JP5833343B2 - Filtered base block - Google Patents

Description

  The present invention is a granulator (briquette machine) for granulating a raw material containing only a normal powder and a liquid containing water, a binder, etc. into a pellet form, or the raw material is formed into a flake shape or a plate shape. The present invention relates to a base block of a pair of forming rolls at a lower portion of a raw material supply hopper applied to a compactor for compression molding.

  In recent years, as a means for safely and economically transporting or storing a raw material gas such as natural gas, a method of using a hydrate (gas hydrate) generated by reacting a raw material gas with raw material water has attracted attention. .

  In general, gas hydrate is produced by reacting raw material gas such as natural gas and raw water under high pressure and low temperature, but the produced gas hydrate is in a slurry state with unreacted raw water. Become. Then, in order to improve the handling property at the time of transportation and storage, after dewatering the slurry-like gas hydrate, it is processed into a pellet form with a granulator.

  The granulator supplies a granular gas hydrate between a pair of molding rolls having a large number of molds (pockets) on the outer peripheral surface and compresses them into pellets. The water (unreacted water) contained in the gas hydrate is squeezed out. Then, water accumulates on the biting side of the forming roll, and the biting of the gas hydrate deteriorates, making it impossible to produce the pellets as designed.

  In order to solve such a problem, it has been proposed to provide drainage means such as a slit or a labyrinth on the wall surface of the hopper that temporarily stores the gas hydrate supplied to the forming roll (see, for example, Patent Document 1). ).

  However, there is a problem that the slit or labyrinth is blocked by the amount of water drained from the slit or labyrinth provided on the wall surface of the hopper, or by gas hydrate accompanying the drainage.

JP 2007-269908 A

  The present invention provides a wedge wire that can smoothly drain water or a binder generated on the biting side of a forming roll without causing clogging, or can smoothly degas a powder during granulation. It is to provide a base block with a filter such as a screen.

The base block according to claim 1 of the present application is provided in a portion located upstream of the flow of the raw material from the biting point of the pair of rolls and located in the raw material supply hole of the raw material supply container near the tip of the push screw. The entrance of the first drainage hole is covered with a first wedge wire screen block, and the entrance of the second drainage hole provided in the cheek plate located below the first drainage hole is the second wedge wire. It is covered with a screen block.

The base block according to claim 2 of the present application is provided in a portion located upstream of the flow of the raw material from the biting point of the pair of rolls and located in the raw material supply hole of the raw material supply container near the tip of the push screw. It was covered with a first wedge wire screen block entrance of leakage DOO shaped first drainage holes, the inlet of the second drain hole provided in the cheek plate which is located below the first drain hole Covering with a flat second wedge wire screen block.

  As described above, the present invention is provided on the upstream side of the flow of the raw material from the biting point of the pair of rolls, and at the portion located in the raw material supply hole of the raw material supply container near the tip of the push screw. Since the entrance of the 1st drainage hole and the 2nd drainage hole provided in the cheek plate located under the 1st drainage hole were each covered with the wedge wire screen block, the granulator (briquette machine) Alternatively, even if it is applied to a compactor or the like, it is possible to discharge a gas or water or a binding agent or the like squeezed out to the biting side of the roll without causing clogging.

  That is, the wedge wire screen block has a small contact point when a solid (raw material) passes because the wire constituting the screen has a triangular cross-sectional shape. For this reason, since the passage of solids is good and clogging is difficult, dehydration is high.

  In addition, since a wire rod thicker than a general wire mesh (mesh) is used, even a slit with a small opening has high strength and accuracy. Moreover, since it is rich in workability, it is also possible to deal with conical and cylindrical shapes. Further, since the screen surface is flat, the solid material tends to flow smoothly on the screen surface. Further, the gas and liquid to be separated are highly permeable, and the aperture ratio can be increased.

  Further, the present invention provides a first drainage hole provided in a portion positioned on the wall surface of the raw material supply container near the tip of the screw feeder and upstream of the flow of the raw material from the biting point of the pair of rolls. Since the entrance of this is covered with a cylindrical or funnel-shaped wedge wire screen block, the wedge wire screen block can be easily attached and detached.

It is sectional drawing of a briquette machine or compactor provided with the base block which concerns on this invention. It is AA sectional drawing of FIG. It is a top view of the base block which concerns on this invention. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is a side view including the partial cross section of a funnel-shaped wedge wire screen block. It is operation | movement explanatory drawing of a wedge wire screen block.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the compactor 1 has a base block 3 with a filter according to the present invention attached to a lower part of a raw material supply hopper 2. As shown in FIGS. 3 to 5, the base block 3 has a substantially square raw material supply container portion 4 in plan view, and a front and rear formed integrally with the raw material supply container portion 4 on the lower surface of the raw material supply container portion 4. It is comprised from a pair of leg part 5a, 5b. The raw material supply container 4 has a funnel-shaped raw material supply hole 6 penetrating in the vertical direction, and a pair of front and rear legs 5a and 5b are respectively provided with cheek plates 16 inside.

  As shown in FIG. 4, the base block 3 has two first drain holes 8 a and 8 b that reach the raw material supply holes 6 on both front and rear surfaces of the raw material supply container section 4. In addition, a funnel-shaped first wedge wire screen block 9 is detachably mounted in the raw material supply hole 6.

  More specifically, the first drain holes 8a and 8b are provided on the upstream side of the flow of the raw material from the biting point d of the pair of forming rolls 15a and 15b and near the tip of the push screw 18 (FIG. 1). reference.). In addition, the code | symbol t is an angle of the biting point d with respect to the horizontal line which passes along the center point O1 of the forming roll 15a.

  For this reason, the inlets of the first drain holes 8a and 8b are covered with the side surfaces of the funnel-shaped first wedge wire screen block 9. Further, the inlets of the first drain holes 8 a and 8 b are communicated by an annular communication groove 10 provided around the raw material supply hole 6.

  On the other hand, as shown in FIG. 4, the cheek plate 16 is provided with a flat second wedge wire screen block 22 inside thereof. The flat second wedge wire screen block 22 is mounted in a groove 23 provided on the inner surface side of the cheek plate 16 so as to be flush with the inner surface of the cheek plate 16. The groove 23 communicates with a second drainage hole 24 that penetrates the cheek plate 16 and the legs 5a and 5b.

  For this reason, the entrance of the second drainage hole 24 is covered with the flat second wedge wire screen block 22. If desired, the second wedge wire screen block 22 may be formed in a curved surface that is convex toward the second drainage hole 24 side.

  The flat plate-like second wedge wire screen block 22 is disposed at a position corresponding to a position between a tip end 18a of the push screw 18 and a midpoint e of a straight line connecting the centers O1 and O2 of the pair of forming rolls 15a and 15b. (See FIG. 1).

  As shown in FIG. 7, the first and second wedge wire screen blocks 9 and 22 are arranged with metal wires 11 having an inverted triangular cross section arranged on a support 13 at equal intervals to form eyes (slits) 12. It is formed, is less clogged with powder particles and the like, has a strong screen, and has a high clearance (slit) accuracy.

  As shown in FIG. 6, the funnel-shaped first wedge wire screen block 9 is made of a large number of metal elements having wedge-shaped wire bodies 11 arranged in multiple stages to form a funnel shape and whose back surface is arranged in the vertical direction. It has a structure that is fixed to the elongated support 13 by welding. A flange 14 is provided on the large diameter portion side so that it can be fixed to the upper surface of the raw material supply container 4 of the base block 3. In addition, when the raw material supply hole 6 is cylindrical, a wedge wire screen block formed in a cylindrical shape is applied.

  Returning to FIG. 1 and FIG. 2, a pair of forming rolls 15 a and 15 b are arranged so as to face the raw material supply hole 6 of the base block 3 according to the present invention. The front and rear ends of the pair of forming rolls 15a and 15b on the biting side are sealed by the cheek plates 16 and 16 attached to the inside of the leg portions 5a and 5b of the base block 3.

  As shown in FIGS. 1 and 2, a push screw 18 having a spiral blade 17 is provided in the raw material supply hopper 2. This push screw 18 has a spatula-shaped adhesion preventing member 20 on its shaft portion 19, and scrapes the material adhering to the inner wall surface of the material supply hopper 2. The lower part 21 of the raw material supply hopper 2 has a funnel shape. Further, the outer peripheral surfaces of the pair of molding rolls 15a and 15b are flat surfaces without pockets.

  Thus, when the pair of forming rolls 15a and 15b and the pushing screw 18 in the compactor 1 are driven, as shown in FIGS. 1 and 2, the raw material containing liquid such as water and binder in the raw material supply hopper 2 (For example, gas hydrate) a is supplied to the biting side of the pair of forming rolls 15 a and 15 b through the raw material supply hole 6 of the base block 3.

  Then, the raw material a that has been squeezed into the pair of forming rolls 15a and 15b is flaked or plate-like product c and is pushed downward from between the pair of forming rolls 15a and 15b. At this time, a liquid b such as water or a binder contained in the raw material a is squeezed out to the biting side of the pair of forming rolls 15 a and 15 b, and this liquid b is contained in the raw material supply hole 6 of the base block 3. The first drainage holes 8a and 8b are discharged from the first drainage holes 8a and 8b through the slits 12 (see FIG. 7) of the funnel-shaped first wedge wire screen block 9 mounted on the flat plate-like second wedge wire screen block 22. The liquid is discharged from the second drain holes 24 and 24 through the slit 12.

  In the above description, the case where the base block 3 according to the present invention is applied to a compactor that compresses and molds a raw material containing a liquid such as water or a binder into a flake shape or a plate shape has been described. For example, it can also be applied to a granulator (briquette machine) that granulates the raw materials into pellets.

  In addition to the raw materials containing liquids such as water and a binder as described above, examples of the raw materials include raw materials only of ordinary powder.

  Further, the direction of the slits 12 of the first and second wedge wire screen blocks 9 and 22 may be either the direction of drilling the raw material supply holes or the direction intersecting with the drilling direction.

  Furthermore, it is also conceivable to use a filter (for example, a porous body) for separating gas or liquid instead of the first and second wedge wire screen blocks 9 and 22.

a raw material d biting point 4 raw material supply container 6 raw material supply holes 8a and 8b first drain holes 9, 22 wedge wire screen blocks 15a and 15b forming roll 16 teak plate 18a slow screw tip 24 second drain hole

Claims (2)

The inlet of the first drainage hole provided in the part located upstream of the flow point of the raw material from the pair of rolls and located in the raw material supply hole of the raw material supply container near the tip of the push screw is the first . A base block characterized in that it is covered with a 1 wedge wire screen block, and an entrance of a second drain hole provided in a cheek plate located below the first drain hole is covered with a second wedge wire screen block. . Leaks the inlet of the first drainage hole provided upstream of the flow point of the pair of rolls in the flow of the raw material and located at the raw material supply hole of the raw material supply container near the tip of the push screw. Cover with a dough-shaped first wedge wire screen block and cover the entrance of the second drainage hole provided in the cheek plate located below the first drainage hole with a flat plate-like second wedge wire screen block The base block according to claim 1.

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