JP4540158B2 - Spherical seal device for inertia cone crusher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spherical seal device for an inertia cone crusher. More specifically, in an inertia cone crusher that crushes stone with a cone cave and a mantle attached to a cone head that rotates while being eccentric with respect to the cone cave, the cone head and the cone head can be rotated and swung. The present invention relates to a spherical seal device of an inertia cone crusher for preventing dust from entering between a spherical seat to be supported.
[0002]
[Prior art]
A conventional inertia cone crusher will be described with reference to FIG. This is provided with a substantially cylindrical shell 4 having a material charging port 1 in the upper part, a spherical seat support 2 in the middle part, and a bearing part 3 in the lower part, supported by an anti-vibration rubber 5, A cone cave 6 having an inverted conical surface is attached to the lower portion of the material inlet 1 of the shell 4, a spherical seat 7 is attached to the spherical seat support 2, and the motor 8 is connected to the lower bearing portion 3. A drive shaft 11 driven via a belt 9 and a pulley 10 is supported.
[0003]
The drive shaft 11 supports one end of a spindle shaft 12 capable of transmitting rotation and swingable, and the other end of the spindle shaft 12 is connected to the main shaft 13 so as to be capable of transmitting rotation and swingably. . An unbalance unit 14 is attached to the lower part of the main shaft 13, and a conical head 15 supported on the spherical seat 7 is attached to the upper part. A mantle 16 is attached to the upper surface of the conical head 15 so as to face the cone cave 6. ing. The conical head 15 can rotate on the spherical seat 7 and can swing along the spherical surface. Reference numeral 17 denotes a dust seal provided on the spherical seat support 2 so as to seal between the conical head 15 and the spherical seat support 2.
[0004]
The operation of the conventional inertia cone crusher configured as described above will be described with reference to FIG.
First, in the state shown in FIG. 5A, at the left end of the crushing chamber formed by the cone cave 6 and the mantle 16, the mantle 16 is rotated so that the clearance with the cone cave 6 approaches 0 mm due to the centrifugal force generated by the rotation of the unbalance unit 14. The raw stone 19 is moved and crushed, and the crushing chamber vibrates at the right end, so that the raw stone filling state becomes a high density state.
[0005]
Next, when the mantle 16 rolls to the state shown in FIG. 5 (b), the compressed and crushed product is quickly discharged by gravity and vibration at the left end of the crushing chamber. Further, when the mantle 16 rolls to the state shown in FIG. (C), the rough stone is filled at the left end of the crushing chamber, and at the right end, the high-density raw stone is placed between the mantle 16 and the corn cave 6 at the right end. Since the mantle 16 rolls so as to approach 0 mm, there is no escape space for the particles, and the particles are crushed between each other and complete interparticle crushing is performed.
[0006]
[Problems to be solved by the invention]
In the conventional inertial cone crusher, oil is supplied to the spherical seat 7 in order to prevent seizure between the spherical seat 7 and the conical head 15, but the crushed product dust does not enter there. Such dust intrusion prevention means is provided. As shown in FIG. 6, this dust intrusion preventing means has a ring-shaped protrusion 15 a made of a part of a sphere that shares the spherical curvature center of the spherical seat 7 attached to the spherical seat support 2. A dust seal 17 made of rubber and in the form of a ring that contacts the projection 15a is attached to the spherical seat support 2.
[0007]
In the above-mentioned dust intrusion prevention means in the inertia cone crusher,
(1) Since the material of the dust seal 17 is rubber, durability is poor.
(2) If there is a lot of mud or moisture in the crushed product, the rolling motion of the mantle 16 attached to the conical head 15 becomes unstable, and the dust seal 17 sealed by the elastic force of the rubber Unstable movement cannot be followed and the sealing effect is reduced.
[0008]
(3) Since the contact area between the conical head 15 and the dust seal 17 is small, the contact surface portion of the conical head 15 on the dust seal 17 is heavily worn.
(4) The dust seal is liable to crack due to the unstable movement of the conical head 15. There was a problem such as.
[0009]
In view of the above-described conventional problems, the present invention provides an inertia cone crusher for crushing stone material with a cone cave and a mantle attached to a cone head that rotates while being eccentric with respect to the cone cave. An object of the present invention is to realize a spherical seal device for an inertia cone crusher that can prevent dust from entering between a spherical seat that supports the head so that the head can rotate and swing, and that is durable.
[0010]
[Means for Solving the Problems]
The spherical seal device for an inertial cone crusher of the present invention includes a shell 4, a spherical seat support 2 provided on the shell 4, a spherical seat 7 attached to the spherical seat support 2, and the spherical seat 7 A conical head 15 that is rotationally driven while being eccentric, a mantle 16 attached to the conical head 15, and a cone cave 6 attached to the shell 4 so as to face the mantle 16. In the inertia cone crusher that crushes the rough stone between the mantle 16 and the cone cave 6 by the head 15 being rotated while being eccentric on the spherical seat 7, the spherical seat 7 attached to the spherical seat support 2 is used. A spherical metal seal member 20 made of a part of a hollow sphere sharing the spherical curvature center is provided, and the inner circumference of the spherical seal member 20 can be slid in an airtight manner on the outer circumference of the cylindrical portion of the spherical seat support 2. In Is touch, the bottom of the conical head 15, characterized in that a sealing member support means for and slidably supports hermetically the spherical sealing member 20.
[0011]
In addition, the seal member support means is attached to the seal support member mounting portion 15b provided at the lower portion of the conical head 15, and the seal support member mounting portion, and supports the spherical seal member 20 to be slidable. It is characterized by comprising a seal support member 21.
[0012]
By adopting this configuration, since the spherical seal member is made of metal, a highly durable seal device can be obtained as compared with a conventional rubber seal.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 and FIG. 2 are views for explaining an embodiment of the spherical sealing device of the inertia conical crusher of the present invention, and FIG. 1 is a longitudinal sectional view of the inertia conical crusher using the spherical sealing device of the present invention. FIG. 2 is an enlarged view of a portion A in FIG.
[0014]
In FIG. 1, reference numeral 4 denotes a substantially cylindrical shell supported by an anti-vibration rubber 5. The shell 4 has an upper portion of the shell 4, a spherical seat support 2 in the middle portion, and a bearing portion 3 in the lower portion. Are provided. An inverted conical cone cave 6 is attached to the lower part of the material inlet 1, a spherical seat 7 is attached to the spherical seat support 2, and a drive shaft 11 is rotatably attached to the bearing portion 3.
[0015]
The drive shaft 11 is connected to one end of a spindle shaft 12 that transmits rotation and can be rotated, and the other end of the spindle shaft 12 is connected to a main shaft 13 that can rotate and swing. An unbalance unit 14 is attached to the lower part of the main shaft 13, and a conical head 15 and a mantle 16 are attached to the upper part.
[0016]
The conical head 15 and the mantle 16 are rotationally driven by a spindle shaft 12 and a main shaft 13 that are rotationally driven from a motor 8 via a V belt 9 and a pulley 10. At this time, the unbalanced unit 14 rotates together with the main shaft 13 to generate a centrifugal force and tilt the main shaft. Therefore, the conical head 15 and the mantle 16 make a razor movement on the spherical seat 7, and the mantle 16 is a rough stone with the cone cave 6. Can be crushed.
[0017]
The contact surface between the conical head 15 and the spherical seat 7 is lubricated by lubrication means (not shown). The above configuration is the same as that of the conventional example described with reference to FIG. 4 , and the feature of the present invention is that a spherical surface that reliably prevents dust from entering the contact surface between the conical head 15 and the spherical seat 7 and has durability. A sealing device is provided.
[0018]
FIG. 2 is an enlarged view of a portion A in FIG. As shown in the figure, this spherical sealing device includes a metallic spherical sealing member 20 and sealing member support means provided on the conical head 15. The spherical seal member 20 has a ring shape formed of a part of a hollow sphere of a predetermined thickness sharing the spherical curvature center of the spherical seat 7, and its inner diameter is airtight on the outer periphery of the cylindrical portion of the spherical seat support 2. It can come in slidable contact.
[0019]
The seal member support means includes a seal support member mounting portion 15b provided at the lower outer periphery of the conical head 15, and a seal support member 21 mounted on the seal support member mounting portion 15b. The surfaces of the seal support member mounting portion 15 b and the seal support member 21 that are in contact with the spherical seal member 20 have the same spherical surface as the spherical seal member 20. When the spherical seal member 20 is sandwiched between the seal support member mounting portion 15b and the seal support member 21, there is a slight gap at the top and a space on the outer periphery that allows movement in the entire circumferential direction. ing.
[0020]
The operation of the present embodiment configured as described above will be described with reference to FIG. When the conical head 15 is driven to rotate the spindle shaft 12 and the main shaft 13 by a motor, centrifugal force is generated in the unbalance unit 14 attached to the main shaft 13 and acts to tilt the main shaft 13. As a result, the conical head 15 rotates while sliding eccentrically on the spherical seat 7, and the gap between the mantle 16 and the cone cave 6 can be brought close to 0 to crush the raw stone.
[0021]
At this time, even when the conical head 15 is tilted and rotated as shown in FIG. 3, the spherical seal member 20 maintains the inner diameter in contact with the spherical seat support 2 and supports the spherical seal member 20. Since the seal support member mounting portion 15b and the seal member support member 21 share the same spherical curvature center together with the spherical seal member 20, a complete sealing action can be performed.
[0022]
【The invention's effect】
According to the spherical sealing device of the inertia conical crusher of the present invention, the sealing member is formed into a metal ring shape that forms a part of a hollow sphere having the same center as the spherical curvature center of the spherical seat, and the inner periphery thereof is a spherical surface. The outer periphery of the seat support is in airtight and slidable contact, and the outer periphery is supported in an airtight and slidable manner at the lower part of the conical head. In addition, since the seal member is made of metal, the durability is high.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an inertia cone crusher to which a spherical seal device according to an embodiment of the present invention is applied.
FIG. 2 is an enlarged cross-sectional view of a part A in FIG.
FIG. 3 is a view for explaining the operation of the spherical seal device according to the embodiment of the present invention.
FIG. 4 is a cross-sectional view showing a conventional inertial cone crusher.
FIG. 5 is a diagram for explaining the operation of a conventional inertial cone crusher.
6 is an enlarged cross-sectional view of a main part of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Material inlet 2 ... Spherical seat support body 3 ... Bearing part 4 ... Shell 5 ... Anti-vibration rubber 6 ... Cone cave 7 ... Spherical seat 8 ... Motor 9 ... V belt 10 ... Pulley 11 ... Drive shaft 12 ... Spindle shaft 13 ... Main shaft 14 ... Unbalance unit 15 ... Conical head 15b ... Seal support member mounting portion 16 ... Mantle 19 ... Rough stone 20 ... Spherical seal member 21 ... Seal support member

Claims (2)

A shell (4), a spherical seat support (2) provided on the shell (4), a spherical seat (7) attached to the spherical seat support (2), and the spherical seat (7); A conical head (15) that is supported and rotationally driven while being eccentric, a mantle (16) attached to the conical head (15), and a shell (4) that faces the mantle (16) A cone cave (6), and the cone head (15) is rotationally driven while being eccentric on the spherical seat (7), thereby crushing the rough stone between the mantle (16) and the cone cave (6). In the inertia cone crusher, a spherical metal seal member (20) comprising a part of a hollow sphere sharing the spherical curvature center of the spherical seat (7) attached to the spherical seat support (2) is provided, The inner surface of the spherical seal member (20) is supported by the spherical seat. (2) A seal member support means for contacting the outer periphery of the cylindrical portion in an airtight and slidable manner and for supporting the spherical seal member (20) in an airtight and slidable manner at the lower portion of the conical head (15). A spherical seal device for an inertia conical crusher, which is provided. The seal member support means is attached to the seal support member mounting portion (15b) provided at the lower portion of the conical head (15) and the seal support member mounting portion, and slidably supports the spherical seal member (20). 2. A spherical sealing device for an inertia conical crusher according to claim 1, characterized in that it comprises a seal support member (21).

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