JPH0790176B2 - Waste rubber crushing desulfurization equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for pulverizing waste rubber in a desulfurized state so that it can be effectively reused.

[0002]

2. Description of the Related Art At present, a huge amount of used waste rubber is generated. In particular, the amount of waste tires generated is extremely large, and there is a strong demand for the development of energy-saving type devices that can effectively reuse the waste tires.

Waste rubber such as waste tires can be incinerated and discarded. However, waste rubber cannot be effectively reused by incineration. In addition, the waste rubber incinerator has a short life and the incineration cost rises. Furthermore, when incinerated, foul odors and black smoke are likely to occur, which causes air pollution.

The following techniques have been developed in order to effectively reuse waste rubber. JP-A-54-86518, JP-A-55-98235, and JP-A-56-76439 disclose that powder rubber of a waste tire for automobiles is mixed with waste acid pitch and heated to 120 ° C. or higher. A technique of heating to deoxidize and desulfurize, and then adding a cationic emulsifier to form an emulsified composition, and adding a styrene resin emulsion to the emulsified composition to form a paved road material is described.

The above-mentioned publication describes a method for producing recycled rubber by pulverizing waste tires and then desulfurizing them. In this method, a waste tire is cut into a large size and then crushed into smaller pieces at room temperature. The finely ground rubber that has been crushed removes fiber debris with a centrifuge. Oil mixed with fine-grained rubber at 200 ° C, 10
It is heat-compressed under a pressure of 20 kg / cm ² to form desulfurized castella. Further, an extender, a vulcanizing agent, a vulcanization dispersion aid, a softening agent, a vulcanization accelerator and the like are added to this and kneaded, and this is rolled and vulcanized and molded.

Further publications describe a method of making a material for use in injection molded articles using waste tire rubber. In this method, a powder of vulcanized rubber obtained by grinding a waste tire is treated with a desulfurizing agent. Sulfur is added to the amorphized desulfurized rubber and kneaded, and then thermoplastic resin is added and heated to a temperature not lower than the vulcanization temperature to be kneaded and vulcanized to be molded.

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The techniques for recycling waste rubber described in these publications make waste rubber large (5 cm to
10 cm), medium (3 mm to 2 cm), small (1 mm to 2 m)
m) and several steps of pulverization, and then desulfurization and reuse. Thus, the reason for finely pulverizing in a complicated step is to uniformly desulfurize the waste rubber even in the center of the desulfurization step. Therefore, the crushing of the waste rubber takes a lot of time and labor, and the treatment cost becomes high. Further, desulfurization of the pulverized waste rubber powder also requires a considerable treatment cost, and there is a drawback that the total cost of pulverization and desulfurization becomes high. High processing costs limit the effective reuse of waste rubber. This is because, in order to effectively reuse a huge amount of waste rubber, it is economically unprofitable if the processing cost is high, and it can be used only for a special purpose. The most important issue for practical use of the effective reuse of waste rubber is how to reduce the processing cost.

The present invention was developed for the purpose of achieving this. An important object of the present invention is to easily and efficiently grind waste rubber, and to heat waste rubber in the grinding step. Another object of the present invention is to provide a pulverization / desulfurization device which can be desulfurized by crushing and desulfurization at the same time to process a large amount of waste rubber at low cost.

[0009]

The waste rubber crushing and desulfurizing apparatus of the present invention has the following constitution in order to achieve the above-mentioned object. The crushing and desulfurizing apparatus for waste rubber comprises a waste rubber supplying means 1, a heating crushing means 2 for heating and crushing the waste rubber fed from the supplying means 1, and a waste rubber to be supplied.
And a friction crushing gap adjusting means 20 for adjusting the heat generation amount of the rubber . The heating and crushing means 2 includes a first crushing member 9 and a second crushing member 7, which are close to each other and relatively rotate. In the gap between the first crushing member 9 and the second crushing member 7,
A friction grinding gap 3 is provided for grinding the waste rubber while rubbing it for desulfurization . The second crushing member 7 has the outer diameter of the tip.
It is formed thick. Further, friction grinding gap adjusting means 20
Moves the first crushing member 9 and the second crushing member 7 in the axial direction.
Then, the clearance of the friction grinding clearance 3 is adjusted. Supply means 1
Waste rubber supplied from is rubbed in the friction crushing gap 3 between the rotating first crushing member 9 and the second crushing member 7, heated by friction heat, and crushed in a desulfurized state. .

[0010]

The crushing and desulfurizing apparatus for waste rubber of the present invention efficiently crushes the waste rubber in the following state and heats it during crushing to desulfurize the waste rubber. The waste rubber is supplied to the supply means 1. The feeding means 1 feeds the fed waste rubber into the friction crushing gap 3 between the first crushing member 9 and the second crushing member 7. Waste rubber which is fed to the attrition milling gap 3 is ground while being rubbed with the first crushing member 9 which is relatively rotated with each other and the second pulverization member 7. The waste rubber passing through the friction crushing gap 3 comes into close contact with the surfaces of the second lead crushing member and the first crushing member and is efficiently heated. The waste rubbers passing through the narrow friction crushing gap 3 rub against each other and generate heat by themselves, or rub closely against the heated first crushing member and the second crushing member and are efficiently heated.

The waste rubber simultaneously heated by frictional heat at the time of pulverization is heated without temperature unevenness to be desulfurized uniformly. Toku
In addition, the pulverization desulfurization apparatus of the present invention, a huge amount of waste rubber,
It has the feature that it can be desulfurized uniformly and can be crushed efficiently and in a short time.
It For this reason, the device of the present invention is used to generate a huge amount of waste gas.
It has the feature that it can desulfurize and pulverize rubber at low cost.

Waste rubber is desulfurized, crushed and reused effectively
It is extremely important to reduce the processing cost and
By uniformly desulfurizing all the waste rubber and crushing it into small pieces
is there. Equipment for crushing waste rubber and equipment for desulfurization
Has been developed, waste rubber is crushed with a crusher and added.
It can be desulfurized with a thermal device. However, conventional
Desulfurize and crush waste rubber using these devices
Therefore, the processing cost will be considerably high. It's a powder
Physically cut into small pieces with a crusher, crush and heat with a heating device
It is then chemically desulfurized. Crushed waste rubber
In order to fully desulfurize the inside
It is necessary to heat it to a long time, which increases the desulfurization time. this child
And raises the cost of the desulfurization process. Also waste rubber
To reduce the desulfurization time
Has an effect on. However, waste rubber should be crushed into small pieces.
That also raises the cost of grinding. Especially for waste rubber
What is important for processing is that the amount is extremely large.
In addition, it is efficient and cheap. This is the disposal
Determines whether rubber can be used effectively. Of the present invention
The equipment is in a very unique state while desulfurizing waste rubber.
Grind at the same time. Especially, the desulfurization process, which is a chemical process
And the physical crushing process under ideal conditions at the same time.
It The device of the present invention is provided between the first crushing member and the second crushing member.
Rotate the second grinding member by providing a friction grinding gap in the
By crushing the waste rubber by rubbing it in the friction crushing gap
To do. The waste rubber crushed in this state is narrow friction crushed.
It is rubbed in the gap and self-heats due to frictional heat. Self-heating
The entire waste rubber is heated uniformly. Because of this, friction
The waste rubber that passes through the crushing gap is uniformly heated to high temperature.
Heated for efficient desulfurization. Granular waste rubber on the surface
It is not heated from the inside to the inside. Self-heating
The waste rubber rubs strongly when passing through the friction grinding gap.
It is heated almost instantly to a high temperature inside. Furthermore
Friction in a narrowly crushed and thinly spread state
As a result, the entire waste rubber that passes through the friction grinding gap is
Heated evenly. Friction grinding gap at the same time as being heated
It is crushed into small pieces. Therefore, the crushing desulfurization equipment of the present invention
Place the waste rubber passing through with a friction grinding gap.
As a chemical treatment by uniformly heating the inside in a short time
The desulfurization process is completed, and at the same time, it is pulverized into small pieces. Ma
The grinding and crushing gap is chemically desulfurized and physically crushed.
Extremely efficient, and in an ideal environment almost instantly
To ensure that waste rubber can be effectively reused.
It

Further, the waste rubber crushing desulfurization apparatus of the present invention
Is to increase the outer diameter of the tip of the second crushing member,
Friction provided between the first crushing member and the second crushing member by relatively moving the first crushing member and the second crushing member in the axial direction.
The crushing gap is adjusted. Friction grinding gap spacing
If you adjust to a narrower value, the frictional heat of the waste rubber will increase,
The heating temperature becomes high. Therefore, the crushing desulfurization equipment of the present invention
The friction grinding gap is adjusted to control the desulfurization temperature of the waste rubber.
Adjusting to the optimum temperature, you can efficiently pulverize while desulfurizing
There are features. Desulfurization treatment that chemically changes waste rubber
And crushing, which is a physical process, are adjusted to an ideal state.
Alignment is extremely important for this type of device
Is. It has a high temperature for desulfurizing and crushing waste rubber.
If it is too much, the crushed waste rubber will burn and become effective.
Can not be reused, and conversely, the heating temperature of waste rubber
If it is too low, it will not be able to effectively desulfurize and be ground.
It Discarded rubber, such as the new rubber, the type and material is Hitoshi
It's not the same thing. The crushing desulfurization equipment for waste rubber
Desulfurization and pulverization of various rubber materials under optimal conditions
Is important. The device of the present invention comprises a first crushing member and a second powder.
By adjusting the friction grinding gap between the grinding members,
Effective, yet simple structure, various types of waste rubber
Can be desulfurized and crushed under optimum conditions.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment shown below are merely you illustrates an apparatus for embodying the technical idea of the present invention, apparatus of the present invention, materials, shapes, structures, arrangements, processing conditions, etc. Is not specified below. The device of the present invention can be modified in various ways within the scope of the claims.

Further, in this specification, for easier understanding of the claims, the numbers corresponding to the members shown in the embodiments are referred to as "claims", "operation column", and "problem". It is added to the members shown in the column of "Means for solving". However, the members shown in the claims are not limited to the members of the embodiment.

[0016] Milling desulfurization of waste rubber shown in the schematic cross-sectional view of FIG. 1 and FIG. 2 includes a supply unit 1, and the heating breaking means 2, provided
Friction grinding gap adjustment to adjust the heat generation amount of waste rubber supplied
And means 20 . The supply means 1 includes a supply cylinder 4, a screw shaft 5, and a motor 6 that rotates the screw shaft 5. The heating and crushing means 2 includes a cylindrical first crushing member 9 and a conical second crushing member 7 . The friction crushing gap adjusting means 20 is a first crushing member.
9 Adjust the distance of the friction crushing gap 3 between the second crushing member 7 and the second crushing member 7.
The rotating shaft of the second crushing member 7 is
It is the movable table 14 attached by being attached.

The supply cylinder 4 is arranged vertically, and a cylindrical first crushing member 9 is connected to the lower end of the supply cylinder 4.
The supply cylinder 4 is connected in series to the cylindrical first crushing member 9 . The supply cylinder 4 is processed into a tubular shape having two screw shafts 5 incorporated therein. The inner surface of the supply cylinder 4 is machined to have an inner diameter that approaches the outer peripheral edge of the fin of the screw shaft 5. The gap between the inner surface of the supply cylinder 4 and the outer peripheral edge of the fin of the screw shaft 5 is
Usually 0.1 mm to 30 mm, preferably 0.3 mm to 2
It is adjusted to the range of 0 mm.

The supply cylinder 4 has an opening on the right side of FIG. 1 and is connected to a waste rubber supply hopper 8. The supply hopper 8 is connected and opened between the two screw shafts 5 so as to supply the waste rubber between the two screw shafts 5.

The two screw shafts 5 are rotatably arranged inside the supply cylinder 4. The two screw shafts 5 are rotated in opposite directions by a motor 6, and the waste rubber put into the supply hopper 8 is crushed and sent under pressure to the first crushing member 9. Therefore, a spiral fin 10 is provided on the surface of the screw shaft 5. The fins 10 of the screw shaft 5 are spirals having mutually opposite pitches, and the screw shaft 5 is rotated in a state where the fins 10 are meshed with each other, and the waste rubber is first crushed by the first crushing member 9
Transfer to. The two screw shafts 5 shown in the figure guide the fins 10 of the screw shafts 5 adjacent to each other between the fins 10. Although not shown, the two screw shafts can be arranged in the cylinder in a state where the outer circumferences of the fins are close to each other, in other words, the fins of the adjacent screw shafts are not inserted between the fins. in this case,
The two screw shafts can be rotated by different motors at different rotation speeds. The two screw shafts having different rotation speeds can cut and crush the supplied waste rubber and transfer the waste rubber at the portions where the fins approach each other.

As described above, the supply cylinder 4 having the two screw shafts 5 has a feature that the waste rubber can be transferred more efficiently than the supply means 1 having the single screw shaft 5 incorporated therein. Further, the two screw shafts 5 have a feature that the waste rubber is cut at the portions where the fins 10 mesh with each other so that the waste rubber can be efficiently pumped. Therefore, it is possible to supply waste rubber in the form of a long string, sheet, bag, etc. as it is, and to realize a shape in which waste rubber of various shapes can be efficiently rubbed in the next step.

The two screw shafts 5 are fixed at their upper ends with gears that mesh with each other and rotate in opposite directions.
One screw shaft 5 is connected to a motor 6, and the motor 6 drives both screw shafts 5 to rotate. However, although not shown, it is also possible to separately drive the motors by connecting them to the two screw shafts.

The supply hopper 8 has a lower surface inclined downwardly toward the supply cylinder 4 so that the waste rubber supplied here is slid into the supply means 1 by its own weight. The waste rubber put into the supply hopper 8 is pressed against the side surface of the screw shaft 5 by its own weight, and the screw shaft 5 scrapes the waste rubber from the side surface and supplies it to the heating and pulverizing means 2. The force with which the waste rubber is pressed against the side surface of the screw shaft 5 can be adjusted by the gradient with respect to the bottom surface of the supply hopper 8. When the bottom of the supply hopper 8 approaches vertically, the force with which the waste rubber is pressed against the screw shaft 5 becomes stronger, and conversely, when the bottom of the supply hopper 8 approaches horizontally, the pressing force becomes weaker. The inclination angle of the bottom surface of the supply hopper 8 with respect to the horizontal plane is usually adjusted to 40 to 80 degrees, preferably 45 to 70 degrees.

The first crushing member 9 has a cylindrical shape and has a friction opening 11 on its inner surface. The friction opening 11 rubs and heats the waste rubber to pulverize and simultaneously desulfurize it. The friction opening 11 discharges the waste rubber from the lower end after heating and crushing the waste rubber. The friction opening 11 is formed in a tapered shape whose cross-sectional area increases toward the opening end at the lower end. The friction opening 11 having this shape can efficiently crush the waste rubber, and
It has the feature that the heat generation state can be adjusted by the type of waste rubber supplied and the water content attached.

FIG. 3 shows the cross-sectional shapes of the first crushing member 9 and the second crushing member 7 having the friction opening 11 on the inner surface. As shown in this figure, the friction opening 11 is provided with a plurality of grooves 12. The groove 12 is provided on the inner surface of the friction opening 11 so as to extend in the axial direction. 5 to 50 grooves are provided on the inner surface of the friction opening 11. The depth and width of the groove 12 are designed in the range of 1 to 10 mm. As shown in FIG. 3, the cross-sectional shape of the groove 12 may be semicircular in cross section, or may be square or trapezoidal although not shown. Thus, the friction opening 11 provided with the groove 12 is
Efficient self-heating with less slip of waste rubber. However, since the waste rubber has a large frictional resistance, it is not always necessary to provide the groove 12.

By the way, this pulverizing / desulfurizing device ideally desulfurizes and pulverizes the waste rubber completely, but it is not always necessary to heat the waste rubber to a temperature equal to or higher than the desulfurization temperature to completely desulfurize it. It is also possible to grind the waste rubber in a state in which it is partially desulfurized. The desulfurization state of the waste rubber can be controlled by the heating temperature of the waste rubber. To fully desulfurize waste rubber,
The heating temperature is 200 ° C. or higher, preferably 250 ° C. or higher. Natural rubber has a lower desulfurization temperature than waste rubber. Synthetic rubber can be sufficiently desulfurized by heating at 250 to 350 ° C. Natural rubber can be desulfurized at about 100 ° C lower temperature than synthetic rubber.

The heating temperature of the waste rubber is adjusted by adjusting the friction crushing gap, adjusting the relative rotation speed of the first crushing member and the second crushing member, and further adjusting the heating temperature of the first crushing member and the second crushing member. Can be controlled. The friction grinding gap can be narrowed, the rotation speed of the second grinding member can be increased, the heating temperature of the first grinding member or the second grinding member can be increased, and the heating temperature of the waste rubber can be increased.

In the friction opening 11 of the cylindrical first crushing member 9, a conical second crushing member 7 is arranged coaxially therewith. The second crushing member 7 is shown in FIGS. 3 and 4. The second crushing member 7 shown in these figures has a taper shape with a thin tip, and has four ridges 13 extending in the axial direction on the surface. The ridge 13 rubs and crushes and desulfurizes the waste rubber fed into the heating and crushing gap and forcibly discharges it. The ridges 13 are inclined with respect to the axial direction of the second crushing member 7, as shown in FIG. The inclination angle β determines the discharge state of the waste rubber crushed in the heating crushing gap. If the inclination angle β is large, the waste rubber in the heating and grinding gap is promptly discharged. Therefore, the crushing capacity of the waste rubber is increased. On the contrary, when the inclination angle β is small, the passing time of the waste rubber in the heating and grinding gap becomes long. Therefore, the waste rubber can be sufficiently crushed and desulfurized at a high temperature. The inclination angle of the ridge 13 is adjusted to an optimum value in consideration of the processing ability of waste rubber and the state of pulverization and desulfurization. The inclination angle is usually 1 to 15 degrees,
It is preferably designed in the range of 2 to 10 degrees. 4 ridges 1
The number 3 can be reduced or increased depending on the material and shape of the waste rubber.

The inclined ridges 13 rotate the second crushing member 7 to forcibly discharge the waste rubber from the heating crushing gap 3. Therefore, as shown in FIG. 4, the inclination direction of the ridges 13 is designed to forcibly discharge the waste rubber from the heating and crushing gap when the second crushing member 7 rotates.

Further, an enlarged view of a cross section of the ridge 13 is shown in FIG.
Is shown in. The ridge 13 shown in this figure has a front side surface 13A.
And the rear side surface 13B have different slopes, the front side surface 13A is an inclined surface with a gentle upward slope, and the rear side surface 13B is the front side surface 13A.
It has a steep descending slope.

The front side surface 13A has a curved surface shape with a steep gradient. Preferably, the front side surface 13A of the ridge
Has a curved surface with a predetermined radius of curvature. The length L of the inclined portion of the front side surface 13A of the ridge is adjusted to an optimum value in consideration of the height H of the ridge. Further, the height H of the ridge gradually decreases toward the tip of the second crushing member 7, but is designed to be 3 to 40 mm at the highest portion.

The tip of the second crushing member 7 has a screw shaft 5
Approach the tip of. The rear end of the second crushing member 7 is rotatably supported by the supply cylinder 4 via a bearing. The tip of the second crushing member can be connected to the screw shaft. In this case, the tip of the screw shaft 5 is inserted into the tip of the second crushing member as shown by the chain line in the figure.
The second crushing member 7 is a motor 1 different from the screw shaft 5.
It is rotationally driven at 5. Second crushing member 7 and screw shaft 5
The tip of the screw shaft 5 is inserted around the center of the second crushing member 7 so that it can be rotated at a rotational speed different from the above, and is movable in the axial direction. Therefore, at the center of the second crushing member 7, there is provided a cylindrical hole into which the tip of the screw shaft 5 can be rotatably inserted.
The tip of the screw shaft 5 has a cylindrical shape that can be rotatably inserted into the hole of the second crushing member 7.

The second crushing member 7 and the screw shaft 5 are connected in a straight line. The second crushing member 7 is supported on the moving base 14 so as to be movable in the axial direction. The second crushing member 7 is moved in the axial direction by the moving table 14.
Therefore, the second crushing member 7 is supported by the moving table 14.

The movable table 14 is movably set on the base. The moving base 14 is slidably mounted in a dovetail groove (not shown) provided on the base. The dovetail groove is provided so as to extend in the axial direction of the second crushing member 7 and the screw shaft 5. The moving base 14 is a position control means (not shown).
Is moved axially by. When the second crushing member 7 is inserted into the first crushing member 9 by the moving table, the friction crushing gap 3 becomes narrow. On the contrary, when the second crushing member 7 is pulled out from the first crushing member 9 by the moving table, the friction crushing gap 3 becomes wider. The stop position of the moving table is adjusted to a position where the waste rubber can be crushed to an optimum state. When the friction crushing gap 3 is narrowed, the heating temperature of the waste rubber is increased and the rotation torque of the second crushing member 7 is increased. When the friction crushing gap 3 is widened, the heating temperature is lowered, the rotation torque of the second crushing member 7 is low, and a large amount of waste rubber can be discharged.

The crushing means shown in FIGS. 1 and 2 does not necessarily require a heating means such as a heater for the first crushing member 9 because it crushes waste rubber by self-heating. However, by equipping this part with a heater, the waste rubber can be heated, pulverized, and desulfurized more efficiently.

In the crushing apparatus shown in the above figures, two second crushing members 7 are coaxially arranged on two screw shafts 4. However, it is also possible to transfer waste rubber with a plurality of screw shafts, collect the waste rubber at one place, and rub and crush it with one second crushing member.

Further, in the crushing device shown in FIG. 6, the supply cylinder 4 is inclined at about 45 degrees with respect to the horizontal plane. A supply hopper 8 is connected to the upper side of the supply cylinder 4. The crushing device having this structure can adjust the inclination angle of the supply cylinder 4 to adjust the force for pressing the waste rubber against the screw shaft 5. When the supply cylinder 4 is brought close to horizontal, the waste rubber is pressed against the screw shaft 5 by its own weight with a strong force. On the contrary, when the supply cylinder 4 is approached vertically, the direction of the force exerted by its own weight becomes parallel to the supply cylinder 4, and the pressing force due to its own weight is weakened. When the supply cylinder 4 is horizontal and the waste rubber presses the screw shaft 5 with too much force, the waste rubber introduced into the supply hopper 8 is temporarily bitten by the screw shaft 5 and pressure-fed, and the heating and pulverizing means is used. 2 cannot be supplied in a fixed amount. For this reason, the supply cylinder 4 which is arranged to be inclined preferably forms an angle α with the horizontal plane of 20 degrees or more, preferably 30 degrees or more,
More preferably, it is adjusted to 40 degrees or more.

Further, FIG. 7 shows a waste rubber crushing and desulfurizing device in which the supplying means 1 and the first crushing member 9 are horizontally arranged and the waste rubber is transferred in the horizontal direction. This device is composed of a supply cylinder 4, a supply shaft 4, a screw shaft 6 and a rotary cutter 16 arranged in the same horizontal plane. Therefore, the supply cylinder 4 is formed in a tubular shape capable of accommodating two shafts.

The screw shaft 5 is rotatably arranged inside the supply cylinder 4. The screw shaft 5 is rotated by the motor 4 and pressure-feeds the waste rubber fed from the feed hopper 8 to the feed cylinder 4.

The rotary cutter 16 arranged in parallel with the screw shaft 5 cuts the waste rubber supplied from the supply hopper 8 into small pieces with the screw shaft 5 and sends it to the first crushing member 9 under pressure. Therefore, a plurality of ridges 17 are provided on the surface of the rotary cutter 16 so as to extend vertically, and the entire shape is processed into a spline shape. The tip edge of the ridge 17, in other words, the top edge of the mountain portion of the ridge 17 comes into contact with or is extremely close to the tip edge of the fin of the screw shaft 5, and the fin of the screw shaft 5 and the ridge 17 of the rotary cutter Cut waste rubber between.

Although not shown, the rotary cutter 16 may have a plurality of short ridges extending in the axial direction and arranged in a zigzag pattern instead of the spline shape. The rotary cutter 16 is rotated in the opposite direction with respect to the screw shaft 5 so as to sandwich the rotary cutter 16 with the screw shaft 5 to cut the waste rubber. In the volume reducing device shown in FIG. 7, the rotary cutter 16 and the screw shaft 5 are rotated in opposite directions via a gear 18.

The inner shape of the supply cylinder 4 is processed such that the fin tips of the screw shaft 5 and the ridge tip edges of the rotary cutter 16 are close to, for example, 0.1 to 5 mm. In this way, the supply cylinder 4 having the rotary cutter 16 parallel to the screw shaft 5 cuts the supplied waste rubber and pressure-feeds it to the first crushing member 9, so that a long string shape, a sheet shape, a bag shape, etc. The waste rubber can be supplied as it is, and various shapes of waste rubber can be rubbed, crushed and desulfurized efficiently in the next step. To

Further, the apparatus shown in FIG. 7 has the first crushing member.
Powder that relatively moves the crushing member and the second crushing member in the axial direction
The crushing gap adjusting means 20 is composed of a moving table and a linear moving means 19.
To do. In this device, the moving table 14 is moved in the axial direction by the linear movement means 19 . The linear motion means 19 is the servo motor 1
Pinion 1 rotated by 9C and servomotor 19C
9D, a rack 19E, and a control member 19B. The servomotor 19C is a motor that can rotate in the forward and reverse directions, is fixed to the base, and has a pinion 19D on the rotating shaft.
Is fixed. One end of the rack 19E is connected to the movable table 14 and meshes with the pinion 19D.

The linear motion means 19 of this structure is the control member 19
At B, the servo motor 19C is rotated to move the rack 19E in the axial direction, and the moving table 14 moves back and forth. The control member 19B detects the operating current of the motor 6, or directly detects the heating temperature of the waste rubber through the first crushing member 9 and the second crushing member 7, or without using these, The state of the discharged waste rubber is detected, and the moving table 14 is moved in the axial direction. When the moving table 14 inserts the second crushing member 7 into the first crushing member 9, the friction crushing gap becomes narrow and the heating temperature of the waste rubber becomes high.

[0044]

The crushing and desulfurizing device for waste rubber of the present invention is completely different from the pressurizing, crushing and kneading devices such as cracker rolls, Banbury mixers and pressure kneaders which have been used for crushing waste rubber. It has a different structure. The apparatus of the present invention is characterized in that waste rubber is pulverized and at the same time, the waste rubber can be heated by friction heat to be desulfurized. That is, the device of the present invention has a feature that crushing and desulfurization can be simultaneously performed. Furthermore, the device of the present invention does not grind waste rubber by cutting it with a knife as in conventional grinders. The waste rubber is crushed by being heated by frictional heat and ground. For this reason, the crushed waste rubber is not simply cut into small particles, but is discharged in a state ideal for reuse, that is, a state in which fine powder is collected.

Furthermore, the crushing desulfurization apparatus of the present invention has a
Even a large amount of waste rubber can be desulfurized uniformly and efficiently and in a short time.
It has the feature that it can be crushed. Therefore, the device of the present invention is
It is possible to desulfurize a large amount of waste rubber at low cost and crush it.
There are features. It is because the device of the present invention has a narrow waste rubber
By rubbing in the gap, friction heat causes self-heating and desorption.
This is because it is pulverized while being vulcanized. Waste rubber is simply small
It cannot be effectively reused just by crushing it. Waste rubber
In order to reuse effectively, it is necessary to chemically change and desulfurize.
There is a point. The desulfurization treatment of waste rubber and the pulverization treatment are completely different.
It is a process. Desulfurization treatment chemically changes waste rubber.
This is a process for releasing the crosslinked state. Desulfurization treatment is discarded
Unique, essential for effective rubber recycling
Processing. On the other hand, the grinding process is simply physically
It is a process that is merely crushed into small pieces. Crushed waste rubber
Is a process that makes it convenient to reuse. The present invention
The equipment of the equipment is desulfurization, which is a chemical treatment of waste rubber, and
By simultaneously performing the crushing process, which is a logical process,
Extremely efficient disposal of large amounts of waste rubber, and processing cost
To achieve uniform desulfurization and pulverization.
Reveal. This is the largest waste rubber processing device.
It's a pain. Use conventional equipment to reduce waste rubber
It is possible to grind and desulfurize. However
However, conventional equipment crushes with a crusher and removes with a heating device.
Since it is vulcanized, the processing cost becomes extremely high. Servant
Conventional equipment reduces processing costs and waste rubber.
It is important to have excellent properties for effective reuse of
They have contradictory characteristics and cannot satisfy both at the same time.
Yes. To sufficiently desulfurize the waste rubber, increase the heating time.
Because it needs to be combed or crushed into small pieces.
It Processing cost to achieve effective utilization of waste rubber
It is an essential requirement to reduce Especially waste rubber
Since a large amount of rubber is generated, a large amount of waste rubber is
It is important to process in a short time.

The device of the present invention is disposed of in a very unique state.
What succeeded in simultaneously crushing rubber while desulfurizing it
Is. Especially, the desulfurization process, which is a chemical process, and the physical process.
Both ideal grinding processes can be processed simultaneously under ideal conditions
It is extremely excellent. The device of the present invention comprises a first crushing unit
The second crushing is performed by providing a friction crushing gap between the material and the second crushing member.
By rotating the member, you can
This is achieved by grinding the rubs while rubbing them.
Waste rubber that is treated in this state will not be
It is strongly rubbed and self-heats due to frictional heat. Abandoned self-heating
Abandoned rubber efficiently and evenly heats the inside in an extremely short time.
To be done. Heat the waste rubber from the surface,
This is because the heating state is completely different from heating. self
The waste rubber that generates heat, when passing through the friction grinding gap,
Almost instantly, the inside is heated to high temperature while desulfurizing.
Be crushed. Thus, the pulverization desulfurization apparatus of the present invention is
Both desulfurization, which is a physical treatment, and grinding, which is a physical treatment.
Is processed in an ideal environment, and a huge amount of waste rubber is processed.
It is processed very efficiently for reuse.

Furthermore, pulverized desulfurization of waste rubber of the present invention
The device removes waste rubber of various materials at an ideal temperature.
It has the characteristic that it can be vulcanized and crushed. It is the crushing desulfurization of the present invention
The device relatively axially moves the first crushing member and the second crushing member.
The friction grinding gap to adjust the
Therefore, the heating temperature of the waste rubber can be optimized.
It This structure of crushing desulfurization equipment is used for waste rubber of various materials.
The heating temperature can be adjusted to the optimum value depending on the type of
A pole that can pulverize and desulfurize waste rubber very efficiently.
It has excellent features. This is true for this kind of device
That is extremely important. It is the waste rubber
If the temperature of sulfur and crushing is too high,
It burns out and cannot be reused effectively.
If the heating temperature during desulfurization and pulverization is too low, it is effective.
This is because desulfurization cannot be performed. Desulfurization and crushing of waste rubber
The device that can be reused effectively is used as a seed, like new rubber.
It is impossible to select and process materials of uniform type and material.
Yes. In order to effectively reuse the waste rubber of various materials,
All rubber waste can be used without selecting a specific rubber quality.
This is because it is necessary to efficiently desulfurize and pulverize the rubber.
The waste rubber pulverizing and desulfurizing apparatus of the present invention comprises a first pulverizing member and a second pulverizing member.
It is extremely important to adjust the friction grinding gap between two grinding members.
With a simple structure, it is extremely effective to remove waste rubber of various materials.
It has the feature that it can be desulfurized under optimum conditions, crushed and reused effectively.
is there.

Further, since the waste rubber pulverizing / desulfurizing apparatus of the present invention can simultaneously pulverize and desulfurize with one apparatus, the cost of the processing plant can be remarkably reduced, and the frictional heat generated during the pulverizing can be effectively used. Since it is used, running costs can be reduced and waste rubber can be crushed and desulfurized at extremely low cost.

Further, in the waste rubber crushing and desulfurizing apparatus of the present invention, the waste rubber is rubbed and crushed and desulfurized by the first crushing member and the second crushing member. It is also possible to realize the feature that processing capacity can be increased with a compact device.

[Brief description of drawings]

FIG. 1 is a sectional view of a waste rubber pulverizing and desulfurizing apparatus showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a waste rubber pulverizing and desulfurizing apparatus showing an embodiment of the present invention.

FIG. 3 is a cross-sectional view of the first crushing member and the second crushing member.

FIG. 4 is a side view of the second crushing member.

FIG. 5 is an enlarged sectional view of an essential part of the first crushing member and the second crushing member.

FIG. 6 is a sectional view of a pulverization desulfurization apparatus showing another embodiment of the present invention.

FIG. 7 is a sectional view of a pulverization desulfurization apparatus showing another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Supplying means 2 ... Heat-grinding means 3 ... Friction crushing gap 4 ... Supply cylinder 5 ... Screw shaft 6 ... Motor 7 ... Second crushing member 8 ... Supply hopper 9 ... First crushing member 10 ... Fin 11 ... Friction opening 12 ... Groove 13 ... Convex strip 14 ... Moving base 15 ... Motor 16 ... Rotary cutter 17 ... Convex strip 18 ... Gear 19 ... Direct moving means 20 ... Friction grinding gap adjusting means

Claims (1)

[Claims] 1. A means for supplying waste rubber (1), a heating and crushing means (2) for heating and crushing the waste rubber sent from the supplying means (1), and a heat value of the waste rubber supplied.
And a friction crushing gap adjusting means (20) for adjusting the heat crushing gap , and the heat crushing means (2) has a first crushing member (9) and a second crushing member (7) that rotate relatively close to each other. And a first crushing member (9) and a second crushing member (7).
A friction crushing gap (3) for crushing the waste rubber while rubbing and desulfurizing the waste rubber is provided in the gap between the second crushing member and
(7) has a large outer diameter at the tip,
The space adjusting means (20) includes a first crushing member (9) and a second crushing member.
The member (7) is moved in the axial direction relative to the friction grinding gap.
The interval (3) is adjusted, and the waste rubber supplied from the supply means (1) is rubbed by the rotating first crushing member (9) and the second crushing member (7) and heated by friction heat. A device for pulverizing and desulfurizing waste rubber, which is configured to be pulverized in a desulfurized state.