JP2000095323A - Powder supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate cleaning and maintenance by easily assembling/ disassembling a powder supply device. SOLUTION: In a powder supply device, a conveyor 47 in a coil spring shape is arranged in a powder reserving case 44 and the conveyor 47 is inserted in a carriage pipe 41 to discharge a fixed amount of powder from the outlet end 41a of the carriage pipe. The carriage pipe 41 is fitted in a boss 48 formed on the reserving case 44 in a removable manner and fixed thereto with bolts in a detachable manner. The conveyor 47 is inserted through an outlet hole 44a into the reserving case 44 and its end protrusion 47a is axially inserted in an engagement groove 46a formed in a shaft, so that a rotary guide shaft 46 is engaged with the conveyor 47 in a rotating direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder supply device for supplying a predetermined amount of powder to a predetermined location, and more particularly to a powder supply device for dissolving powder in a liquid such as water, such as a dissolution tank. The present invention relates to a powder supply device suitable for:

[0002]

2. Description of the Related Art As a powder supply apparatus for supplying powder from a storage case to a predetermined location such as a tank through a transfer pipe,
A screw-type conveyor mechanism is widely used because it can be transported reliably and the supply amount can be accurately adjusted.

As a screw-type conveyor, there is a conveyor using a coil spring having no shaft, in addition to a conveyor having a normal screw shaft integrally formed with spiral blades on the outer periphery of a base shaft.

A coil spring type conveyor has a simpler structure than a spiral blade type screw shaft type conveyor.
The cost is low, the washing is easy, and the powder does not clog the root of the blade unlike the screw shaft type.

[0005]

However, in the conventional coil spring type conveyor, one end portion in the axial direction is connected to the rotary drive shaft and the drive rotary shaft for driving the rotary guide shaft and the like is prevented in order to prevent bending. The storage case is fixed to the shaft, and it is difficult to remove the storage case without disassembling it. Also, since the transfer pipe is formed integrally with the storage case, it is also difficult to remove the storage case.

Further, in the case of the coil spring type conveyor, the powder in the storage case cannot be completely carried out, and the powder remains in the transport pipe at the end of the powder charging operation. In particular, since the inside of the transfer pipe is fitted with a coil spring type conveyor having substantially the same diameter as the inside diameter of the transfer pipe, powder tends to remain, and cleaning and maintenance work is troublesome.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to improve the efficiency of cleaning and maintenance by making it easy to disassemble and assemble a powder supply apparatus.

[0008]

In order to achieve the above object, the invention according to claim 1 of the present application is directed to a powder storage case, a conveying pipe protruding outside the case from an outlet hole of the storage case, and a storage tube. Equipped with a coil-spring-type conveyor extending from the inside of the case to the outlet of the discharge pipe through the inside of the transfer pipe, and a rotating shaft connected to the conveyor with the same axis, and the powder in the storage case is transferred through the transfer pipe by rotation of the conveyor. In the powder supply device discharging from the pipe outlet, a boss is provided in the outlet hole, and the base end of the transport pipe is fixed to the boss so that it can be inserted and removed,
An engaging groove extending in the axial direction is formed in the rotating shaft, an engaging protrusion extending in the axial direction is formed in the base end of the conveyor, and the engaging protrusion of the conveyor inserted from the outlet hole is formed in the engaging groove in the axial direction. By inserting, the rotating shaft and the conveyor are engaged in the rotating direction.

[0009] The invention according to claim 2 is a method for manufacturing a sealed tank,
2. The powder feeding apparatus according to claim 1, wherein the powder is fed from the conveying pipe to the outlet of the conveying pipe so that the powder can be easily supplied and a sealed state can be maintained after the feeding. A case is arranged, and a powder input cylinder and a rod support cylinder for closing are provided on the same axis on opposing walls of the powder input case, and an outlet end of the conveying pipe is inserted into the powder input cylinder. Face the inside of the charging case, a closing rod is slidably fitted to the rod support cylinder via a seal, and the closing cylinder is closed in an airtight state at the tip of the closing rod in the charging case, and A closing lid having a recess for accommodating the outlet end of the transfer pipe when closed is provided, and the end of the closing rod outside the charging case is interlocked with the drive cylinder.

[0010]

FIG. 1 shows an example in which a powder dispensing device of the present invention is provided in a detergent dissolving and dispensing device installed in a cleaning factory for rental wipes and the like. And water to dissolve the powdered detergent to a predetermined concentration,
This is a device for selectively supplying the generated detergent liquid (solution) to a plurality of washing machines (not shown).

The dissolving tank 1 is integrally provided with an upper cylindrical portion 1a and a lower conical portion 1b. The upper end is closed in an airtight state by a tank lid 3, and the lower end is provided with a diaphragm type tank opening / closing valve 4. I have. The outlet of the tank opening / closing valve 4 is connected to a T-shaped pipe 5, and one end of the T-shaped pipe 5 is branched to a plurality of detergent liquid supply pipes 7 via a reducer 6. Each detergent liquid supply pipe 7 can be opened and closed by an electromagnetic liquid supply valve 8 and is connected to a washing machine. A drain valve 21 is connected to each detergent liquid supply pipe 7.

Water supply pipes 14 and 15 having water supply valves 11 and 12 are connected to the cylindrical portion 1a and the conical portion 1b, respectively. Both water supply tubes 14 and 15 are connected to a water supply source 17 such as a water pipe. A water supply pipe 20 having a water supply valve 19 is connected to the other end of the T-shaped pipe 5 via a reducer 18, and the water supply pipe 20 is connected to a water supply source 17. Each water pipe 14,15
Is opened in the tank along the inner peripheral wall surface of the melting tank 1, thereby generating a swirling flow (spiral flow) in the melting tank 1.

The tank lid 3 is integrally formed with a charging case mounting port 22 and connected to an air vent pipe 23.
The air vent pipe 23 is provided with an upper limit pressure switch 25, a lower limit pressure switch 26, and an air vent valve 27.
2, a cylindrical charging case 30 is detachably connected in an airtight state.

On the peripheral wall of the charging case 30, a charging cylinder 32 penetrating the peripheral wall is integrally formed.
A rod support cylinder 33 is hermetically fixed at a position facing the same axis as 2 and a compressed air supply pipe 43 having an air supply valve 42 is connected thereto.

FIG. 3 is an enlarged longitudinal sectional view of the charging case 30.
The closing rod 35 is slidably supported on the rod supporting cylinder 33 via an airtight seal packing 34, and the end of the closing rod 35 outside the case is a telescopic rod of the closing drive cylinder 36. To the closing rod 3
The case 3 has a closing lid 3 having a concave portion 37a at an end in the case.
7 is fixed, and an annular packing 39 is fixed to the closing lid 37 so as to face the tip lid seating surface 32 a of the charging cylinder 32. The drive cylinder 36 is mounted and fixed on a mount 40 formed in the charging case 30. That is,
By extending the cylinder 36, the closing rod 35
Is pushed toward the charging cylinder side, and the packing 39 is seated at a constant pressure on the lid seating surface 32a as shown by the imaginary line, thereby closing the charging case 30 in an airtight state.

The transfer tube 41 of the powder supply device 2 is inserted into the charging tube 32. The outlet end 41a of the transfer tube 41 is
The lower portion is cut out stepwise and slightly projects from the lid seat surface 32 a of the charging pipe 32 into the charging case 30.
The amount of protrusion of the outlet end 41a is set smaller than the depth of the concave portion 37a of the closing lid 37, and the closing lid 37 is
When pressed against 2a, it fits in recess 37a.

Below the conveying pipe outlet end 41a,
A transmission tube (photoelectric tube) 53 for powder detection is arranged on a peripheral wall portion of the case corresponding to a path through which the powder to be charged falls.
It is configured to detect whether or not the powder is supplied by dropping. The lower end of the charging case 30 and the mounting port 22 are detachably connected to each other by a flange 54 at a flange portion. A clamp 5 is provided at the upper end of the charging case 30.
6, the case lid 55 is detachable and attached in an airtight state.

FIG. 2 is a longitudinal sectional view of the powder supply device 2. The powder supply device 2 is provided on a base 39 and has a powder storage case 44 and the transfer pipe communicating with a case outlet 44a. 41, a rotation drive shaft 45, and a rotation guide shaft 46
And a coil spring type conveyor 47,
The powder storage case 44 is connected to a lower end of the powder storage hopper 9. The base end of the transport pipe 41 is
A fixing screw 49 which is removably fitted into a boss 48 welded to the outlet hole 44a of the
It is fixed by. The rotation drive shaft 45 is attached to the mounting table 50.
Are rotatably supported via bearings 51, 51,
The distal end is fitted into the shaft insertion hole 44b of the storage case 44 via a rotary seal 52 and protrudes into the storage case 44.

In FIG. 4, the rotary guide shaft 46 has a threaded portion 46b formed at the base end thereof, and is formed at the distal end of the rotary drive shaft 45, so that it is screwed to the screw hole 45a on the same axis. An engagement protrusion 47a projecting in the axial direction is integrally formed at the base end of the coil spring type conveyor 47, and the engagement protrusion 7a is engaged with the base enlarged diameter portion of the rotation guide shaft 46 in the axial direction. Groove 46a is formed.

As shown in FIG. 2, the coil spring type conveyor 47 is inserted into the conveying pipe 41 and fitted around the outer periphery of the rotary guide shaft 46, and the protrusion 47a is inserted into the groove 46a in the axial direction. Thus, the rotation guide shaft 46 and the conveyor 47 are engaged with each other in the rotation direction, and rotate integrally. The tip of the conveyor 47 is the transport pipe 4
1 to the exit end 41a. The rotary drive shaft 45
Is a drive motor 6 shown in FIG.
Linked to 0.

The operation of the detergent dissolving and supplying device will be briefly described. In FIG. 1, before the start of the detergent dissolving and supplying operation for one day,
The powder supply device 2 is stopped, the closing lid 37 is closed, and the water supply valve 1 is closed.
1, 12, water supply valve 19, tank opening / closing valve 4, air supply valve 4
2 and each liquid supply valve 8 are closed, and the air release valve 27 is open. When a desired washing machine is selected and a fixed amount of detergent liquid is supplied, the drive cylinder 36 is contracted to close the closing lid 37.
Is retracted, the charging cylinder 32 is opened, the powder supply device 2 is driven by the drive motor 60, and the water supply valve 1
Open 1,12. By doing so, the powder supply device 2
Then, the conveyer 47 of the coil spring type shown in FIG. 2 rotates, conveys the powdered detergent in the storage case 44 into the transfer pipe 41, and puts it into the charging case 30 from the outlet end 41a.

The melting tank 1 shown in FIG.
The powdery detergent dropped and supplied into the inside dissolves in the water supplied from the water supply pipes 14 and 15. At this time, each water pipe 14, 1
Since the water from 5 is swirling in the dissolving tank 1, the powdered detergent is dissolved in the stirring state.

When powder supply and water supply are completed in a preset time, the rotary drive shaft 45 and the spring-type conveyor 4
7 stops, and the water supply valves 11 and 12 close. Subsequently, the air release valve 27 closes, and the air supply valve 42, the tank opening / closing valve 4 and the liquid supply valve 8 of the selected washing machine open, and the air supply pipe 43 Compressed air is supplied into the charging case 30 and the dissolving tank 1, and the compressed air causes the detergent liquid in the dissolving tank 1 to pass through the tank opening / closing valve 4 and the T-tube 5 to the selected detergent liquid supply pipe 7. Supply. When the supply of the detergent liquid from the dissolution tank 1 by the compressed air is completed, the tank opening / closing valve 4 is closed.

After that, the same operations as the first powder charging and water dissolving operation and the detergent liquid supplying operation are repeated, but in parallel with the second powder charging and water dissolving operation, the first operation is performed. In operation, the water supply valve 19 is opened in order to completely feed the detergent liquid remaining in the T-tube 5 and the selected detergent liquid supply pipe 7 into the washing machine. As a result, the detergent liquid or adhered powder remaining in the T-tube 5 and the detergent liquid supply pipe 7 in the first detergent liquid supply operation is finally dissolved and sent to the washing machine.

By repeating the above-described dissolving and supplying operation, a constant amount of the detergent liquid is sequentially supplied to each washing machine.

The cleaning and maintenance work will be described. 1
At the end of the day's work, open the drain valve 21 and
By supplying water from 4 and 15, the inside of the dissolution tank 1 and the inside of the T-tube 5 are washed.

When the powdered detergent remaining in the transport pipe 41 and the charging case 30 has solidified and adhered due to moisture, when cleaning them, first, the clamp 54 in FIG. The case 30 is removed from the mounting port 22 together with the drive cylinder 36 and the like. Next, the fixing screw 49 of FIG.
To remove the transfer tube 41 from the boss 48 and the coil spring-type conveyor 47 from the outlet hole 44a of the storage case 44 in the axial direction for washing. Further, the inside of the charging case 30 can be further carefully cleaned by removing the case lid 55.

When assembling the powder supply device 2, the disassembly operation may be performed in the reverse order. The coil spring type conveyor 47 is inserted from the outlet hole 44 a of the storage case 44 and fitted on the outer peripheral surface of the rotary guide shaft 46. Then, the engaging projection 47 a at the tip is engaged with the groove 46 a of the rotation guide shaft 46. Further, the transport pipe 41 is inserted into the boss 48 and the fixing bolt 49 is inserted.
Fix with.

[0029]

[Other Embodiments] (1) The above embodiment is an example in which the present invention is applied to a dissolving and supplying apparatus in which a powdery detergent is dissolved into a detergent solution. The present invention is not limited to this, and can be applied to various devices such as a device for producing and supplying a chemical solution from a powdery medicine, a device for producing a beverage or a cooking liquid from a powdered food material, and the like.

[0030]

As described above, according to the present invention, (1) a coil spring type conveyer 47 connected to a rotating shaft is arranged in a powder storage case 44, and the conveyer 47 is placed in the transfer pipe 41. In the powder supply device that inserts and feeds a certain amount of powder from the transport pipe outlet end 41a, the transport pipe 41 is removably fitted into a boss 48 formed in the storage case 44, and is detachably attached with a bolt or the like. The fixed, coil spring type conveyor 47 is inserted into the storage case 44 from the outlet hole 44a, and its tip protrusion 47a
Is axially inserted into an engagement groove 46a formed in a rotating shaft (for example, a rotating guide shaft 46), so that the rotating guide shaft 46 and the conveyor 47 are engaged in the rotating direction. The pipe 41 can be easily disassembled and assembled, so that cleaning and maintenance of the inside of the transport pipe 41 and the coil spring type conveyor 47 become easy.
In particular, when the present invention is applied to a powder dissolving and supplying apparatus, and when supplying a powdery detergent that is hardly soluble as powder,
In many cases, the powdery detergent remaining in 1 solidifies due to moisture and adheres to the surface of the conveyor and the inner surface of the conveying pipe. However, if it can be easily disassembled and assembled as described above, cleaning and maintenance work for them will be extremely difficult. It will be easy.

(2) The powder feeding case 30 is disposed at the outlet end 41a of the conveying pipe, and the powder feeding tube 32 and the closing rod support tube 33 are coaxially mounted on the opposing walls of the powder feeding case 30. It is provided on the center, and the powder feeding cylinder 32 has a conveying pipe outlet end 41a.
Into the charging case 30 and insert the rod support tube 3
3, a closing rod 35 is slidably fitted through a seal, and the leading end of the closing rod 35 in the charging case 30 closes the charging cylinder 32 in an airtight state. A closing lid 47 having a concave portion 47a for accommodating an outlet end 41a of the transfer pipe 4 is provided.
1 and the charging case 30 can be easily charged into the charging case 30 without connecting them with a special hermetic connection device. The charging cylinder 32 can be reliably closed. That is, the powder can be supplied to the sealed container without hindering the ease of disassembly and assembly of the powder supply device 2 as described above, and the applicable range of the powder supply device is widened.

[Brief description of the drawings]

FIG. 1 is a schematic front view of an entire powder dissolving and supplying apparatus provided with a powder supplying apparatus according to the present invention.

FIG. 2 is a vertical sectional view of the powder supply device.

FIG. 3 is a longitudinal sectional view of a charging case.

FIG. 4 is an exploded vertical sectional view of the powder supply device.

[Explanation of symbols]

 2 Powder supply device 7 Detergent liquid supply pipe 8 Liquid supply valve 11, 12 Water supply valve 14, 15 Water supply pipe 30 Input case 32 Powder input cylinder 36 Drive cylinder 37 Closing lid 41 Transport pipe 41a Transport pipe outlet end 44 Powder storage Case 45 Rotary drive shaft (rotary shaft) 46 Rotary guide shaft (rotary shaft) 47 Coil spring type conveyor 48 Boss 49 Fixing screw

Claims (2)

[Claims] 1. A powder storage case, a transfer pipe protruding outside of the case from an outlet hole of the storage case, a coil spring type conveyor extending from the storage case through the transfer pipe to a discharge pipe outlet, A rotary shaft connected to the conveyor with the same axis; and a powder supply device for discharging powder in the storage case from the outlet of the transport pipe through the transport pipe by rotating the conveyor, wherein a boss is provided at the outlet hole. The base end of the transfer tube is detachably fixed to the boss, an engagement groove extending in the axial direction is formed on the rotation shaft, an engagement protrusion extending in the axial direction is formed on the base end of the conveyor, and the insertion is inserted from the outlet hole. A rotating shaft and the conveyor are engaged with each other in a rotational direction by inserting an engagement protrusion of the conveyor into the engagement groove in the axial direction. 2. The powder supply device according to claim 1, wherein
A powder feeding case into which powder is fed from the feeding pipe is arranged at the outlet of the feeding pipe, and a powder feeding cylinder and a rod support cylinder for closing are arranged on the same wall on opposite walls of the powder feeding case. The outlet end of the conveying pipe is inserted into the powder charging cylinder to face the charging case, and the closing rod is slidably fitted to the rod support cylinder via a seal. A closing lid having a concave portion for closing the charging cylinder in an airtight state and accommodating the outlet end of the conveying pipe at the time of closing is provided at an end portion inside, and an end of the closing rod outside the charging case is interlocked with the driving cylinder. A powder supply device.