JP4362771B2 - Shell cleaning and grinding equipment - Google Patents

Description

  The present invention relates to an apparatus for crushing seashells of seafood with seashells including scallops, and more particularly to an apparatus for simultaneously cleaning seashells and reusing the washing water to prevent environmental pollution.

  The majority of aquaculture production of marine products such as scallops and oysters ship only the edible portion with the harvested shells as strips. Therefore, a large amount of shells were generated in the production area.

  Although these shells become industrial waste, it has been known that useful industrial utility value is born by processing them as calcium-containing materials. However, large-scale facilities were required to clean marine animals and plants attached to shells, stripped pieces, and crush shells.

  Moreover, even when used as a cement-mixing material for offshore structures, the pulverization dimensions differ depending on the purpose of use. Therefore, it is necessary to prepare a plurality of pulverization machine facilities and replace the facilities each time.

  Furthermore, there is a problem that the shellfish cleaning liquid needs to be cleaned of sewage and cannot be cleaned unless it has a drainage facility. For this reason, on-site manufacturing of marine improvement materials such as shell-mixed concrete products was not possible.

  Patent Document 1 discloses a technique for powder processing of scallop shells, but a technique for producing fine powder that can be edible through processes such as sorting, dry sterilization, primary pulverization, and fine pulverization. However, special equipment such as a hammer crusher and a roller mill was required.

Japanese Patent Laid-Open No. 2002-272421 (page 2, FIG. 1)

  The present invention has been made in view of the above problems, and is to efficiently perform washing and pulverization of shells in the same apparatus, and to provide an apparatus capable of filtering and precipitating washing water for reuse. To do.

In order to solve the above-mentioned problems, the shell cleaning and grinding apparatus of the present invention is a shell cleaning and grinding apparatus for cleaning and grinding a shell from which the edible portion is removed or a coarsely ground shell to a size according to the purpose of industrial use. Because
The shell washing and pulverizing apparatus is provided with an opening into which the shell to be crushed is placed at the top, and a substantially rectangular parallelepiped having a discharge port for the crushed shell and a washing water tank for storing sewage washing the shell. A washing and pulverizing unit, and a washing water tank connected to the washing and pulverizing unit, and a filtration regeneration unit that regenerates the washing water by filtering the shell washing water;
The washing and pulverizing unit includes a high-pressure water injection unit for cleaning the shells that have been charged, a rotating roller that rolls and pulverizes the shells that have been thrown into the lower plate, and a water separation sink that guides the crushed shells to the outlet. With
The filtration regeneration unit includes a stirring tank for adding a flocculant to the shell washing sewage and stirring to agglomerate the suspended matter in the sewage, and a filtration tank provided with a rectifying membrane for promoting filtration precipitation. It is characterized by.

  A plurality of the rotating rollers are provided in the washing and pulverizing section so that adjacent cylindrical surfaces are close to each other, and each rotating roller is rotated by a hydraulic motor, and the hydraulic pressure capable of controlling the direction of rotation forward / reversely. It is characterized by having a pipeline.

  The rotating roller may be any one of a notched cam having a notched end surface from the center on a cylindrical surface whose radius gradually opens, a groove cam having a groove on the cylindrical surface, and a spherical cam having a drum-shaped bulge on the cylindrical surface. It is characterized by using or.

  The stirring tank is a cylindrical water tank having an inlet for receiving sewage from the cleaning water tank and a treated water receiving port for receiving other treated water, and has a certain amount according to the inflow amount of treated water. An apparatus for quantitatively adding a flocculant for adding a flocculant, a first rotating blade that stirs the treated water near the liquid surface of the stirring tank in the tank bottom direction, and a second that stirs the treated water near the tank bottom in the liquid surface direction. It comprises the stirring apparatus provided with the said rotation feather.

  The flocculant is a porous granule obtained by firing a scallop shell.

  According to the shell washing and pulverizing apparatus of the present invention, the shell can be easily washed and crushed by the same apparatus. In addition, since crushing and crushing is due to the rolling pressure of the rotating roller and the eye plate, there is no failure, and even if clogging occurs due to meshing, it can be easily eliminated by reversing the hydraulic motor and the operation can be continued. Furthermore, since a plurality of rotating rollers are provided, crushing and crushing efficiency can be increased.

  In addition, since the washing sewage collected in the washing water tank of the washing and pulverizing unit is coagulated, solidified and precipitated in the filtration regeneration unit provided therewith, it can be reused. Water saving can be achieved.

  In addition, the filtration regeneration unit adds a flocculant composed of porous granules obtained by firing scallop shells to contaminated water, and agglomerates solid matter in a stirring tank equipped with a rotating blade that stirs efficiently in the vertical direction. Can do. Furthermore, since the precipitation tank is provided with a rectifying membrane that efficiently filters and precipitates the solid agglomerates, the washing water can be reused.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a cross-sectional view showing a configuration of an embodiment of a shell cleaning and grinding apparatus of the present invention.

  The shell cleaning and pulverizing apparatus 100 includes a cleaning and pulverizing unit 10 and a filtration and regenerating unit 30. The cleaning sewage stored in the cleaning water tank 11 of the cleaning and pulverizing unit 10 is pumped by a drainage pump 38, and is passed through pipes 38a and 38b. The washing water that has been sent to the stirring tank 31 of the filtration regeneration unit 30 and regenerated by filtration is configured to be reusable.

  The filtered washing water is pumped up from the filtration tank 32 by the high-pressure water pump 37, and is supplied from the high-pressure water injection unit 15 attached to the high-pressure pipe 37b toward the inside of the washing and pulverizing unit 10 through the high-pressure pipes 37a and 37b. Spray the shell to clean the shell. Although the high-pressure water injection units 15 are provided at regular intervals in the figure, they may be provided at a high density at even shorter intervals.

  The shell introduced from the shell introduction opening 12 at the upper part of the washing and pulverizing unit 10 is provided between a plurality of rotation rollers 18, 18 provided inside, or a notch end face 18 a (provided around the circumference of the rotation roller 18 ( 2) and is pressed against the lower plate 17 while being crushed.

  As shown in FIG. 3, the shell 50 sandwiched between the rotating roller 18 and the eye plate portion 17 is crushed to a size equal to or smaller than the size of the through hole (eye plate) provided in the eye plate portion 17, and the eye plate portion 17. Falls into the water separation sink 13 provided at the lower part of the head.

  The crushed shell 50a that has fallen into the water separation sink 13 is carried along the inclination of the water separation sink 13 to the crushed shell outlet 12 along with the washing water. The washing water flows down from the mesh of the water separation sink 13 to the washing water tank 11.

  Here, as shown in FIG. 2 (a), the rotating roller 18 is a roller whose circumferential radius is a slightly curved circumferential curve, so that the shell can be crushed with a short radius. Crushing at the gap between the surface and the eye plate, and separating the crushed pieces from the through-holes that are crushed at the gap between the circumferential surface of the long radius and the eye plate, so-called small gaps, and perforated in the eye plate part 17 The operation of pushing to 13 is repeated.

  In FIG. 2A, 18a has a structure in which the inserted shell is sandwiched between the rollers with the sector cross-section of the cylindrical roller 18 as a notched end face. According to this notch end face 18a, the thrown-in shell is bounced between the rollers and does not cause a problem that it will not be crushed indefinitely. FIG. 2B is a plan view of FIG. 2A and shows that the roller shaft 18c is provided at the center of the gradually opening circumference.

  With reference to FIG. 1 again, the drive mechanism of the rotating roller 18 will be described. The rotating roller 18 is driven to rotate by a hydraulic drive motor 16. The hydraulic circuit (not shown) is piped so that adjacent rollers rotate in reverse, and is configured to be able to control the rotation speed and change the rotation direction (reverse rotation). When a large amount of shells are clogged, it can be repaired by reversing the rotating roller 18.

  In the embodiment, the rotary roller is the cylindrical roller 18 provided with a notched end surface from the center on the cylindrical surface whose radius is gradually opened. However, the rotary roller has a groove cam provided with a groove on the cylindrical surface, or a drum on the cylindrical surface. Various types of cams such as a spherical cam provided with a bulge may be replaced and used according to the type or size of the shell to be crushed.

  Further, the support shaft of the rotating roller is attached so as to be adjustable left and right so that the interval between the rotating rollers 18 and 18 can be adjusted.

  The eye plate 17 is placed on an adjuster 17a that can be finely adjusted up and down, and by adjusting the gap with the rotating roller 18, the crushing size of the shell can be adjusted.

  Next, the configuration of the filtration regeneration unit 30 will be described. The filtration regeneration unit 30 includes a stirring tank 31 and a filtration tank 32, and the filtration tank 32 is further divided into a plurality of filtration tanks by a rectifying membrane 33. In this embodiment, the filtration tank is divided into four filtration tanks 32a, 32b, 32c, and 32d.

  First, the cleaning sewage stored in the cleaning water tank 11 is pumped up by the drainage pump 38 and sent to the agitation tank 31 through the pipes 38a and 38b. This control may be performed such that the drain pump 38 is automatically operated in accordance with the water level of the washing water tank 11.

  The agitation tank 31 is provided with a flocculant addition device 35, which is a mechanism for dripping a predetermined amount of a chemical for aggregating the flocs of washing wastewater. As the flocculant, it is desirable to use a porous body obtained by firing a scallop shell.

  A rotating blade 36 attached to the stirring motor 34 is provided in the stirring tank 31 in order to stir and mix the added flocculant and cleaning wastewater.

  In the present invention, a rotating blade 36a that is provided in the vicinity of the water surface of the stirring tank 31 and rotates so as to cause a weak downward water flow, and a rotating blade 36b that is provided in the vicinity of the bottom surface of the stirring tank 31 and rotates so as to generate a strong rising water flow. With.

  By these rotary blades 36, the washed sewage becomes agglomerated flocs and is sent to the adjacent filtration tank 32 a beyond the wall surface of the stirring tank 31.

  The boundary between the filtration tank 32a and the filtration tank 32b is separated by a filtration membrane 33, and precipitates are precipitated in order from the largest. Here, as the filtration membrane 33, a cloth-like “rectifying membrane” in which the central portion is a coarse net-like fiber and the periphery is finely knitted is used. By using this rectifying membrane, sewage can be purified without reducing the speed of filtration.

  From the first filtration tank 32a to the fourth filtration tank 32d, the cleaning sewage that has passed through the rectifying membrane 33 is purified, and the quality can be reused as cleaning water. Although not shown, it is desirable to provide a pipe for replenishing the filtration tank 32d for the wash water reduced by transpiration.

  The filtered washing water is pumped from the filtration tank 32 by the high pressure water pump 37 through the pipe 37a, sent to the washing and grinding unit 10 through the high pressure pipe 37b, and attached to the high pressure pipe 37b toward the inside of the washing and grinding unit 10. The shell is washed by spraying at a high pressure from the high-pressure water spraying unit 15.

It is sectional drawing which shows the structure of one embodiment of the shell washing and pulverizing apparatus of the present invention. The rotating roller of this invention is shown, (a) is sectional drawing, (b) is a top view. It is a schematic diagram explaining operation | movement of the shell crushing of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Washing and crushing part 11 Washing water tank 12 Shell inlet opening 13 Water separation sink 14 Crushing shell outlet 15 High pressure water injection part 16 Hydraulic drive motor 17 Eye plate part 18 Rotating roller 18a Notch end surface 18b Recessed line circumference 18c Roller shaft 30 Filtration regeneration part 31 Stirring tank 32, 32a, 32b, 32c, 32d Filtration tank 33 Filtration membrane (rectifying membrane)
34 Stirring motor 35 Coagulant adding device 36 Rotary blade 36a Rotary blade 36b Rotary blade 50 Shell 50a Ground shell

Claims (6)

A shell cleaning and pulverizing apparatus for cleaning and pulverizing shells with edible parts removed or coarsely crushed shells into dimensions suitable for industrial purposes,
The shell washing and pulverizing apparatus is provided with an opening into which the shell to be crushed is placed at the top, and a substantially rectangular parallelepiped having a discharge port for the crushed shell and a washing water tank for storing sewage washing the shell. A washing and pulverizing unit, and a washing water tank connected to the washing and pulverizing unit, and a filtration regeneration unit that regenerates the washing water by filtering the shell washing water;
The washing and pulverizing unit includes a high-pressure water injection unit for cleaning the shells that have been charged, a rotating roller that rolls and pulverizes the shells that have been thrown into the lower plate, and a water separation sink that guides the crushed shells to the outlet. With
The filtration regeneration unit includes a stirring tank for adding a flocculant to the shell washing sewage and stirring to agglomerate the suspended matter in the sewage, and a filtration tank provided with a rectifying membrane for promoting filtration precipitation. A shell cleaning and pulverizing device.   A plurality of the rotating rollers are provided in the washing and pulverizing section so that adjacent cylindrical surfaces are close to each other, and each rotating roller is rotated by a hydraulic motor so that the direction of rotation can be controlled forward and backward. The shell cleaning and pulverizing apparatus according to claim 1, comprising:   Since the eye plate uses an eye plate with a different eye size according to the particle size of the target crushed shell, the eye plate is replaceable and is cleaned and pulverized by an adjusting bolt for adjusting the gap with the rotating roller. 3. The shell cleaning and pulverizing apparatus according to claim 1, wherein the shell cleaning and pulverizing apparatus is placed on a housing.   The rotating roller is one of a notched cam having a notched end surface from the center on a cylindrical surface whose radius is gradually opened, a groove cam having a groove on the cylindrical surface, and a spherical cam having a drum-shaped bulge on the cylindrical surface. The shell cleaning and pulverizing apparatus according to any one of claims 1 to 3, wherein the apparatus is used.   The agitation tank is a cylindrical water tank having an inlet for receiving sewage from the washing water tank and a treated water receiving port for receiving other treated water, and a certain amount of flocculant according to the inflow amount of treated water , A first rotating blade that stirs the treated water near the liquid surface of the stirring tank in the tank bottom direction, and a second rotation that stirs the treated water near the tank bottom in the liquid surface direction. The shell washing and pulverizing apparatus according to claim 1, further comprising a stirring device including wings. 6. The shell washing and pulverizing apparatus according to claim 1, wherein the flocculant is a porous granule obtained by baking a scallop shell.

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