JPS5934603B2 - Temporary storage tank for suction pneumatic transporter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a temporary storage tank for a suction type pneumatic transporter, and its purpose is to be inserted between the main unit and the attachment of a vacuum type pneumatic transporter to reduce the load on the main unit and reduce fA. Temporary storage tanks that allow continuous operation of the main machine, and transportation routes such as pneumatic transportation of grain at port quays, pneumatic transportation of mold river sand at foundries, and pneumatic transportation of pellets at chemical plants, etc. This method reduces the load on the suction machine while continuously operating the transportation mechanism for the required amount of transported materials (including wet transported materials such as sludge and sewage).

), the provision of a temporary storage tank from which the

Conventionally, as a device for discharging the transported goods during suction pneumatic transport to the outside of the transport mechanism while continuously operating the transport mechanism, there is a rotary feeder 1 as shown in Fig. 1 or a lock hopper 2 as shown in Fig. 2. It has been known.

However, in the rotary feeder 1, unless the particle size 3 of the transported material is 10 rlLn or less, the rotary feeder 1
This has the drawback that it cannot be used in transportation mechanisms that require a high degree of vacuum due to the large amount of air that enters the mechanism due to the particles being caught in the lock hopper. Since the lower valve 7) is used, there is a drawback that the height h of the apparatus is inevitably high, and after opening the lower valve 7 and returning the chamber 6 to the same pressure as the inner chamber 7a of the apparatus after discharging the transported object 3. Since the transportation mechanism has to be operated continuously, the operation becomes complicated and there is also the disadvantage that the operator must be available at all times, and neither of these systems can be said to be a desirable device.

On the other hand, Utility Application No. 47-43808 (Utility Application No. 49-438
No. 8) discloses the structure of a separator for an automatic multi-system vacuum transport device.

However, in this existing device, the capacitance is detected by a level switch, and the free balance damper is actuated by the positive and negative pressures in the separator, with an automatic opening/closing valve actuated by a signal from the level switch.

As described above, since this previously proposed device operates the opening and closing of the free balance damper by electrical control, it works well when the expropriated object is a dry object, but it works well when the expropriated object is a wet object. There was a drawback that it did not work well when it was.

Therefore, the inventors improved the device with the above-mentioned drawbacks, and when the suction type pneumatic transporter is at a high vacuum level, the required amount is transferred outside the mechanism during continuous operation while maintaining the high vacuum level. This invention was arrived at as a result of intensive research into a device that is simple and capable of discharging transported objects such as sludge and sewage.

That is, the present invention is a temporary storage tank that is inserted into the path of a suction type pneumatic transport machine, and includes a detection device that detects the volume of retained matter in this tank at a preset required amount, and a detection device that works in conjunction with this detection device. It consists of a vacuum release device that releases the vacuum state inside the tank, and a discharge device that discharges the tank's contents to the outside of the tank at the same time or in conjunction with the vacuum release device or with a slight delay.This detection device is an umbrella-type It consists of a saucer and a support frame whose base end is pivotally attached to the center of the umbrella-shaped saucer and whose upper end is fixed to the lower end of the casing of the vacuum release device, and the vacuum release device is connected to the casing, the spring mechanism, and the blocking valve. This spring mechanism consists of a sleeve that passes through the upper part of the storage tank and is attached to the tank, and a spring that holds the umbrella-shaped saucer and the contents stored in the sleeve up to a preset weight. a spring shaft that supports the spring and is slidably locked in the sleeve; and a spring shaft that closes the lower end surface of the sleeve whose lower end protrudes into a through hole formed in the upper part of the casing. It is characterized by a blockage valve attached to the lower end, which enables continuous discharge and suction so that each of the above machines immediately returns to its current state after discharging internal matter.

This relates to a temporary storage tank for a suction type pneumatic transporter.

An embodiment of the present invention will be described below in detail with reference to the drawings.

In FIG. 3, 8 is a temporary storage tank inserted into the path of the suction type pneumatic transporter, and is made of a pressure-resistant material.

Reference numeral 9 denotes a suction port 10 for the transported goods A provided at a desired position in the tank 8.
A flexible tube that communicates with an attachment not shown in the figure, 11
is a flexible tube that communicates and connects the air suction port 12 provided at a predetermined position of the tank 8 with the main body of the suction machine (not shown).

Reference numeral 13 denotes a safety device provided on either the flexible tube 12 or the main body (not shown) as necessary when the suction path is blocked.

In this invention, the transported material A refers to solid particles such as grains, sand, pellets, chemicals, industrial or agricultural wastes, etc.
Alternatively, it refers to solid-liquid mixtures such as sludge and sludge, as well as liquids such as water, sewage, and organic matter.

Reference numeral 14 denotes a detection device that predetermines the temporary capacity of the residual matter in the tank 8 and detects this capacity.

In this example, the casa of the internal matter has a plate 15,
This receiver consists of a support frame 15c whose lower end is pivotally connected to the center portion 15a of the plate 15 and whose upper end is pivotally connected to the spring mechanism 16.

The spring mechanism 16 is installed in an airtight manner so as to penetrate through the upper part 8a of the tank 8.

This spring mechanism 16 supports the weight applied to the pan 15 up to a pre-certified weight, and when this weight is exceeded, the spring 16a expands and the pan 15 moves downward, discharging the transported retained material A to the discharge valve 17.
leads to the upper space of

Particularly when the transported internal matter A is a liquid, a level meter using a float is effective as the spring mechanism 16.

In this way, the target quantity to be detected may be volume or weight.

Reference numeral 20 denotes a vacuum release device that releases the vacuum inside the tank 8 in conjunction with the detection device 14 .

In this embodiment, a detection device 14 and a vacuum release device 20 are used.
It operates mechanically in conjunction with.

21 is a casing of the vacuum release device 20, and this casing 21 also serves as an interlocking member with the detection device 14.

The sleeve 22 of the spring 16a is fixed to the tank 8, and the spring 16
a is supported by a spring shaft 16b, and the spring shaft 16b is supported by a sleeve 22.
It is slidably locked inside (for example, by a spring seat not shown) and is interlocked with the movement of the closing valve 23, which will be described later.

21a is a through hole provided in the upper part of the casing 21, and a blockage valve 23 having a diameter larger than the diameter of this hole 21a is inserted into the sleeve 22.
The casing 2 is fixed to the lower end of the spring shaft 16b inside.
1, and the lower end of the casing 22 protrudes into a through hole 21a provided in the upper part of the casing 21.
Close or open the lower end surface of.

21b is an introduction hole that guides the tip 12a of the suction port 12 to a position where it comes into close contact with the valve 23.

Initially, the valve 23 is connected to the spring shaft 1 due to the lowering of the casing 21.
6b, it approaches the inlet tip 12a while repelling the elastic force of the spring 16 and the locking force of the sleeve 22, and when it approaches a certain distance, the valve 23 is suddenly pulled by the suction force of the inlet 12, and this sudden By this pulling, the outside air and the inside of the tank 8 are communicated through the sleeve 22, and the vacuum state inside the tank 8 is reliably released.

It can be said that the experimental knowledge of this sudden attraction is the most important point in this example.

The release of the vacuum state is completed by the close contact between the valve 23 and the suction port tip 12a, and the inflow of normal pressure air from the suction port 10, but this is not limited to this embodiment, and the case where the flexible tube 9 is blocked due to some hindrance is considered. If necessary, a safety device for introducing external air may be provided, or pressurized air may be actively introduced from the outside.

Reference numeral 24 denotes a device for discharging the internal contents of the tank 8 to the outside of the tank, and in this embodiment 1, it consists of a weight balance lid 1T.

The internal matter A introduced into the space 18 can be discharged into the tank 8 by moving the lid 17 to the position of the imaginary line under the weight of the internal matter A at the same time that the inside of the tank 8 becomes normal pressure.

The evacuation device 24 is designed to operate at the same time as the vacuum release device 14 in the tank 8 or with a slight time delay.

Weight balance lid 1 for mechanically and electrically linked valves
7, but any conventional device such as an opening/closing lid using a hydraulic cylinder may be used.

The temporary storage tank 8 of the suction type pneumatic transporter configured as described above includes a suction device (not shown) and an inlet.

12 are connected in communication with the flexible tube 11, and the suction port 10 and the attachment (not shown) are connected in communication, and when the suction port 10 is operated.
Air and cargo A are sucked in from tank 8 due to gravity.
Conveyance A is kept inside one after another.

When the amount of retained matter A to be transported reaches the amount of retained matter A preset in terms of volume or weight, it is detected by the detection device 14, and this detection causes the mechanically or electrically interlocked vacuum release device 20 to be activated almost simultaneously. The inside of the tank 8 is returned to normal pressure by the action of the device 20, and the internal matter A is mechanically or electrically interlocked with the device 20 at the same time or with a slight delay.
The discharge device 24 is operated to discharge the internal matter A in the tank 8 to the outside.

Immediately thereafter, each device returns to the state in which it performs its suction function and retains the transported object A again.

This movement continues repeatedly without stopping the operation of the suction machine (not shown).

As detailed above, the temporary storage tank of the suction type pneumatic transporter according to the present invention is an epoch-making tank that is capable of discharging a fixed amount of transported materials to the outside of the tank while the transporter is in continuous operation. By using a simple vacuum release device, we have overcome the drawbacks of the conventional rotary feeder, which is that it cannot be used unless the particle size is 10 mm or less, or that it cannot be started in a high-vacuum pneumatic conveyor. In addition, the drawbacks of the lock hopper, such as high equipment failure and complicated equipment and complicated operation, have been solved by using a simple vacuum release device and internal matter discharge device. A certain amount of pneumatic cargo is required for
It can be effectively used to pneumatically transport particulate matter, solid-liquid mixtures, or liquids that can be discharged out of the tank while the suction machine is in continuous operation.In particular, it can transport liquids and solid-liquid mixtures that were not possible with conventional equipment. This is a temporary storage tank for a revolutionary suction type pneumatic transporter that can effectively transport air and discharge it outside the tank while the suction machine is in continuous operation.

[Brief explanation of the drawing]

FIGS. 1 and 2 are sectional explanatory views of a conventional example, and FIG. 3 is a sectional explanatory view of an embodiment of a temporary storage tank according to the present invention. 8...Temporary storage tank, 14...Detection device, 20...Vacuum release device, 24...
...Discharge device, A; ... Internal distillate.

Claims (1)

[Claims] 1 A temporary storage tank that is inserted into the path of a suction-type pneumatic transporter, and includes a detection device that detects the volume of retained matter in this tank at a preset required amount, and a vacuum in the tank that works in conjunction with this detection device. It consists of a vacuum release device that releases the state, and a discharge device that discharges the residue in the tank to the outside of the tank, either at the same time as the vacuum release device or in conjunction with the vacuum release device or with a slight delay.
This detection device is composed of an umbrella-shaped saucer and a support rod whose base end is pivoted to the center of the umbrella-shaped saucer and whose upper end is fixed to the lower end of the casing of the vacuum release device, and the vacuum release device is connected to the casing. It consists of a spring mechanism and a blockage valve, and this spring mechanism penetrates through the upper part of the storage tank and is attached to the tank, and the umbrella-shaped saucer and inner holder are used to hold a preset weight stored in the housing. A spring that holds an object, a spring shaft that supports this spring and is slidably locked in the casing, and a through hole formed in the upper part of the casing. Temporary storage of a suction type pneumatic transport machine capable of continuous discharge and suction, characterized by a closure valve attached to the lower end of the spring shaft that closes the end face, and the machines described above immediately return to their current state after discharging internal matter. tank.