Waste heat recovery device for shrimp industrial aquaculture

Abstract

The utility model discloses a waste heat recovery device for shrimp industrial aquaculture, which comprises a device box body, a filter assembly and a steam circulation heating structure, and a spiral heat exchange pipe is arranged in the device box body; the output end of the filtering assembly is communicated with the upper end of the spiral heat exchange tube; the steam input end of the steam circulation heating structure communicates with the top of the inner cavity of the device box, and the steam output end of the steam circulation heating structure communicates with the side face of the inner cavity of the device box. According to the waste heat recovery device for shrimp industrial aquaculture, the waste heat recovery efficiency is improved, and heat loss is reduced.

Description

Technical Field

[0001] The utility model relates to the field of waste heat recovery of aquaculture tail water, in particular to a waste heat recovery device for factory-scale shrimp aquaculture. Background Art

[0002] Shrimp is an important edible aquatic product. Due to its high nutritional value, it is warmly welcomed by consumers, and the economic benefits of shrimp farming are high. Factory farming of shrimp has the characteristics of controllable farming environment, resource conservation, high yield and high efficiency. In recent years, factory farming of shrimp has developed rapidly, forming a new aquaculture industry. However, the heat energy of the aquaculture tail water is directly discharged without recovery, which not only causes huge heat loss, but also pollutes the environment. Therefore, it is necessary to recover the waste heat through a waste heat recovery device.

[0003] The waste heat recovery device is generally a single heat exchange tube structure. The aquaculture tail water flows through the heat exchange tube for a short time and at a high flow rate, resulting in insufficient heat exchange and affecting the waste heat recovery efficiency. In addition, the aquaculture tail water needs to be filtered before heat exchange, but the filter plate needs to be frequently disassembled and replaced, and the maintenance cost is high, so it is urgently needed to be improved. Utility Model Content

[0004] The utility model aims to provide a waste heat recovery device for shrimp factory farming, which improves the waste heat recovery efficiency and reduces heat loss.

[0005] To achieve the above-mentioned purpose, the utility model provides a waste heat recovery device for factory farming of shrimps, comprising a device box, a filter assembly and a steam circulation heating structure, wherein a spiral heat exchange tube is arranged in the device box; the output end of the filter assembly is connected with the upper end of the spiral heat exchange tube; the steam input end of the steam circulation heating structure is connected with the top of the inner cavity of the device box, and the steam output end of the steam circulation heating structure is connected with the side of the inner cavity of the device box.

[0006] As a further improvement of the utility model, the filter assembly includes a water inlet pipe, a filter box, a water pump and a water pipe connected in sequence along the water flow direction, and the output end of the water pipe is connected to the upper end of the spiral heat exchange tube; a first protective cover is provided on the outside of the water pipe, and a first thermal insulation cotton is provided on the inner wall of the first protective cover.

[0007] As a further improvement of the utility model, the filter box is provided with a filter plate that is slidably connected to it up and down; the front side of the filter plate is provided with a scraper plate that contacts it, and the scraper plate is connected to the filter box; the lower side wall of the filter box is provided with a sewage outlet and a sealing door panel.

[0008] As a further improvement of the present invention, a rib is provided on the inner wall of the spiral heat exchange tube.

[0009] As a further improvement of the present invention, there are at least two spiral heat exchange tubes, and an upper main pipe and a lower main pipe respectively connected to the upper and lower ends of each spiral heat exchange tube are provided inside the device box; the upper main pipe is connected between the output end of the filter assembly and the upper end of the spiral heat exchange tube, and the water outlet end of the lower main pipe extends out of the device box.

[0010] As a further improvement of the present invention, the steam circulation heating structure includes a steam pipe, an induced draft fan, a steam transmission pipe, and a wall pipe which are connected in sequence along the steam direction; the steam input end of the steam pipe is connected to the top of the inner cavity of the device box; the wall pipe is located on the inner cavity side of the device box, and a steam outlet hole is provided on the wall pipe; the steam pipe, the induced draft fan, and the steam transmission pipe are all located outside the device box.

[0011] As a further improvement of the utility model, a second protective cover is provided on the outer side of the steam pipe, and a second thermal insulation cotton is provided on the inner wall of the second protective cover; a third protective cover is provided on the outer side of the steam transmission pipe, and a third thermal insulation cotton is provided on the inner wall of the third protective cover.

[0012] As a further improvement of the present invention, the top of the device box is connected to a water supply pipe, and the bottom of the device box is connected to a drainage pipe.

[0013] Beneficial Effects

[0014] Compared with the prior art, the waste heat recovery device for shrimp factory farming of the utility model has the following advantages:

[0015] 1. Through the provision of spiral heat exchange tubes, baffles, lower main pipes, upper main pipes, induced draft fans, steam pipes, steam pipes, wall pipes, and steam outlets, the filtered aquaculture tail water flows into the upper main pipe through the water pipe, and then is divided into each spiral heat exchange tube. There are three groups of spiral heat exchange tubes, so that the aquaculture tail water is evenly dispersed in the device box and exchanges heat with the cold water inside the device box. Since the spiral heat exchange tube is spiral, the flow path is extended and the heat exchange time is increased. The setting of the baffle slows down the flow rate, making the heat exchange more sufficient and the waste heat recovery rate high. Start the induced draft fan to extract the steam inside the device box through the steam pipe and introduce it into the wall pipe through the steam pipe. The steam is discharged through the steam outlet to heat the water inside the device box. The steam is then discharged through the steam pipe and circulated, so that the thermal energy of the steam can be fully utilized, thereby improving the waste heat recovery efficiency.

[0016] 2. During the waste heat recovery process, the first protective cover and the first thermal insulation cotton insulate the water pipe, the second protective cover and the second thermal insulation cotton insulate the steam pipe, and the third protective cover and the third thermal insulation cotton insulate the steam pipe, thereby reducing heat loss during the circulation of aquaculture tail water and steam.

[0017] 3. By setting up the filter plate, scraper plate, drain port and sealing door plate, pull the filter plate upward so that the scraper plate can scrape the dirt on the surface of the filter plate, and the dirt will be collected on one side of the bottom of the filter box. Open the sealing door plate and clean the dirt through the drain port, so it is easy to clean the filter plate without replacing the filter plate, saving maintenance costs.

[0018] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a front cross-sectional view of a waste heat recovery device for shrimp factory farming;

[0021] Figure 2 for Figure 1 A in the enlarged view;

[0022] Figure 3 It is a partial cross-sectional view of a spiral heat exchange tube;

[0023] Figure 4 A cross-sectional view of the filter box. DETAILED DESCRIPTION

[0024] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0025] Example

[0026] The specific implementation of the utility model is as follows Figures 1 to 4As shown, a waste heat recovery device for factory farming of shrimps includes a device housing 1, spiral heat exchange tubes 3, a filter box 6, a water pump 4 and a wall tube 21. There are three spiral heat exchange tubes 3 and they are all arranged inside the device housing 1. A lower main pipe 2 is installed at the bottom of the device housing 1. The lower main pipe 2 is connected to the bottom end of the spiral heat exchange tube 3, and one end of the lower main pipe 2 extends to the outside of the device housing 1. An upper main pipe 11 is installed at the top of the device housing 1. The upper main pipe 11 is connected to the top end of each spiral heat exchange tube 3, and one end of the upper main pipe 11 extends to the outside of the device housing 1. The wall tube 21 is installed on the inner wall of the device box 1, and the surface of the wall tube 21 is provided with steam outlet holes 22 at equal intervals. A water supply pipe 12 is installed on one side of the top of the device box 1, and an induced draft fan 16 is installed on the other side of the top of the device box 1, and a steam pipe 15 is installed at the input end of the induced draft fan 16, and the steam pipe 15 is connected to the device box 1, and a steam delivery pipe 17 is installed at the output end of the induced draft fan 16, and the steam delivery pipe 17 is connected to the wall tube 21, and a drain pipe 20 is installed on the outer wall of the bottom of the device box 1.

[0027] The filter box 6 is arranged on one side of the device housing 1, and a filter plate 7 is installed inside the filter box 6, and a water inlet pipe 8 is installed on the outer wall of the top of the filter box 6. The water pump 4 is installed between the filter box 6 and the device housing 1, and a water delivery pipe 5 is installed at the output end of the water pump 4, the water delivery pipe 5 is connected to the upper main pipe 11, and the input end of the water pump 4 is connected to the filter box 6.

[0028] A plurality of baffles 301 are fixed on the inner wall of the spiral heat exchange tube 3 to slow down the flow rate of the aquaculture tail water.

[0029] A first protective cover 9 is installed on the side wall of the device box 1 outside the water pipe 5, and a first thermal insulation cotton 10 is adhered to the inner wall of the first protective cover 9, so as to keep the water pipe 5 warm.

[0030] A dirt scraping plate 25 is installed on the inner wall of the top of the filter box 6 , and the dirt scraping plate 25 is tightly fitted to the front side of the filter plate 7 , so as to facilitate cleaning of the filter plate 7 .

[0031] A sewage outlet 23 is provided on the outer wall of the bottom of the filter box 6 , and a sealing door plate 24 is installed inside the sewage outlet 23 to facilitate cleaning out the dirt in the filter box 6 .

[0032] A second protective cover 13 is installed on the top of the device box 1 outside the steam pipe 15, and a second heat-insulating cotton 14 is adhered to the inner wall of the second protective cover 13 to facilitate heat preservation of the steam pipe 15.

[0033] A third protective cover 18 is installed on the side wall of the device box 1 outside the steam pipe 17, and a third thermal insulation cotton 19 is adhered to the inner wall of the third protective cover 18, so as to insulate the steam pipe 17.

[0034] When the device is in use: first, cold water is added to the device housing 1 through the water adding pipe 12. Secondly, the water pump 4 is started so that the water inlet pipe 8 draws the aquaculture tail water into the filter box 6, and the filter plate 7 filters the aquaculture tail water. The filtered aquaculture tail water flows into the upper main pipe 11 through the water delivery pipe 5, and then is diverted into the spiral heat exchange tube 3. The spiral heat exchange tube 3 is provided with three groups, so that the aquaculture tail water is evenly dispersed in the device housing 1 and exchanges heat with the cold water inside the device housing 1. Since the spiral heat exchange tube 3 is spiral, the flow path is extended. Furthermore, the setting of the baffle 301 slows down the flow rate, so that the heat exchange is more sufficient and the waste heat recovery rate is high. At the same time, the induced draft fan 16 is started to extract the steam inside the device housing 1 through the steam pipe 15 and introduce it into the wall tube 21 through the steam delivery pipe 17. The steam is discharged through the steam outlet 22 to heat the water inside the device housing 1. Among them, a perforated water-blocking film is provided in the steam outlet 22, so that steam can be discharged, and water will not enter the wall tube 21, and the steam circulates. This design can make full use of the thermal energy of steam, thereby improving the waste heat recovery efficiency. Then, in the process of waste heat recovery, the first protective cover 9 and the first thermal insulation cotton 10 insulate the water pipe 5, the second protective cover 13 and the second thermal insulation cotton 14 insulate the steam pipe 15, and the third protective cover 18 and the third thermal insulation cotton 19 insulate the steam pipe 17, thereby reducing the heat loss during the circulation of aquaculture tail water and steam. Finally, the aquaculture tail water inside the spiral heat exchange tube 3 is discharged through the lower main pipe 2, and the hot water inside the device box 1 is discharged through the drain pipe 20. By pulling the filter plate 7 upward, the scraper plate 25 scrapes off the dirt on the surface of the filter plate 7, and the dirt is collected on one side of the bottom of the filter box 6. The sealing door plate 24 is opened, and the dirt can be cleared out through the sewage outlet 23, so that it is convenient to clean the filter plate 7, and there is no need to disassemble and replace the filter plate 7, saving maintenance costs.

[0035] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A waste heat recovery device for shrimp factory farming, characterized in that: The invention comprises a device box (1), a filter assembly and a steam circulation heating structure, wherein a spiral heat exchange tube (3) is arranged in the device box (1); the output end of the filter assembly is connected to the upper end of the spiral heat exchange tube (3); the steam input end of the steam circulation heating structure is connected to the top of the inner cavity of the device box (1), and the steam output end of the steam circulation heating structure is connected to the side of the inner cavity of the device box (1).

2. A waste heat recovery device for shrimp factory farming according to claim 1, characterized in that: The filter assembly comprises a water inlet pipe (8), a filter box (6), a water pump (4) and a water delivery pipe (5) which are sequentially connected along the water flow direction; the output end of the water delivery pipe (5) is connected to the upper end of the spiral heat exchange tube (3); a first protective cover (9) is provided on the outer side of the water delivery pipe (5), and a first thermal insulation cotton (10) is provided on the inner wall of the first protective cover (9).

3. The waste heat recovery device for shrimp factory farming according to claim 2 is characterized in that: The filter box (6) is provided with a filter plate (7) slidably connected thereto up and down; a dirt scraping plate (25) in contact with the filter plate (7) is provided on the front side of the filter plate (7), and the dirt scraping plate (25) is connected to the filter box (6); a sewage outlet (23) and a sealing door plate (24) are provided on the lower side wall of the filter box (6).

4. The waste heat recovery device for shrimp factory farming according to claim 1 is characterized in that: A rib (301) is provided on the inner wall of the spiral heat exchange tube (3).

5. The waste heat recovery device for shrimp factory farming according to claim 1 is characterized in that: There are at least two spiral heat exchange tubes (3), and an upper main pipe (11) and a lower main pipe (2) are provided in the device housing (1) and are respectively connected to the upper and lower ends of each spiral heat exchange tube (3); the upper main pipe (11) is connected between the output end of the filter assembly and the upper end of the spiral heat exchange tube (3), and the water outlet end of the lower main pipe (2) extends out of the device housing (1).

6. The waste heat recovery device for shrimp factory farming according to claim 1, characterized in that: The steam circulation heating structure comprises a steam pipe (15), an induced draft fan (16), a steam delivery pipe (17), and a wall pipe (21) which are sequentially connected along the steam direction; the steam input end of the steam pipe (15) is connected to the top of the inner cavity of the device box (1); the wall pipe (21) is located on the inner cavity side of the device box (1), and a steam outlet hole (22) is provided on the wall pipe (21); a perforated water-blocking film is provided in the steam outlet hole (22); the steam pipe (15), the induced draft fan (16), and the steam delivery pipe (17) are all located outside the device box (1).

7. A waste heat recovery device for shrimp factory farming according to claim 6, characterized in that: A second protective cover (13) is provided on the outer side of the steam pipe (15), and a second thermal insulation cotton (14) is provided on the inner wall of the second protective cover (13); a third protective cover (18) is provided on the outer side of the steam transmission pipe (17), and a third thermal insulation cotton (19) is provided on the inner wall of the third protective cover (18).

8. The waste heat recovery device for shrimp factory farming according to claim 1, characterized in that: The top of the device box (1) is connected to a water supply pipe (12), and the bottom of the device box (1) is connected to a drainage pipe (20).

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