JPH0551449U - Cylindrical crusher - Google Patents

Abstract

(57) [Summary] [Purpose] An object of the present invention is to provide a cylindrical crusher in which the crushing medium does not fly out of the discharge port even when the rotary cylinder is rotated. [Structure] Side walls 4 are provided at both ends of a rotary cylinder 1 in which a large number of grinding media 2a are installed, a raw material supply port (not shown) is provided at one side wall (not shown), and a ground product is provided at the other side wall 4. The premise is a cylindrical crusher in which the discharge ports 6 are formed. Then, inside the rotary cylinder 1, in the vicinity of the side wall 4 on the crushed material discharge port 6 side, the crushed material discharge port 6 is closed while forming a predetermined gap between the side wall 4 and the cylindrical body inner wall. Such a liner plate 7 is arranged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is a crusher used in a sand maker, that is, a raw material is put into a rotating cylinder containing a crushing medium, and the raw material is crushed by impact, friction, etc. of the crushing medium while rotating at an appropriate speed. The present invention relates to an improved technique for a cylindrical crusher.

[0002]

[Prior Art]

 Conventionally, a cylindrical crusher used in a sand maker or the like puts the raw material in a rotating cylinder containing a crushing medium such as a steel rod or a ball, and rotates the cylinder at an appropriate speed. The material is crushed by the impact and friction of the crushing medium.

Focusing on the raw material supply / pulverized material discharge mechanism of such a cylindrical pulverizer, the structure is such that the flow from the raw material to the pulverized material is the same as the axial direction of the cylinder, that is, as shown in FIG. A general-purpose structure is one in which side walls 3 and 4 are provided at both ends of the rotary cylinder 1, a raw material supply port 5 is formed at one side wall 3 and a crushed material discharge port 6 is formed at the other side wall 4. ing.

However, in the crusher having such a structure, the rods and balls which are the crushing medium 2 fly out from the discharge port 6 together with the crushed material during the rotation of the rotary cylinder 1, and the crushing operation There was a problem that efficiency deteriorated.

By the way, according to the technology of the sand making machine proposed in Japanese Patent Publication No. 54-40768 and put into practical use, the above problems can be solved at once. That is, as shown in FIG. 4, in this sand maker, the rotary cylinder 1 rotating on the driving rubber tires 13 is removed by inserting the clasp 15 under the machine frame 14 on the discharge port 6 side. The outlet 6 side is slightly inclined so as to be higher. According to such a configuration, the crushing medium 2 (here, the rod) is discharged from the outlet 6 even if the rotary cylinder 1 is rotated due to the inclination. It will not jump out of.

[0006]

[Problems to be solved by the device]

 On the other hand, however, in the sand making machine as described above, since the rotary cylinder 1 is inclined, the weight of the rotary cylinder 1 and the load due to its rotation are driven by the rubber tires 13 and the machine frame 14 that support it. However, the support members such as the base 16 are not evenly applied to each support member, which causes problems in that each support member is overloaded and often fails, and the service life is shortened.

Accordingly, there has been a long-awaited demand for a crusher that does not cause the crushing medium to jump out of the discharge port even in a horizontal state without inclining the rotary cylinder.

The present invention was devised in view of the above points of the prior art. Even if the rotary cylinder is rotated, the grinding medium does not jump out from the discharge port, and various operational effects are obtained. It is intended to provide the obtained cylindrical crusher.

[0009]

[Means for Solving the Problems]

 Therefore, according to the first aspect of the invention, that is, the first aspect of the present invention, side walls are provided at both ends of a rotary cylinder in which a large number of grinding media are installed, a raw material supply port is provided at one side wall, and a side wall is provided at the other side. In the cylindrical pulverizer in which the crushed material discharge ports are formed respectively, a predetermined gap is formed between the side wall and the cylinder inner wall in the rotary cylinder in the vicinity of the crushed material discharge port side wall. A liner plate for closing the crushed material discharge port is provided.

Further, the invention according to claim 2, that is, the second invention of the present application, is provided with side walls at both ends of a rotary cylinder in which a large number of grinding media are installed, and a raw material supply port is provided at one side wall of the rotary cylinder, and a side wall of the other end is provided. In a cylindrical crusher in which a crushed material discharge port is formed on each side wall, a liner plate that closes the crushed material discharge port is provided on the crushed material discharge port side wall in the rotating body. The liner plate is provided with small holes for passing the crushed material.

Here, disposing the liner plate so as to block the crushed material discharge port means disposing the liner plate so as to block the flow of the crushed material directly to the discharge port. As long as it blocks the outflow of water, the liner plate may be used to block the entire discharge port, or a part of it.

[0012]

[Action]

 In the first invention of the present application, a liner plate for closing the discharge port is provided near the discharge port side wall of the rotary cylinder. For this reason, even if the crushing medium is about to jump out by rotating the rotary cylinder, it is blocked by the liner plate, so that it can be completely prevented from jumping out from the discharge port.

A gap is formed between the side wall and the inner wall of the cylinder and the liner plate, and the crushed material passes through the gap and is discharged from the discharge port. Therefore, compared with the case where no liner plate is provided, the residence time of the pulverized material becomes longer and the pulverizing ability is excellent. Further, the crushing ability can be adjusted by changing the gap.

On the other hand, also in the second invention of the present application, since the liner plate is arranged so as to close the discharge port as in the first invention, the crushing of the grinding medium is completely blocked by the liner plate. Further, in the second invention, the liner plate provided is provided with a small hole for passing the crushed product, and the crushed product passes through the small hole and is discharged from the discharge port. Therefore, the crushing ability can be adjusted by changing the number and size of the small holes to be drilled.

In addition, any of the present inventions can reduce noise. That is, in the first device, the gap between the side wall and the inner wall of the cylinder and the liner plate is secured, and in the second device, the small hole formed in the liner plate is secured as the passage for the crushed material, so that the liner plate is used. As a result, it is possible to configure the entire pulverized material discharge port to be closed. In such a configuration, the noise generated in the rotary cylinder will be greatly reduced by the liner plate.

[0016]

【Example】

 A specific embodiment of the present invention will be described with reference to the drawings. The invention of the present application is not limited to the following embodiments in both the first and second inventions.

FIG. 1 shows an embodiment (hereinafter referred to as the first embodiment) of a cylindrical crusher according to the first invention, and in particular, this is a so-called wet rod mill in which a rod is used as a crushing medium for rough stones. An example in which the present invention is applied is shown in. FIG. 7A is a side sectional view showing the outlet side of the rotary cylinder, and FIG. 8B is a sectional view taken along the line AA in FIG.

In this embodiment, side walls 3 are provided at both ends of a rotary cylinder 1 in which a large number of rods 2a are installed, and a discharge port 6 is provided at the center of one end of the rotary cylinder 1 (not shown but at the center of the other end). A rough stone inlet is formed in the shell), and a shell liner 9 having a convex cross section is attached to the entire inner wall of the cylinder. Further, a liner plate 7 is disposed on the side of the outlet 6 in the rotary cylinder 1 with a predetermined distance from the side wall 3.

The liner plate 7 has a disk shape having a diameter smaller than that of the cylindrical body 1 and a diameter larger than that of the discharge port 6, and a hole for allowing a person to enter and leave is formed in a central portion thereof. There is. The lid 10 is detachably attached to the hole. Further, the liner plate 7 is attached to the side wall 3 with a plurality of supporting members 11 having a predetermined thickness and a predetermined diameter so as to face the side wall 3. As described above, in the present embodiment, the liner plate 7 is provided with a gap corresponding to the thickness of the support member 11 between the liner plate 7 and the side wall 3 and a gap corresponding to the dent of the shell liner 9 between the liner plate 7 and the side wall 3, and It is arranged so as to block 6.

FIG. 2 shows an embodiment (hereinafter referred to as a second embodiment) of a cylindrical pulverizer according to the second invention, which is also applied to a wet rod mill like the first embodiment. The figure (a) is a side sectional view showing the outlet side, and the figure (b) is a sectional view taken along the line BB in (a).

In this embodiment, the structure of the rotary cylinder 1 is exactly the same as that of the first embodiment.

In this embodiment, a disk-shaped liner plate 8 of the same size as in the first embodiment is directly attached to the side wall 3 of the rotary cylinder 1 on the discharge port 6 side so as to completely close the discharge port 6. ..

The liner plate 8 is provided with an in / out hole at the center thereof as in the case of the first embodiment, and the lid 10 is detachably attached thereto. A large number of small holes 12 having a diameter smaller than the diameter of the rod 2a are formed on the surface corresponding to the inside of the rod 6.

Next, an operation example of the first and second embodiments configured as described above will be described.

All the examples are wet rod mills as described above, and when they are operated, rough stones and water are put in through a rough stone inlet (not shown), the rotary cylinder 1 is rotated, and the rods 2a are crushed by impact and friction. I do. During the rotation of the rotary cylinder 1, the ore is mixed with water and crushed, and the crushed material 17 and water flow toward the discharge port 6 side. The rod 2a also moves to the discharge port 1 side due to these flows and the rotation of the rotary cylinder 1, but since the liner plates 7 and 8 are arranged so as to close the discharge port 6, the rod 2a moves. Will collide with the liner plates 7 and 8 and bounce back, and will never fly out of the discharge port 6.

On the other hand, the pulverized material 17 and water pass through the gap between the inner wall of the cylinder and the liner plate 7 and the gap between the side wall 3 and the liner plate 7 to reach the discharge port 6 in the first embodiment. Will be discharged. Further, in the second embodiment, the liner plate 8 is provided with a small hole 12, and the pulverized material 17 crushed into smaller pieces than the small hole 12 passes through the small hole 12 and is discharged to the discharge port 6. Will be. When replacing the rod or inspecting the inside of the rotary cylinder 1, the lid 10 at the center of the liner plates 7 and 8 may be removed in any of the embodiments, and the entrance / exit may be performed from there.

As is clear from the above operation examples, the following remarkable operational effects are recognized in these examples.

First, in both the first embodiment and the second embodiment, the liner plate is arranged so as to close the discharge port, and the liner plate can completely prevent the rod from protruding from the discharge port. ing. Furthermore, during operation, a considerable amount of noise will be generated due to the rotation of the rotary cylinder and the impact of the rod, but since the liner plate blocks the noise, the noise from the exhaust outlet side can be considerably reduced. ..

Further, in the first embodiment, the crushed material is discharged from the discharge port after passing through the gap between the liner plate and the inner wall and the side wall of the cylinder, so that it is compared with the case where it is directly discharged. In addition to the long residence time and excellent crushing ability, the crushing ability can be adjusted freely by changing the gaps.

On the other hand, in the second embodiment, the crushed material passes through the small holes formed in the liner plate and is discharged from the discharge port. Therefore, if the number and size of these small holes are changed variously, Similar to the first embodiment, the crushing ability can be freely adjusted.

[0031]

[Effect of the device]

 As described above, according to the crusher according to the first and second inventions of the present application, even if the rotating cylinder is rotated, the crushing medium does not jump out from the discharge port, and therefore the crushing work can be performed efficiently. It can be done. In particular, since it is not necessary to incline the rotary cylinder, each member of the crusher will not be overloaded, and as a result, not only each member but also the entire device will have a long service life. Further, in the present invention, the crushing ability can be freely adjusted by changing the arrangement position of the liner plate and the number and size of the small holes formed therein, and the crushing ability can be improved very easily. .. In addition, since each device has a passage to the discharge port of the crushed material, it is possible to use a liner plate to block the entire discharge port. In such a configuration, noise generated in the rotating cylinder is generated. Can be greatly reduced by the liner plate.

[Submission date] February 18, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

[0018] This example side wall is provided at both ends of the rotating cylinder 1 a large number of rods 2a are furnished, one end side wall (not shown) rough inlet to the central portion (not shown), the other end side walls 4 A discharge port 6 is provided at each central portion, and a shell liner 9 having a convex cross section is attached to the entire inner wall of the cylinder. A liner plate 7 is provided on the discharge port 6 side in the rotary cylinder 1 with a predetermined distance from the side wall 4 .

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0019

[Correction method] Change

[Correction content]

The liner plate 7 has a disk shape having a diameter smaller than that of the cylindrical body 1 and a diameter larger than that of the discharge port 6, and a hole for allowing a person to enter and leave is formed in the center thereof. There is. The lid 10 is removably attached to the hole. Further, the liner plate 7 is attached to the side wall 4 by bolts through a plurality of support members 11 having a predetermined thickness and a predetermined diameter. As described above, in the present embodiment, the liner plate 7 is provided with a gap corresponding to the thickness of the support member 11 between the liner plate 7 and the side wall 4 and a gap corresponding to the depression of the shell liner 9 between the liner plate 7 and the side wall 4, and the discharge port is formed. It is arranged so as to block 6.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

In this embodiment, a disk-shaped liner plate 8 of the same size as in the first embodiment is directly attached to the side wall 4 of the rotary cylinder 1 on the discharge port 6 side so as to completely close the discharge port 6. There is.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

The liner plate 8 has a hole for insertion and withdrawal at the center thereof as in the case of the first embodiment, and the lid 10 is detachably attached thereto. Especially, when the lid 10 is attached to the side wall 4 , the discharge port is provided. A large number of small holes 12 having a diameter smaller than that of the rod 2a are formed on the surface corresponding to the inside of the rod 6.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

On the other hand, the pulverized material 17 and the water reach the discharge port 6 through the gap between the inner wall of the cylinder and the liner plate 7 and the gap between the side wall 4 and the liner plate 7 in the first embodiment. , Discharged. In the second embodiment, the liner plate 8 is provided with a small hole 12, and the crushed material 17 crushed into smaller pieces than the small hole 12 passes through the small hole 12 and is discharged to the discharge port 6. Will be. When replacing the rod or inspecting the inside of the rotary cylinder 1, the lid 10 at the center of the liner plates 7 and 8 may be removed in any of the embodiments, and the entrance / exit may be performed from there.

[Brief description of drawings]

FIG. 1 shows an embodiment of the first invention, wherein (a) is a side sectional view showing the outlet side of the rotary cylinder, and (b) is A- of (a).
FIG.

FIG. 2 shows an embodiment of the second invention, wherein (a) is a side sectional view showing the outlet side of the rotary cylinder, and (b) is B- of (a).
It is a B sectional view.

FIG. 3 is an explanatory diagram showing a typical example of a crusher in which the flow from the raw material to the crushed product is the same as the axial direction of the cylinder.

FIG. 4 is a side view of the sand maker shown in Japanese Patent Publication No. 54-40768.

[Explanation of symbols]

 1 Rotating Cylindrical Body 2 Grinding Medium 2a Rod 3, 4 Sidewall 5 Raw Material Supply Port 6 Grinded Material Discharge Port 7, 8 Liner Plate 9 Shell Liner 10 Lid 11 Support Member 12 Small Hole

Claims (2)

[Scope of utility model registration request] 1. A rotary cylinder in which a large number of grinding media are installed is provided with side walls at both ends, and a raw material supply port is provided on the side walls at one end.
In a cylindrical crusher in which a crushed material discharge port is formed on the side wall at the other end, in the rotary cylinder, near the side wall on the crushed material discharge port side, a predetermined gap is formed between the side wall and the cylinder body wall. And a liner plate that closes the pulverized material discharge port while forming a cylinder. 2. Side walls are provided at both ends of a rotary cylinder containing a large number of grinding media, and a raw material supply port is provided at the side walls at one end.
In a cylindrical crusher in which a crushed material discharge port is formed on the side wall at the other end, a liner plate that closes the crushed material discharge port is arranged on the crushed material discharge port side wall in the rotary cylinder. A cylindrical crusher characterized by being provided with a small hole for passing a crushed material through the liner plate.