JPH0635292B2 - Method and apparatus for introducing deposits such as powder and granular material into a gas transfer device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for charging deposits such as powder particles into a gas transfer device, and particularly to a movable closing member and a facing member. And a device for closing the one side and the other side of the charging means, one side of which is communicated with a storage means such as a hopper and the other side of which is communicated with a gas transfer device, by means of a closing receiving portion provided as a device. Regarding

[Prior Art] A device of this kind is known, for example, from German Laid-Open Patent Publication No. 3144592. In this German Laid-Open Patent Publication No. 344592, a plurality of devices are sequentially and alternately introduced into a transfer process. Provides a substantially continuous carrier flow. Such systems are known as so-called tandem devices and are technically very expensive. The closure uses a pneumatically-pushed cone, to which an expensive plug is attached, thereby controlling the supply to the lightweight chamber.

This known device therefore requires a plug and additionally has a separate exhaust valve, whose exhaust must be exhausted.
Air is supplied through the supply pipe for closing and transporting the stopper. The delivery air pressure must be equal to the pressure required to close the plug, which makes it impossible to adjust the air pressure appropriately.

In Swiss Patent Publication 340765 it was devised to place at least one supply ring for the air curtain directed at the plug head at a partition angle and generate the air curtain through a number of holes.

In this case, the scavenging gas cannot be used as carrier air, since it is not used and flows out above the plug head after the closing step. The supply tube is mounted on a movable plug head so that it can move considerably. There is no airtight connection with storage tanks.

According to West German Laid-Open Patent Publication No. 3420616, a device that requires only one transfer container and that does not use a lightweight device and that transfers powder particles almost continuously has been proposed. The device is also suitable for a delivery pressure of 6 bar, makes optimum use of the energy supplied for the pneumatic transport, guarantees stability in all operating conditions and operates with little wear.

To this end, at least one supply ring for the air curtain directed towards the closing member is arranged at a partition angle, a valve hinged at one end is supported by a pressure reservoir, the valve being in the closed position in the dosing device. It touches the almost horizontal edge of the inlet. The partition angle is located on the elastic seal ring and is above the bellows. The bellows moves a closure member disposed thereon.

OBJECT AND STRUCTURE OF THE INVENTION In view of the state of the art, the object of the invention is to substantially improve the same type of device and to particularly advantageously form the inlet side of the dosing device.

According to the first aspect of the present invention, a step of forming a charging passage for deposits such as powder and granules communicating with the gas transfer device, a step of disposing a closing member in the charging passage, and the closing member. A first operating position for communicating between the charging passage and the gas transfer device, and for connecting the charging passage and a supply source of carrier gas, and blocking the charging path and the gas transfer passage, and A step of alternately operating between a second operation position that shuts off the supply passage and the supply source of the carrier gas, and the closing member is moved to the first operation position and the second operation position according to the stress of the driving gas. Powder comprising: a step of providing driving means for driving; and a step of exhausting the driving gas to the outside of the deposit transport path of the charging passage when reducing the pressure of the driving gas. Putting deposits such as particles into the gas transfer device The law is provided.

On the other hand, according to the second configuration of the present invention, a closing member that is movable in the axial direction is provided, and the closing member is moved to the charging passage opening position and the charging passage closing position for deposits such as powdery particles or the like. The supply of the deposits and the supply of the carrier air are selectively cut off, and at least one of the closing members extending in the carrying direction and arranged outside the flow passage of the deposits such as powder and granules. A carrying step including a step of providing a hollow body having an opening and supplying the deposit to the charging passage at least through the opening of the hollow body, and a charging step of charging the deposit in the charging passage to a gas transfer device There is provided a device for introducing a deposit such as a powder or granular material into a gas transfer device, which is provided with valve means that opens and closes accordingly.

The problem is that the closing member has at least one opening arranged outside the flow path of the deposit such as powder or granules, and the base of the hollow body passing in the conveying direction substantially in the axial direction before the charging device. This is solved by the fact that the cross section of the opening is in the track of the plug that can move between it and the opening depending on the transport process.

Therefore, the plug body is received at the free end of the rod and supports the head having the hollow body opening formed in the shape of a pipe in the closed position, and the inside of the hollow body forms a part of the charging device and is sealed to the outside. .

By this method, it becomes possible to properly exhaust the charging device by the remaining deposits at the supply port at the end of the carrying process.

The pipe is arranged in the tube of the dosing device. This tube has at least one exhaust hole on the upper side and a supply tube for the granular material on the side.

According to another feature of the invention, the conical head is arranged facing the dosing device and away from the closing member, the conical head being fixed to the rod, the distance from the conical head to the tip being greater than the free length inside the pipe. , There is a sufficient gap between the closing member and the conical head, which is connected to the annular space between the pipe and the rod. This annular space leads to at least one opening in the pipe head.

According to the invention, the rod passes through the conical head and the free end is received unfixed in the guide pipe. The guide pipe allows the rod to move upward, while preventing the rod from deflecting.

The conical head is used to raise and lower the rod (and plug). It is combined with a bellows as is known from West German patent publication 3420616 and is lifted by air when hitting the bellows. At the same time, the axial rod, the pipe head supported by it and the closing member are guided upwards. When the bellows is evacuated, it leaves the plug pipe head and opens its vent. As detailed below,
Thereby the closing member and the pipe are still held in the upper position by pneumatic pressure, but the conical head and the rod already start to descend.

The plug is formed as a commercially available bush of slightly elastic material and is supported on the upper end of the rod, ensuring a tight closure of the dosing device in the opening of the pipe head.

The rods are axially divided into two parts, connected to each other by a conical head and screwed to the conical head.

In order to reliably exhaust the charging device by the pipe head, the pipe head is provided above the powder and granular material supply pipe and below the exhaust hole of the pipe body in the pipe body.

In order to bypass the granules sent from the side supply pipe,
In the tube body composed of the tube wall, a substantially vertical baffle plate is arranged on the side opposite to the supply port apart from the pipe.

The arrangement of the sealing ring known per se, which forms the seat of the closing member, is also important. The tube is surrounded by a tube wall in contact with the seal ring at the inflow section which is conically narrowed in the conveying direction, and the seal ring is provided with a ring groove for guiding air. The air passage on the opposite side of the ring groove and the seal ring is connected by a penetrating portion provided in the seal ring. Radial ventilation passages connect to the lower ring groove,
The inlet is directed towards the closure member. Due to this method, the areas of the ventilation ducts or through holes are effectively isolated from the carrier flow. In particular, the inlet of the ventilation passage in the transport direction is offset outward in a shoulder shape.

The above features can in principle be used for all devices of the same type. However, West German Published Patent Publication No. 34
It is particularly advantageous for use with the valve for closing the dosing device outlet described in detail in 20616.

The above-described valve is used in the transportation method, which will be outlined below, for ease of explanation. When filling the dosing device instead of this valve, the dosing device is closed at the bottom by a valve that is pressed by a spring, and the closing member is separated from the partition angle. The opening of the pipe head is closed by the rod plug.

After the adjustable filling time has elapsed or after a signal has been sent from the filling level gauge, the air expelled through the ring groove is sent to the closing member, at the same time the conical head is lifted from the bellows. The conical head and the rod then lift the pipe head, which also raises the closing member and makes close contact with the partition angle. The air further flowing in from the radial ventilation passage generates a delivery pressure corresponding to the pressure of the carrier pipe in the pressure chamber of the hopper. As a result, the inflow valve is opened and the granular material flows into the carrier pipe.

The valve can be closed again when released from the granules, ie when the filling level of the granules falls below the valve trajectory.
When the lower inlet of the pressure chamber is closed again by the valve, the air supply by the various ventilation channels is interrupted, the bellows is evacuated and the control head is lowered.

In this state, the closing member is held at the partition angle by the air pressure in the pressure chamber. When the overpressure is removed, the closure member falls under its own weight and the pipe head sits on the rod plug again. At this time, the gap between the inner surface of the closing member and the outer surface of the conical head is reduced, but a constant gap is maintained.

[Embodiment] The following will describe an embodiment of the present invention with reference to the drawings.

A device 10 according to a preferred embodiment of the present invention is shown divided into FIGS. 1 and 2. The device 10 is composed of an upper tube body 11 and an end plate 12 formed integrally with the upper tube body 11 in order to send out the granular material S. Further, a flange pipe 13 is integrally formed with the pipe body 11 at a predetermined angle. The forming angle w of this flange tube 13 is set to about 45 degrees in the preferred embodiment.

In the illustrated embodiment, the diameter d of the tubular body 11 is
The height is about 240 mm and the height h is about 500 mm.

A ring flange portion 15 is integrally formed on the lower end of the tube body 11. This ring flange 15 has an opening 16 at the lower end.
Is formed, and the diameter e of the opening 16 is set to 150 mm in the preferred embodiment. As shown in the figure, the opening 16 has an inflow portion 17 formed in a funnel shape, and the inflow portion 17 connects the opening 16 and the general portion of the tube body 11 defined by the tube wall 14. I am in touch.

The ring flange 15 projects in the radial direction of the pipe body 11. Below the ring flange 15, the hopper 20
The tubular portion 19 is coaxially connected to the upper tube and the common axis A. The hopper 20 has a funnel-shaped hopper portion 21 below the tubular portion 19. A mounting flange 22 is fixedly attached to the lower end of the hopper portion 21, and a tubular sleeve 23 is attached to the hopper 20 via the mounting flange.

A valve body 25 is provided at the lower end of the sleeve 23 to face it. The valve body 25 is hinged at its base end 26 so as to be rotatable. The valve body 25 is constantly moved toward the lower end of the sleeve 23 by the elastic spring member 27.
It is biased in the y direction in the figure. In addition, the free end 28 of the valve body 25
Is located near the proximity switch 29 at the closed position of the valve body, and the proximity switch detects the free end by electromagnetic induction, electrostatic induction, or the like, or optically. The proximity switch 29 functions as an exhaust control switch for controlling the exhaust process.

The sleeve 23 is inserted in the inner space of the discharge pipe 30 bolted to the mounting flange 22. The hinge portion 26 of the valve body 25 and the base portion of the spring member 27 are fixed to the peripheral wall of the discharge pipe.

The valve body 25 is normally in contact with the lower end of the sleeve 23 and closed by the spring member 27. The spring force of the spring member 27 is set to be relatively weak, and when the pressure of the hopper portion 21 exceeds the pressure in the discharge pipe 30, the valve body 25 rotates against the spring force,
The lower end of the sleeve 23 is opened.

A slightly elastic seal ring 35 is interposed between the ring flange 15 and the support plate 18 of the tubular portion 19. The inner peripheral edge portion 36 of the seal ring 35 abuts on a pipe head 56, which will be described later, as shown in FIG. Also,
An annular elastic seal member 38 having a carrier gas passage 39 is attached to the lower surface of the seal ring 35. The carrier gas passage 39 of the seal member 38 is formed in an intermediate plate 41 inserted between the lower ring flange 15 of the tube body 11 and the support plate 18 of the upper end of the tubular portion 19 of the hopper 20, and has an open upper annular shape. It communicates with the groove 40.

Below the intermediate plate 41, the support rod 43 for the base plate 44 is fixed such that the distance from the hopper portion 21 is equal to the width of the annular opening 16.

A bed plate 45 is fixed on a base plate 44, a lower edge of a bellows 47 is fixed to the bed plate 45 by a clamp ring 46, and an upper edge is fixed to a conical head 48 (FIG. 4). In the conical head 48, two rods 50
The part is screwed to 49. Lower rod part 50
The lower end of t is inserted in the guide pipe 51 so as to be movable in the axial direction. The lower end of the guide pipe 51 is fixed to the base plate 44. The bellows 4 is provided near the lower end mounting portion of the guide pipe 51 of the base plate 44.
A connection bush 52 for an air hose 53 for supplying and exhausting the pressure chamber 54 of No. 7 is provided.

The upper rod portion 50h of the rod 50 is connected to the hat-shaped pipe head 56 of the shaft pipe 57. Pipe 57
The lower part of the conical head 4 is flared like a downward funnel.
8 receiving portions 58 are formed. This conical head receiving portion 58
Constitutes the closing member of the present invention.

In the position shown in FIGS. 1 and 4, the conical head receiving portion 5
The outer peripheral surface 58 a of the seal ring 8 is in close contact with the inner peripheral edge portion 36 of the seal ring 35, and the lower end edge 58 b thereof is substantially in contact with the lower edge of the intermediate plate 41.

The pipe head 56 of the axial pipe 57 is formed by a dome 59 with a substantially L-shaped cross section with a central opening 60. The dome 59 is screwed to the flange 62 of the shaft pipe 57 through the seal ring 61 and sits on the conical tip 64 of the extension 65 of the U-section of the shaft rod 50. This extension 65 is made of a slightly elastic material and is pressed against the rod end 66 until it hits a stopper 67. In FIG. 3, a nut 68 and an elastic guide ring 69 are shown below the stopper 67.

According to FIG. 5, in the filling step, the granular material S is fed into the pipe body 11 through the side flange pipe 13 and reaches the hopper 20 from there. At this time, the conical head receiving portion 58 is separated from the inner peripheral edge portion 36 of the seal ring 35, and the bellows 47 is in an exhausted state. During the filling process, the valve element 25 is pressed against the sleeve 23 in the discharge pipe 30 by the air pressure in the spring member 27 and the conveying space 31.

During the filling process, the displaced air is discharged through the central ventilation hole 70 of the end plate 12 to the tube body 11 (arrow 2).

When the filling time that can be adjusted with a time relay or the like elapses, the hopper container 20 is filled and air flows into the bellows 47. According to FIG. 6, at the same time, the carrier air conveys the seal member 38.
Is conveyed to the conical head receiving portion 58 through the carrier gas passage 39. The carrier air is the ring groove 40 and the seal ring 3.
5 through the hole 42 and another ring groove 40a in the ring flange 15 whose cross section is shown in FIG.
Reach 9 Due to the pressure of the carrier air, the conical head receiving portion 5
8 is lifted from a bellows or a bellows cylinder 47, and seals the pressure chamber 60 of the hopper 20 to the pipe body 11.

Further, the inflowing air flows into the hopper 20 to increase the pressure in the hopper. The pressure in the hopper 20 is the transfer tube 3
When the pressure becomes equal to that in 1, the valve body 25, which is a granular material, is opened against the spring force of the spring member 27.

The powdered fluid S1 that has left the hopper 20 is fed into the carrier pipe 31. Part of the granular material S above the conical head receiving portion 58 contacts the vertical wall 72 parallel to the axial pipe 57 in the tubular body 11.

When the filling level of the granular material falls below the valve body 25, the valve body 25
Is pressed against the sleeve 23 again by the spring member 27. Air flowing from the hopper 20 cleans the valve surface. When the valve body 25 actuates the switch 29, the air supply is interrupted by a valve (not shown) controlled by the switch 29, the bellows 47 is evacuated and the conical head 4
8 descends. The conical head receiving portion 58 is held by the air pressure remaining in the hopper 20 until the overpressure disappears in the seal ring or the seal member 38.

FIG. 9 shows the air path.

Ascending from the pressure chamber 80 of the hopper 20 into the void 74 defined by the conical head 48 and the conical head receiver 58 (when maintained at all times). When the bellows 54 exhausts, the conical head 48 descends, with which the rod 50 and rod extension 65 descend. At this time, the wire 65 is separated from the central opening 60 of the dome 59, and as a result, air flows out through the ventilation holes 70 of the end plate 12.

When the evacuation process is completed, the conical head receiving part 58 falls by its own weight, and the plug 65 reaches the central opening 60 again and closes it. As a result, the filling process is started again.

[Effects] As described above, according to the preferred embodiment of the present invention, the deposits such as powder particles can be efficiently and continuously charged into the gas transfer device.

[Brief description of drawings]

Fig. 1 Partial longitudinal section of the device according to the invention, Fig. 2 Axial supplementary part of the device according to Fig. 1, Fig. 3 Partial enlarged view of Fig. 1, Fig. 4 Partial enlarged view of Fig. 5, FIG. 9 to FIG. 9 Sectional views of the apparatus in various operating states. 10 ... Inserting device, 11 ... Tube, 12 ... End plate, 13
…… Supply pipe, 14 …… Pipe wall, 15 …… Flange ring,
16 ... Annular opening, 17 ... Inflow part, 18 ... Support plate, 19 ... Container wall, 20 ... Hopper container, 21
...... Discharging hopper, 22 …… Exit sleeve, 23 ……
... Edge plate, 25 ... Valve body, 27 ... Closing spring, 29 ... Switch, 30 ... Discharge pipe, 31 ... Conveying pipe, 35 ... Seal ring, 36 ... Inner peripheral portion, 38 ... Seal Member, 39 ... Carrier gas passage, 40, 40a ... Ring groove, 41 ... Intermediate plate, 43 ... Support rod, 44
...... Base plate, 45 ...... Bed plate, 46 ...
... Clamp ring, 47 ... Bellows, 48 ... Conical head, 50 ... Rod, 50h, 50t ... Rod part, 51 ... Guide pipe, 52 ... Connection bush, 53
...... Air hose, 54 ...... internal space, 56 ...... pipe head, 57 ...... pipe, 57 ...... hollow body, 58 ...... close member, 58a ...... close member outer surface, 58b ...... close member lower edge, 59 ... … Dome, 60… Central opening, 61… Seal ring, 62… Flange, 64… Conical tip, 65… Plug, 66… Rod end, 67… Stopper, 68… Nut, 69 ... Guide ring, 70
…… Ventilation holes, 72 …… Partition walls, 74 …… Clearances, 80 ……
Inserting device, A ... Vertical axis of device, d, e ... Diameter, h ... Height, S ... Granule, x ... Conveying direction.

Claims (2)

[Claims] 1. A step of forming a charging passage for deposits such as powder and granules communicating with a gas transfer device, a step of disposing a valve element in the charging passage, and a step of connecting the valve element with the charging passage. A first operating position that communicates between the gas transport devices and communicates between the charging passage and the supply source of the carrier gas, and shuts off the charging passage and the gas transport passage, and Providing a step of alternately operating between second operation positions that cut off between the supply sources, and a drive means that drives the valve element to the first operation position and the second operation position according to the pressure of the drive gas. And a step of exhausting the driving gas to the outside of the deposit conveying path of the charging passage when reducing the pressure of the driving gas. How to put into the gas carrier. 2. A closing member which is movable in the axial direction is provided, and the closing member is operated to an opening position and an closing position for a deposit passage for deposits such as powder or granular material so as to supply the deposit and convey air. In addition to selectively shutting off the supply, the closing member is provided with a hollow body extending in the conveying direction and having at least one opening disposed outside the flow path for deposits such as powder particles. A valve means for opening and closing the opening of the hollow body in accordance with a transfer process including a supply process for supplying deposits to at least a charging passage and a charging process for charging the deposits in the charging passage to a gas transfer device. A device for depositing a deposit such as powder or granular material into a gas transfer device, which is characterized by being provided.