JPS6371022A - Suction type pneumatic transporting method and device thereof - Google Patents

Abstract

PURPOSE:To aim at curtailment in constituent parts, by opening or closing an on-off valve at the material outlet of a destination hopper, with discharge air out of a suction air source, and sweeping off dust sticking to the filter installed inside the destination hopper. CONSTITUTION:This device is provided with a destination hopper 1 installing a filter 2, which separates granules to be conveyed from transport air, a transport pipe 5 connected to a material inlet 3 of this hopper 1, and a suction- discharge pipe 6 connecting a base end to an upper part of the filter 2, and it conveys materials in a material storage part 8 to the hopper 1 by suction air force of a suction air source 7. The filter 2 is attached to an inner surface of a hopper cover body, and at the upper part, there is provided with a scraping member 12 being attached to a tip of a piston rod for an air cylinder 17 and connected to a scraping air intake pipe 13, with which dust sticking to the filter 2 is scraped off.

Description

Detailed Description of the Invention (Industrial Application Field) This invention is a method for transporting powder and granular materials such as synthetic resin materials, pharmaceutical materials, food materials, etc. from a material storage section to a destination hopper by suction air force. The present invention relates to a method and device for the same, and more specifically, to improvements in opening and closing the material outlet of a destination hopper and in brushing off dust adhering to a filter.

(Prior Art) Conventionally, this type of suction type pneumatic transportation method and device has (a) a suction air source, a destination hopper, a transportation pipe, and an intake pipe, and a A double-acting air cylinder is provided in which a piston rod moves in and out using air pressure from a dedicated air source that is provided separately from the suction air source, and the material is moved in and out of the hopper at the destination by the movement of an on-off valve attached to the tip of this air cylinder. There are known devices that open and close the exit.

Furthermore, it is known that dust adhering to a filter provided in a hopper at a destination (01) is removed by air from a dedicated air source separate from the suction air source.

(Problems to be Solved by the Invention) However, according to the above conventional example (a), a dedicated air source separate from the suction air source is required as a driving source for moving the piston rod of the air cylinder in and out. In addition, there were other problems such as the need for special piping from the air source to the air supply port of the air cylinder.

Further, in the case of the conventional example (b), as in the case of the above-mentioned case (a), an air source dedicated to removing dust from the filter is required, and the piping thereof is also complicated.

The present invention attempts to solve these problems by effectively utilizing the discharge air of the suction air source.

(Means for Solving the Problems) As a means for achieving the above object, the suction type pneumatic transportation method according to the second invention is such that the material is transported to the destination hopper by the suction air force of the suction air source. In the suction type pneumatic transportation method, the air discharged from the suction air source is used to open and close the on-off valve at the material outlet of the destination hopper, and/or to brush off dust attached to a filter installed in the destination hopper. It is characterized by the following.

Further, the suction type pneumatic transportation device according to the second invention is for carrying out the method of the second invention, and includes a destination hopper having an on-off valve for opening and closing a material outlet, and a destination hopper having an on-off valve for opening and closing a material outlet. a transport pipe and an intake/exhaust pipe connected to the air intake/exhaust pipe, and a suction air source connected to the tip of the intake/exhaust pipe, an intake side switching valve is connected to the intake side of the suction air source, and a discharge side switching valve is connected to the discharge port side of the suction air source. At the same time, the tip of the discharge pipe is connected to the intake/exhaust pipe, and intake/exhaust switching valves are provided at appropriate locations on the intake/exhaust pipe, and the intake/exhaust switching valves are connected to the destination hopper. An air introduction pipe for the air cylinder that communicates with the air conduction path of the air cylinder that drives the on-off valve, and/or an air introduction pipe for brushing off dust adhering to the filter installed in the destination hopper. It is characterized by being connected.

(Function) According to this invention, after the material outlet is closed by the opening/closing valve by the air pressure of the discharge air on the discharge side of the suction air source, the material in the material storage section is transported by the suction air force through the suction and exhaust pipe. Transport to the destination hopper.

After the destination hopper is filled with a predetermined amount of material, the discharge air from the suction air source opens the material outlet of the destination hopper with an on-off valve, and the material in the destination hopper is discharged to the destination.

According to a second invention that implements the method of the invention (above),
Close the intake side switching valve, open the small discharge pipe of the discharge side switching valve, open the intake/exhaust switching valve only for the air introduction pipe for the air cylinder, and open/close the piston loft operation switching valve. When the valve is switched to close and the suction air source is started, the discharge air from the suction air source is sent into the immersion air passage of the air cylinder via the discharge pipe, intake/exhaust pipe, and air cylinder air introduction pipe. A valve closes the material outlet of the destination hopper.

Therefore, the intake/exhaust switching valve is switched to open only the intake/exhaust pipe line, the intake side cutoff valve is switched to open, and the discharge side switching valve is closed to the discharge pipe line, and the discharge air is released to the atmosphere. By doing so, the suction air from the suction air source is discharged to the outside of the system through the intake/exhaust pipe and the suction air source, and at the same time, this suction air suction transports the material in the material storage section to the destination hopper via the transport pipe. Ru. To maintain the closed state of the on-off valve during suction transportation of this material, the air in the destination hopper is sucked by the suction air force of the suction air source, and the backflow of air is prevented by the check valve described later. This is done by

When the destination hopper is filled with a predetermined amount of material, the intake/exhaust switching valve is switched to open to the air introduction pipe for the air cylinder, the intake side switching valve is closed, the intake/exhaust switching valve is opened, and the intake/exhaust switching valve is switched to open the intake/exhaust switching valve. The source discharge air is fed into the air cylinder's protruding air conduit through the discharge pipe, intake/exhaust pipe, and air cylinder air introduction pipe, and the on-off valve is opened from the material outlet.
Discharge the material in the destination hopper to the outside of the system.

Also, for example, when discharging the material in the destination hopper (
(but not limited to this), by switching the intake/exhaust switching valve, the discharged air from the suction air source is also sent to the blow-off air introduction pipe (or only to this), and the air adheres to the filter installed in the destination hopper. Brush off any dust.

(Example) An example of the present invention will be described below based on FIGS. 1 to 5.

(S) is a suction type pneumatic transportation device, which includes a destination hopper (1) equipped with a filter (2) that separates the granular material (material) to be transported from the transportation air, and a destination hopper. Transport pipe (5) connected to material inlet (3) of +1)
), and an intake/exhaust pipe (6) having a tip connected to a suction air source (7) such as a vacuum pump, and a base end connected to a position above the filter (2) of the destination pumper (1), The material in the material storage section (8) such as a tank or silo is sucked and transported to the destination hopper (1) via the transport pipe (5) by the suction air force of the suction air source (7). It is.

The destination hopper (1) has a cylindrical hopper body (1).
The inner lower part of the hopper body (1a), which consists of the hopper body (1a) and the hopper lid body (1b), forms a funnel-shaped material outlet (4). Further, a cylinder fixing member 01 is horizontally suspended above the hopper body (1a), and this cylinder fixing member (to) is inserted into the insertion hole ( 21a) to suspend the air cylinder. An on-off valve (9) is attached to the tip of the Piston Loft Co., Ltd. of the air cylinder Qυ, and the on-off valve (9) is operated via the air cylinder Qυ by the discharge air force of the suction air source (7), which will be described later. 9) to open and close with respect to the material outlet (4).

Ol is the valve seat.

Inside the cylinder tube t2 of the air cylinder Qυ, as shown in FIG. An immersion air guide path (c) for immersing the air is formed in the longitudinal direction.

On the other hand, the cylinder fixing member Q@ has a protruding air passage r that communicates with the protruding air guide passage (2) of the air cylinder Qυ.
At 2 o'clock, an immersed air passage (■) is formed which communicates with the immersed air conduit (c), and these protruding air passages 0~ and immersed air passage - are connected to the air cylinder air introduction pipe 1) ffi. ing.

The hopper lid body (1b) is fixed to the hopper body (la) with a hook αυ, etc., and the above-mentioned filter (2) is provided inside the bottom plate, and above the filter (2). A brush-off member @ is provided, and this sweep-off member (2) is attached to the air cylinder θ piston rods 0'
The air introduction hole (not shown) of the air cylinder a is connected to the air introduction pipe α1 for brushing off.

As shown in FIG. 5, annular air grooves (26a) and (27a) are formed at the tips of the protruding air passage ctl and the recessed air passage of the cylinder fixing member (to), from which the air is cylinder? 20 protruding air passages)
Alternatively, the discharge air may be supplied to the immersed air conduit (c).

Adjacent to these air grooves (26a) and (27a) are
Fit the ring ell... (to) and open the air groove (2).
6a) and (27a) are prevented from leaking.

Also, the air cylinder cylinder tube (to)
At the tip of the rod cover (to), a cover (to) with a length longer than the length of the protruding and retracting stroke of the piston rod is further provided, and a gasket (to) is installed at a position above this cover (to).
2), thereby preventing the material attached to the tip of the piston rod (2) from abrading or damaging the gasket (2).

A discharge pipe a1 is connected to the discharge port (7a) of the suction air source (7) via a discharge side switching valve αV, and the discharge pipe Q! Connect the tip of 9 to the intake/exhaust pipe (6).

In addition, an appropriate location of the intake and exhaust pipe (6) (downstream side in the example)
Attach the intake side switching valve scale υ to the intake and exhaust switching valve @D.
As mentioned above, there is a protruding air conduit (c) for the air cylinder that drives the on-off valve (9) of the destination hopper (1), and an air introduction pipe 14I for the air cylinder that communicates with the immersed air conduit device. and a dust removal air introduction pipe 01 for brushing off dust adhering to a filter (2) installed in a destination hopper (1).

Furthermore, the air cylinder air introduction pipe II is configured to selectively direct the discharge air introduced from the discharge pipe 09 through the intake and exhaust pipe (6) into either the protruding air guide path Q~ or the submerged air guide path (c). A piston rod operation switching valve is provided to supply air to the double-acting air cylinder Q.
The opening/closing valve (9) is closed or opened with respect to the material outlet (4) by moving the piston rod υ up or down. At this time, the discharge air supplied to the protruding air conduit (c) or submerged air conduit (c) will be transferred to the same protruding air conduit that was supplied by the time of the next operation of Piston Loft Co., Ltd. It is designed so that it flows back into the passageway or the immersion air passageway (c) and is discharged out of the system. In that case, when the on-off valve (9) is closed, the air inlet pipe for the air cylinder should be closed so that the on-off valve (9) with the material outlet (4) closed will not be opened inadvertently due to the backflow of air. A check valve (■) is provided on the upstream side of the piston rod operation switching valve @2.

Note that (+[9) is an intake side switching valve installed on the upstream side of the intake and exhaust pipe (6), which closes the suction path in the vjL exhaust pipe (6) and allows only the discharge air from the suction air source (7) to flow. When used, the intake/exhaust pipe (6) is switched to a closed circuit, and the discharged air is supplied from the discharge pipe QSI to the above-mentioned lines via the intake/exhaust pipe (6).

A filter may be provided downstream of the intake side switching valve (19) of the intake/exhaust pipe (6) to protect the suction air source (7) and the intake side switching valve Oe.

By making the suction air source (7) a diaphragm valve driven type, the discharge air is not contaminated with oil, and troubles in the suction air source (7) due to dust in the suction transport line can be prevented.

Pressure detector 1) in the right place of the intake and exhaust pipe (6)! 1 is attached to detect the air pressure in the intake and exhaust pipe (6), and a pressure regulating valve (46) is attached to an appropriate position of the transport pipe (5), and this pressure regulating valve (46) is connected via piping. It is connected to the pressure detector 6!9 and the pressure regulating valve (46) is operated based on the pressure value detected by the pressure detector (45)! ! It is also possible to increase the mixing ratio of the material to the air by controlling the air pressure sucked from the transport pipe (5).

The air discharged from the suction air source (7) is used to drive the air cylinder Ql) and to remove dust from the filter (2), or both.
As already stated.

Air cylinder c! 1) Is it publicly known? It is also possible to use a single-acting cylinder. However, according to this cylinder, tubes are connected to the two air inlets for the piston rod to enter the piston rod, and the tubes are connected to the cylinder in the hopper at the destination. Because of this arrangement, the tubes get dirty or adhered to the books transported into the destination hopper, which is troublesome as they have to be constantly cleaned (R), and if the cleaning is insufficient. had drawbacks such as quality deterioration depending on the physical properties of the material.

On the other hand, according to the configuration of the cylinder fixing member Q1 and the air cylinder (21) of the present invention, such drawbacks can be eliminated.

The structure of the cylinder fixing member is not limited to the structure shown in the drawings, and its protruding air passageway, submerged air passageway (
Inc.) is not limited to the configuration in which the discharge air is supplied from the left and right positions on the diameter line, but may be formed in any manner such as forming it only on one side.

Discharge side switching valve α ship, intake side switching valve 01, intake/exhaust switching valve 1
) Various valves such as 1) can be manually operated, but they can also be operated automatically by electrical means, or the opening and closing operations of the answer can be linked with a timer, etc., as appropriate. Design can be changed.

If a certain amount or more of dust adheres to the filter (2), an alarm means (not shown) may be used to notify the filter (2). By sending a pulse signal to the intake/exhaust switching valve @U,
It is also possible to operate the filter (2) in a pulsed manner.

In special cases, such as when the powder (material) easily combines with oxygen in the air, it is difficult to use air as the transport gas, so other appropriate gases such as argon or nitrogen may be used. do. Therefore, in the present invention, the air to be transported should be understood in a broad sense, including gases other than air.

(47) is the receiving part of a hopper or synthetic resin molding machine, (4
8) is the level meter of the destination hopper (1), and (49) is the level meter of the receiving part (47).

(Effects of the Invention) This invention has the configuration as described above, and the second invention is such that the material is transported to the destination hopper (1) by the suction air force of the suction air a (7). In the suction type pneumatic transportation method, the on-off valve (9) of the material outlet (4) of the destination hopper (1) is opened and closed by the discharge air of the suction air source (7), and/or the on-off valve (9) of the material outlet (4) of the destination hopper (1) is 1) is characterized in that the dust adhering to the filter (2) installed in the filter (2) is brushed off, and the second invention for carrying out the method is to A transport pipe (5) and an intake/exhaust pipe (6) connected to the transport destination hopper (1), and a suction air pipe (6) connected to the tip of the intake/exhaust pipe (6). An intake side switching valve QI9 is connected to the intake side of the suction air source (7), and a discharge pipe 09 is connected to the discharge port (7a) side via a discharge side switching valve Q4).
At the same time, the tip of the discharge pipe α is connected to the intake/exhaust pipe (6), and an intake/exhaust switching valve @U is provided at an appropriate location of the intake/exhaust pipe (6), and this intake/exhaust switching valve fi
l) includes air conduction passages 4, (15
) an air introduction pipe for an air cylinder (40) communicating with the air cylinder;
or/and is characterized in that it is connected to a dust removal air introduction pipe (2) for brushing off dust adhering to a filter (2) installed in the destination hopper (1). , has the following effects.

(1) One suction air source (7) not only suctions and transports the material by its suction air force through the suction and exhaust pipe (6), but also uses the discharge air of the suction air source (7) to 21) of the piston rod (support) or/and the filter (2) in the destination hopper tll.
), there is no need to use an air source dedicated to an air cylinder or an air source dedicated to dust removal as in the past, which not only saves on component parts, but also The structure is simplified.

(2) Alternatively, the various lines described above can be configured by simply connecting the air cylinder air introduction pipe, the air introduction pipe α■ for blowing off, and the discharge pipe α9 to one intake/exhaust pipe (6). Therefore, it has the advantage of being easy to assemble with a small number of piping, without requiring a large number of piping or complicated assembly work as in the past.

(3) The suction transport process, the opening/closing process of the on-off valve (9) driven by the air cylinder, and the dust removal drive process of the filter (2) are performed using the suction/exhaust switching valve, the discharge side switching valve Oa, and the intake/exhaust switching valve 0υ( Piston rod operation switching valve @
Since all that is required is the switching operation in 3), the selection can be made extremely easily.

(4) If the configuration is as described in claim (3), the destination hopper (1)
Since there is no need to install a tube to connect the air inlet of the air cylinder like in the past, it is possible to prevent contamination of the material in the event that the tube is damaged by material, etc., and also to prevent the cylinder from being fixed. Since the member is provided above the destination hopper (1), it does not get in the way when the material is being supplied, and has the advantage that it does not deteriorate depending on the material.

[BRIEF DESCRIPTION OF THE DRAWINGS] Each figure shows an embodiment of the present invention, and FIG. 1 is an overall schematic explanatory diagram, FIG. 2 is a vertical cross-sectional view of the destination hopper, and FIG. FIG. 4 is a plan view, FIG. 4 is a partial vertical sectional view of the air cylinder, and FIG. 5 is a side view showing half of the cylinder fixing member in cross section. (1) Destination hopper, (2) Filter, (5) Transport pipe, (6) Intake and exhaust pipe, (7)
... Suction air source, (9)... Opening/closing valve, ■... Brushing off member, a3... Air introduction pipe for brushing off, α0.
...Discharge side switching valve, ao...Intake side switching valve, 01)
・・Cylinder fixing member, Qυ・Air cylinder,
Equipment: piston rod, ■: protruding air conduit, (
c)...Immersed air conduit passage, ■...Protruding air passage, Fin...Immersed air passage, ■...Air introduction pipe for air cylinder, @υ...Intake/exhaust switching valve, Between...・Piston rod operation switching valve, @j...check valve. Figure 1 Figure 2 1) F4 figure procedural amendment June 26, 1988 Commissioner of the Patent Office Black 1) Ming A Tono 1, case display 1986 patent application No. 216257 2, name of invention suction type Relationship between pneumatic transportation method and its device 3 and the case of the person making the amendment Patent applicant Location 6-5-26 Tanimachi, Minami-ku, Osaka Name Matsui Seisakusho Co., Ltd. Representative Osamu Matsui 46 Agent 5 Date of amendment order (Date of shipment) Voluntary action 7. Contents of the amendment (1) In the 3rd page, line 1) of the statement, the words "food materials" will be amended to read "processed food materials." (2) On page 10, line 5 of the same page, the phrase “(2) is discharged” has been replaced with “
(To) Move the flange (22a) up and down to make the piston rod (2) protrude. (3) On page 12, line 17 of the same page, there is a comment that says ``I moved the vessel.'' ``@
is corrected as ``upward movement due to the above-mentioned discharge air force to the flange (22a)''. (4) On page 13, line 15, ``On the downstream side, Fico'' has been corrected to ``On the downstream side, as shown by the chain line in Figure 1, Fico.'' (5) On page 15, line 5, after "It will be resolved.""In addition, the air cylinder (21) is of course not limited to the multi-acting type as mentioned above, but may also be of the single-acting type. You can change the superposition design.'' (6) Correct Figure 2 as shown in the attached sheet. (7) Correct Figure 4 as shown in the attached sheet. (8) Correct Figure 5 as shown in the attached sheet. Above Figure 2 Figure 4

Claims (3)

[Claims] (1) In a suction type pneumatic transportation method in which the material is transported to the destination hopper (1) by the suction air force of the suction air source (7), the material is transported to the destination hopper (1) by the air discharged from the suction air source (7). Open/close the on-off valve (9) of the material outlet (4) of the hopper (1), or/and
) A suction type pneumatic transportation method characterized in that the dust adhering to the filter (2) inside the filter (2) is brushed off. (2) A destination hopper (1) having an on-off valve (9) that opens and closes the material outlet (4), a transport pipe (5) and an intake/exhaust pipe (6) connected to this destination hopper (1), and an intake/exhaust pipe (6). and a suction air source (7) connected to the tip of the trachea (6),
An intake side switching valve (16) is provided on the intake side of the intake air source (7).
), a discharge pipe (15) is connected to the discharge port (7a) side via a discharge side switching valve (14), and the discharge pipe (15) is connected to the discharge port (7a) side via a discharge side switching valve (14).
5) is connected to the intake/exhaust pipe (6), and an intake/exhaust switching valve (41) is provided at an appropriate location of the intake/exhaust pipe (6). Air cylinder (
Brush off the dust that has adhered to the air introduction pipe (40) for the air cylinder that communicates with the air conduit passage (24) and (21), and/or the filter (2) installed in the destination hopper (1). A suction type air transport device, characterized in that it is connected to an air introduction pipe (13) for brushing off the air. (3) The air cylinder (21) is connected to the destination hopper (
The air cylinder (21) is suspended from a cylinder fixing member (28) horizontally suspended above the air cylinder (21), and the opening/closing valve (9) is provided at the tip of the piston rod (22) of the air cylinder (21). In the cylinder tube of the air cylinder (21), there is a protruding air guide passage (24) for protruding the piston rod (22) by air discharged from the suction air source (7), and the piston rod (22) is recessed therein. On the other hand, the cylinder fixing member (20) has a protruding air passage (25) that communicates with the protruding air guide passage (24) of the air cylinder (21).
) and an immersive air passageway (27) communicating with the immersion air guide passageway (25), so that these air passageways (26), (2
7) is connected to the air cylinder air introduction pipe (40), and the air cylinder air introduction pipe (40) receives the discharge air introduced from the discharge pipe (15) through the intake and exhaust pipe (6). Air conduction path (24) and immersed air conduction path (
Claim No. 25) is provided with a piston rod actuation switching valve (42) that selectively supplies the piston rod to any one of the piston rods (42).
Suction type pneumatic transport device as described in .