JP3024695U - Crusher - Google Patents

Abstract

(57) [Abstract] [Problem] Milling particle size can be easily adjusted 2
To provide an axial screw press type crusher. SOLUTION: An elongated casing (2) which communicates a supply port (a) and a discharge port, and a pair of longitudinally arranged inside the casing (2) and driven to rotate in opposite directions. Rotation axis
(3) and each of the rotating shafts (3) are respectively provided in the supply port side regions, and can convey and crush an object to be processed supplied from the supply port (a) while the rotating shafts (3) are driven. Pair of spirals (4)
And a pair of squeezing bodies that are provided in the subsequent stage of each spiral body (4) and can press, compress, and rub the object crushed by the pair of spiral bodies (4) with the inner wall of the casing (2). (6) is provided. A lid body that presses the discharge port at the end of the compression path formed between each compression body (6) and the inner wall of the casing (2) so that the discharge port becomes narrower.
(7) and pressing force adjusting means for adjusting the pressing force of the lid body
It has (8) and (9). The supply port (a) is provided with a supply device capable of supplying a constant amount of pulverized material per unit time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a crusher. More specifically, the present invention relates to a twin-screw screw press type crusher for crushing and compressing substances to be treated such as industrial waste and municipal waste.

[0002]

[Prior art]

 Various industrial wastes such as agriculture, forestry, marine products, and municipal wastes are partially used as raw materials for the production of recycled fuels, and most of them are currently incinerated or disposed of in landfills. However, in recent years, problems such as pollution cannot be ignored, and from the viewpoint of resource recycling, in order to effectively reuse these wastes, pulverization processing has been performed according to various uses.

A twin-screw screw press type pulverizer is known as a pulverizer used for such a purpose, and in particular, as a pulverizer capable of adjusting waste to an appropriate pulverized particle size according to various uses. Is disclosed in Japanese Patent Application No. 3-329964.

FIG. 2 shows a schematic plan view of a main part of a crusher disclosed in Japanese Patent Application No. 3-329964. The structure of this crusher is "an elongated casing (12) that connects the supply port (a) and the discharge port, and is arranged side by side in the longitudinal direction of the casing (12) and is driven to rotate in opposite directions. A pair of rotating shafts (13) and a supply port side region of each rotating shaft (13) are respectively provided. A pair of spiral bodies (14) capable of being conveyed and crushed, and a workpiece to be crushed by the pair of spiral bodies (14) (14) provided at the subsequent stage of each spiral body (14), and an inner wall of the casing (12). It consists of a pair of squeezing bodies (16) capable of pressurizing, compressing and rubbing with each other, and each squeezing body (16) has a length of a squeezing path formed between the squeezing bodies (16) and the inner wall of the casing (12). It is composed of a plurality of pressing member pieces (161), (162), (163), and (164) that are detachably connected to the rotating shaft (13) so that the pressure can be adjusted.

The operation of this crusher is as follows. That is, when the object to be crushed is thrown in through the supply port (a), the object to be crushed is caught between the pair of spiral bodies (14) rotating in the opposite direction, and is crushed / pressurized / compressed here. It is fed to the compressed body (16) in the casing (12). The crushed material fed by the pair of rotating spiral bodies (14) is connected to the tapered surface (1 23) located between the front half (121) and the rear half (122) of the inner wall of the casing (12) and the ohmic surface. Due to the reverse taper surface (151) on the side surface of the ring (15), it is relatively easy to enter into the space and spiral groove where the inner wall of the thick casing (12) and the press body (16) have a very small cross-sectional area. It is guided to and is strongly compressed and fed. At this time, the crushed product is squeezed and dehydrated, and further compression heat and frictional heat are generated to dry the crushed product itself, and the crushed product is crushed and abraded to a smaller particle size and passes through the squeeze body (16). To do.

Therefore, the longer the set length from the front end to the rear end of the compressed body (16), the more the compression heat and the wear heat are added, and the longer the crushing and wear time is. Since the obtained pulverized product has a smaller particle size, the combination of the pressing member pieces in the press body (16) is adjusted according to the intended pulverized particle size. Then, when the number of compression member pieces constituting the compression body (16) is reduced, a space similar to the spiral body (14) is provided in the space inside the casing (12) from the rear end of the compression body (16) to the discharge port. It is said that it is preferable to provide it according to the length of.

[0007]

[Problems to be solved by the device]

 With the above configuration, in order to adjust the crushed particle size, the pressing member pieces (161), (162), (163), (164) constituting the pressing body (16) are attached to the rotary shaft (13). It is necessary to change the number of attachments and adjust the length of the squeeze passage. Therefore, the retaining ring (17) attached to the rotary shaft (13) is removed and the pressing member pieces (161), (162), (163), (164) are removed each time the particle size is adjusted to a different value. It takes time and effort to install and remove. Further, if the spiral body is attached to the space in the casing (12) from the rear end of the compressed body (16) to the discharge port, it takes time and effort to attach and detach the spiral body of various lengths.

[0008] Therefore, it is an object to provide a twin-screw screw press type pulverizer capable of adjusting the pulverization particle size by a simpler operation.

[0009]

[Means for Solving the Problems]

 The crusher (1) of the present invention comprises an elongated casing (2) which connects the supply port (a) and the discharge port, and is arranged side by side in the longitudinal direction of the casing (2) and is driven to rotate in opposite directions. A pair of rotating shafts (3) and the supply ports (a) provided in the supply port side regions of the rotating shafts (3) respectively, and are supplied from the supply port (a) when the rotating shafts (3) are driven. A pair of spiral bodies (4) capable of transporting and crushing objects, and a pair of spiral bodies (4) that are provided in the subsequent stage, and the object to be crushed by the pair of spiral bodies (4) is used for the inner wall of the casing (2). A pair of squeezing bodies (6) capable of pressurizing, compressing, and rubbing with each other are provided, and the discharge port at the end of the squeezing passage formed between each squeezing body (6) and the inner wall of the casing (2) is provided. It is characterized by having a lid body (7) for pushing the discharge port so as to be narrow, and pushing force adjusting means (8), (9) for adjusting the pushing force of the lid body. .

Further, in the above description, the number of the lids (7) is two, and each of the lids (7) has a through hole for allowing the turning shaft (3) to pass therethrough in the central portion, and each turning shaft (3) Is attached so as to be movable in the axial direction, and the pressing force adjusting means is a pressing force adjusting body mounting portion with an outer periphery formed on a portion protruding from the discharge port of each rotating shaft (3). (31), a pressing force adjusting body (8) screwed to the pressing force adjusting body mounting portion (31), and arranged between the pressing force adjusting body (8) and the lid body (7). It is characterized by comprising a spring (9) for pressing the lid (7) against the discharge port.

Further, in addition to the above, it is characterized in that a supply device capable of charging a constant amount of the pulverized material per unit time to the supply port (a) is provided.

[0012]

Embodiments

 FIG. 1 is a schematic plan view of an essential part of an embodiment of the crusher of the present invention. In the figure, the crusher (1) is horizontally installed with a substantially cocoon-shaped cross section, and an elongated casing (2) whose front end communicates with the supply port (a) and whose rear end communicates with a discharge port (not shown), A rotating shaft (3) that is axially supported by two bearings (A) and (B) installed outside the casing (2) and is inserted in a pair in the longitudinal direction inside the casing (2). , A pair of spiral bodies (4) fitted in the front half of the casing (2) of each rotating shaft (3) and a pair of ohmic bodies fitted in contact with the rear end surface of each spiral body (4). A ring (5), a pair of squeezing bodies (6) fitted so as to contact the rear end of each O-ring (5), and a squeezing path formed between the squeezing bodies (6) and the inner wall of the casing. The lid (7) that abuts the discharge port that is the terminal end, the pressing force adjusting means (8) and (9) that adjust the pressing force with which the cover (7) presses the discharge port, and one rotating shaft It is connected to (3) and drives this rotating shaft (3) at a predetermined rotation speed. It is composed primarily of the illustrated without drive system.

The casing (2) is configured such that the rear half (22) is thicker than the front half (21), and the thin half (21) to the thick rear half (22) is formed. The wall is formed with a tapered surface (23). The O-ring (5) is located at a position corresponding to the tapered surface (23), and the side surface of the O-ring (5) is formed as an inverse tapered surface (51). As a result, strong compression feeding to a narrow gap formed by the inner wall of the latter half portion (22) of the casing (2) and the side surface of the body of the compression body (6) is relatively smoothly performed. A plurality of spiral grooves (not shown) are provided on the side surface of the compressed body (6).

The rotary shaft (3) connected to the drive system transmits the rotary drive to the other rotary shaft (3) in the bearing portion (A) by a gear (not shown), whereby a pair of these pair of rotary shafts (3) is connected. The rotating shaft (3) is configured to be rotationally driven in a facing direction in which it is engaged. The spiral body (4), the O-ring (5), and the compression body (6) are all configured to be fixed to the rotation shaft (3).

Each lid (7) has a through hole for passing through the rotary shaft at the center, and is attached to each rotary shaft so as to be movable in the axial direction. A pressing force adjusting body mounting part (31) with a thread on the outer periphery is formed on the part of each rotating shaft protruding from the outlet of the casing, and the pressing force adjusting body mounting part (31) is The pressing force adjusting body (8) is screwed. Further, between the pressing force adjusting body (8) and the lid body (7), there is provided a panel (9) for pushing the lid body (7) to the discharge port.

The shape of the lid (7) may be such that the outlet is completely covered, but in the present embodiment, the diameter of the lid is set outside the outlet so that a slight gap is opened. It should be slightly smaller than the diameter of the inner wall of the casing. In this case, since the lid body (7) does not come into contact with the inner wall of the casing, the discharge port side of the lid body (7) comes into contact with the squeeze body (6) when the crushed material is not pushed out from the squeezing passage as described later. It will be. Also, when the lid (7) is pushed by the crushed material pushed out from the squeezing path and the space between the discharge port and the lid (7) is spread, the crushed material is easily discharged. The periphery of the body (7) was chamfered (the diameter was reduced toward the outlet) so that the basic shape of the lid body (7) was a thin truncated cone.

The basic crushing operation is the same as that of the conventional crusher except for the mechanism for adjusting the crushed particle size. That is, when the object to be crushed is thrown in through the supply port (a), the object to be crushed is caught between the pair of spiral bodies (4) rotating in the opposite direction, and is crushed, pressurized and compressed here. At the same time, it is fed to the compressed body (6) in the casing (2). The crushed material fed by the pair of rotating spiral bodies (14) is combined with the tapered surface (23) located between the front half (21) and the rear half (22) of the inner wall of the casing (2) and the ohmic surface. Due to the reverse taper surface (51) on the side surface of the ring (5), it is relatively easy to enter the squeeze passage where the inner wall of the thick casing (2) and the squeeze body (6) have a very small cross-sectional area. It is guided and sent by strong compression.

At this time, the crushed product is squeezed and dehydrated, and further compression heat and frictional heat are generated to dry the crushed product itself, and the crushed product is crushed and abraded to a smaller particle size to pass through the compression passage. To do.

What is different from the conventional one is a means for adjusting the crushed particle size, and conventionally, the length of the pressing body (6) (the length of the pressing passage) was changed to adjust the pressing amount. In the present invention, the amount of crushed material discharged from the discharge port at the end of the squeeze passage is limited by changing the pressing force of the lid (7) to adjust the time of staying in the squeeze passage.

The crushed material from the squeeze passage is discharged from the gap between the discharge port and the lid body (7) pressing it, and at the same time, the crushed material is pushed out of the discharge port by pressing the lid body (7). The lid (7) is pushed against the pressure to the pressing force adjusting body (8) against the pressure, and the gap between the discharge port and the lid (7) is widened to be discharged.

In order to reduce the particle size of the crushed material, it is only necessary to tighten the pressing force adjusting body (8) so as to approach the discharge port. As a result, the distance between the pressing force adjusting body (8) and the lid body (7) is shortened, and the spring (9) arranged therebetween is shortened accordingly. Then, the force of the expansion of the vane (9) becomes strong, and the force of the lid (7) pressing the discharge port becomes large, and the crushed material is difficult to be discharged from the discharge port. Then, the pulverized material will remain in the pulverizer (1) for a longer time, and will be pulverized and abraded to a smaller particle size.

On the contrary, when it is desired to increase the particle size of the pulverized material, the pressing force adjusting body (8) is loosened away from the discharge port to reduce the pressing force of the lid body (7) and It should be done so that the crushed material is easily discharged.

Although not shown in the figure, the force for pushing the lid (7) when the pulverized product is about to come out of the discharge port depends on the input amount of the pulverized product, so the unit time to the supply port (a) is It is preferable to equip the supply port (a) with a charging device that keeps the amount of the ground material to be ground constant, because the ground particle size is easily stabilized.

Since the crushed particle size can be adjusted by changing the screwing amount of the pressing force adjusting body (8) without changing the length of the pressing body (6), the adjustment work becomes extremely easy. Moreover, since it is not necessary to prepare a plurality of pressing member pieces or spirals as replacement parts as in the conventional case, the number of parts can be reduced. Furthermore, since the squeezing path can be shortened, the device can be downsized.

[0025]

[Effect of device]

 As described above, the present invention has made it possible to provide a twin-screw screw press type crusher capable of easily adjusting the crushed particle size.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an essential part of an example of a crusher of the present invention.

FIG. 2 is a schematic plan view of an essential part of an example of a conventional crusher.

[Explanation of symbols]

 (1) Crusher (2) Casing (3) Rotating shaft (4) Spiral body (5) O-ring (6) Compressor body (7) Lid body (8) Pressing force adjusting body (9) Spring

Claims (3)

[Scope of utility model registration request] 1. An elongated casing that connects a supply port and a discharge port, and is arranged side by side in the longitudinal direction in the casing.
In addition, a pair of rotating shafts that are driven to rotate in the opposite direction and the supply port side regions of the rotating shafts are respectively provided to convey and crush the object to be processed supplied from the supply ports in the driving state of each rotating shaft. A pair of spiral bodies, and a pair of squeezing bodies that are provided in the subsequent stage of each spiral body and can press, compress, and rub the object crushed by the pair of spiral bodies with the inner wall of the casing, A lid body that presses the discharge port at the end of the compression passage formed between each of the compression bodies and the inner wall of the casing so that the discharge port becomes narrower, and a pressing force adjusting means for adjusting the pressing force of the lid body. A crusher characterized by having. 2. An elongated casing that connects the supply port and the discharge port, and is provided side by side in the longitudinal direction in the casing.
In addition, a pair of rotating shafts that are driven to rotate in the opposite direction and the supply port side regions of the rotating shafts are respectively provided to convey and crush the object to be processed supplied from the supply ports in the driving state of each rotating shaft. A pair of spiral bodies, and a pair of squeezing bodies that are provided in the subsequent stage of each spiral body and can press, compress, and rub the object crushed by the pair of spiral bodies with the inner wall of the casing, Pressing the discharge port at the end of the compression path formed between each of the above-mentioned compressed bodies and the inner wall of the casing so that the discharge port becomes narrow 2
A crusher having a sheet of lid and a pressing force adjusting means for adjusting the pressing force of the lid, each lid having a through hole for passing through a rotary shaft at the center thereof. , Is attached movably in the axial direction of each rotating shaft, and the pressing force adjusting means is provided with a pressing force adjusting body mounting on the outer periphery formed in a portion protruding from the discharge port of each rotating shaft. Section, a pressing force adjusting body screwed to the pressing force adjusting body mounting portion, and a spring arranged between the pressing force adjusting body and the lid body to press the lid body toward the discharge port. A crusher characterized by. 3. The crusher according to claim 1, further comprising a supply device capable of charging a constant amount of the pulverized material per unit time into the supply port.