WO2021223039A1

WO2021223039A1 - Device for primary cutting of dead fish and ensiling tank

Info

Publication number: WO2021223039A1
Application number: PCT/CL2020/050049
Authority: WO
Inventors: Joaquin Juan MARDONEZ BARROUILHET; Luis Octavio MARTINEZ ZAPATA
Original assignee: Soluciones Biotecnologicas Spa
Priority date: 2020-05-05
Filing date: 2020-05-05
Publication date: 2021-11-11

Abstract

The invention relates to a device for the primary cutting of dead fish, mountable at the bottom of an ensiling tank provided with a chopper pump, said device comprising a body with an inner cavity open to an intake chamber formed in an extension of the body that is attached to a tube for the direct supply of dead fish from outside the tank. The body also has an inlet for the inflow of fluid from the tank, an outlet for the outflow of cut fish, which can be located next to the pump, and a fish cutting mechanism arranged inside the inner cavity, consisting of at least one cutting tool and at least one fixed plate arranged transverse to said at least one cutting tool and having parallel grooves for the passage of same. The invention also relates to an ensiling tank including such a device, a wet-well chopper pump, an externally actuated fluid flow distribution system, and a preservative-dosing container and pump.

Description

DEAD FISH PRIMARY CUTTING DEVICE

AND ENSILING POND

SCOPE OF THE INVENTION

The invention relates to the processing of dead fish in farming centers, as well as process plants and other facilities that generate and require treating this type of waste. More particularly the invention relates to a device for the primary cutting of dead fish and to a silage pond for receiving, cutting, reducing, grinding, mixing, chemically treating and disposing of dead fish in the aforementioned farming centers, process plants and facilities.

BACKGROUND OF PRIOR ART

In fish farming it is necessary to handle and treat fish kills caused by different reasons. The dead fish are removed from the culture cages and transferred to the area of analysis of the cause of death in order to determine it. Subsequently, to comply with current legislation, the dead fish are minced and ground, with some water initially, inside a silage pond until obtaining a pasty fluid or pulp that is chemically treated, adding silage liquid (a preservative) and the resulting product, called silage, is pumped into a silage storage pond, from where it is regularly removed, by a third party, to be transferred to the flour and / or oil factories.

The most common equipment for this work consists of silage ponds with submersible pumps of the type used for sewage, with a recirculation pipe inside the pond, to which a rotary cutting blade is added by hand, welded to the nut at the end of the pump shaft to try to mince the dead fish at the pump inlet. Alternatively, these pumps can incorporate a factory grinding and chopping mechanism in the impeller, that is, they are so-called chopper pumps. After loading the dead fish, the pump recirculates the pasty fluid that is formed in the pond until the desired degree of grinding of the dead fish and homogenization is obtained and the resulting silage is transferred from the silage pond to a silage storage pond of fish.

However, these mincer pumps are not capable of easily and effectively processing large dead fish (5 Kg or more) despite the fact that some models optionally include a disintegrating tool at the impeller-mincer inlet to help reduce the largest remains, which however lacks the proper design, size and enclosure. Therefore, the facilities require having a dead fish cutter external to the pond for this purpose or manually chopping the dead fish with knives. before throwing them into the pond. This represents a risk for operators who can suffer an occupational accident with manual or mechanized cutting tools when cutting and entering fish. In addition, given that the fish in the crops are growing and each time the fish mortality is made up of larger fish, which can weigh 8 kg or more in the salmon farms, it is difficult to manipulate them and achieve that they are chopped and homogenized. in the fluid due to its size, the thickness of your skin, and other factors. Furthermore, as dead fish are fed openly within the pond, without directing or channeling to the grinder pump, the milling and homogenization of the fluid within the pond is very poor, requiring silage cycles that are still very long.

On the other hand, these submersible pumps have many failures caused mainly by the breakage of the mechanical seals, corrosion, bearing failure and burning of motors because the actual working conditions are not related to the design variables of these pumps.

Another problem is that with each additional load of dead fish the viscosity of the fluid in the ensiler pond increases, also producing a separation of phases between a more aqueous phase and another with a mixture of oils and fats, causing a percentage of dead fish to float in the lower density mixture making the silage cycle extremely difficult. Due to the lack of agitation in the pond, the times of grinding and homogenization from when the dead fish are loaded until the silage is obtained are very long and with this there is overheating of the motors and an excess of energy consumption electrical.

Another difficulty is that, when using submersible pumps, a lot of initial water is used to the detriment of the quality of the silage (concentration) and, in addition, a significant amount of silage must remain in the ensiler tank during transfer to the storage tank, since the silage motor The pump must always be submerged in a minimum level of fluid for its cooling.

In an improved silage pond over the previous one, a wet well grinder pump with a robust factory design is used instead of a submersible pump. This wet well grinder pump has the motor outside the pond so that only the pump (impeller, casing and column) are exposed and submerged in the fluid to avoid the risks associated with the highly corrosive environment and the normal failures of the motors of the tanks. submersible pumps. Additionally, to avoid long grinding and chopping cycles, the silage pond has a set of pipes, valves and fluid impeller nozzles incorporated inside that try to agitate and recirculate the entire volume of the pond fluid, thus trying to ensure that the pulp produced be homogeneous. Examples can be found on the Internet sites of the companies Sobitec (www.sobitec.cl) and Landia (www.landiainc.com). However, a series of additional drawbacks associated with the maintenance and repair of eventual failure of the pond components persist in improved silage ponds of this type. Specifically, the overhaul and repair of the wet well grinder pump and the recirculation and transfer piping system require that the entire tank assembly and its components be disassembled and, since the pipes are welded, it is an arduous task to do in the facilities. In addition, since the valves for mixing and transferring the silage are located inside the pond and being manipulated from the outside with rods, any failure of these interrupts the silage production operation until the damage is fixed, many times requiring emptying the tank to repair, clean or replace the faulty valve.

Therefore, it would be desirable first of all to have a solution for fish silage, adaptable both to existing silage ponds as well as to new ponds with grinder pumps, which allows for the efficient processing of dead fish, including fish larger than 5 kg and even more than 5 kg. up to 8 kg or more, completely inside the pond and without risk to operators.

Additionally, it would be desirable to have a silage tank that, in addition to the above advantages, allows the silage paste to be placed in a storage tank with the same pumping equipment, minimizes component failures, and makes the maintenance of moving parts that work easier. inside the tank and that the entire unit can be assembled and disassembled in a simple and fast way for maintenance, cleaning and transport purposes where it is required to be operated.

SUMMARY OF THE INVENTION

To overcome the aforementioned deficiencies, in a first embodiment of the invention a device for primary cutting of dead fish is proposed for ensiling ponds that are provided with a mincer pump, the device being adapted to be mounted on the bottom of the pond, within the same and driven by the same pump motor. The device is designed to downsize and cut larger fish that cannot be processed by the mincing and grinding mechanism of the mincer pump.

The device comprises a body with an inner cavity open to a dead fish intake chamber formed in an extension of the body of the device, said extension of the body of the device being attached to a tube for direct feeding of dead fish from outside the pond. The body of the device further has a fluid inlet opening from the pond into the interior cavity and an outlet opening for cut fish for adhesion and connection to the grinding and mincing mechanism and to the suction of the pump, that is, the impeller. chopper of the bomb. A fish cutting mechanism composed of at least one rotary cutting tool is housed in the inner cavity. The number of cutting tools to install will depend on the operating conditions. Advantageously, the device also has at least one fixed plate in said internal cavity, arranged transversely to said cutting tool. The transverse fixed plate or plates have one or more parallel grooves for the passage of the corresponding cutting tools and comply with the function of cleaning these and the internal cavity of pieces of fish that have been dragged without cutting.

Preferably, the cutting tool (s) consist of blades with curved and pointed ends like claws and with serrated edges, adapted to tear and cut large dead fish. Conveniently the shaft of the cutting tool (s) is adapted to engage the drive shaft of the pump through the cut fish outlet opening in order to drive the cutting tool (s) with the same pump motor.

On the other hand, the fluid inlet opening is preferably oriented towards the discharge of the fluid that is recirculated by the pump so that it repeatedly re-enters the device to be thus passed through and generate the desired homogenization and concentration of silage.

The material of the complete device is preferably stainless steel. However, the cutting tools and transverse plates could be made of other hardened materials for optimal execution of the primary cut and the body of the device could be of another material resistant to chemical agents and biological matter.

The primary cutter of dead fish can be installed in existing silage ponds with submersible grinder pumps, wet well type grinder pumps and other types of grinder pumps with application for ensiling fish, or it can be installed in new ponds, preferably with a wet well grinder pump. Adapting the device to the type of pump simply requires adapting the width of the cut fish outlet opening and the coupling mechanism to the pump drive shaft, if necessary. Normally, the drive shaft of the pump ends in a male thread and an end nut, whereby the mechanism for coupling the device to said drive shaft of the pump is preferably a female thread that receives a corresponding male thread from the pump shaft.

The device allows to reduce the size and cut easily and efficiently the dead fish when they are large (for example, greater than 5 kg), even disintegrate them, without the need for additional external implements or devices. In addition, the direct feeding tube for dead fish from outside the pond forces the dead fish to enter directly into the internal cavity of the device and suction zone of the grinder pump and prevents the fish from entering the pond without being previously processed. by the device. Likewise, the fact that the primary cut-off device for dead fish is placed in the suction of the pump, in the lower part of the pond, in an area that cannot be accessed by the operator, it is possible to completely reduce the risks of occupational accidents for the personnel. who operates the equipment.

The device for the primary cutting of dead fish of the invention also has application in silage ponds with conventional pumps, not mincers, being able to perform the chopping function as well as the disintegration of large fish, although the resulting silage would be thicker in this case. and longer silage cycles than with chopper pumps.

In a second embodiment of the invention an ensiler pond is proposed that includes a device for the primary cutting of dead fish as described in the preceding lines, a wet well grinder pump, a fluid flow distribution system operated from outside the pond and a preservative metering pump and respective preservative container to produce fish silage.

The wet well chopper pump comprises a respective motor and casing with an impeller-chopper inside, a suction and a discharge, as well as a driving shaft that extends to the pump motor through a column with lubricant that encloses and protects to the shaft, and an outlet pipe attached to the discharge.

The silage pond has a lid, a bottom and one or more side walls, depending on its shape, which is preferably substantially cylindrical.

The primary dead fish cutter is mounted on the bottom of the pond, inside the pond and with the direct dead fish feed tube connected to a dead fish feed inlet in said pond lid. The cut fish outlet opening of the device is attached to the suction of the wet well mincer pump and the shaft of the at least one cutting tool of the device is coupled to the drive shaft of the pump through said outlet opening of the device. fish cut so that the pump motor drives both the pump impeller-chopper and the cutting tools of the primary dead fish cutter.

The motor of the pump is preferably an electric motor that is mounted on a base fixed to a platform arranged on the lid of the tank, in which the outlet of the discharge pipe is also located on the platform. Preferably the platform is detachably attached to the pond lid just as the primary dead fish cutter is to the bottom of the pond and the body extension of the primary dead fish cutter is to the direct feed tube. of dead fish. In this way, all the moving parts that work inside the silage pond (wet well grinder pump, device body with cutting tools) are assembled as a compact and removable unit, so their installation and Removal from the pond are simple and can be checked and repaired outside of the pond.

The fluid flow distribution system comprises a manifold installed outside the tank. The manifold has an inlet connected to the outlet pipe of the wet well grinder pump, a recirculation outlet connected to fluid agitating nozzles located inside the pond, a recirculation outlet that empties into the dead fish inlet of the silage pond lid to facilitate the feeding of dead fish to the primary cutter for dead fish and, finally, a transfer outlet directed to a fish silage storage pond to discharge the produced fish silage there in the silage pond. Control valves are located in each of these outlets to actuate the fluid flow distribution system from outside the silage tank.

The system fulfills the function of agitating and mixing the contents of the pond, generating a lubrication and thrust flow in the feeding of dead fish and, on the other hand, transferring the fish silage to a fish silage storage pond to its subsequent withdrawal to be transported to the flour and / or oil plants. In particular, by means of the recirculation pipe and agitation nozzles, the entire flow of the pump is used to agitate and mix the contents of the ensiling pond from the bottom and for the fluid to pass as many times as necessary through the primary fish cutting device. dead and the wet well grinder pump, until the desired silage homogenized paste state is obtained. Furthermore, with the same wet well grinder pump, the resulting silage can be pumped into the silage storage pond.

The system has the particularity that the elements that could present failures and that require to be actuated by the operators, such as the valves, are placed outside the silage tank. This is very important when the production sites are difficult to access because they are very remote and means are required to facilitate the maintenance of the pond and its parts.

Lastly, the complete silage pond is designed as an easily removable and re-assembled mechano in its parts for the purposes of maintenance, cleaning and transfer to fish farming sites. Thus, in addition to the wet well grinder pump and the body of the primary dead fish cutter configured as a compact removable unit, the pipes of the fluid flow distribution system can be easily disconnected from their connections to the outlet pipe. from the grinder pump, to the agitator nozzles inside the silage tank and to the storage tank. Likewise, the dosing pump is easily removable from the tank and detachable from the preservative container. For this reason, the pond is easily assembled.

It is understood that the silage pond could also have a submersible pump or other type of pump instead of a wet well pump and have a device for primary cut-off of dead fish and fluid flow distribution system adapted to this pump without implying departing from the invention, even with regard to the configuration of the pump and body of the device removable as a compact unit, since for this would only require some simple and easy structural adaptations to be implemented by any person skilled in the art.

The silage pond components are preferably adapted and dimensioned for cylindrical containers approximately 1 meter high and 1 meter in diameter. However, they can also be adapted to be mounted on existing containers of different geometries and dimensions.

Although the ensiler pond and device of the invention have been described in relation to their use in the field of fish farming, they also have application in the processing and reduction of dead chickens and turkeys and the treatment of plant waste from various industries. . In general, all processes where there is organic waste or mortality that require following a sanitary disposal procedure can use the silage pond and device of the invention. They can also be used in food processors where a lot of waste is generated with water, which can thus be chopped, homogenized and pumped to the waste processing plant, where the solids can easily be separated from the water, to be able to reuse it in the same. process.

DESCRIPTION OF THE DRAWINGS

Figure 1 is a front perspective view of the primary cutter for dead fish according to a preferred embodiment of the invention.

Figure 2 shows the body of the device of Figure 1 in the same front left perspective view to show the dead fish intake chamber.

Figure 3 shows the body of the device of Figure 1 in a right rear perspective view to show the side fluid inlet opening.

Figure 4 is a general left front perspective view of the silage pond according to a preferred embodiment of the invention.

Figure 5 shows the same pond and view of Figure 4 without part of its wall or the motor of the wet well grinder pump or the pump and the dosing tank to better visualize the elements of the tank, particularly those that are arranged in its interior and more particularly the device for the primary cut-off of dead fish and the wet well grinder pump that are part of the pond. Figure 6 shows the same pond of Figure 5 in a right rear perspective view to show in more detail the fluid flow distribution system that is part of the equipment.

Figure 7 shows the compact unit that forms the primary dead fish cutter (without the direct dead fish feed tube) and the wet well grinder pump (without the motor) in a situation where it has been removed from the pond. ensiler of Figure 4 and disconnected from the fluid flow distribution system.

The invention is described in detail below, relating it to the figures.

DETAILED DESCRIPTION OF THE INVENTION

According to the example of Figures 1 to 3, the primary cutting device for dead fish (2) for silage ponds (1; see Figures 4 to 7) of the invention comprises a substantially vertical cylindrical body (2.1) with a cavity interior with a fish cutting mechanism (not shown) in said cavity. The body of the device has a lateral extension (2.2) and a dead fish intake chamber (2.2.1) formed inside said extension, the interior cavity of the body being open to said dead fish intake chamber. The extension (2.2) of the body of the device is in turn attached detachably to a tube for direct feeding of dead fish (2.3) from outside the pond.

In addition, the body of the device has a lateral fluid inlet opening (2.1.1) from the pond into the inner cavity and a cut fish outlet opening (2.1.2) in its upper part (or upper base of its shape cylindrical) that is attached to the suction of a grinder pump mountable on top of the device, inside the pond.

The fish cutting mechanism is composed of at least one horizontal rotary cutting tool that is housed in the interior cavity of the body of the device and that rotates around a vertical axis (2.4) coinciding with the axis of the cylindrical body. The fish cutting mechanism also comprises at least one fixed plate transverse to said at least one cutting tool, in which the fixed transverse plate or plates are arranged vertically in the cavity and radially to the cylindrical body and in which the one or more Fixed transverse plates comprise one or more parallel grooves for the passage of corresponding cutting tools in order to be able to clean them of pieces of fish dragged without mincing and thus avoid that these pieces of fish can hinder or hinder the process of size reduction and fish cutting performed by the device. Furthermore, the shaft (2.4) of the at least one rotary cutting tool is conveniently configured to be coupled to the drive shaft of the chopper pump (not shown) to be driven by the same chopper pump motor. In the example of the invention shown in Figures 1 to 3, the direct feeding tube for dead fish (2.3) is a vertical tube (2.3.1) with a funnel-shaped upper part (2.3.2) through which they enter dead fish and a lower elbow (2.3.3) that is attached to the extension (2.2) of the cylindrical body of the device and connected to the dead fish intake chamber (2.2.1). For easy assembly and disassembly, the way of joining between the direct feeding tube of dead fish and the extension of the device body is in the example shown of the flange and grooved type - grooved frame (2.2.2) in the extension of the device. body inserted into a rectangular flange (2.3.4) at the elbow end of the tube - but it could be by any other suitable method known for the same purpose.

Turning now to Figures 4 to 7, the ensiling pond (1) according to a preferred example of the second embodiment of the invention includes a primary cutter for dead fish (2) as described in the preceding lines, a wet well grinder pump (3), a fluid flow distribution system (4) operated from the outside and a preservative metering pump (5) and respective preservative container (6).

In the example of the figures, the silage tank is a rigid container, preferably made of stainless steel, substantially cylindrical, with a lid (1.1), a bottom (1.2) and a side wall (1.3) corresponding to the cylindrical mantle. It also has a dead fish feeding opening (1.4) in said lid and a discharge (1.5) located on the perimeter of the pond bottom to empty and clean the pond.

The wet well grinder pump has its respective motor (3.1) and a casing (3.2) with a suction, an impeller-chopper and a discharge, as well as a drive shaft that extends from the impeller-chopper to the pump motor at through a column (3.3) with lubricant that encloses and protects the shaft. The wet well grinder pump also has an outlet pipe (3.4) connected to the discharge.

In the example of the figures, the motor (3.1) is an electric motor although it could also be a hydraulic motor or of another type suitable for installation and use in the silage pond. The motor is mounted on a base (3.5) fixed to a platform (3.6) detachably attached, for example, by screws, to a cutout in the lid of the silage tank. The outlet pipe of the wet well grinder pump also has its outlet (3.7) in said platform.

The primary dead fish cutter (2) is removably installed on the bottom (1.2) of the pond, inside the pond and with the direct dead fish feed tube (2.3) connected to the fish feed opening dead (1.4) from the pond lid. The casing (3.2) of the wet well grinder pump (3) is in turn mounted on the body (2.1) of the primary cutter for dead fish (2) so that the outlet opening of the body of the device is attached and in direct connection with the suction of the wet well grinder pump. The axis of rotation of the cutting tools of the device is coupled to the drive shaft of the pump, the coupling mechanism being, as seen at the end of the shaft (2.4), a female thread that receives a corresponding male thread from the shaft of the bomb. In this way the motor drives both the impeller of the wet well grinder pump and the cutting tools of the primary dead fish cutter.

The fluid flow distribution system (4) comprises a multiple pipe (4.1, 4.2, 4.3) installed outside the silage tank. The multiple pipe has an inlet (4.1) connected to the outlet pipe (3.4) of the wet well grinder pump, a recirculation outlet (4.2) connected to fluid agitating nozzles (4.5) located inside the pond, a lubrication outlet (4.3) that empties into the dead fish inlet of the ensiler pond in order to facilitate the feeding of dead fish to the primary cutter for dead fish and, finally, a transfer outlet (4.4) directed to the silage pond. fish silage storage (not shown) to discharge the fish silage produced in the ensiling pond thereto. Control valves (4.6) are located in each of these outlets, one of them being strategically oriented towards the lateral fluid inlet opening (2.1.1).

Since the platform on which the motor base is attached is removably attached to the pond cover, the primary dead fish cutter is also removably installed at the bottom of the pond and the body extension The device is detachably attached to the direct dead fish feed tube, the assembly consisting of the wet well grinder pump and the body of the primary dead fish cutter can be pulled out as a compact unit through the cutout in the lid of the silage tank, after previously disassembling the motor from its base, as shown in Figure 7. It is enough to loosen the platform bolts and the complete unit is removed to the outside where it can be easily disassembled for maintenance, repair. or transfer.

Claims

1. A primary cutter for dead fish for silage ponds which are provided with a mincer pump with a casing with an impeller, a suction and a discharge, in addition to a motor and a driving shaft, the device being configured to be driven by the same motor of the mincer pump, characterized in that the device comprises a body with an inner cavity open to a dead fish intake chamber formed in an extension of the body of the device, said extension of the body of the device being attached to a tube direct feeding of dead fish from the outside of the ensiling pond, in which the body of the device also has a fluid inlet opening from the ensiling pond into the interior cavity and an outlet opening for cut fish attached to the suction of the pump , in which a fish cutting mechanism composed of at least one cutting tool is arranged inside the interior cavity. and rotatable around an axis that can be coupled to the drive shaft of the pump through the cut fish outlet opening and at least one fixed plate arranged transversely to said cutting tool and provided with one or more parallel grooves for the passage of the corresponding cutting tools to clean these of fish pieces that have been dragged without cutting.

2. The device of claim 1, characterized in that the at least one cutting tool consists of blades with curved and pointed ends and serrated edges, adapted to cut and tear dead fish of 5 kg or greater size.

3. The device of claim 3, characterized in that when the drive shaft of the pump ends in a male thread with an end nut, the axis of rotation of the at least one cutting tool is coupled to said drive shaft by means of a thread female that receives said male thread from the pump shaft.

The device of claim 1, characterized in that the direct feeding tube for dead fish is a vertical tube with an upper part in the shape of a funnel through which the dead fish are entered and a lower elbow that is attached to the extension of the body. from the device and connected to the dead fish intake chamber.

The device of claim 4, characterized in that the connection between the extension of the body of the device and the direct feeding tube of dead fish is by means of a grooved frame in the extension of the body inserted in a rectangular flange at the end of the pipe elbow.

The device of claim 1, characterized in that the body is vertical cylindrical in shape having the extension of the body and the fluid inlet opening located laterally in the cylindrical body and the cut fish outlet opening located in the upper base of the cylindrical shape, in which the axis The rotation of the at least one cutting tool coincides in location with the axis of the cylinder and the at least one fixed plate is arranged vertically within the cavity and radially in the cylindrical body.

7. A silage pond, characterized in that it includes:

- a primary cutter for dead fish according to claim 1;

- a wet well grinder pump, wherein the discharge of the wet well grinder pump is attached to a fluid outlet pipe;

- a fluid flow distribution system operated from outside the silage tank; and

- a preservative dosing pump and respective preservative container to produce fish silage; in which the silage pond has a lid, a bottom and one or more side walls, depending on its shape; wherein the primary dead fish cutter is mounted at the bottom of the pond, inside the pond, and below the wet well grinder pump; wherein the direct dead fish feed tube of the primary dead fish cutter is connected to a dead fish inlet in the lid of the ensilage pond; wherein the cut fish outlet opening of the body of the primary fish cutter is attached to the suction of the wet well mincer pump and the shaft of the at least one rotary cutter of the primary fish cutter dead is coupled to the driving shaft of the wet well mincer pump through said cut fish outlet opening to be driven by the same motor of the wet well mincer pump; wherein the fluid flow distribution system comprises a manifold installed outside the silage pond; in which the multiple pipe has an inlet connected to the outlet pipe of the wet well grinder pump, a recirculation outlet connected to fluid agitating nozzles located inside the ensiler pond, a lubrication outlet that flows into the inlet of dead fish from the ensiler pond to facilitate the feeding of dead fish to the primary cutter of dead fish and a transfer outlet directed to a silage storage pond to discharge into the same the fish silage produced in the ensiler pond; and in which the multiple pipe also has control valves located in each of the outlets to select the fluid flow towards agitation and recirculation, lubrication or transfer.

The silage pond of claim 7, characterized in that the body of the primary dead fish cutter and the direct dead fish feed tube are removably connected to each other, in which the motor of the wet well grinder pump is mounted on a base fixed to a platform detachably attached to a cut-out in the lid of the silage pond and the outlet pipe of the wet well grinder pump also has its outlet on said platform, and in addition to the primary cut-off device of Dead fish is removably attached to the bottom of the silage pond.

The ensiling pond of claim 8, characterized in that the wet well grinder pump and the body of the primary dead fish cutter form a removable assembly as a compact unit through a cutout in the lid of the ensiling pond after previous remove the motor from its base.

The ensiling pond of claim 8, characterized in that the direct dead fish feed tube has a funnel-shaped upper part and a lower elbow, wherein the body of the primary dead fish cutter and the feed tube Dead fish feed tubes are removably linked together by a ribbed frame of the body extension inserted into a rectangular flange on the lower elbow of the dead fish feed tube.