid pressure introduction line 18 for controlling the fluid pressure to the transfer container 12 on and off. A ventilation member (aeration pad) 114 is installed in the introduction port 30 of the transfer container 12 through which the fluid pressure introduced to the lower end of the transfer container 12 passes, and the fluid pressure introduction line 18 is connected to the top and bottom of the transfer container 12. By connecting both, a certain positive differential pressure is created across the ventilation member 114. The ventilation member 114 has a structure in which a permeation filter plate material 118 is sandwiched between a pair of circular metal porous plates 116a and 116b, and its outer periphery is fixed to the fluid pressure introduction joint 18a and connected to the fluid pressure introduction port 30. It has been passed. Air entering the transfer vessel 12 is then allowed to pass through the vent member 114 while particulate material is prevented from flowing down into the fluid pressure introduction line 18.

By connecting the fluid pressure introduction line 18 to both the upper and lower ends of the transfer container 12 and selectively controlling the air pressure introduced to the upper and lower ends of the transfer container 12, a predetermined positive difference of about 5 to 1 Qpai is generated. Pressure is applied to vent member 114 to create an upward flow of pressurized fluid sufficient to maintain flow of particulate material within transfer vessel 12 and to ensure proper discharge of particulate material by material discharge line 20. The formation of voids (rat holes) in the particulate material, which tends to be prevented, is prevented.

The pipe diameter of the branch pipe 18b of the fluid pressure introduction line 18 is set to a size that limits the flow rate of air to the upper part of the transfer container 12 so that the differential pressure in the ventilation member 114 becomes the maximum safe allowable differential pressure. As a result, the ventilation member 114 is set to have an optimum flow rate, and the ventilation member 114 is not damaged even after long-term use.

Pressure fluid introduced through the lower inlet 30 of the transfer container 12 fluidizes the particulate material within the transfer container 12 and sequentially moves it to the inflow end 20a of the material discharge line 20. Preferably, the inflow end 20a is disposed directly and coaxially above the ventilation member 114.

The pressurized fluid entering the transfer vessel 12 from the inlet joint 18a of the inlet line 18 transports the particulate material into the material discharge line 20, to which is connected an discharge control pulp 122 to control the flow rate of the material discharge line 20. can be controlled. Discharge control valve 122 is maintained in a closed position during pressurization of transfer container 12, which occurs immediately upon receipt of material through suction line 14. A normal pressure sensor 124 that controls opening and closing of the discharge control pulp 122 is connected to a position upstream of the main fluid pressure control valve 112 in the fluid pressure introduction line 18.
24 senses that the pressure within the transfer vessel 12 has reached a predetermined value, the discharge control pulp 122 opens to begin the discharge cycle.

Immediately after the receiving cycle, a large amount of particulate material is present on the inlet end 20a of the material discharge line 20, resulting in the creation of a pressure head that forces the particulate material from the transfer vessel 12 into the material discharge line 20.

As the particulate material in the transfer container 12 gradually decreases, the pressure head decreases and air tends to flow from the vent member 114 directly into the inlet end 2Oa of the material discharge line 20. This results in the creation of voids within the particulate material, referred to as ratholing. Preventing air flow directly into such material discharge line 20, the transfer container 1
In order to prevent the formation of voids in the material inside the ventilation member 114, a circular plate-shaped deflection plate 126 is provided above the ventilation member 114 with fastening means ( (not shown). The deflection plate 126 is coaxially attached to the lower part of the inflow end 20a of the material discharge line 20, and
It has a diameter approximately 1 to 1.25 times the diameter of Oa. The deflection plate 126 is arranged above the ventilation member 114 .
It is preferable that the deflector plate 126 be disposed parallel to the ventilation member 114 such that the distance from the deflection plate 126 is between half the diameter of the deflection plate 126 and the diameter of the deflection plate 126 . The deflection plate 126 increases the air flow path length from the vent member 114 to the inlet end 20a of the material discharge line 20 and serves to force particulate material into the material discharge line 20 during nearly the entire discharge cycle. This maintains the pressure in the material discharge line 20 at a high level, reducing the discharge time and increasing the overall conveying capacity of the transfer device 10.

The filter efficiency of the filter element system 44 is optimally maintained by a dual cleaning mechanism that operates during both the intake cycle and the pressurization and exhaust cycles. That is, a relatively high velocity pulsed jet of air is introduced into the interior of the filter cartridge 66 at predetermined intervals and with a predetermined pulse duration.

As shown in FIGS. 1 to 3, a pair of upright support plates 128a and 128b are attached to the tube plate 68, and are connected to a plurality of air tubes (in the illustrated example) having closed ends. Four air pipes 130a,...

130(L) is supported. Each air pipe 130a.

..., 130d are supported above each row of five filter cartridges 66 such that their respective axes are parallel to the tube plate 68 and on each central axis of the filter cartridges 66 below. . In addition, air pipe 1.30 a,・
..., cylindrical compressed air manifold 13 across 130d
2 is attached, and the manifold 132 connects the connecting hose 13
4 to a suitable source of pressurized, compressed air.

The manifold 132 functions as a secondary or auxiliary air pressure supply pipe, and each of the air pipes 130&, . . . , 130d has a
They are connected via connecting pipes 132&, . . . , 132a and their associated diaphragm control valves 136a, . . . , 136d. The control valve 136a,...
.

136d are individually controlled by intermittent solenoids (not shown) housed within a rectangular solenoid control terminal box 138, which is connected to an electrical control circuit by electrical piping 140.

Each air tube 130a,..., 130cl is provided with a discharge orifice (not shown) coaxially disposed above each lower filter cartridge 66, thereby
Opening the control valves 136a, . As previously mentioned, the upper end of each filter cartridge 66 is provided with a venturi orifice 88 through which the downwardly directed air jet pulses are dispersed outwardly from the axis of the filter cartridge 66. It is now possible to This in turn causes a pulsed air jet to be jetted outwardly through the filter element having a predetermined duration to remove particles adhering to the outer surface of the outer screen 76a.

In addition to cleaning the filter element during the intake cycle with the pulsed air jet as described above, during the "pressurize" and "evacuation" cycles, air flowed through the filter element during the intake cycle into the suction line 14. Pressurized air is flowed through the filter element in a direction opposite to the direction of air flow. As mentioned above, this means that the pneumatic inflow branch pipe 18b is connected to the filter housing 4.
2 and communicates with the chamber of the filter receiving housing 42 above the open top end of the filter element. The combination of backflow of pressurized air during the pressurization and evacuation cycles and flushing with air pulse jets removes substantially all of the particulate material deposited on the outer surface of the filter element during the receiving cycle of the transfer vessel 12. A double cleaning can be performed to remove. In this manner, the fill cycle begins with a clean filter element, thus maximizing particle capture capacity by each filter cartridge 66 and greatly increasing transport efficiency.

Automatic bypass means are provided within the transfer vessel 12 to automatically maintain the discharge pressure at a predetermined design pressure, thereby preventing blockages in the material discharge line 20. That is, a spool-type bypass valve 144 is connected to the fluid pressure introduction line 18 upstream of the main fluid pressure control valve 112, and the bypass valve 144 is connected to the material discharge line 20 (7) downstream of the discharge control valve 122. A bypass conduit 142 is provided between them. Bypass valve 144 is energized by a bypass pressure sensor 146 connected to fluid pressure inlet line 18 to detect the pressure in line 18 and, therefore, in transfer vessel 12.
-Controlled OFF. When the pressure within the transfer vessel 12 detected by the pressure sensor 146 is lower than the optimum value, the bypass valve 144 is closed and all of the air passing through the fluid pressure introduction line 18 is directed into the transfer vessel 12. In this state, it is sent out from the transfer container 12,
The amount of particulate material that is forced into the material discharge line 20 is maximized, increasing the pressure in the material discharge line 20 and increasing the material density of the stream.

When the pressure sensor 146 detects a predetermined pressure set higher than the optimum value for the transfer vessel 12, it signals the bypass valve 146 to open and pass pressurized air into the bypass line 142 to the transfer vessel. 12 is bypassed. In this state, a certain amount of air and particulate material are transferred to the transfer container 12.
air from the fluid pressure inlet line 18 continues to flow out, but is not replaced by air from the fluid pressure inlet line 18, and the pressure within the transfer vessel 12 therefore decreases. Air from the fluid pressure inlet line 18 is maintained at a steady flow to continue the conveying process, but as the pressure within the transfer vessel 12 decreases, the air is removed from the material discharge line 20.
Less material is extruded. When the pressure in the transfer vessel 12, and thus in the material discharge line 20, falls below the set pressure of the bypass valve pressure sensor 146, the pressure sensor 146 causes the bypass valve 144 to close again. In this way, the bypass valve 144 creates a negative feedback system for the discharge process of the transfer vessel 12 and prevents clogging of the material discharge line 20. Therefore, optimum conveyor efficiency is achieved for any size transfer container 12 and associated components.

illustrating a preferred embodiment of a material transfer device according to the invention,
Although described above, various changes and modifications may be made without departing from the invention in a broad sense.

[Brief explanation of drawings]

FIG. 1 is a partially cut-away side view of a material transfer device according to the invention for use with dry fluidized granular materials; FIG. 2 is a partially cut-away side view of the transfer device of FIG. 1 with the cover of the filter housing removed; 6 is a partially enlarged perspective view showing the upper part of the filter housing with the cover removed to expose the filter element and related components; FIG. FIG. 5 is a partial perspective view showing a cross section of the filter cartridge used in the filter element device shown in FIGS. 3 and 4; FIG. 6 is a partial perspective view showing the upper part of the filter cartridge. FIG. 7 is a partial vertical cross-sectional view showing an embodiment of supporting a filter cartridge on a tube plate, and FIG. 7 is a cross-sectional view taken along line 7--7 in FIG. 10... Transfer device, 12... Transfer container, 14... Suction line (suction pipe), 16.
...Material inflow line (material supply pipe), 18...
...Fluid pressure introduction line (pressurized pipe line), 18b...
... Branch pipe (branch flow path), 20 ... Material discharge line (discharge pipe), 32a ... Opening, 42.
...Filter housing, 44...
Filter element device (filter 1d, 50...
... Cover, 66 ... Filter cartridge, 68 ... Tube plate, 72 ... Sleeve,
88...Venturi orifice (fluid pressure distribution device), 102...Slot (opening), 142
... Bypass pipe line, 144 ... Bypass valve, 146 ... Bypass valve pressure sensor (sensor means). ”ko +-6-

Claims (20)

[Claims] (1) A transfer container comprising an upper part and a lower part and forming a chamber therein, a material supply conduit connected to the chamber and facilitating reception of granular material into the chamber, and a part near the upper part of the chamber a discharge conduit connected to the chamber to facilitate evacuation of particulate material from the chamber; and a discharge conduit connected near the top of the chamber to selectively draw particulate material from the supply conduit into the chamber during a receiving cycle. a suction line and a pressurization line that cooperates with the chamber to selectively apply fluid pressure to the chamber and discharge particulate material outwardly through the discharge line; filter means for filtering particulate material from fluid drawn from the chamber by the suction line during a receiving cycle, the filter means being disposed in an upper part of the transfer vessel; a filter receiving housing defining a filter chamber therein; and a plurality of tubular filter elements supported generally parallel and spaced within the filter chamber; a section is in direct communication with the suction conduit and has an outer surface facing the chamber of the transfer container so that fluid drawn into the suction conduit passes through the filter element during a receiving cycle. A material transfer device characterized by: 2. The material transfer device of claim 1, wherein each tubular filter element has a pleated outer filter surface. (3) Material transfer according to claim 1, wherein the plurality of tubular filter elements are supported in an arrangement in which a plurality of parallel rows of filter elements are further arranged in parallel. Device. (4) A material transfer device according to claim 3, wherein a filter element is supported within the filter housing so as to extend downwardly substantially parallel to the longitudinal axis of the transfer container. (5) each tubular filter element has an open top portion that communicates directly with the suction conduit and a closed bottom portion such that fluid passing through the filter element is directed generally radially inwardly through the filter element; 5. The material transfer device according to claim 4, wherein the material flows toward the outside of the upper portion. (6) The pleated filter outer surface is formed at least in part by a pleated vertical ring of filter fabric material, and each filter element is individually attached to a perforated sleeve. A material transfer device according to claim 2. (7) The filter element is supported within the filter housing by a tube plate that is liquid-tightly fixed to the inside of the filter housing, and the filter element has an upper portion that is liquid-tightly fixed to the tube plate. 7. The material transfer device according to claim 6, wherein the material transfer device is attached to. (8) a pressurized conduit directs a fluid having a first fluid pressure from a first fluid pressure source from a hollow interior portion of the filter element outwardly through the filter element during pressurization of the chamber of the transfer container; a second fluid pressure means for directing a fluid pulse jet having a second fluid pressure into an interior portion of the filter element during a receiving cycle; 2. A material transfer device as claimed in claim 1, wherein the pressures are adapted to cooperate to optimize the removal of particles from the outer surface of the filter element. (9) the filter housing defines an independent chamber that communicates with the open top of the filter element;
A branch flow path of the pressurized pipeline is connected to the independent chamber,
Claim 8, characterized in that pressurized fluid is allowed to flow through the filter element during the evacuation cycle in a direction opposite to the direction of fluid flow during the intake cycle. material transfer equipment. (10) the second fluid pressure means includes a fluid pressure dispersion device that causes a fluid pulse jet to flow down into the open top of the filter element while receiving the particulate material in the chamber of the transfer container; A material transfer device according to claim 9. (11) The filter housing has an independent chamber communicating with the inner part of the filter element, and a suction conduit and a pressurizing conduit are connected to the independent chamber within the filter housing, and the suction 9. The material transfer device according to claim 8, wherein the upper cover can be removed from the filter housing without removing the conduit and the pressurized conduit. (12) a transfer container having an upper part and a lower part and forming a chamber therein; and a supply conduit connected to the chamber and facilitating reception of a fluid containing particulate material into the chamber; and a supply conduit connected to the chamber; a discharge conduit for facilitating the discharge of particulate material from the chamber; and a suction connected near the top of the chamber to selectively draw particulate material from the supply conduit into the chamber during the receiving cycle. a pressurizing line connected to the chamber and selectively applying fluid pressure to the transfer vessel to discharge particulate material outwardly through the discharge line; filter means for filtering particulate material from the fluid drawn into the suction line from the chamber during reception of the transfer vessel, the filter means being mounted on the top of the transfer vessel and extending downwardly; a filter-receiving housing facing the interior of the chamber of the transfer container, the filter-receiving housing forming a filter chamber having a lower end within the chamber;
Further, the filter means includes a filter element supported within a filter receiving housing located above a lower end surface of the filter chamber, and the filter receiving housing filters particulate material into the chamber of the transfer container. A material transfer device characterized in that it has receiving means for receiving up to a level slightly higher than said lower end of the filter chamber of the receiving housing. (13) The receiving means has at least one opening formed in the annular wall of the filter receiving housing, through which the pressurized fluid is admitted after the chamber of the transfer container has been filled to the level of the lower end of the filter chamber. 13. The material transfer device according to claim 12, wherein the material transfer device is configured to allow the material to flow into the material. (14) The material transfer device according to claim 13, wherein the receiving means has a plurality of openings formed in a portion of the annular wall above the lower end of the filter chamber. (15) The opening has a substantially rectangular shape, and the opening is not formed around the annular wall in the flow path of the fluid flowing from the supply pipe to the suction pipe during the receiving cycle. A material transfer device according to claim 14, characterized in that: (16) an annular wall of the filter receiving housing passes through an opening in the transfer container and is liquid-tightly fixed to the opening; It is characterized by forming a cylindrical internal chamber having a vertical axis, and having a cover that is detachably attached to the upper part of the annular wall and liquid-tightly closes the open upper part of the cylindrical internal chamber. A material transfer device according to claim 12. (17) An automatic bypass means is connected between the pressurization line and the discharge line to divert fluid flow from the transfer vessel chamber when the chamber reaches a predetermined maximum pressure. A material transfer device according to claim 12, characterized in that: (18) Automatic bypass means operates in association with a bypass line connected in communication between a pressurizing line outside the chamber of the transfer container and a discharge line, and said bypass line to direct the flow. and a sensor means for detecting the pressure in the chamber of the transfer container and opening the bypass valve when the pressure in the chamber reaches a preset maximum pressure. A material transfer device according to claim 17. (19) The material transfer device according to claim 18, wherein the sensor means detects a preset minimum pressure in the chamber of the transfer container and closes the bypass valve. (20) an internal chamber having an inlet and an outlet, and material inlet means communicating with the inlet to receive particulate material from an external source into the internal chamber during a receiving cycle; a suction conduit for sucking particulate material from the material inflow means into the internal chamber;
An inner space communicates with the suction conduit, and an outer surface faces the inner chamber of the transfer container, such that particulate material carried by the gas sucked into the suction conduit collides with the outer surface. A set of substantially hollow filter elements made of
a main fluid pressure source for pressurizing the internal chamber to selectively eject particulate material through the outlet during an evacuation cycle; and at least one secondary fluid pressure source for introducing pressurized gas into the internal space of each filter element. in a transfer container for granular material, etc., comprising a pressure line and (a) periodically discharging pulses of pressurized gas outwardly through each filter element having a short duration during the receiving cycle; b) flowing pressurized gas outwardly from said main fluid pressure source through each of said filter elements during a discharge cycle;
removing particulate matter from the outer surface of the filter element in conjunction with the short duration pulse.