JPH0244584B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a crusher suitably used for crushing materials to be crushed such as resin materials for recycling. Regarding type crusher.

BACKGROUND TECHNOLOGY Conventionally known crushers of this type have a plurality of circular cutters with grooves installed on a horizontal axis, arranged one above the other, and each of the circular cutters centered on the horizontal axis. The structure is such that the sandwiched resin material is cut and destroyed by passing comb-shaped fixed blades that mesh with these circular cutters while rotating.

Fig. 7 is a vertical cross section showing a crusher having such a structure, where 100 is an upper rotary blade forming a circular cutter, and 101 is an upper fixed blade having a comb-shaped fixed blade that engages with the groove of the rotary blade. Comb blades, 102 is a middle rotating blade, 103 is a middle fixed comb blade, 104 is a lower rotating blade, and 105 is a lower fixed comb blade.
It is a so-called three-stage crushing mechanism in which rough crushing is performed by a middle rotary blade 102 and a fixed comb blade 103, and final crushing is performed by a rotary blade 104 and a fixed comb blade 105 in the lower stage.

[Problem that the invention seeks to solve]

However, in a crusher with the above structure, multiple large circular cutters are rotated horizontally at the same time to crush the material, which takes up a lot of space to install, makes a lot of noise, and is difficult to disassemble. From replacing the screen and adjusting the crushing blade,
Maintenance work such as cleaning the crushing room is becoming difficult.

[Means to solve the problem]

The present invention was developed in view of the above circumstances, and aims to provide a vertical low-speed rotary crusher made of resin material that does not take up much space, has low noise, and is easy to maintain, clean, and inspect. This is the purpose. In order to achieve this purpose,
The proposed invention has an entrainment breaker having a breaking piece, a rotary blade blade having vertical blade blades formed at both ends of a horizontal blade part, rotatably provided in the center, and a pair of fixed blades on the inner circumferential wall thereof. A grinding chamber is arranged opposite to each other and is divided vertically into two by a hinge, and the grinding chamber is provided below the grinding chamber, and has an opening at the top and a discharge port at the bottom.
It is equipped with a lower casing for accommodating a plurality of crushing units stacked one above the other and a crushing discharge unit. It is fixed to a vertical shaft that is connected to the rotating shaft of the installed motor and protrudes into the grinding chamber through the lower casing, and each of the plurality of grinding units housed in the lower casing has a blade section. Below a ring-shaped fixed blade with two projecting pieces extending from the formed center,
A rotating screen plate having sieve holes for sieving off the crushed resin material and a cylindrical spacer housing a screw-type rotary blade are disposed, and each of the above-mentioned rotating screen plate and screw-type rotary blade is arranged. The spacer is fixed to the vertical shaft in the same manner as the spacer disposed in the gap between the two protrusions of the ring-shaped fixed blade, and the sieve holes of the rotating screen plate of each of the crushing units are arranged downward in sequence. The crushing and discharging unit is arranged further below the lowest crushing unit among the plurality of crushing units, and has two projecting pieces extending from the center of the blade portion. a rotating screen formed with small holes for sieving out the resin material; and a sweeper for discharging the crushed resin material from the discharge port of the lower casing below the ring-shaped fixed blade; The plate is fixed to the vertical shaft in the same manner as the spacer placed in the gap between the two protrusions of the ring-shaped fixed blade, and is rotated at the vertical axis of 20 RPM to 60 RPM. .

[Effect]

According to the crusher of the present invention, when the motor 1 is driven to rotate and the vertical shaft 2 is rotated, the breaker 5 and the rotor blades 6 in the crushing chamber 4 are rotated, and at this time, the breaker 5 and the rotary blade blade 6 in the crushing chamber 4 are rotated. The rotating screen plates 9, 12 and the screw type rotary blades 10, 13 rotate, and at the same time the rotating screen plate 15 in the crushing and discharging unit B3 rotates.
The sweeper 20 rotates as the sweeper 20 rotates.

Therefore, if a piece of resin material such as a sprue or a runner is introduced through the upper opening 4a of the crushing chamber 4, the resin material piece is introduced into the crushing chamber 4 by the entrainment breaker 5, and the piece of resin material is introduced into the crushing chamber 4 by the rotary blade 6 and the pair of fixed blades. 8 and the ring-shaped fixed blade 7 on the first stage surface in the lower casing 19 cooperate to perform destructive cutting.

The resin material destructively cut in this way is transported to the first stage crushing unit B in the lower casing 19.
Passing through the sieve holes 9a of the rotating screen plate 9 of No. 1,
It enters the empty space of the crushing unit B1 formed by the base part 91 of the rotating screen plate 9, and the screw-type rotary blade 10 further below cooperates with the ring-shaped fixed blade 11 of the second-stage crushing unit B2. After being crushed by the work, it passes through the sieve hole 12a of the rotating screen plate 12 of the second-stage crushing unit B2, enters the cavity of the second-stage crushing unit B2, and then passes through the screw mold located below. After being crushed by the cooperation between the rotary blade 13 and the ring-shaped fixed blade 14 of the crushing and discharging unit B3, it passes through the sieve hole 15a of the rotating screen plate 15 in the crushing and discharging unit B3, and finally is sent to the crushing and discharging unit B3. As the rotary screen plate 15 inside rotates, it is scraped out by the sweeper 20 and discharged from the discharge port 19a of the lower casing 19. Furthermore, according to the crusher of the present invention, if the knobs 41, 41 of the crushing chamber 4 are unscrewed, the hinge parts 42, 42 can be used to split the crushing chamber 4 into two parts in the vertical direction. The fixed blade installed on the inner wall of the crushing chamber can be removed.

Furthermore, both the crushing unit and the crushing discharge unit housed in the lower casing 19 have rotary crushing blades fixed to the vertical shaft, and have a structure in which cylindrical spacers are piled up in a multi-stage configuration, so that they are not fixed to the vertical shaft. If you remove the rotary crushing blade from the vertical shaft,
Since it can be easily disassembled sequentially from the top, maintenance such as replacing and adjusting the rotating and fixed crushing blades, replacing the rotating screen plate, etc., and cleaning can be performed extremely easily.

〔Example〕

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

FIG. 1 is a vertical cross-sectional structural diagram of the main parts of the crusher A of the present invention,
FIG. 2 is an elevational view, and FIGS. 4 and 5 are half-cut sectional views of the portion shown in FIG. 1.

As shown in the figure, the crusher A of the present invention has a base 3
A sprocket 21 provided on the rotating shaft 1a of the geared motor 1 provided at 0 is connected via a roller chain 3 to a sprocket 22 fixedly provided at the bottom of the vertical shaft 2, so that the vertical shaft 2 is rotated at a low speed, for example 60 RPM~
It is designed to rotate at around 20 RPM.
The vertical shaft 2 passes through a lower casing 19, which will be described later, from the base 30, and has its tip protruding into the crushing chamber 4.

The structure of the crusher A of the present invention will be explained sequentially from above.A crusher chamber 4 is provided at the top of the crusher A with an opening 4a at the top for charging resin material pieces such as sprues and runners. Inside the crushing chamber 4, there is a catch-up breaker 5 having inclined destruction pieces 5a, 5a, and a rotary blade 6 having vertical blade blades 6a, 6a formed at both ends of two horizontal blade parts 6b, 6b.
is fixed to the upper end of the vertical shaft 2.

That is, the entrainment breaker 5 is screwed onto the upper end of the vertical shaft 2, and below it, a fitting hole 6c formed in the center of the rotary blade blade 6 is provided at the fitting portion 2a of the vertical shaft 2 described above.
It is fixed to.

Further, on the inner peripheral wall of the crushing chamber 4, a pair of fixed blades 8, 8 are provided opposite to the outer periphery of the rotary blade blade 6. The gap between the rotary blade blade 6 and the rotary blade blade 6 can be adjusted by moving the screw fixing position inside the crushing chamber 4 according to the size of the material to be crushed. .

The grinding chamber 4 has two knobs 41 and 4 provided on the outside.
1 (see Fig. 2) can be separated into two parts by a hinge part 42, and below the lower casing 1 is opened at the top.
A plurality of crushing units B1, B2 and a crushing discharge unit B3 are housed in the lower casing 19, stacked one above the other so that they can be disassembled.

Each of the plurality of crushing units B1 and B2 housed in the lower casing 19 includes a ring-shaped fixed blade 7 and 11 having two projecting pieces extending toward the center forming a blade portion, and a rotating screen to be described later. Board 9,1
2 and a cylindrical spacer 1 that accommodates screw-type two-blade rotary blades 10 and 13 and has an open top and bottom.
6 and 17 are stacked one above the other so that they can be disassembled from each other.

Taking the first stage B1 as an example, the crushing unit is as follows:
The ring-shaped fixed blade 7 is stacked as it is on the cylindrical spacer 16 so that the vertical shaft 2 penetrates, and the gap between the two protrusions 7b, 7b of the ring-shaped fixed blade 7 is formed to form blade parts 7c, 7c. A spacer 23 is disposed in which the fitting hole 23a formed in the center is fitted into the fitting part 2a of the vertical shaft 2 and fixed. Below the spacer 23, a rotating screen plate 9 is mounted as a screw-type 2 The rotary screen plate 9 and the screw-type two-blade rotary blade 10 are arranged so as to be housed in a cylindrical spacer 16 together with the single-blade rotary blade 10, and have a base portion 9 formed below.
Fitting holes 91a and 10a formed in the center of each
The above-described fitting portion 2a of the vertical shaft 2 is fitted into and fixed to the fitting portion 2a.

Here, the spacer 23 defines a vertical gap between the rotary blade blade 6 and the ring-shaped fixed blade 7.

In the illustrated example, such a crushing unit has a two-stage configuration, and a crushing discharge unit B3 is arranged below the lowest crushing unit, and this crushing discharge unit B3 has a ring. Swivers 20, 20 are formed below the shaped fixed blade 14 (not shown in FIG. 6, see FIG. 1).
It has a structure in which a rotating screen plate 15 is accommodated, and a notch 18b is provided at a location corresponding to the discharge port 19a of the lower casing 19 of the cylindrical spacer 18, through which the material scraped by the sweaver 20 is discharged. is formed.

Note that the cylindrical spacers 16, 1 constituting the crushing units B1, B2 and the crushing and discharging unit B3
Fitting vertical grooves 16a, 17 are provided on the outer peripheral surfaces of 7 and 18.
a, 18a are formed so that the unit can be positioned and fixed by fitting into a convex portion (not shown) provided on the inner surface of the casing 19.

The rotary screen plates 9 and 12 constituting each of the crushing units B1 and B2 have sieve holes 9a and 9a for sieving the crushed resin material into the crushing unit below.
12a, and a long hole 9b whose opening width is smaller than the hole diameter of these sieve holes 9a and 12a, but whose opening length is larger.
(The crushing unit B2 is not shown), and the width is smaller than the sieve holes 9a, 12a of the respective crushing units B1, B2, and the length is larger, so that the pulverized particles cannot pass through the sieve holes 9a, 12a. The structure is such that the broken pieces of resin material can be passed through the crushing unit in the lower stage.

In addition, in the embodiment, inside the lower casing 9,
Although the crushing unit equipped with a ring-shaped fixed blade, a rotating screen plate, and a screw-type two-blade rotary blade is housed in an upper and lower two-stage configuration, the number of crushing units may be increased as necessary.

According to the crusher of the present invention having the above structure,
If the motor 1 is driven to rotate and the vertical shaft 2 is rotated,
The breaker 5 and rotor blades 6 in the crushing chamber 4 rotate,
At this time, the rotating screen plates 9, 12 and screw type rotary blades 10, 1 in each crushing unit B1, B2
At the same time, the sweeper 20 rotates as the rotating screen plate 15 in the crushing and discharging unit B3 rotates.

Therefore, if a piece of resin material such as a sprue or a runner is introduced through the upper opening 4a of the crushing chamber 4, the resin material piece is introduced into the crushing chamber 4 by the entrainment breaker 5, and the piece of resin material is introduced into the crushing chamber 4 by the rotary blade 6 and the pair of fixed blades. 8 and the ring-shaped fixed blade 7 on the first stage surface in the lower casing 19 cooperate to perform destructive cutting.

The resin material destructively cut in this way is transported to the first stage crushing unit B in the lower casing 19.
Passing through the sieve holes 9a of the rotating screen plate 9 of No. 1,
It enters the empty space of the crushing unit B1 formed by the base part 91 of the rotating screen plate 9, and the screw-type rotary blade 10 further below cooperates with the ring-shaped fixed blade 11 of the second-stage crushing unit B2. After being crushed by the work, it passes through the sieve hole 12a of the rotating screen plate 12 of the second-stage crushing unit B2, enters the cavity of the second-stage crushing unit B2, and then passes through the screw mold located below. After being crushed by the cooperation between the rotary blade 13 and the ring-shaped fixed blade 14 of the crushing and discharging unit B3, it passes through the sieve hole 15a of the rotary screen plate 15 in the crushing and discharging unit B3, and finally enters the crushing unit B3. As the rotating screen plate 15 rotates, it is scraped out by the sweeper 20 and discharged from the discharge port 19a of the lower casing 19.

In the crusher of the present invention, the vertical shaft rotating crushing blade rotates at a low speed, and the resin material pieces are cut and crushed by the cooperation with the fixed blade, so it is more efficient than conventional crushers that rotate at high speed. Therefore, it does not generate dust and noise can be suppressed.

Such a crusher of the present invention can crush a resin material having a size of 200 mm to about 6 mm, and can be fully put to practical use as a crusher for resin materials.

〔Effect of the invention〕

In the crusher of the present invention, the rotary crushing blade attached to the vertical axis rotates at a low speed of 60 RPM to 20 RPM, so resin materials can be crushed without noise and without creating dust, which will not worsen environmental conditions. do not have.

In addition, the crushing chamber can be divided into two by the hinge part that crushes and cuts the resin material pieces while introducing them, and the lower casing can be disassembled from the top in order from the multiple crushing units and crushing discharge unit, so the rotary crushing blades, screens, etc. It is easy to replace and convenient for maintenance and inspection.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional structural diagram of main parts of the crusher of the present invention,
Figure 2 is a plan view, Figure 3 is an elevation view, Figure 4 is a first view.
Fig. 5 is a half-cut sectional view of the - line part in Fig. 1, Fig. 6 is an exploded perspective view showing the structure of the crushing unit, and Fig. 7 is a conventionally known pulverizer. FIG. (Explanation of symbols) A...Crusher of the present invention, B
1, B2...Crushing unit, B3...Crushing discharge unit, 4...Crushing chamber, 5...Involvement breaker, 6...Rotary blade blade, 7, 11, 14...Ring-shaped fixed blade, 9, 12, 15... Rotating screen plate, 10, 13... Screw type rotary blade, 16,
17, 18...Cylindrical spacer, 20...Sweeper.

Claims (1)

[Scope of Claims] 1. An entrainment breaker having a breaking piece and a rotary blade blade having vertical blade blades formed at both ends of a horizontal blade part are rotatably provided in the center, and a pair of fixed blades are provided on the inner circumferential wall of the rotary blade blade. A grinding chamber is arranged opposite to each other and is divided vertically into two by a hinge, and the grinding chamber is provided below the grinding chamber, and has an opening at the top and a discharge port at the bottom.
It is equipped with a lower casing for accommodating a plurality of crushing units stacked one above the other and a crushing discharge unit. It is fixed to a vertical shaft that is connected to the rotating shaft of the installed motor and protrudes into the grinding chamber through the lower casing, and each of the plurality of grinding units housed in the lower casing has a blade section. Below a ring-shaped fixed blade with two projecting pieces extending from the formed center,
A rotating screen plate having sieve holes for sieving off the crushed resin material and a cylindrical spacer housing a screw-type rotary blade are disposed, and each of the above-mentioned rotating screen plate and screw-type rotary blade is arranged. The spacer is arranged in the gap between the two projecting pieces of the ring-shaped fixed blade, and is fixed to the vertical shaft, and the sieve holes of the rotating screen plate of each of the crushing units are arranged downward in sequence. The crushing and discharging unit is arranged further below the lowest crushing unit among the plurality of crushing units, and has two projecting pieces extending from the center forming the blade part. and a sweeper for discharging the crushed resin material by the discharge port of the lower casing below the ring-shaped fixed blade, and a small hole for sieving out the resin material. The rotating screen plate is fixed to the vertical shaft in the same manner as the spacer placed in the gap between the two protrusions of the ring-shaped fixed blade, and the vertical shaft rotates at a rotation speed of 20 RPM to 60 RPM. A vertical low-speed rotary crusher for resin materials, characterized by having a rotationally driven structure.