Circulating water filtration device and purification device for aquatic temporary breeding equipment

Abstract

The embodiment of the present invention discloses a circulating water filtration device and a purification device for aquatic temporary rearing equipment. The technical solution provided by the embodiment of the present invention includes a coarse filtration device, the coarse filtration device includes a filter housing and a filter cartridge, the filter cartridge is sleeved on the filter housing, and a water storage chamber is formed between the filter cartridge and the filter housing; a first circulating water pump, the first circulating water pump is connected to the water outlet of the water storage chamber through a water inlet pipe; a protein separator, the protein separator includes a separator housing and a jet gas injection device, the jet gas injection device is arranged at the bottom of the separator housing and forms a contact chamber with the separator housing, and the water inlet end of the jet gas injection device is connected to the first circulating water pump. The embodiment of the present invention can greatly improve the impurity filtering effect and protein separation effect of the equipment by arranging a coarse filtration device and a protein combined filtration method, and by arranging a flow guide structure, a better bubble effect can be achieved while reducing the height of the overall device.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of aquatic equipment, and in particular to a circulating water filtering device and a purification device for aquatic temporary holding equipment. Background Art

[0002] At present, aquaculture is developing towards high density, intensive and large-scale development. However, due to the corresponding technological lag, high density and intensive farming often cause eutrophication, reduced dissolved oxygen, excessive harmful substances in the pond, and frequent fish diseases. Specifically, if the bait is lost, the bait deposited at the bottom of the pond will deteriorate the local environment of the bottom during the decay and decomposition process, which will affect the water quality and poison the breeding objects. If the water is not replaced in time, it will bring great hidden dangers and threats to the health of the breeding objects; and then cause huge economic losses to the aquaculture party. The existing circulating water treatment method, on the one hand, adopts a diversion method. After coarse filtration and nitrification, one path of water enters the protein separator for treatment, and the other path is cooled by refrigeration. Since the energy consumption of the refrigerator is fixed, 50% of the energy loss will be generated during water treatment. In addition, the water purification effect of the existing circulating water treatment method is not high, which increases the processing burden of the machine. Therefore, designing a solution that can improve the water purification effect has become a technical problem that needs to be solved by technicians in this field. Summary of the invention

[0003] The embodiment of the present invention provides a circulating water filtration device for aquatic temporary holding equipment. By arranging a coarse filtration device and a protein combined filtration method, the impurity filtration effect and organic protein separation effect of the equipment can be greatly improved. By arranging a guide structure, a better air-water mixing, arching and bubble separation effect can be achieved while reducing the height of the overall device.

[0004] In a first aspect, an embodiment of the present invention provides a circulating water filtration device for aquatic temporary holding equipment, comprising:

[0005] A coarse filtration device, the coarse filtration device comprising a filter housing and a filter cartridge, the filter cartridge being sleeved on the filter housing, and a water storage cavity is formed between the filter cartridge and the filter housing to accommodate the filtered circulating water;

[0006] a first circulating water pump, the first circulating water pump being connected to the water outlet of the water storage chamber through a water inlet pipe, the first circulating water pump being connected to the water inlet of the protein skimmer through a water outlet pipe, and the first circulating water pump being used to pump the filtered circulating water to the protein skimmer;

[0007] A protein separator, the protein separator comprises a separator shell and a jet gas injection device, the jet gas injection device is arranged at the bottom of the separator shell to form a contact chamber with the separator shell, and the water inlet end of the jet gas injection device is connected with a first circulating water pump, a dirt collecting chamber is arranged on the separator shell, the dirt collecting chamber is connected with the contact chamber to discharge the dirt generated in the contact chamber, and a water outlet chamber is arranged on the side wall of the separator shell, and the water outlet chamber is connected with the contact chamber.

[0008] As an optional embodiment, in the first aspect of the embodiment of the present invention, the coarse filtration device also includes a UV sterilization device, the water storage chamber includes a first water storage chamber and a second water storage chamber, the first water storage chamber and the second water storage chamber are connected, the first water storage chamber is located between the filter cartridge and the filter shell, and the second water storage chamber is arranged on one side of the filter shell, and the UV sterilization device is used to sterilize the circulating water in the second water storage chamber.

[0009] As an optional implementation, in the first aspect of the embodiment of the present invention, a sewage discharge channel and a sewage discharge valve are provided at the bottom of the first water storage chamber, and the sewage discharge valve is used to control the sewage in the first water storage chamber to be discharged through the sewage discharge channel.

[0010] As an optional implementation, in the first aspect of the embodiment of the present invention, the coarse filtration device further includes a filter screen, and the filter screen is detachably arranged at the filter cartridge, and the filter cartridge is a conical filter cartridge.

[0011] As an optional embodiment, in the first aspect of the embodiment of the present invention, the conical filter cartridge is a stainless steel conical filter cartridge, and the coarse filtration device is provided with a water inlet, which is arranged at the top of the coarse filtration device according to a preset direction to generate spiral water inlet at the filter cartridge.

[0012] As an optional implementation, in the first aspect of the embodiment of the present invention, an air inlet is provided at the water outlet channel of the first circulating water pump to increase the oxygen content in the circulating water.

[0013] As an optional embodiment, in the first aspect of the embodiment of the present invention, the jet gas injection device includes a guide structure, the guide structure includes a guide outer cylinder and a buffer structure, the buffer structure is nested on the guide outer cylinder, a plurality of first water outlet holes are arranged on the buffer structure, and a plurality of second water outlet holes are arranged on the side wall of the guide outer cylinder.

[0014] As an optional implementation, in the first aspect of the embodiment of the present invention, the buffer structure includes a fixing rod and at least two buffer plates, the fixing rod is used to connect the two buffer plates, and the buffer plates are provided with a plurality of evenly distributed first water outlet holes.

[0015] As an optional embodiment, in the first aspect of the embodiment of the present invention, the water outlet chamber is provided with a first water outlet, and the first water outlet includes a rectangular water outlet; the bottom of the side wall of the sewage collecting chamber is provided with a second water outlet, and the first water outlet is provided at the upper part of the side wall of the water outlet chamber.

[0016] In a second aspect, an embodiment of the present invention provides a circulating water purification device for aquatic temporary holding equipment, comprising a nitrification tank, a refrigerator, a second circulating water pump and a circulating water filter device for aquatic temporary holding equipment as described in any one of the first aspects of the present invention; the circulating water filter device is used to transport the treated circulating water to the nitrification tank for nitrification treatment, the second circulating water pump is used to pump the water after nitrification treatment to the refrigerator for refrigeration treatment, and transport the refrigerated circulating water to the fish tank.

[0017] The embodiment of the present invention can greatly improve the impurity filtering effect and protein separation effect of the equipment by providing a coarse filtration device and a protein combined filtration method, and can achieve a better bubble effect while reducing the height of the overall device by providing a guide structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a circulating water filtration device of aquatic temporary holding equipment provided by an embodiment of the present invention;

[0019] Figure 2 This is another structural schematic diagram of a circulating water filtration device for aquatic temporary holding equipment provided by an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the exploded structure of a circulating water filtration device for aquatic temporary holding equipment provided by an embodiment of the present invention;

[0021] Figure 4 is a schematic structural diagram of a coarse filtration device provided by an embodiment of the present invention;

[0022] Figure 5 is a schematic structural diagram of a coarse filtering device lacking a filter housing provided by an embodiment of the present invention;

[0023] Figure 6 It is a schematic diagram of the decomposition structure of the protein skimmer provided by an embodiment of the present invention;

[0024] Figure 7 is a schematic structural diagram of a flow guide structure provided by an embodiment of the present invention;

[0025] Figure 8 is a schematic structural diagram of a buffer structure provided by an embodiment of the present invention;

[0026] Fig. 9A structural block diagram of a circulating water purification device for aquatic temporary holding equipment provided in an embodiment of the present invention.

[0027] Figure numerals: 1. coarse filtration device; 11. filter cartridge; 12. second water storage chamber; 13. filter cover; 2. first circulating water pump; 21. water inlet pipe; 22. water outlet pipe; 221. air inlet; 3. protein separator; 31. water inlet end; 32. flow guide structure; 321. flow guide outer cylinder; 322. buffer structure; 3221. buffer plate; 3222. fixing rod; 33. sewage collecting chamber; 34. water outlet chamber; 341. first water outlet; 4. mounting part. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and the limitations of the present application cannot be understood.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. Embodiment 1

[0032] Figure 1 is a structural schematic diagram of a circulating water filtration device for aquatic temporary holding equipment provided by an embodiment of the present invention, Figure 2 is another structural schematic diagram of a circulating water filtration device for aquatic temporary holding equipment provided by an embodiment of the present invention, Figure 3 Schematic diagram of the exploded structure of a circulating water filtration device for aquatic temporary holding equipment provided by an embodiment of the present invention. Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a circulating water filtration device for aquatic temporary holding equipment, comprising:

[0033] Figure 4 is a schematic structural diagram of a coarse filtration device 1 provided in an embodiment of the present invention, Figure 5 is a schematic structural diagram of a coarse filtration device 1 provided in an embodiment of the present invention without a filter housing, such as Figure 4 and Figure 5 As shown, an embodiment of the present invention provides a coarse filtration device 1, the coarse filtration device 1 includes a filter housing and a filter cartridge 11, the filter cartridge 11 is sleeved on the filter housing, and a water storage chamber is formed between the filter cartridge 11 and the filter housing to accommodate filtered circulating water. More preferably, the coarse filtration device 1 also includes a UV sterilization device, the water storage chamber includes a first water storage chamber and a second water storage chamber 12, the first water storage chamber and the second water storage chamber 12 are connected, the first water storage chamber is located between the filter cartridge 11 and the filter housing, the second water storage chamber 12 is arranged on one side of the filter housing, and the UV sterilization device is used to sterilize the circulating water in the second water storage chamber 12.

[0034] During the feeding process of ornamental fish, a large amount of bait, feces and fish scales will be produced in the fish tank. If the above waste is not removed in time, it will have a great impact on the subsequent breeding. In addition, the size of these bait and feces particles will also be different, so they need to be coarsely filtered first; after coarse filtration, 90% of impurities can be filtered out, which will make the subsequent protein separation treatment more efficient and effective.

[0035] More preferably, a sewage channel and a sewage valve are provided at the bottom of the first water storage chamber, and the sewage valve is used to control the sewage in the first water storage chamber to be discharged through the sewage channel. After the filtration is completed, the first water storage chamber is mainly used for simple water precipitation, and the filtered circulating water can be further precipitated, which will form stain precipitation at the bottom of the water storage chamber. At this time, the sewage valve can be opened and the sewage in the first water storage chamber can be discharged through the sewage channel. In the specific implementation, the first water storage chamber and the second water storage chamber 12 are connected, so that the filtered clean water in the first water storage chamber can be transported to the second water storage chamber 12, and since a UV sterilization device is provided at the second water storage chamber 12, the water in the second water storage chamber 12 can be further sterilized to improve the water treatment effect.

[0036] More preferably, the coarse filtration device 1 further comprises a filter screen, which is detachably arranged at the filter cartridge 11, and the filter cartridge 11 is a conical filter cartridge 11. More preferably, the conical filter cartridge 11 is a stainless steel conical filter cartridge 11, and the coarse filtration device 1 is provided with a water inlet, which is arranged at the top of the coarse filtration device 1 in a preset direction to generate spiral water inlet at the filter cartridge 11. During implementation, since the filter screen is detachable, it can be disassembled and cleaned more conveniently, and the cylindrical filter structure is replaced with a conical structure to further improve the filtering effect.

[0037] More preferably, the conical filter cartridge 11 is a stainless steel conical filter cartridge 11, and the coarse filter device 1 is provided with a water inlet, which is arranged at the top of the coarse filter device 1 in a preset direction to generate water inflow in a spiral direction at the filter cartridge 11. When making specific settings, a conduit may be directly drained from the fish tank, and then its outlet end may be arranged toward the filter cartridge 11 in a preset direction, or a filter cover 13 may be arranged, and a water inlet is arranged on the filter cover 13, and the water inlet is fixedly connected to a conduit drained from the fish tank, so that the outlet direction of the water flow can be ensured. When the filter cartridge 11 is arranged vertically downward, the direction of the water inlet is horizontal at this time, and the water flow will flow downward under the influence of gravity, and the coarse filtration of the circulating water is completed due to the existence of the filter cartridge 11.

[0038] The coarse filtration device 1 of the embodiment of the present invention is mainly used for coarse filtration. Due to the filter barrel with a spiral water inlet channel, the separation effect is good and large particles of impurities can be better filtered. In addition, the mesh bag (filter net) of the embodiment of the present invention can be disassembled, which is convenient for timely discharge of the collected large particles of impurities, and the UV sterilization structure plays a sterilization role. A water storage cavity is formed at the bottom of the filter barrel to play a buffering role. In addition, the coarse filtration device 1 can also process organic protein and fishy odor, and can also complete the corresponding bleaching function.

[0039] The first circulating water pump 2 is connected to the water outlet of the water storage chamber through the water inlet pipe 21, and the first circulating water pump 2 is connected to the water inlet end 31 of the protein separator 3 through the water outlet pipe 22. The first circulating water pump 2 is used to pump the filtered circulating water to the protein separator 3.

[0040] The first circulating water pump 2 of the embodiment of the present invention is mainly used to pump the coarsely filtered water into the protein separator 3 and provide the initial kinetic energy of the coarsely filtered circulating water in the protein separator 3, so as to facilitate a more effective and sufficient reaction.

[0041] More preferably, the water outlet channel of the first circulating water pump 2 is provided with an air inlet 221 to increase the oxygen content in the circulating water. The air inlet pipe is provided at the water outlet of the first circulating water pump 2, which can increase the oxygen content in the water, improve the gas-water mixing effect, and avoid the damage to the water pump caused by the air inlet pipe being provided at the front end of the circulating water pump. Because if it is provided in the water inlet pipe 21, there will be empty pumping, so long-term operation will cause loss to the water pump; if it is provided in the water outlet pipe 22, it can ensure the oxygen intake on the one hand, and on the other hand, it can also ensure the stable and efficient operation of the water pump.

[0042] Figure 6 Schematic diagram of the decomposition structure of the protein skimmer provided by the embodiment of the present invention, such as Figure 6 As shown, an embodiment of the present invention provides a protein separator 3, which includes a separator shell and a jet gas injection device, wherein the jet gas injection device is arranged at the bottom of the separator shell to form a contact chamber with the separator shell, and the water inlet end 31 at the jet gas injection device is connected to the first circulating water pump 2, a sewage collecting chamber 33 is arranged on the separator shell, and the sewage collecting chamber 33 is connected to the contact chamber to discharge the dirt generated in the contact chamber, and a water outlet chamber 34 is arranged on the side wall of the separator shell, and the water outlet chamber 34 is connected to the contact chamber. During the design, the sewage collecting chamber 33 and the water outlet chamber 34 are integrally formed with the separator shell. The sewage collecting chamber 33 is located at the top of the protein separator and is used to discharge the dirt after the reaction. The water outlet chamber 34 is arranged on one side of the separator shell, so that the circulating water flowing into the water outlet chamber is relatively clean water after effective filtration and precipitation; and during the specific design, the first water outlet 341 is arranged above the water outlet chamber 34. Since the density of general dirt is higher than that of water, it will sink below. The method of arranging the first water outlet 341 at the top greatly increases the difficulty of dirt entering the next level of treatment, and further improves the cleanliness of the water flowing to the next level of treatment; thereby ensuring the cleanliness of the water entering the fish tank later and improving the survival rate of the fish in the fish tank.

[0043] Specifically, the working principle of the protein separator 3 is to use the gas-water mixing method to generate bubbles with a certain surface tension. A large number of bubbles adsorb and collect organic impurities such as cellulose, protein and food residues. The processing flow of the protein separator 3: the water body to be treated enters the upper part of the contact chamber, the water body moves downward and flows along the outlet; a large number of fine bubbles generated by the jet gas injection device form a huge surface area and enter the contact chamber. These bubbles move upward in the contact chamber. During the movement, the undissolved and dissolved protein particles suspended in the water body gather on the surface of the microbubbles, and accumulate and push upward to separate from the water body, and finally enter the top collection chamber 33; in the collection chamber 33, as the bubbles are slowly broken, organic dirt forms precipitation here, and then discharged from the sewage outlet, and the treated water flows out along the main water outlet. The above structure can remove most of the protein and cellulose, etc., effectively improving the cleanliness of the circulating water.

[0044] More preferably, Figure 7 is a schematic structural diagram of a flow guide structure provided by an embodiment of the present invention, Figure 8 is a schematic diagram of the structure of the buffer structure provided by an embodiment of the present invention, such as Figure 7 and Figure 8 As shown, an embodiment of the present invention provides a jet gas injection device. The jet gas injection device includes a guide structure 32, and the guide structure 32 includes a guide outer cylinder 321 and a buffer structure 322. The buffer structure 322 is nested on the guide outer cylinder 321. The buffer structure 322 is provided with a plurality of first water outlet holes, and the side wall of the guide outer cylinder 321 is provided with a plurality of second water outlet holes. When performing specific design, there can be a variety of design methods. The first one is that the guide outer cylinder 321 and the buffer plate 3221 are both provided with water outlet holes as mentioned above, so that the water outlet area can be increased and the reaction rate can be improved. The second one is to provide water outlet holes on the side wall of the guide outer cylinder 321, and no water outlet holes are provided on the buffer plate 3221. In this way, the circulating water ejected is all directed toward the protein separator shell, which can have a certain reaction effect, and it can achieve the purpose of reducing the ejection height. Thirdly, it is not necessary to set the water outlet hole on the side wall of the guide outer cylinder 321, but only set the water outlet hole on the buffer plate 3221, so that the circulating water can be ejected upward when it is discharged, which can also have a better effect. Moreover, due to the upward injection, a large amount of foam will be generated above the sewage collecting chamber 33, and then impurities such as protein will be brought to the sewage collecting chamber 33 for discharge.

[0045] More preferably, the buffer structure 322 includes a fixing rod 3222 and at least two buffer plates 3221, the fixing rod 3222 is used to connect the two buffer plates 3221, and the buffer plates 3221 are provided with a plurality of evenly distributed first water outlet holes. There is another embodiment, that is, the buffer structure 322 is not provided with a fixing rod 3222, and the two buffer plates 3221 are directly connected to the guide outer cylinder 321.

[0046] In the embodiment of the present invention, the contact chamber has a specially designed flow guiding structure 32, including a flow guiding outer cylinder 321 and a buffer structure 322 arranged inside the flow guiding outer cylinder 321, wherein the buffer structure 322 is provided with a plurality of evenly distributed water outlet holes on the top, and a plurality of evenly distributed water outlet holes are provided on the side wall of the flow guiding outer cylinder 321; such a design can reduce the injection pressure of the water flow and improve the foaming effect, thereby achieving the purpose of reducing the overall height of the protein separator 3.

[0047] The design method of adopting the above-mentioned flow-guiding structure 32 and buffer structure 322 can effectively reduce the jet height on the one hand, so that the height of the protein separator 3 can be greatly compressed, because if there is no above-mentioned flow-guiding structure 32 and buffer structure 322, the ejected circulating water may directly reach the sewage chamber, instead of fully reacting in the contact chamber, so that the protein in the circulating water cannot be effectively removed; when performing conventional design, although the user can reduce the height of the ejected circulating water by reducing the power of the water pump, this method cannot achieve effective reaction. Therefore, the above-mentioned flow-guiding structure 32 and buffer structure 322 can be integrated and arranged at the commercial aquatic equipment, so that a better protein separation effect can be achieved in an effective space. On the other hand, the above-mentioned flow-guiding structure 32 and buffer structure 322 are also provided with a plurality of water outlet holes, so that it can become an effective contact chamber and a primary reaction space for protein separation, and because there are a plurality of water outlet holes, it can generate a plurality of water columns after the final water discharge, so that the reaction is more complete. When making specific settings, a multi-level setting method can be adopted. The specific design method is to use multiple buffer plates 3221 to be fixed on the same fixed rod 3222, so that a multi-level reaction space can be formed, so that the jet water flow can perform protein skimming reactions in different reaction spaces; and the design of multi-level buffer plates can further reduce the jet height of the circulating water flow.

[0048] More preferably, the water outlet chamber 34 is provided with a first water outlet 341, and the first water outlet 341 includes a rectangular water outlet; the side wall of the sewage collecting chamber 33 is provided with a second water outlet, and the first water outlet 341 is provided at the top of the water outlet chamber 34. The existing first water outlet 341 is generally set in a hole shape, so that when water is discharged, its water outlet point is a point, which will make it only the point when it is processed at the nitrification box. In the embodiment of the present invention, it is set as a rectangular water outlet, so that when the water is discharged to the nitrification box, it is a surface rather than a point. The water inlet of the water outlet chamber 34 is located at the bottom, and its water outlet adopts a large-area water outlet structure, which can expand the coverage area of ​​the water outlet.

[0049] During the overall installation, the coarse filtration device 1, the first circulating water pump 2 and the protein separator 3 can be integrated on the mounting member 4, so that they can be designed as a single centralized device, which is convenient for users to replace.

[0050] The embodiment of the present invention can greatly improve the impurity filtering effect and protein separation effect of the equipment by providing a coarse filtration device 1 and a protein combined filtration method, and can achieve a better bubble effect while reducing the height of the entire device by providing a guide structure 32. Embodiment 2

[0051] Fig. 9 The structural block diagram of the circulating water purification device of the aquatic temporary holding equipment provided by the embodiment of the present invention is as follows: Fig. 9 As shown, an embodiment of the present invention provides a circulating water purification device for aquatic temporary rearing equipment, comprising a nitrification tank, a refrigerator, a second circulating water pump and a circulating water filter device for aquatic temporary rearing equipment as described in any one of the first embodiments; the circulating water filter device is used to transport the treated circulating water to the nitrification tank for nitrification treatment, the second circulating water pump is used to pump the water after nitrification treatment to the refrigerator for refrigeration treatment, and transport the refrigerated circulating water to the fish tank.

[0052] Due to the design of the filter device in the first embodiment, the overall occupied area can be relatively small, so that a better circulating water purification effect can be achieved in the effective space. In addition, the water purification device in the embodiment of the present invention can achieve the same water intake, which can also greatly reduce the refrigeration energy consumption; improve the overall refrigeration efficiency, and can better achieve water purification.

[0053] The principle of the scheme design of the embodiment of the present invention is mainly the process from oxygen consumption to anaerobic; because in the process of fish breeding; due to the existence of bait, fish feces and fish, the dissolved oxygen in the water will be continuously consumed; after a period of time, if the impurities in the water are not removed, the dissolved oxygen in the water will decrease and the living environment of the fish will become worse due to the accumulation of feces and bait in the water; the worsening is reflected in the decrease of dissolved oxygen concentration in the water and the accumulation of the above impurities, which makes the environment less beautiful. The scheme of the embodiment of the present invention improves the purification degree of circulating water; the feces, bait and other harmful substances in the circulating water are filtered out by the coarse filtration device, on the one hand, the substances that consume dissolved oxygen in the water are eliminated, and on the other hand, a purer circulating water quality is provided for subsequent nitrification filtration; after coarse filtration, most of the harmful impurities have been filtered out, and then the protein separator jet module is used to further process the circulating water after coarse filtration. Because the jet module is provided; by continuously compressing and pressurizing the air in the protein separator, on the one hand, more organic protein impurities are filtered out, and on the other hand, the density of oxygen dissolved in water is greatly increased; the scheme of the embodiment of the present application is significantly improved compared with the existing scheme. Through the above process, the process of circulating water from oxygen consumption to anaerobic is well completed, and the dissolved oxygen in the circulating water is increased. Instead of directly filling oxygen into the water like the existing scheme, it can save water energy and oxygen resources on the one hand, and reduce costs on the other hand, because the water can be continuously circulated, and the dissolved oxygen in the water is increased by the injection of gas, so that there is no need for additional devices to inject too much oxygen. After filtering through the above two modules, most harmful substances can be filtered out, so that the health of the circulating water entering the nitrifying bacteria group is significantly improved, so that the damage of harmful substances to the nitrifying bacteria group is reduced, and the purification and filtration effect can be improved on the one hand, and the life of the purification device can be greatly improved. The above is only a preferred embodiment of the present invention and the technical principles used. The present invention is not limited to the specific embodiments described here, and various obvious changes, readjustments and substitutions that can be made by those skilled in the art will not deviate from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the claims.

Claims

1. A circulating water filtration device for aquatic temporary rearing equipment, characterized in that: include: A coarse filtration device, the coarse filtration device comprising a filter housing and a filter cartridge, the filter cartridge being sleeved in the filter housing, and a water storage cavity being formed between the filter cartridge and the filter housing to accommodate filtered circulating water; a first circulating water pump, the first circulating water pump being connected to the water outlet of the water storage chamber through a water inlet pipe, the first circulating water pump being connected to the water inlet of the protein skimmer through a water outlet pipe, and the first circulating water pump being used to pump the filtered circulating water to the protein skimmer; A protein separator, the protein separator comprises a separator shell and a jet gas injection device, the jet gas injection device is arranged at the bottom of the separator shell and forms a contact chamber with the separator shell, the water inlet end of the jet gas injection device is connected with a first circulating water pump; a dirt collecting chamber is arranged on the separator shell, the dirt collecting chamber is connected with the contact chamber to discharge the dirt generated in the contact chamber, a water outlet chamber is arranged on the side wall of the separator shell, the water outlet chamber is connected with the contact chamber, a first water outlet is arranged above the water outlet chamber, and the first water outlet comprises a rectangular water outlet; the jet gas injection device comprises a guide structure, the guide structure comprises a guide outer cylinder and a buffer structure, the buffer structure is nested in the guide outer cylinder, a plurality of second water outlet holes are arranged on the side wall of the guide outer cylinder, the buffer structure comprises a fixing rod and at least two buffer plates, the fixing rod is used to connect the two buffer plates, and no water outlet holes are arranged on the buffer plates.

2. The circulating water filtration device for temporary aquaculture equipment according to claim 1, characterized in that: A sewage discharge channel and a sewage discharge valve are arranged at the bottom of the water storage chamber, and the sewage discharge valve is used to control the sewage in the water storage chamber to be discharged through the sewage discharge channel.

3. The circulating water filtration device for temporary aquaculture equipment according to claim 1, characterized in that: The coarse filtering device also includes a filter screen, which is detachably arranged on the filter cartridge. The filter screen is used to discharge the collected large particle impurities in time, and the filter cartridge is a conical filter cartridge.

4. The circulating water filtration device for temporary aquaculture equipment according to claim 3, characterized in that: The conical filter cartridge is a stainless steel conical filter cartridge. The coarse filtration device is also provided with a water inlet. The coarse filtration device is used for coarse filtration. The water inlet is arranged at the top of the coarse filtration device in a preset direction to generate water inflow in a spiral direction at the filter cartridge.

5. The circulating water filtration device for temporary aquaculture equipment according to claim 1, characterized in that: An air inlet is provided at the water outlet channel of the first circulating water pump to increase the oxygen content in the circulating water.

6. The circulating water filtration device for temporary aquaculture equipment according to claim 1, characterized in that: The side wall of the sewage collecting chamber is provided with a second water outlet, and the first water outlet is provided at the upper part of the side wall of the water outlet chamber.

7. A circulating water purification device for aquatic temporary rearing equipment, characterized in that: The invention comprises a nitrification tank, a refrigerator, a second circulating water pump and a circulating water filter device of the temporary aquatic culture equipment as claimed in any one of claims 1 to 6; the circulating water filter device is used to transport the treated circulating water to the nitrification tank for nitrification treatment, the second circulating water pump is used to pump the water after nitrification treatment to the refrigerator for refrigeration treatment, and transport the refrigerated circulating water to the fish tank.

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