JP2001129419A - Pulverizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the miniaturization of a pluverizer, improvement of work efficiency, ease of maintenance and execution and to prevent the generation of dust and deadstock. SOLUTION: This pluverizer is provided with a pneumatic transportation receiving part 2 for receiving tea leaves supplied from an upstream side by pneumatic transportation, a distribution part 3 arranged below the pneumatic transportation receiving part 2, six pulverizing parts 4a to 4f which receive the tea leaves from the distribution part 3 and pulverize the leaves to produce powdered tea and are annularly arranged, a stand 6 for supporting the pulverizing parts 4a to 4f, a recovering part 7 for recovering the powdered tea pulverized by the pulverizing parts 4a to 4f toward inside and a pneumatic transportation exhausting part 8 for exhausting the powdered tea recovered by the recovering part 7 to a downstream side. As shown in figure 5, each of the pulverizing parts 4a to 4f is provided with a mill 42 composed of an upper mill 40 and a lower mill 41, a table feeder 46 for the mill which is installed below the mill 42 is provided with a driving shaft 43 for fixing a central part of the lower mill 41 by an upper end part and rotates the driving shaft 43, a blade 45 fixed to the driving shaft 43 and the lower mill 41 fixed to the driving shaft 43 by driving force of a driving geared motor 44, and a case 47 for pulverizing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher for grinding tea leaves or the like with a mortar or the like to form powder.

[0002]

2. Description of the Related Art Conventionally, as a small or table-type crusher for crushing tea leaves, buckwheat, etc., there are, for example, Japanese Utility Model Laid-Open No. 1-17.
Various inventions are provided, such as a stone mill type pulverizer of No. 4040, a pulverizer of JP-A-9-248471, and a pulverizer of JP-A-8-281132.

[0003]

However, these are used alone, and when matcha is produced in large quantities at a factory or the like, there are inconveniences such as poor production efficiency. In order to eliminate such inconveniences, when mass-producing matcha or the like at a matcha manufacturing plant or the like, as shown in FIG. 9, stone mills 542 are arranged in series and supported by a mount 506, and a drive motor 544 is driven by the stone mill 54.
2 and a plurality of millstones 542 are rotated by a driving force transmission mechanism 551 such as a chain or a sprocket to grind tea leaves or the like to secure mass productivity. However, there is an inconvenience that the drive system is located above the millstone 542 and is large and occupies a large space. Further, maintenance work on a ladder is difficult.

[0004] The tea leaves used as raw materials are put in the input hopper 503.
The tea leaves are pulverized by hand, the tea leaves are pulverized by a millstone 542, and the matcha is discharged from the millstone 542 to a collection hopper 507, and is collected by vibrating the collection hopper 507 by a vibration motor 577. However, the angle of the collection hopper 507 is loose and the powder remains even if it is vibrated no matter how much it vibrates. Since input and recovery are performed, work efficiency is poor and construction is troublesome.

[0005] Therefore, the invention described in the claims is intended to reduce the size of the crusher, improve the work efficiency, facilitate maintenance and construction,
The purpose is to prevent dust and dead stock.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the invention according to claim 1 comprises a mill comprising an upper mill and a lower mill, which are supplied with a material to be crushed, crush the material to be crushed and discharge it as a crushed material. A table feeder provided below the mill to rotate the discharge blades to discharge the crushed material downstream and supply a rotational driving force to the mortar; and a crushing case covering the table feeder and the mortar. A plurality of crushing units,
A gantry that supports the plurality of crushing sections by arranging them in a ring, and
A collecting case connected to the pulverizing case and collecting the pulverized material from the plurality of pulverizing units; and a table feeder provided at a bottom of the collecting case, and provided at a center inside the gantry. And a recovery unit. Thereby, the above-mentioned various problems can be solved suitably.

According to a second aspect of the present invention, there is provided the crusher according to the first aspect, further comprising an air transport discharge unit configured to pneumatically transport the pulverized material discharged from the recovery unit downstream. Thereby, the above-mentioned problem is suitably solved, and the collection efficiency of the pulverized material is increased.

[0008] The invention according to claim 3 is the crusher according to claim 2, wherein the pneumatic transport and discharge section is provided with a rotary valve.

According to a fourth aspect of the present invention, the air transport discharge section is connected to an air transport pipe, and the air transport pipe is bypass-connected to the recovery section by a suction pipe having a valve. The crusher according to any one of claims 1 to 3, wherein Thereby, it is also possible to collect dust in the apparatus by bypass suction from the suction pipe and air-cooling of the milling machine in the crushing section.

According to a fourth aspect of the present invention, there is provided a pneumatic transport receiving section having a case for receiving a pulverized material supplied by pneumatic transportation from an upstream side, and a forcibly provided at the bottom of the case for forcing the pulverized material. A dispensing unit having a table feeder for rotating and discharging the discharge blades while distributing the material, and a plurality of supply units connected to the case and supplying the crushed material discharged by the table feeder to a crushing unit; A pulverizer characterized by comprising: As a result, miniaturization of the pulverizer, improvement of work efficiency, and easiness of maintenance and construction can be achieved.

According to a fifth aspect of the present invention, the pneumatic transport receiving section includes a receiving pipe, and a receiver filter for separating air and a material to be crushed, and the distributing section includes: The crusher according to claim 4, wherein the crusher is a chute. The same object as in claim 4 can be achieved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 8, a crusher 1 (stone mill) according to an embodiment of the present invention is a material to be crushed (tea leaves here) supplied by pneumatic transportation from an upstream side. , A distribution unit 3 arranged in the air transportation reception unit 2, and a plurality (here, six) of annularly arranged to receive and crush tea leaves from the distribution unit 3 to make matcha. Crushing units 4a to 4f and six crushing units 4a to 4f
4g, a collecting unit 7 for collecting the green tea crushed by the six crushing units 4a to 4f toward the inside (central part), and a flow of the green tea collected by the collecting unit 7 to the downstream side. And a pneumatic transport discharge section 8 for discharging by transport. Hereinafter, each element will be described in detail.

As shown in FIGS. 1 to 3, the above-mentioned pneumatic transport receiving section 2 has a cylindrical case 20 having a ceiling and a bottom, an inspection port 21 provided on the upper part of the cylindrical case 20, and protrudes from the upper part of the cylindrical case 20. And a receiver filter 23 composed of a bag filter that separates the tea leaves from the air and discharges the air. Since the structure of the bag filter is well known, a detailed description is omitted. However, the receiver filter 23 has a rectangular cloth 24, an inspection cover 25, and a retainer protruding into the cylindrical case 20. A plurality of filters 26 having a flat shape when viewed;
Cell plate 2 that partitions the dust-containing space and the clean-side space
7. Tea leaves which are provided with a suction fan (not shown) for sucking air from the cylindrical case 20 and exhausting the air to the outside, a backwashing device (not shown) for maintaining filter efficiency, a pressure sensor (not shown), etc. Is separated from air.
Further, the cylindrical case 20 is provided with a level sensor 28 (see FIG. 3) for detecting the storage level of the tea leaves, so that tea leaves can be properly received. The charging port 22 is connected to an upstream-side granular material device such as a lorry, a silo, a hand-cutting device, and an automatic bag-opening device via an upstream pipeline (not shown).

As shown in FIGS. 1 to 3, the distribution unit 3 includes a conical cap 31 on a vertical drive shaft 30 that penetrates the center of the bottom plate of the cylindrical case 20.
The supply table feeder 34 that forcibly supplies tea leaves by driving the drive shaft 30 to rotate the blades 33.
And a plurality of (in this case, six) distribution ports 35a to 35f formed at equal intervals in an annular shape on the outer peripheral portion of the bottom surface of the cylindrical case 20.
And vertically fixed to the distribution ports 35a to 35f,
6 hopper-shaped supply chutes 36a to 36f for supplying tea leaves discharged from 5a to 35f, and supply chutes 3
Straight chute receiving chutes 37a-37f fixed to the lower ends of 6a-36f, and hopper-shaped feeding chutes 38a-38f (38d, 38f connected to the receiving chutes 37a-37f for feeding tea leaves into the upper mill 40 are not shown. ).

The crushing sections 4a to 4f shown in FIGS. 1 to 4 are provided at equal intervals in a ring shape and have the same structure, and therefore the crushing section 4a will be described. As shown in FIG. 5, the pulverizing part 4 a is a cylindrical body, and includes a mill 42 including an upper mill 40 and a lower mill 41 that are stacked one above the other concentrically and can be rotated and rubbed, and an upper mill 4 provided below the mill 42.
Drive gear 43 having a drive shaft 43 for
A mortar table feeder 46 for rotating the drive shaft 43 and the blades 45 fixed to the drive shaft 43 together with the lower mill 41 by the driving force of Case 47,
It is provided with. Each upper mill 4 from the supply chute 36a
The tea leaves, which are objects to be ground, are supplied to the holes 48, and the tea leaves are ground by the upper mill 40 and the lower mill 41, and the ground material is discharged from between the upper mill 40 and the lower mill 41, and the milling case 47 is formed. The matcha is discharged from the discharge hole 49 of the above. Drain hole 4
Numeral 9 is disposed closer to the center of the bottom surface of the collection case 71 (see FIG. 1) having a bottomed cylindrical shape, and communicates with the inlet 76 of the collection case 71. Further, an inner portion of the upper surface of the recovery case 71 is annularly arranged at equal intervals and connected to an inner peripheral portion of the bottom surface of each of the crushing cases 47. As shown in FIG. 6, the power transmission mechanism 51 transmits a driving force from the driving geared motor 44 to each driving shaft 43. The drive shaft 43 and the drive geared motor 44 of the crushing unit 4a
The drive geared motor 44 is provided with a drive-side sprocket 53g at the upper end thereof,
The lower end of each drive shaft 43 is provided with driven sprockets 53a to 53f.
Chains 55a to 55e are provided with idler sprockets 57a to 57e. The chains 55a to 55f are alternately positioned up and down to transmit the driving force properly. Since the six crushing units 4a to 4f are arranged in a ring shape and are closely spaced at equal intervals, all the mill table feeders 46 are driven by one driving geared motor 44.
Can be driven. Further, each of the pulverizing cases 47 has a hermetically sealed structure in which dust does not come out to the outside.
As the material of the mortar 42, an appropriate material such as stone, ceramics, metal or the like can be adopted. The joint surface between the upper mill 40 and the lower mill 41 is grooved, and the center hole of the upper mill 40 is eccentric to facilitate discharge of matcha.

As shown in FIGS. 5 (a) and 5 (b), inside the pulverizing case 47, a pair of small-diameter, circular cross-section, flared projections 101 are fixed to the side surfaces of each upper mill 40, and the blades A tow rod 102 standing vertically from 45;
, A small projection 103 provided on the
(See FIG. 5 (b)). This provides play because the upper mill 40 is eccentric. Further, the drive shaft 43 has a double structure, and the upper and lower portions of the inner shaft 43a are fixed to the upper exterior body 105 and the lower exterior body 106, respectively. The lower mill 41 is fixed by being inserted and fixed. On the other hand, the hollow shaft 43b is fitted with the inner shaft 43a and is rotatable relative to the inner shaft 43a. Therefore, the inner shaft 43
aA bearing 107 is mounted between the upper end portion and the upper exterior body 105, and a bearing 10 is provided between the upper exterior body 105 and the lower exterior body 106.
8, 109 are mounted. In addition, the lower end of the inner shaft 43a is externally fitted with and fixed to the driving sprocket 53a.
A chain 55a is wound around the driving sprocket 53a.

As shown in FIGS. 1 to 5, the gantry 6 has a cylindrical body 61 having a ceiling surface, a plurality of side inspection ports 62 provided on the side surface of the cylindrical body 61, and a plurality of (in this case, 4
The main body is provided with support legs 63a to 63d which are erected and whose upper end supports the bottom surface of the outer peripheral portion of the cylindrical case 20.

As shown in FIG. 1, a collecting unit 7 includes a bottomed, heavenly cylindrical collecting case 71 fixed to the upper surface of the inner central portion of the gantry 6, and a disk provided on the upper surface of the collecting case 71. Shape of the upper inspection port 72, a side inspection port 73 provided on the side surface of the collection case 71, and a blade 74 provided on the inner bottom surface of the collection case 71 are rotated by a driving geared motor 75 to forcibly matcha. And a collection table feeder 77 which is discharged from a discharge port 78 of the bottom plate. The collecting case 71 is connected to the outer peripheral portion of the bottom surface of the crushing case 47 and communicates with the discharge hole 49.
f, and is arranged in the central area.

As shown in FIG. 1 and FIG.
Driving the discharge cylinder 81 connected to the discharge port 78 on the bottom surface of the collection case 71, the rotary valve 82 connected to the discharge cylinder 81 and pneumatically transporting the matcha discharged from the collection table feeder 77, and the rotary valve 82 A drive geared motor 83, an adapter 84 for pneumatic transportation connected to the rotary valve 82, and an air transportation pipe 85 connected to the adapter 84 and penetrated through the gantry 6 to pneumatically transport matcha to the downstream side are provided. . Further, a manual valve 86 (here, a ball valve) is provided at an end of the air transport pipe 85. 7 and 8, the manual valve 86 includes a bushing 87, a plurality of tubes 89, and a tube receiver 9.
0, a plurality of one-touch joint union elbows 91 are connected, and the tip of the tube 89 is connected to the side surface of the upper inspection port 72. Thereby, since they act as a bypass, by opening the manual valve 86, it is possible to apply a negative pressure for pneumatic transportation to the collection unit 7, thereby enabling a smooth recovery of matcha and preventing dust from coming outside. In addition, at the time of cleaning the inside, the inside of the collection unit 7 can be cleaned by applying a negative pressure to the collection unit 7.
Further, the suction amount can be adjusted. Since matcha is a fine particle, it tends to be clogged in a tube, so that the negative pressure for pneumatic transportation is set to be strong and such a bypass is possible. The pneumatic transportation pipe 85 is fixed to the gantry 6 with a pipe blind plate 93, a pipe mounting seat 94, and U bolts. In some cases, an automatic valve may be used instead of the manual valve 86.

Next, the operation of the crusher 1 will be described.
When the crusher 1 shown in FIGS. 1 and 2 is installed in, for example, a tea factory, a raw material supply pipeline (not shown) is connected to the inlet 22. Further, a pipeline (not shown) for transporting products is connected to the air transport pipe 85. In this state, the raw material supply line and the product transport line are connected, and the crusher 1 can be operated. To operate the crusher 1, power is supplied to the above-described drive system such as a geared motor, a control unit (not shown) is connected to a commercial power supply, and a switch is turned on from a control panel (not shown). As a result, the material to be ground (tea leaves) supplied into the supply table feeder 34 from the input port 22 is stirred by the blades 34 while being distributed at six equally distributed openings 35 a on the outer peripheral surface of the bottom plate. Discharge to ~ 35f. When the operation of the supply table feeder 34 is started, the motor fan of the receiver filter 23 starts operating, and the air including the tea leaves pneumatically transported into the supply table feeder 34 includes the tea leaves and the air. And the air is discharged.

As shown in FIGS. 1 to 4, the distribution ports 35a to 35f
Tea leaves discharged from each of the six supply chutes 3
It is distributed to the upper part of the die 42 via 6a to 36f and the receiving chutes 37a to 37f. The lower mill 41 is rotated by the driving force of the power transmission mechanism 51 from the driving geared motor 44 to crush the tea leaves, and the mill table feeder 4
The sixth blade 45 is rotated to be forcibly discharged from the discharge hole 49 to the collection case 71.

As shown in FIG. 1 and the like, the collection table feeder 7
7, the matcha dropped into the drive geared motor 75
Are pushed out from the discharge port 78 provided on the outer peripheral surface of the bottom plate by the blade 74 driven by the blade. The air is transported pneumatically to the downstream side via a pipeline for pneumatic transportation via an adapter 84 and an air transportation pipe 85 by a rotary valve 82 by a rotary valve 82 by a collection table feeder 77 from a discharge port 78 of a recovery case 71 through a discharge tube 81. You. By opening the manual valve 86, the collection unit 7 and the pneumatic transportation pipe 8 are opened.
5 and a plurality of tubes 89 and the like (see FIGS. 7 and 8) communicate with each other to make the inside of the collecting section 7 a negative pressure, thereby facilitating pneumatic transportation and preventing leakage of dust to the outside.

According to the crusher 1 described above, the following effects are obtained. (1) The drive system can be brought to the lower part of the dies 42 by arranging the dies 42 in a ring shape and adopting a table feeder for collecting the matcha from the dies 42 to reduce the collection space. As a result, the size of the entire apparatus can be reduced. As a result, when performing maintenance of the drive system, maintenance can be performed directly from the floor surface without using a ladder or the like, and maintainability such as maintenance, inspection, repair, and cleaning is further improved. In particular, since the drive system is arranged below the die 42, maintenance of the drive system can be performed on the lower side. further,
By removing upper structures such as the inlet 22, the receiver filter 23, and the supply table feeder 34 attached to the upper part of the mill 42, it is possible to apply the present invention to manual input of raw materials. Can be reduced in size.

(2) A forced discharge type supply table feeder 34 is used as a means for distributing raw materials to the dies 42, and a forced discharge type collection table feeder 77 is used as a means for collecting products from the dies 42. Discharge is possible. Therefore,
In a screw feeder or the like, powder accumulates in the clearance between the screw and the cylinder, and dead stock occurs. This dead stock is eliminated by the table feeder.

(3) Since the mortar 42, which is liable to be scattered as dust, such as tea, is covered with a crushing case 47, the dust is not easily emitted to the outside of the apparatus. As a result, the inside of a tea factory or the like in which the crusher 1 is installed becomes clean, and an extremely hygienic work environment is provided.

(4) As a means for distributing, supplying, collecting and discharging the raw material to the crusher 1, when supplying and discharging the crushed material by a mechanical device such as a screw conveyor, for example, a conveyor,
Gates, vibrating feeders, etc. are conceivable, but dead stock and dead space increase, which is inconvenient. Stock can be reduced and dead space can be reduced.

(5) An air transport receiving unit 2 and a distribution unit 3 for supplying raw materials are provided in the upper part, and pulverizing units 4a to 4f and a pneumatic transport discharging unit 8 are provided in the central part.
In addition to the pulverizing function, a device with excellent cost performance is realized despite having multiple functions such as a dust collecting function, a distributing and supplying function, a collecting function, and a transporting function. In addition, transportation and installation to a tea factory and the like are facilitated. Furthermore, by sharing the case of the pneumatic transportation receiving unit 2 and the case of the distribution unit 3, there is an effect of further reducing the space.

(6) Since the bypass is made possible by connecting the collecting section 7 with the air transport pipe 85 and the manual valve 86, the tube 89, etc., the inside of the collecting section 7 can be made to have a negative pressure, the discharge of matcha can be made smooth, and the outside can be made. Dust can be prevented from leaking to the outside, and there is also an effect of cooling the die.

It should be noted that the present invention is not limited to the above-described embodiments or embodiments, and modifications and the like can be made without departing from the technical idea of the present invention. Such modifications and equivalents are also included in the technical scope of the present invention. For example, the present invention can be applied not only to crushing tea leaves but also to crushing grains of cereals.

[0030]

According to the invention described in the claims, the size of the crusher can be reduced, the working efficiency can be improved, the maintenance and construction can be easily performed,
Prevention of dust and dead stock can be realized.

[Brief description of the drawings]

FIG. 1 is a front view showing the internal structure of a crusher according to an embodiment of the present invention.

FIG. 2 is a right side view of the crusher.

FIG. 3 is a plan view of the crusher.

FIG. 4 is a sectional view taken along line IV-IV of FIG.

FIG. 5A is a cross-sectional view showing an internal structure of a pulverizing unit of the pulverizer, and FIG. 5B is a plan view showing a state where the upper mill is being pulled by a towbar.

FIG. 6 is a sectional view taken along the line VV of FIG. 1;

FIG. 7 is a sectional view showing a piping system and the like connecting a manual valve and a collection case.

FIG. 8 (a) is a front view showing details of the inside of a gantry of a crusher,
(B) is a side view near the air transport pipe.

9A is a plan view of a pulverizer according to a comparative example, FIG. 9B is a front view thereof, and FIG. 9C is a side view thereof.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Crusher, 2 ... Air transport receiving part, 3 ... Distribution part, 4a-
4f: Pulverizing unit, 6: Stand, 7: Recovery unit, 8: Pneumatic transport / discharge unit, 20: Cylindrical case, 21: Inspection port, 22: Input port, 23: Receiver filter, 32: Drive geared motor, 33: Blade , 34 ... Table feeder for supply, 35
a to 35f: distribution port, 36a to 36f: supply chute,
37a-37f ... receiving chute, 40 ... upper mill, 41 ... lower mill, 42 ... mill, 43 ... drive shaft, 44 ... drive geared motor, 45 ... blade, 46 ... mill table feeder, 47 ...
Crushing case, 48 holes, 49 discharge holes, 51 power transmission mechanism, 53g drive sprockets, 53a to 53f
… Driven sprockets, 55a to 55f… chains, 5
7a to 57e: idler sprocket, 61: cylindrical body, 62: side inspection port, 63a to 63d: support leg, 7
DESCRIPTION OF SYMBOLS 1 ... Collection case, 72 ... Upper inspection port, 73 ... Side inspection port, 74 ... Blade, 75 ... Drive geared motor, 76 ...
Inlet, 77 ... Recovery table feeder, 78 ... Outlet,
81: discharge cylinder, 82: rotary valve, 83: drive geared motor, 84: adapter, 85: pneumatic transport pipe,
86… Manual valve

Claims (6)

[Claims] 1. A mill comprising an upper mill and a lower mill for receiving a supply of a material to be pulverized, pulverizing the material to be pulverized and discharging the material as a pulverized material, and rotating a discharge blade provided below the mill to rotate the material. A plurality of pulverizing units having a table feeder for discharging the pulverized material downstream and supplying a rotational driving force to the mortar, and a crushing case covering the table feeder and the mortar; And a supporting stand, and
A collecting case connected to the pulverizing case and collecting the pulverized material from the plurality of pulverizing units; and a table feeder provided at a bottom of the collecting case, and provided at a center inside the gantry. A crusher, comprising: a collecting unit; 2. The crusher according to claim 1, further comprising an air transport discharge unit configured to pneumatically transport the pulverized material discharged from the recovery unit to a downstream side. 3. The crusher according to claim 2, wherein said air transport and discharge unit includes a rotary valve. 4. The pneumatic transportation discharge section is connected to a pneumatic transportation pipe, and the pneumatic transportation pipe is bypass-connected to the recovery section by a piping having a valve. Any crusher. 5. A pneumatic transport receiving section having a case for receiving a pulverized object supplied by pneumatic transportation from an upstream side, and a pulverized object provided at the bottom of the case while forcibly distributing the pulverized object. And a distribution unit having a plurality of supply units connected to the case and configured to supply the pulverized material discharged by the table feeder to a pulverizing unit. And crusher. 6. The pneumatic transport receiving section includes a receiving pipe, and a receiver filter that separates air and an object to be crushed, wherein the distributing section is configured such that the supplying section is an upright supply chute. The crusher according to claim 5, wherein