JPS5924363Y2 - sand machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sand machine, that is, a device for producing sand used in concrete work etc. from river stones.

Generally, a sand machine has a casing that forms a crushing chamber.
A control cage is provided protruding from one side, and a large number of blades are installed between two disc-shaped side plates in an even circumferential arrangement, and a large number of auxiliary blades are fixed to the outer surfaces of the above-mentioned both side plates. A rotating body is loosely fitted around the control cage from the other side and rotatably supported, and a repulsion is applied to the inner surface at the front of the rotating body in the rotational direction and the inner surface along the rotational trajectory of the rotating body. It is made up of individual boards strung together.

In order to crush raw stones using the sand making machine having the above configuration, first, raw stones are continuously introduced into the raw stone input port, and are fed into the crushing chamber via a control cage by a screw conveyor. The raw stone sent into the crushing chamber is radiated outward by the centrifugal force of the blades of a rotating body rotating at high speed, and is crushed by colliding with a repulsion plate or the like.

However, in the above-mentioned conventional sand making machine, the repulsion plate that crushes the rough stones is stretched in an arc shape along the rotation locus of the rotating body, so the collision force of the rough stones projected by the repulsion plate is alleviated. , which has the disadvantage of reducing crushing efficiency.

In addition, in the above-mentioned conventional sand making machine, the tip of the blade provided on the rotating body is made to protrude by a predetermined distance from the outer periphery of the side plate, and this protruding part is used as a part of the hammer for crushing the rough stone. Therefore, due to long-term crushing operations, a portion of the hammer of the blade is worn out, and if this portion of the hammer is worn out, the entire blade must be replaced along with the attachment portion that can still be used.

As a result, the running cost of the sand making machine increases and the working efficiency decreases, which is not desirable.

The present invention is an improvement on the conventional sand making machine in view of the above-mentioned drawbacks, and has extremely high rough stone crushing efficiency.Moreover, it reduces the effort and number of times required to replace a part of the hammer for crushing rough stone. It is an object of the present invention to provide a sand making machine that generates very little fine powder.

This invention will be described below with reference to embodiments shown in the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a casing forming a crushing chamber a, and a lid body 2 of the casing is pivoted around a pivot 3 so as to be openable and closable.

4 is the casing 1 from the center of one side wall of the casing 1.
A cylindrical control cage that protrudes inside, and has a window hole 4a formed at a predetermined position on the circumferential surface of its tip, and the position of the window hole 4a can be adjusted in the center of the casing 1 along the circumferential direction. to be located.

Reference numeral 5 denotes an L-shaped chute having a raw ore input port 6, and its bent portion 5a is connected to the open end of the control cage 4 to form a horizontal raw ore supply path 7.

Reference numeral 8 denotes a screw conveyor which is rotatably supported within the raw stone supply path 7 and can be replaced depending on the properties of the raw stone such as viscosity or non-viscosity. Support by means of.

10 is a second rotating shaft rotatably inserted into the casing 1 from the center of the other side wall of the casing 1; 11 is a second rotating shaft;
A cylindrical mounting member that is fitted and fixed to the shaft end of the rotating shaft 10,
A disk-shaped flange portion 12 is formed on its circumferential surface.

Reference numeral 13 denotes a rotary body in which two circular side plates 14 and 15 are fixed at a predetermined interval with fixing pins 16, and one of the side plates 14 is concentrically screwed to the flange portion 12 of the mounting member 11. In addition to being fixedly installed, the other side plate 15 is loosely fitted and supported around the control cage 4.

Furthermore, in the grooves 17 provided at equal positions on the circumference (eight locations in the drawing) facing the inner surface of the side plates 14 and 15, rough stone projection blades 18 are removably fitted and installed. A hammer part 19 formed into a shape is installed in parallel with the raw stone projection blade part 18.

As shown in FIG. 3, the rough stone projection blade portion 18 is attached to a mounting board 20 bent into a predetermined shape and to the surface side of a flat plate portion 20a of the mounting board 20 via a thin elastic member 21. It consists of a fixed impact receiving plate 22.

Further, the impact plate 22 is made of a wear-resistant material such as ceramic.

Further, the rough stone projection blade section 18 is mounted on a mounting substrate 20 thereof.
A protrusion 23 is provided at a predetermined position on the back side of the flat plate portion 20a.
A pivot pin 25 is inserted into the mounting hole 23a of the protrusion 23, and both ends of the pivot pin 25 are installed between the side plates 14.15. Movement of the portion 18 in the circumferential direction and in the circumferential direction is prevented.

Further, as is clear from the figure, the hammer part 19 has rough stone crushing surfaces 19 a,
19b, and the raw stone crushed surface 19
a, 19b protrude by a predetermined distance from the outer periphery of the side plates 14.15, and are removably installed in the grooves 17.17 of the side plates 14, 15.

Furthermore, grooves 26, 27, 28 are formed along the longitudinal direction on both side surfaces of the bottom of both ends of the hammer part 19 to engage and engage with the protrusions 24, 24' of the ore projection blade part 18. to form a predetermined length.

The grooves 26, 27, 28 are arranged in a staggered manner on both sides of the hammer part 19.

This is because the crushing surfaces 19a and 19b of the hammer part 19 are used alternately, and in this case, the hammer part 19
along the radial direction of the side plates 14 and 15, and the concave grooves 26 and 27.
4. 24' and fit it in sequence, and its fractured surface 1
9a.

19b is configured to always protrude a predetermined distance from the outer periphery of the side plates 14, 15.

To attach and detach the hammer part 19 for reversing, pull out the pivot pin 25, then pull out the hammer part 19 and the rough stone projection blade part 18 radially outward from the groove part 17 of the side plate 14.15, and then remove the hammer part 19. Turn over the part 19 and see the rough stone projection blade part 1.
8, fit the concave grooves 26, 27.28 and the protrusion 24.24', and in this state insert the pivot pin 25 into the groove 17 of the side plate 14.15 from the outside in the radial direction again. The projection blade part 18 is inserted into the mounting hole 23 a of the protrusion 23 of the mounting board 20 and pivotally mounted to the side plates 14 and 15.

29.30 is an auxiliary blade curved into a predetermined shape and installed on the outer surface of the side plate 14.15 of the rotating body 13;
, 15 and the inner surface of the casing 1,
They are tilted backwards and have a large number of protruding pieces (eight pieces on each side in the drawing).

31 is a second substrate mounted by appropriate means at a predetermined position in the second crushing chamber a' shaped approximately along the rotation locus of the rotating body 13, and 32 is attached to the inner surface of the second substrate 31. A plurality of second repulsion plates 33 are installed in a replaceable manner and are connected to the second repulsion plate 32 at the lower part of the second crushing chamber a', and both ends are L-shaped. Bent metal bar 3 of a predetermined length
4 are fitted into grooves 35 formed at predetermined positions in the lower part of the inner surface of the casing 1 and arranged side by side to form a large number of gaps 36.

Reference numeral 37 denotes a first repulsion plate replaceably attached to the first substrate 38 at a forward position in the rotational direction of the rotating body 13, and reference numeral 39 provides a first repulsion plate 37 with rocking vibration in the left-right direction in FIG. 40 is a sand discharge port, 41 is a casing 1
It is an opening/closing door installed on the side wall of the building.

Next, the operating procedure of the sand making machine having the above configuration will be explained.

First, the first and second rotating shafts 9 and 10 are rotated by appropriate means, the screw conveyor 8 is rotated in a predetermined direction, and the rotating body 13 is rotated in the direction of the arrow shown in the figure.

Next, the rough stone with surface water attached is dropped from the rough stone input port 6 of the chute 5 into the rough stone supply path 7, and the rotating screw conveyor 8 moves the rough stone into the control cage 4.
When the material is sent out through the window hole 4a, a rotating centrifugal force is applied by the rotating body 13 rotating at high speed, and the first repulsion plate 37 is vibrated by the vibrator 39 at the front in the first crushing chamber a. It is crushed by the collision and is sent to the second crushing chamber a' by the rotating body 13, and the second crushing chamber a'
It collides with the second repulsion plate 32 inside and is further crushed.

At this time, since the second repulsion plate 32 is installed in an approximately shape with respect to the rotation locus of the rotating body 13, when the collision occurs, the collision force is transmitted straight to the projected rough stone, Improve the crushing efficiency during collision.

The crushed raw stone collided and crushed by the second repulsion plate 32 is then transferred to a loss dollar 33 connected to the second repulsion plate 32 and a part 9 of the rotating body 13. The crushed materials are further crushed into smaller pieces by the crushing surfaces 19a and 19b, and the crushed materials are crushed into the gap 3 of the Rossdol 33.
6 is released along with water.

At this time, the hammer part 19 crushes the rough stone between the crushing surfaces 19a and 19b that protrude by a predetermined dimension from the outer peripheral part of the side plate 14.15 and the Rosdol 33, but due to long-term use, the crushing surface Either one of 19a and 19b (crushed surface 19a in the drawing) is worn out.

According to the present invention, the hammer part 19 is removably installed in parallel with the rough stone projection blade part 18, so that even if the crushing surface 19a of the hammer part 19 is worn out, the hammer part 19 will not be damaged. By inverting the portion 19 by 180°, the worn fracture surface 19a can be located at the rear.

In this case, the hammer portion 19 is slid along the radial direction of the side plates 14 and 15, and the concave grooves 26, 27, and 28 formed at predetermined positions on both sides are inserted into the protruding portion 24 of the ore projection blade portion 18. .24' are successively raised and fitted, so that the crushed surfaces 19a and 19b thereof protrude by a predetermined distance from the outer periphery of the side plate 14.15.

As a result, the crushing surfaces 19a, 19 of the hammer portion 19
Even if b wears out, there is no need to replace the hammer part 19, which is economically advantageous.

By the rotation of the rough stone projection blade part 18, the crushed raw stones remaining in the Rosdol 33 are projected onto the vibrating first repulsion plate 37 in the first crushing chamber a, and are crushed. Collision crushing is also available, and highly efficient crushing can be obtained.

After that, the sand that has been dehydrated and crushed as described above is sent to the sand outlet 4.
This crushing operation is completed when the first crushing chamber a is discharged from the first crushing chamber a through a number of gaps 36 in the 0 and Rossdol 33.

On the other hand, when the rotating body 13 rotates, the presence of the auxiliary blades 29 and 30 disposed in the space between the side plates 14 and 15 and the inner surface of the casing 1 produces a fan effect.

As a result, a large amount of air is sucked in from the raw stone input port 6 connected to the raw stone supply path 7, and the raw stone with surface water adhering to it can be dried by this sucked air.

In addition, when the rough stone is crushed, the impact force of the rough stone colliding with the rough stone projection blade section 18 is reduced due to the presence of the impact receiving plate 22 that is fixed and adhered to the surface of the flat plate portion 20a of the mounting board 20 of the rough stone projection blade section 18. and prevent its wear.

As explained above, this idea is equipped with a loss dollar at the bottom,
The first one swings back and forth on the front and has a repulsion plate attached to the inside.
a casing having a crushing chamber, and a second crushing chamber formed in a shape extending from the upper surface of the first crushing chamber to the rear surface and having a repulsion plate attached to the inner surface; A cylindrical control that is inserted and fixed in the center of the casing, has a raw stone input port on the outer end, a raw stone discharge window on the inner peripheral surface, and a built-in screw conveyor that is rotationally driven by the first rotating shaft. A plurality of mounting boards are attached via pivot pins between the cage and two annular side plates which are connected oppositely in the axial direction with a stop pin and have a plurality of radial grooves on their opposing inner surfaces. A wear-resistant impact plate is attached to the front surface of the mounting board in the rotational direction via a thin elastic member, and an axial protrusion is provided on the back surface of the mounting board, and grooves that engage with this protrusion are formed on both front and rear sides. A hammer member provided in a staggered manner is installed between the two annular side plates so that they can be installed front and back using the radial groove, and the two annular side plates are attached to the outer periphery of the control cage in the casing. A sand making machine is constituted by a rotary body which is arranged rotatably across the ore discharge window hole and is rotated at high speed by a second rotary shaft provided at the center of the other side of the casing. Therefore, the raw ore can be supplied to the center of the rotating body by the control cage, and is discharged between the two annular side plates of the rotating body.
The impact plates that are radially present between the annular side plates can reliably project and release all of the raw ore to the outside, and the first crushing chamber at the front is equipped with a repulsion plate that swings and vibrates in the front and rear directions. Therefore, the rough stone is effectively crushed by the above-mentioned projection force and the rocking vibration of the repulsion plate, and since the second crushing chamber is shaped at right angles from the top surface to the rear surface, the projection crushing of the rough stone is also ensured here. This method produces sand with less variation in crushed particle size.

In addition, since the impact receiving plate is attached to the front surface of the mounting board via a thin elastic member, the mounting board will not be damaged.Moreover, the hammer member has protrusions and grooves on the back side of the mounting board in the direction of rotation. Since they are simply engaged so that they do not come out in the radial direction, no large impact force is applied to the mounting board.

That is, all the circumferential impact applied to the hammer member can be received by the radial grooves of the two annular side plates, and the engagement portion between the protrusion of the mounting board and the groove of the hammer member may be damaged. It can be used for a long time.

In addition, the hammer member can be used repeatedly by flipping the front and back sides according to the wear of the tip, and by shifting the engagement between the staggered grooves and the protrusion outward, the tip can be gradually drawn out. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of a sand making machine according to the present invention, FIG. 2 is a side sectional view of the main part thereof, and FIG. 3 is an enlarged sectional view of the main part thereof. a...First crushing chamber, a'...Second crushing chamber, b...Space, 1...Casing, 4... ...Control cage, 13...
...Rotating body, 14, 15...Side plate, 18...
...Rough stone projection blade part, 19... Hammer part,
20...Mounting board, 24.24'...
Projection portion, 32...Second repulsion plate.

Claims (1)

[Scope of utility model registration request] Equipped with a loss dollar at the bottom, it oscillates in the front and back directions,
It has a first crushing chamber with a repulsion plate attached to its inner surface, and a second crushing chamber which is formed in a shape extending from the top surface to the rear surface of the first crushing chamber and has a repulsion plate attached to its inner surface. A casing that is inserted and fixed into the center of the casing from the center of one side of the casing, has a raw stone input port at the outer end, a raw stone discharge window hole on the inner peripheral surface, and is rotationally driven by a first rotating shaft. A cylindrical control cage with a built-in screw conveyor is connected via a pivot pin to two annular side plates that are spaced apart in the axial direction and connected to each other by a stop pin, and have a plurality of radial grooves on their opposing inner surfaces. A plurality of mounting boards are mounted on the front surface of each mounting board in the rotating direction, and a wear-resistant impact plate is attached via a thin elastic member to the front surface of each mounting board, and an axial protrusion is provided on the back surface of the mounting board. A hammer member having engaging concave grooves provided in a staggered manner on both the front and rear sides is installed between the two annular side plates so as to be reversible back and forth using the radial grooves, and the two annular side plates are attached in a reversible manner. Rotation is arranged rotatably on the outer periphery of the control cage in the casing, straddling the ore discharge window hole, and is rotated at high speed by a second rotating shaft provided at the center of the other side of the casing. A sand making machine characterized by being composed of a body and a body.