CN210875509U

CN210875509U - Dead fish of sick fish and pond mud processing system

Info

Publication number: CN210875509U
Application number: CN201920613843.7U
Authority: CN
Inventors: 李勇; 刘湘; 李望东; 于方兆; 盘润洪; 陈创华; 古群红; 陈就; 郭建谊; 骆明飞; 刘强; 丁唯
Original assignee: Zhuhai Modern Agriculture Development Center Management Committee Of Taiwan Farmer Pioneer Park Jinwan District Zhuhai City Research And Extension Center Of Agriculture And Fishery
Current assignee: Zhuhai Modern Agriculture Development Center Management Committee Of Taiwan Farmer Pioneer Park Jinwan District Zhuhai City Research And Extension Center Of Agriculture And Fishery
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-06-30
Anticipated expiration: 2029-04-29

Abstract

The utility model discloses a system for treating dead fish and pond sludge of diseased fish, which comprises a drying device, a pretreatment device and a crushing device; the pretreatment device is used for receiving and scattering a mixture of dead fish of diseased fish and pond sludge, and the drying device is provided with a drying group capable of conveying and drying the mixture; the crushing apparatus is provided with a crushing group for pre-crushing the mixture, a sieving group for separating dead fish of diseased fish and pond sludge, and a fine crushing group for processing the dead fish of diseased fish into particles. The system for treating the fish died of the diseased fish and the pond sludge can scatter the mixture of the fish died of the diseased fish and the pond sludge by utilizing the pretreatment device, so that the drying group can conveniently dry the fish died of the diseased fish and the pond sludge; then utilize crushing group to carry out the pre-crushing dead fish of sick fish that has dried or pond mud, especially can press off internal skull and the main bone of the dead fish of sick fish, conveniently carry out processing on next step, the fish that dies of sick fish can be separated with pond mud with the group that sieves, realizes categorised recycle, and the finely-crushed group can be processed into the granule with the dead fish of sick fish after the stoving well, conveniently carries out recycle.

Description

Dead fish of sick fish and pond mud processing system

Technical Field

The utility model relates to an aquaculture technical field especially relates to a dead fish of sick fish and pond mud processing system.

Background

Aquaculture plays a significant role in national economy as an important branch of agricultural development. Aquaculture must depend on water areas such as ponds, reservoirs, rivers, lakes or oceans, but river or ocean aquaculture has little limitation due to geographical location and can only be performed in rivers and near shorelines. The inland area in China is huge, and inland far away from rivers and oceans mostly adopt ponds and reservoirs for aquaculture, and the aquaculture also accounts for most of aquaculture in China.

Aquaculture is carried out in ponds and reservoirs, except that the aquaculture is easily influenced by the weather, most of aquaculture is carried out in small water areas, so that the problem that a large number of fishes die of diseases and fish death due to water quality problems easily occurs. At present, most of the dead fish treatment modes of the diseased fish are land-filled in a pollution-free mode, and basically the method comprises the steps of digging a pit in the land-filled area, scattering lime powder, paving a layer of the dead fish, then scattering the lime powder, and repeating the steps for multiple times until the pit is filled or the land-filled area is filled. The efficiency of treating the dead fish with the disease fish by the pollution-free treatment mode is very low, natural degradation needs to be realized, most of the fish can be degraded in more than 2 years generally, however, the period of aquaculture is short compared with the degradation period, and some fish varieties can be harvested once a year, so that the requirement of culture is generally difficult to meet by the landfill mode for treating the dead fish with the disease fish. Meanwhile, the breeding efficiency is improved mostly by feeding feed in the breeding process, so ponds and reservoirs in breeding water areas need to be cleaned frequently, pond sludge deposited on the bottom of the pond is easy to breed bacteria and parasites, and then the depositing amount of the pond sludge is very large due to the continuity of breeding, so that how to treat and utilize the pond sludge is a main breakthrough direction of aquaculture at present.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a simple structure, which can effectively recycle the dead fish of the sick fish and the pond sludge.

The utility model provides a technical scheme that its technical problem adopted does:

a system for treating dead fish and pond sludge, comprising:

the pretreatment device is used for receiving and scattering a mixture of dead fish of diseased fish and pond sludge;

the drying device is provided with a drying group which can convey and dry the mixture; and

a crushing device provided with a crushing group for pre-crushing the mixture, a sieving group for separating dead fish of diseased fish and pond sludge, and a fine crushing group for processing the dead fish of diseased fish into particles;

wherein the fine crushing group can supply the particles of the dead fish of the diseased fish as fuel to the drying group.

As an improvement of the technical scheme, the crushing group comprises a pair of freely rotating rollers and a plurality of pressing teeth arranged on the working surfaces of the rollers, and the two groups of rollers can be matched with each other to crush hard objects in pond sludge and/or fishbones of dead fishes of diseased fishes.

As an improvement of the technical scheme, a conveying gap is arranged between the pressing teeth matched with each other on the two groups of rotating rollers, one input side of the conveying gap is connected with the conveying group through a conveying belt, and one output side of the conveying gap is connected with the screen group through a conveying channel; and guide structures are arranged on two sides of one end, close to the conveying gap, of the conveying channel, close to the rotating rollers, and can peel off dead fish and pond sludge stuck on the pressing teeth.

As an improvement of the technical scheme, the fine crushing group comprises a shell, a primary crushing cavity arranged in the shell and a secondary crushing cavity arranged at the discharge end of the primary crushing cavity; a cutting assembly for segmenting the dead fish of the diseased fish is arranged at the feed end of the primary crushing cavity, a primary crushing wheel is arranged in the primary crushing cavity, a secondary crushing wheel is arranged in the secondary crushing cavity, and the discharge end of the secondary crushing cavity is connected with a collecting box for collecting the crushed particles of the dead fish of the diseased fish; the collecting box is provided with at least one output end, and one output end of the collecting box conveys the fish meal crushed particles which are dead of the diseased fish to the drying group through the conveying belt.

As an improvement of the technical scheme, a suction assembly is arranged on the feeding side wall of the primary crushing cavity and can be used for sucking out fly ash in the primary crushing cavity, and the suction assembly is communicated with a recovery box of the sieving group through a pipeline.

As an improvement of the technical scheme, the sieving group comprises a closed cover, a first-stage sieve screen connected with the conveying channel, a second-stage sieve screen arranged at the output end of the first-stage sieve screen, and a recovery box arranged below the first-stage sieve screen and the second-stage sieve screen; driving structures are arranged in the closed cover at positions corresponding to the first-stage screen and the second-stage screen, and the driving structures can drive the first-stage screen and the second-stage screen to vibrate, sieve and dry dead fish of diseased fish in a reciprocating manner; and the output end of the secondary screen is communicated with the input end of the fine crushing group.

As an improvement of the technical scheme, the pretreatment device comprises a feeding assembly and a scattering assembly for scattering a mixture of dead fish of diseased fish and pond sludge, wherein the feeding assembly can convey the mixture to a feeding port at the upper end of the scattering assembly; the scattering assembly comprises a scattering tank, a rotating shaft and cutters, wherein the rotating shaft is rotatably arranged in the scattering tank, the cutters are arranged on the rotating shaft, the rotating shaft is transversely arranged, a plurality of groups of cutters are arranged, and a driving motor for driving the rotating shaft to rotate is arranged in the scattering tank; the lower extreme of breaking up the jar is provided with the discharge gate, the discharge gate intercommunication stoving group.

As an improvement of the above technical scheme, the drying group comprises a drying box body, a conveyor belt arranged in the drying box body and a combustion chamber arranged at the bottom of the drying box body; a hot air channel is arranged in the drying box body, the input end of the hot air channel is connected with the combustion chamber, and the hot air channel can spray hot air to the conveyor belt; the conveying belts are arranged in a plurality of groups and are distributed in a snake-shaped stacked manner, the uppermost conveying belt is arranged at the upper part of the drying box body, and the input end of the uppermost conveying belt is connected with the output end of the pretreatment device; the conveyor belt at the lowest layer is arranged above the combustion chamber, and the output end of the conveyor belt is connected with the input end of the crushing group.

As an improvement of the technical scheme, a partition plate is arranged between the combustion chamber and the conveyor belt at the lowest layer, and one output end of the fine crushing group can convey particles of the dead fish of the diseased fish to the combustion chamber as fuel; the hot air channel is arranged on the side wall of the drying box body, and a nozzle is arranged on one side, close to the conveyor belt, of the hot air channel.

As an improvement of the above technical scheme, a purification assembly for purifying waste gas in the drying box body is arranged on one side of the drying box body, the purification assembly comprises a purification chamber, a filter screen layer, an active carbon adsorption layer and an ozone generator, and the purification chamber is arranged on one side of the drying box body and is communicated with the drying box body through a negative pressure suction pipeline; be provided with the dust chamber that is used for collecting the dust in the clean room, filter screen layer sets up on the output in dust chamber, and one side that the clean room is located the dust chamber is provided with the deodorization chamber, and ozone generator installs in the deodorization chamber, the deodorization chamber is provided with the gas outlet with external intercommunication, and the active carbon adsorption layer sets up in the gas outlet.

The beneficial effects of the utility model are that:

the system for treating the fish died of the diseased fish and the pond sludge can scatter the mixture of the fish died of the diseased fish and the pond sludge by utilizing the pretreatment device, so that the drying group can conveniently dry the fish died of the diseased fish and the pond sludge; then utilize crushing group to carry out the pre-crushing dead fish of sick fish that has dried or pond mud, especially can press off internal skull and the main bone of the dead fish of sick fish, conveniently carry out processing on next step, reduce the internal skull of the dead fish of sick fish and main bone to the harm of crushing apparatus, the group of sieving can effectively separate the dead fish of sick fish and pond mud, realize categorised recycle, and the smart group can be processed into the granule with the dead fish of sick fish after drying well, conveniently recycle, and the smart group can provide fuel to the stoving group, realize that low energy consumption lasts nature handles dead fish of sick fish and pond mud.

Drawings

The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:

fig. 1 is a front view of an embodiment of the present invention;

fig. 2 is a top view of an embodiment of the invention;

FIG. 3 is a schematic diagram of the internal structure of the pretreatment apparatus according to an embodiment of the present invention;

fig. 4 is a schematic view of the internal structure of the drying device in the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a crushing device in an embodiment of the present invention.

Detailed Description

Referring to fig. 1 to 5, the utility model discloses a dead fish of sick fish and pond sludge processing system, include: the device comprises a pretreatment device 1, a drying device 2 and a crushing device 3, wherein the pretreatment device 1 is used for receiving and scattering a mixture of dead fish of diseased fish and pond sludge; the drying device 2 is provided with a drying group 21 which can convey and dry the mixture; a crushing apparatus 3 provided with a crushing group 31 for pre-crushing the mixture, a sieving group 32 for separating dead fish of diseased fish and pond sludge, and a fine crushing group 33 for processing the dead fish of diseased fish into particles; wherein the refining group 33 can supply the particles of the dead fish of the diseased fish as fuel to the drying group 21. It should be noted that the situation that the refining group 33 supplies fuel to the drying group 21 can be realized only by treating dead fish, so that only pond sludge is treated while external energy is used as power for the drying group 21, and the energy consumption is relatively high. When only diseased fish and dead fish or diseased fish and pond sludge are treated simultaneously, the finely-crushing group 33 can burn the treated particles of the diseased fish and dead fish as fuel to provide all or part of heat energy for the drying group 21. Of course, the pond sludge may be separately treated in the present application only if the refining group 33 cannot supply the fuel to the drying group 21.

Referring to fig. 1, 2 and 3, in the present application, the main purpose of the pretreatment device 1 is that the drying device 2 for subsequent processing can dry a mixture of dead fish and pond sludge with minimal energy consumption. Therefore, the fish dying of the diseased fish is separated from the pond sludge, or the fish dying of the diseased fish and the pond sludge are cut into small pieces, and even the fish dying of the diseased fish is scratched, so that the drying efficiency can be effectively improved. Therefore, in the present application, the pretreatment device 1 comprises a feeding assembly 11 and a scattering assembly 12 for scattering the mixture of the dead fish of the diseased fish and the pond sludge, wherein the feeding assembly 11 can convey the mixture to an upper end feeding port of the scattering assembly 12; the scattering assembly 12 comprises a scattering tank 121, a rotating shaft 122 rotatably mounted in the scattering tank 121 and cutters 123 arranged on the rotating shaft 122, the rotating shaft 122 is transversely arranged, a plurality of groups of cutters 123 are arranged, and a driving motor for driving the rotating shaft 122 to rotate is arranged in the scattering tank 121; the lower end of the scattering tank 121 is provided with a discharge port which is communicated with the drying group 21. It is apparent that the most important function of the cutter 123 is to cut the pond sludge into small pieces or to cut the dead fish into sections or to scratch the dead fish. In practical situations, the pond sludge is soft in texture and relatively easy to cut, and dead fish, except for the adhesion of fish meat, mainly have the hardness of main bones matched with the fish meat, and generally, the conventional rotary cutter is not easy to cut. Of course, it is best to cut off dead fish, so that the drying group 21 can conveniently dry the dead fish thoroughly.

Certainly in order to reduce operation requirement and equipment cost, the effect of cutter 123 only need reach and carry out the mar on the fish body to the dead fish of sick fish in this application can. Consequently rotation axis 122 is provided with two sets ofly in this application, and parallel arrangement, is provided with the clearance between the two, when material loading subassembly 11 carries out the material loading, after the mixture falls from breaing up jar 121 top, the mixture can fall and fall into on two sets of rotation axes 122, can guarantee through the control rotational speed that each sick fish and the dead fish all be beaten by cutter 123 on the health and leave and the incision, can beat the pond mud part on the dead fish of sick fish body simultaneously. It should be noted that, in the present application, it is apparent that the sludge is not treated in a fluid state when the sludge is treated, and the drying cost is too large for the treatment, so the treated sludge is in a solidified state. In general, it is unlikely that a large number of diseased and dead fish will occur simultaneously, already at the time of harvesting, but of course the special case of multiple separate waters being treated simultaneously with the above-mentioned mixture is not excluded. In actual production, usually, the dead fish of sick fish or pond mud are collected in advance, then just carry out centralized processing, therefore material loading subassembly 11 still is provided with the hopper 111 and a conveyer belt of accepting above-mentioned mixture, and the conveyer belt is installed on a frame 112 that climbs, and conveyer belt cooperation hopper 111 can realize that the dead fish of sick fish carry one by one, or pond mud carries piece by piece, and this concrete structure is very generally practical in current transport structure, therefore this application does not do not detailed description.

Referring to fig. 1, 2 and 4, the drying group 21 includes a drying cabinet 211, a conveyor belt 212 disposed in the drying cabinet 211, and a combustion chamber 213 disposed at the bottom of the drying cabinet 211; a hot air channel 214 is arranged in the drying box body 211, the input end of the hot air channel 214 is connected with the combustion chamber 213, and the hot air channel 214 can spray hot air to the conveyor belt 212; the conveying belts 212 are arranged in a plurality of groups and distributed in a snake-shaped stacked manner, the uppermost conveying belt 212 is arranged at the upper part of the drying box body 211, and the input end of the uppermost conveying belt 212 is connected with the output end of the pretreatment device 1; the lowermost conveyor belt 212 is arranged above the combustion chamber 213 and has its output end connected to the input end of the crushing group 31. It should be noted that, because the use environment of the conveyor belt 212 is a high-temperature environment, the conveyor belt 212 is a metal mesh chain conveyor belt, which can ensure the transportation of the materials and the use in the high-temperature environment.

A partition plate is arranged between the combustion chamber 213 and the lowest layer of the conveyor belt 212, and one output end of the fine crushing group 33 can convey the particles of the dead fish of the diseased fish to the combustion chamber 213 as fuel; the hot air channel 214 is arranged on the side wall of the drying box body 211, and a nozzle is arranged on one side of the hot air channel 214 close to the conveyor belt 212. In the present application, a fan is disposed in the hot air passage 214, and the hot air passage 214 is distributed in a serpentine shape on a side wall of the drying cabinet 211 and is parallel to the conveyor belt 212. In the present application, the conveyor belt 212 is conveyed from the lower side, and the high temperature air conveyed by the hot air path 214 is reversely dried on the mixture on the conveyor belt 212, so that the heat can be effectively utilized. In the present case, the combustion chamber 213 is designed to accommodate the fuel, but in special cases, the combustion chamber 213 can also be heated by electrical energy, so that a corresponding heating circuit can be provided. Because the technology is relatively mature, the electric heating technology which is common in the market is only needed. In order to reduce the energy consumption in this application, the combined structure of the burning of preferred fuel and electric energy is provided with fire prevention brick and insulating layer promptly on the inner wall of combustion chamber, buries the heating rod underground in the fire prevention brick, both can protect the flame under the fuel burning state to damage the heating rod like this.

Because the taste of the dead fish of sick fish is comparatively amazing, the foul smell is stronger, even dry and also have the stink, easy contaminated air, for the pollution abatement better, this application is in one side of stoving box 211 is provided with the purification subassembly 22 that is used for purifying stoving box 211 interior waste gas. Wherein, the purification assembly 22 comprises a purification chamber 221, a filter screen layer 222, an activated carbon adsorption layer 223 and an ozone generator 224, the purification chamber 221 is installed at one side of the drying box body 211 and is communicated with the drying box body 211 through a negative pressure suction pipeline 225; a dust cavity 226 used for collecting dust is arranged in the purification chamber 221, the filter screen layer 222 is arranged at the output end of the dust cavity 226, a deodorization cavity 227 is arranged on one side of the purification chamber 221, which is located at the dust cavity 226, the ozone generator 224 is arranged in the deodorization cavity 227, the deodorization cavity 227 is provided with an air outlet 228 communicated with the outside, and the activated carbon adsorption layer 223 is arranged in the air outlet 228.

Because the negative pressure suction pipeline 225 is communicated with the drying box body 211, a negative pressure fan is arranged in the negative pressure suction pipeline 225, and certainly, in order to reduce dust in the gas, a filter screen is arranged at the inlet of the negative pressure suction pipeline 225, so that flying dust can be reduced for the first time. The dust chamber 226 is provided to reduce the deposition in the later process to a certain extent. Because the dried dead fish in the drying box body 211 is biomass containing sulfur or phosphorus, the biomass is mostly stink after rotting, and the main gas is hydrogen sulfide, therefore, in order to better remove the gas generated after rotting, the ozone generated by the ozone generator 224 in the deodorization cavity 227 can well oxidize the gas such as hydrogen sulfide, and the stink is reduced. The activated carbon adsorption layer 223 in the gas outlet 228 serves as the final adsorption object in order to fully meet the overall emission standards.

Referring to fig. 1, 2 and 5, in the present application, since the hardness of the dried dead fish and pond sludge becomes high, especially the dried fish obtained after drying, the dried fish becomes hard as a whole and has certain toughness due to the drying of the biomass. And the individual size of these dead fishes is different, if directly carry out fine crushing with these dried fish, the bone in the big fish must block crushing apparatus easily, and the bone in the big fish can become very hard after drying moreover, consequently breaks up crushing tooth with crushing apparatus easily, damages equipment. Therefore, the crushing group 31 is used for pre-breaking the fishbone in the dried fish. Wherein, the crushing group 31 comprises a pair of rotatable rollers 311 and a plurality of pressing teeth 312 arranged on the working surface of the rollers 311, and the two groups of rollers 311 can be matched with each other to crush hard objects in pond sludge and/or fish bones of dead fish of diseased fish. For better movement and efficiency improvement, a conveying gap 313 is arranged between the mutually matched press teeth 312 on the two groups of rotating rollers 311, one input side of the conveying gap 313 is connected with the conveying group through a conveying belt, and one output side of the conveying gap 313 is communicated with the sieving group 32 through a conveying channel 314; the end of the conveying channel 314 close to the conveying gap 313 is provided with a guide structure 315 close to both sides of the roller 311, and the guide structure 315 can peel off dead fish and pond sludge stuck on the pressing teeth 312. The guiding structure 315 can well strip the dead fish and pond sludge from the pressing teeth 312, in this embodiment, the pressing teeth 312 are strip-shaped and are distributed on the outer wall of the rotating roller 311 along the axial direction of the rotating roller 311 or in a spiral shape. The main bones and the skull of the dried fish are effectively broken by the pressing teeth 312 on the adjacent rotating rollers 311, so that the crushing processing at the later stage is facilitated.

In order to better improve the purity of the dried fish after being crushed in the later period and improve the utilization rate, the screening group 32 in the present application comprises a closed cover 322, a primary screen 323 connected with the conveying channel 314, a secondary screen 324 arranged at the output end of the primary screen 323, and a recycling bin 321 arranged below the primary screen 323 and the secondary screen 324; driving structures 325 are arranged in the closed cover 322 at positions corresponding to the first-stage screen 323 and the second-stage screen 324, and the driving structures 325 can drive the first-stage screen 323 and the second-stage screen 324 to vibrate, sieve and dry dead fish of diseased fish in a reciprocating manner; the output of the secondary screen 324 is in communication with the input of the reduction group 33. While vibrating, the sludge on the surface of the dried fish can fall off well, meanwhile, the pond sludge and the dried fish can be separated, and the pond sludge particles can directly fall into the recovery tank 321. The pond sludge contains high organic matters and is ideal organic soil for garden planting, so that the pond sludge can be recovered. And the recovery box 321 that first grade screen cloth 323 and second grade screen cloth 324 correspond in this application retrieves the pond mud of different particle sizes respectively, can directly distinguish the later stage packing of being convenient for. In the present application, drive configuration 325 may be a cam configuration that is driven by a motor to force the reciprocating motion of primary screen 323 and secondary screen 324. The design of the closed hood 322 can effectively meet the flying of flying dust in the bottom sieving process.

Furthermore, the fine crushing group 33 comprises a shell 331, a primary crushing cavity 332 arranged in the shell 331 and a secondary crushing cavity 333 arranged at the discharge end of the primary crushing cavity 332; a section cutting assembly 334 for segmenting diseased fish and dead fish is arranged at the feed end of the primary crushing cavity 332, a primary crushing wheel 335 is mounted in the primary crushing cavity 332, a secondary crushing wheel 336 is mounted in the secondary crushing cavity 333, and the discharge end of the secondary crushing cavity 333 is connected with a collecting box 337 for collecting the fish powder particles generated by the diseased fish and dead fish; the collecting box 337 is provided with at least one output end, and one output end of the collecting box 337 conveys the fish powder particles dying of diseased fish to the drying group 21 through a conveying belt. The structural design that segmentation subassembly 334 motor drive lift lead screw and drive the cutter and go up and down in this application is provided with the blade holder at the operating position of cutter of course and assists and cuts off the dried fish. The crushing difficulty of the whole dried fish is reduced. The multistage crushing structure is adopted, so that the damage of the crushing wheel can be well avoided, and the crushing efficiency is improved.

In addition, the side wall of the feeding of the primary crushing chamber 332 is provided with a suction assembly 338, the suction assembly 338 can suck out fly ash in the primary crushing chamber 332, and the suction assembly 338 is communicated with the recovery tank 321 of the screening group 32 through a pipeline. The suction assembly 338 can recycle the fly ash from the primary crushing chamber 332 to reduce deposition. Of course, the secondary crushing chamber 333 may be provided, but the secondary crushing chamber 333 is connected with the collection box 337, so that the arrangement is of little significance.

The system for treating the fish died of the diseased fish and the pond sludge can scatter the mixture of the fish died of the diseased fish and the pond sludge by utilizing the pretreatment device 1, so that the drying group 21 is convenient to dry; then utilize crushing group 31 to carry out the pre-crushing dead fish of sick fish that has dried or pond mud, especially can press off internal skull and the main bone of the dead fish of sick fish, conveniently carry out processing on next step, reduce the internal skull of the dead fish of sick fish and main bone to the harm of crushing apparatus, group 32 that sieves can effectively separate the dead fish of sick fish and pond mud, realize categorised recycle, and refined crushing group 33 can be processed into the granule with the dead fish of sick fish after drying well, conveniently recycle, and refined crushing group 33 can provide fuel to stoving group 21, realize that low energy consumption continuation handles dead fish of sick fish and pond mud.

The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.

Claims

1. A system for treating dead fish and pond sludge, comprising:

2. The system for treating dead fish and pond sludge of diseased fish according to claim 1, wherein: the crushing group comprises a pair of freely rotating rollers and a plurality of pressing teeth arranged on the working surfaces of the rollers, and the two groups of rollers can be matched with each other to crush hard objects in pond sludge and/or bones of dead fish of diseased fish.

3. The system for treating dead fish and pond sludge of diseased fish according to claim 2, wherein: a conveying gap is arranged between the pressing teeth matched with each other on the two groups of rotating rollers, one input side of the conveying gap is connected with the conveying group through a conveying belt, and one output side of the conveying gap is connected with the screen group through a conveying channel; and guide structures are arranged on two sides of one end, close to the conveying gap, of the conveying channel, close to the rotating rollers, and can peel off dead fish and pond sludge stuck on the pressing teeth.

4. The system for treating dead fish and pond sludge of diseased fish according to claim 2, wherein: the fine crushing group comprises a shell, a primary crushing cavity arranged in the shell and a secondary crushing cavity arranged at the discharge end of the primary crushing cavity; a cutting assembly for segmenting the dead fish of the diseased fish is arranged at the feed end of the primary crushing cavity, a primary crushing wheel is arranged in the primary crushing cavity, a secondary crushing wheel is arranged in the secondary crushing cavity, and the discharge end of the secondary crushing cavity is connected with a collecting box for collecting the crushed particles of the dead fish of the diseased fish; the collecting box is provided with at least one output end, and one output end of the collecting box conveys the fish meal crushed particles which are dead of the diseased fish to the drying group through the conveying belt.

5. The system for treating dead fish and pond sludge of diseased fish according to claim 4, wherein: the lateral wall of one-level crushing chamber feeding is provided with the suction subassembly, the suction subassembly can be taken the fly ash in one-level crushing chamber out, the suction subassembly passes through the return tank intercommunication of pipeline with crossing sieve group.

6. The system for treating dead fish and pond sludge of diseased fish according to claim 3, wherein: the screening group comprises a closed cover, a primary screen connected with the conveying channel, a secondary screen arranged at the output end of the primary screen and a recovery box arranged below the primary screen and the secondary screen; driving structures are arranged in the closed cover at positions corresponding to the first-stage screen and the second-stage screen, and the driving structures can drive the first-stage screen and the second-stage screen to vibrate, sieve and dry dead fish of diseased fish in a reciprocating manner; and the output end of the secondary screen is communicated with the input end of the fine crushing group.

7. The system for treating dead fish and pond sludge of diseased fish according to any one of claims 1 to 6, wherein: the pretreatment device comprises a feeding assembly and a scattering assembly for scattering a mixture of dead fish of diseased fish and pond sludge, wherein the feeding assembly can convey the mixture to a feeding port at the upper end of the scattering assembly; the scattering assembly comprises a scattering tank, a rotating shaft and cutters, wherein the rotating shaft is rotatably arranged in the scattering tank, the cutters are arranged on the rotating shaft, the rotating shaft is transversely arranged, a plurality of groups of cutters are arranged, and a driving motor for driving the rotating shaft to rotate is arranged in the scattering tank; the lower extreme of breaking up the jar is provided with the discharge gate, the discharge gate intercommunication stoving group.

8. The system for treating dead fish and pond sludge of diseased fish according to any one of claims 1 to 6, wherein: the drying group comprises a drying box body, a conveyor belt arranged in the drying box body and a combustion chamber arranged at the bottom of the drying box body; a hot air channel is arranged in the drying box body, the input end of the hot air channel is connected with the combustion chamber, and the hot air channel can spray hot air to the conveyor belt; the conveying belts are arranged in a plurality of groups and are distributed in a snake-shaped stacked manner, the uppermost conveying belt is arranged at the upper part of the drying box body, and the input end of the uppermost conveying belt is connected with the output end of the pretreatment device; the conveyor belt at the lowest layer is arranged above the combustion chamber, and the output end of the conveyor belt is connected with the input end of the crushing group.

9. The system for treating dead fish and pond sludge of diseased fish according to claim 8, wherein: a partition plate is arranged between the combustion chamber and the lowest layer of the conveyor belt, and one output end of the fine crushing group can convey the particles of the dead fish of the diseased fish to the combustion chamber as fuel; the hot air channel is arranged on the side wall of the drying box body, and a nozzle is arranged on one side, close to the conveyor belt, of the hot air channel.

10. The system for treating dead fish and pond sludge of diseased fish according to claim 8, wherein: a purification assembly for purifying waste gas in the drying box body is arranged on one side of the drying box body, the purification assembly comprises a purification chamber, a filter screen layer, an active carbon adsorption layer and an ozone generator, and the purification chamber is arranged on one side of the drying box body and is communicated with the drying box body through a negative pressure suction pipeline; be provided with the dust chamber that is used for collecting the dust in the clean room, filter screen layer sets up on the output in dust chamber, and one side that the clean room is located the dust chamber is provided with the deodorization chamber, and ozone generator installs in the deodorization chamber, the deodorization chamber is provided with the gas outlet with external intercommunication, and the active carbon adsorption layer sets up in the gas outlet.