Multi-effect counterflow plate heat exchanger heat energy recovery system

Abstract

The utility model provides multi -effect countercurrent plate heat exchanger heat energy recovery system relates to industrial wastewater treatment and heat energy recovery technical field, including the adjusting pool, the side of adjusting pool is provided with the pump of drawing, the side of pump of drawing is connected with the pretreatment assembly through the pipeline, the side of pretreatment assembly is connected with the plate heat exchanger through the pipeline. In the utility model, the sewage in the adjusting pool is pumped out by the pump, which is beneficial to the pretreatment of the sewage, and then the sewage is forced to enter the plate heat exchanger. The sewage exchanges heat with the clean water in the plate heat exchanger, and the heat of the sewage is exchanged to the clean water. After the clean water is heated, it exchanges heat with the air in the cooling tower. The clean water does not produce any odor. The sewage is cooled in a fully enclosed system and does not come into contact with the air, so it will not cause evaporation and odor emission. This helps to avoid odor complaints and reduce the situation of odor concentration exceeding the standard.

Description

Technical Field

[0001] This utility model relates to the field of industrial wastewater treatment and heat recovery technology, and in particular to a multi-effect counter-flow plate heat exchanger heat recovery system. Background Technology

[0002] In industrial production processes, the temperature of process wastewater often reaches as high as 48°C in summer. The subsequent wastewater treatment biochemical system has strict requirements for the influent temperature (it needs to be cooled to below 38°C). If the water temperature exceeds the standard, it will cause the microbial activity in the biochemical system to be lost, which will lead to the paralysis of the biochemical system.

[0003] In existing technologies, existing wastewater cooling towers use direct convective heat exchange between wastewater and air to achieve cooling. The principle is that wastewater enters the packing material through a diffuser, and air is drawn in by a fan to form convection with the wastewater. During this process, the air carries away heat and also carries away some wastewater for evaporation, resulting in the emission of odors, which in turn leads to odor complaints and easily causes the concentration of unorganized odors at the factory boundary to exceed the standard. Utility Model Content

[0004] This utility model mainly provides a multi-effect counter-flow plate heat exchanger heat energy recovery system that uses an environmentally friendly heat exchange method to solve odor once and for all.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a multi-effect counter-current plate heat exchanger heat recovery system, including an equalization tank. A pump is installed on the side of the equalization tank, and a pretreatment component is connected to the side of the pump via a pipe. A plate heat exchanger is connected to the side of the pretreatment component via a pipe, and a cooling tower is connected to the plate heat exchanger via a pipe. A connecting pipe is connected to the side of the cooling tower, and a clear water tank is installed at one end of the connecting pipe. Multiple circulation pumps are installed on the side of the clear water tank. The pump draws sewage from the equalization tank, which is then pretreated by the pretreatment component. The sewage then enters the plate heat exchanger, where it exchanges heat with the clear water. After the clear water becomes hot, it enters the cooling tower to exchange heat with the air. The clear water produces no odor. The sewage is cooled within a completely closed system, without contact with air, thus preventing sewage evaporation and odor emission. This helps avoid odor complaints and reduces the risk of odor exceeding standards.

[0006] Preferably, the pretreatment component includes a filter box with multiple filter screens distributed inside. Slide rails are symmetrically arranged on the top of each filter screen, and a sealing plate is slidably installed inside the slide rails. The multiple filter screens distributed inside the filter box facilitate step-by-step filtration of wastewater, effectively removing impurities and debris, reducing the entry of impurities into subsequent equipment, lowering maintenance and cleaning costs of subsequent equipment, and thus extending the service life of the equipment. The movable sealing plate moves inside the slide rails, facilitating the opening of the filter box for maintenance and cleaning.

[0007] Preferably, a sealing gasket is provided on the top of the filter box, and the bottom of the sealing plate is connected to the sealing gasket. The sealing gasket is located on the top of the filter box, which helps to provide an effective seal when the sealing plate and the filter box are closed, reducing the entry of impurities and dust into the interior of the filter box.

[0008] Preferably, the circulating pump is connected to a connecting pipe on its side, and one end of the connecting pipe is connected to a plate heat exchanger. Multiple circulating pumps are distributed on the side of the clear water tank to draw clear water from the clear water tank and transport it to the plate heat exchanger for indirect heat exchange with sewage.

[0009] Preferably, the other side of the plate heat exchanger is connected to a conveying pipe, one end of which is connected to an acidification tank, through which wastewater flows into the interior of the acidification tank for storage.

[0010] Preferably, the other end of the acidification tank is connected to a drain pipe, and a valve is installed on the drain pipe. By opening the valve, the sewage inside the acidification tank can be discharged through the drain pipe.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, sewage is drawn from the regulating tank by a pump. The sewage is pretreated by a pretreatment component and then enters the plate heat exchanger. The sewage exchanges heat with clean water in the plate heat exchanger, transferring the heat from the sewage to the clean water. After the clean water becomes hot, it enters the cooling tower to exchange heat with the air. The clean water has no odor. The sewage is cooled in a completely closed system and does not come into contact with the air, thus preventing sewage evaporation and odor emission. This helps to avoid odor complaints and reduces the possibility of odor concentration exceeding the standard.

[0012] 2. In this utility model, multiple filter screens are distributed inside the filter box, which facilitates the step-by-step filtration of sewage, effectively removing impurities and debris from the sewage, reducing the entry of impurities into subsequent equipment, lowering the maintenance and cleaning costs of subsequent equipment, and thus extending the service life of the equipment. The movable sealing plate moves inside the slide rail, making it convenient to open the filter box for maintenance and cleaning. Attached Figure Description

[0013] Figure 1 A perspective view of the heat recovery system of the multi-effect counterflow plate heat exchanger is provided for this utility model. Figure 2 This utility model presents a schematic diagram of the heat recovery system of a multi-effect counter-flow plate heat exchanger from another angle. Figure 3 A partially exploded structural diagram of the heat recovery system of the multi-effect counterflow plate heat exchanger proposed in this utility model. Figure 4 This is a partially exploded structural diagram of the heat recovery system of the multi-effect counterflow plate heat exchanger proposed in this utility model.

[0014] Legend: 1. Equalization tank; 2. Extraction pump; 3. Pretreatment assembly; 301. Filter screen; 302. Sealing gasket; 303. Slide rail; 304. Sealing plate; 305. Filter box; 4. Plate heat exchanger; 5. Cooling tower; 6. Connecting pipe; 7. Clear water tank; 8. Circulation pump; 9. Connecting pipe; 10. Delivery pipe; 11. Acidification tank; 12. Drainage pipe. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Please see Figures 1-4This utility model provides a technical solution: a multi-effect counter-current plate heat exchanger heat recovery system, including an equalization tank 1, a pump 2 installed on the side of the equalization tank 1, a pretreatment component 3 connected to the side of the pump 2 via a pipe, a plate heat exchanger 4 connected to the side of the pretreatment component 3 via a pipe, a cooling tower 5 connected to the plate heat exchanger 4 via a pipe, a connecting pipe 6 connected to the side of the cooling tower 5, a clear water tank 7 installed at one end of the connecting pipe 6, and multiple circulating pumps 8 installed on the side of the clear water tank 7, which draw water from the equalization tank via the pump 2. The wastewater inside the system is pretreated by the pretreatment component 3, which facilitates the pretreatment of the wastewater. Then, the wastewater enters the plate heat exchanger 4 and exchanges heat with clean water. The heat of the wastewater is transferred to the clean water, which then enters the cooling tower 5 to exchange heat with the air. The clean water has no odor. The wastewater is cooled in a completely closed system and does not come into contact with the air, thus preventing wastewater evaporation and odor emission. This helps to avoid odor complaints and reduces the possibility of odor concentration exceeding the standard.

[0018] like Figure 3 As shown, the pretreatment component 3 includes a filter box 305, inside which multiple filter screens 301 are distributed. A slide rail 303 is symmetrically arranged on the top of each filter screen 301. A sealing plate 304 is slidably installed inside the slide rail 303. The multiple filter screens 301 distributed inside the filter box 305 facilitate step-by-step filtration of wastewater, effectively removing impurities and debris from the wastewater, reducing the entry of impurities into subsequent equipment, lowering the maintenance and cleaning costs of subsequent equipment, and thus extending the service life of the equipment. The movable sealing plate 304 moves inside the slide rail 303, facilitating the opening of the filter box 305 for maintenance and cleaning.

[0019] like Figure 3 As shown, a sealing gasket 302 is provided on the top of the filter box 305, and the bottom of the sealing plate 304 is connected to the sealing gasket 302. The sealing gasket 302 is provided on the top of the filter box 305, which helps to provide an effective seal when the sealing plate 304 and the filter box 305 are closed, reducing the entry of impurities and dust into the interior of the filter box 305.

[0020] like Figure 2 As shown, a connecting pipe 9 is connected to the side of the circulating pump 8. One end of the connecting pipe 9 is connected to the plate heat exchanger 4. Multiple circulating pumps 8 are distributed on the side of the clear water tank 7 to draw clear water from the clear water tank 7 and transport it to the plate heat exchanger 4 for indirect heat exchange with sewage.

[0021] like Figure 2 As shown, the other side of the plate heat exchanger 4 is connected to a conveying pipe 10, and one end of the conveying pipe 10 is connected to an acidification tank 11. Wastewater flows into the interior of the acidification tank 11 through the conveying pipe 10 for storage.

[0022] like Figure 2 As shown, the other end of the acidification tank 11 is connected to a drain pipe 12, and a valve is installed on the drain pipe 12. By opening the valve, the sewage inside the acidification tank 11 can be discharged through the drain pipe 12.

[0023] The operating method and working principle of this device are as follows: Wastewater is drawn from the regulating tank 1 by pump 2. The wastewater passes through the pretreatment component 3 for pretreatment. Multiple filter screens 301 are distributed inside the filter box 305, facilitating step-by-step filtration of the wastewater and effectively removing impurities and debris, reducing the entry of impurities into subsequent equipment. The movable sealing plate 304 moves within the slide rail 303, facilitating the opening of the filter box 305 for maintenance and cleaning. Then, the wastewater enters the plate heat exchanger 4, where it passes through multiple... A circulating pump 8 is distributed on the side of the clear water tank 7, which draws the clear water inside the clear water tank 7 and transports it to the plate heat exchanger 4 for indirect heat exchange with the sewage. The heat of the sewage is exchanged to the clear water. After the clear water becomes hot, it enters the cooling tower 5 to exchange heat with the air. The clear water has no odor. The sewage is cooled in a completely closed system and does not come into contact with the air, so it will not cause sewage evaporation or odor. The sewage flows into the acidification tank 11 through the conveying pipe 10 for storage. Finally, the valve is opened to facilitate the discharge of the sewage inside the acidification tank 11 through the drain pipe 12.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A multi-effect counter-flow plate heat exchanger heat recovery system, characterized in that, The system includes an equalization tank (1), a pump (2) is provided on the side of the equalization tank (1), a pretreatment component (3) is connected to the side of the pump (2) via a pipe, a plate heat exchanger (4) is connected to the side of the pretreatment component (3) via a pipe, a cooling tower (5) is connected to the plate heat exchanger (4) via a pipe, a connecting pipe (6) is connected to the side of the cooling tower (5), a clear water tank (7) is provided at one end of the connecting pipe (6), and multiple circulating pumps (8) are provided on the side of the clear water tank (7).

2. The multi-effect counter-flow plate heat exchanger heat recovery system according to claim 1, characterized in that: The pretreatment component (3) includes a filter box (305), and a plurality of filter screens (301) are distributed inside the filter box (305). A slide rail (303) is symmetrically arranged on the top of the filter screen (301), and a sealing plate (304) is slidably installed inside the slide rail (303).

3. The multi-effect counter-flow plate heat exchanger heat recovery system according to claim 2, characterized in that: The top of the filter box (305) is provided with a sealing gasket (302), and the bottom of the sealing plate (304) is connected to the sealing gasket (302).

4. The multi-effect counter-flow plate heat exchanger heat recovery system according to claim 1, characterized in that: The circulating pump (8) is connected to a connecting pipe (9) on its side, and one end of the connecting pipe (9) is connected to the plate heat exchanger (4).

5. The multi-effect counter-flow plate heat exchanger heat recovery system according to claim 1, characterized in that: The other side of the plate heat exchanger (4) is connected to a conveying pipe (10), and one end of the conveying pipe (10) is connected to an acidification tank (11).

6. The multi-effect counter-flow plate heat exchanger heat recovery system according to claim 5, characterized in that: The other end of the acidification tank (11) is connected to a drain pipe (12), and a valve is installed on the drain pipe (12).

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