Efficient waste heat extraction and recycling equipment for sewage plant in low-temperature region

Abstract

The utility model relates to the technical field of sewage treatment, in particular to efficient waste heat extraction and recycling equipment for a sewage plant in a low-temperature region, which comprises a solar heat collector, a water storage tank and a heat exchange tank, the solar heat collector is connected with the water storage tank; the water storage tank is connected with the heat exchange tank through a water conveying pipe and a water return pipe, and a circulating pump is arranged on the water conveying pipe. The sewage inlet pipe and the sewage outlet pipe are respectively connected with the heat exchange tank; the other end of the sewage outlet pipe is connected with a water inlet of the evaporator; a working medium outlet of the evaporator is connected with the compressor; the compressor is connected with a working medium inlet of the condenser; a working medium outlet of the condenser is connected with the expansion valve; by improving efficient waste heat extracting and recycling equipment of a sewage plant in a low-temperature area, the device has the advantages that waste water is heated through solar energy, continuous output of the waste water with stable water temperature is achieved, and energy is saved, so that the problems and defects in the prior art and equipment are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field more specifically, especially, it is particularly low temperature region sewage plant high -efficient waste heat extraction and recycling equipment. BACKGROUND

[0002] In low temperature region, sewage plant faces many challenges, low temperature environment leads to sewage temperature to be lower, microbial activity drops, sewage treatment efficiency reduces, in order to maintain the processing effect, need to consume more energy to heat sewage, increase operating cost.

[0003] Although now also can recover the equipment of wastewater heat, through the heat of recovery to sewage heating, but when sewage heat is lower, the equipment needs additional electric heating device, realizes the stable supply of heat, and electric heating energy consumption is higher.

[0004] In view of this, the existing problem is researched and improved, and low temperature region sewage plant high -efficient waste heat extraction and recycling equipment is provided, which aims to solve the problem and improve the practical value. UTILITY MODEL CONTENTS

[0005] The utility model is to provide low temperature region sewage plant high -efficient waste heat extraction and recycling equipment to solve the problem and the insufficient of above -mentioned background art.

[0006] To achieve the above object, the utility model provides low temperature region sewage plant high -efficient waste heat extraction and recycling equipment reaches by following specific technical means:

[0007] Low temperature region sewage plant high -efficient waste heat extraction and recycling equipment, including: solar energy collector, water storage tank, heat exchange tank, circulating pump, water pipe, backwater pipe, sewage inlet pipe, sewage outlet pipe, evaporator, compressor, condenser, working medium storage tank, expansion valve, drain pipe, heat exchange tank shell, baffle, water distribution chamber, water collecting chamber, heat exchange chamber, heat exchange pipe, baffle, the solar energy collector is connected with water storage tank, the water storage tank is connected with heat exchange tank through water pipe, backwater pipe, and water pipe is equipped with circulating pump on, the sewage inlet pipe, sewage outlet pipe is connected with heat exchange tank respectively, the other end of sewage outlet pipe is connected with the water inlet of evaporator, the working medium export of evaporator is connected with compressor, the working medium import of compressor is connected with condenser, the working medium export of condenser is connected with expansion valve, the working medium storage tank is connected with expansion valve and evaporator respectively, the water outlet of evaporator is connected with drain pipe, the baffle is welded and fixed at the upper and lower ends in heat exchange tank shell inside, and the baffle divides heat exchange tank shell into water distribution chamber, water collecting chamber, heat exchange chamber, the heat exchange pipe is provided with multiple in heat exchange chamber, and the heat exchange pipe penetrates water distribution chamber, water collecting chamber, the baffle is staggered and set multiple in heat exchange chamber.

[0008] As a further optimization of the technical scheme, the solar heat collector of the low-temperature area sewage plant high-efficiency waste heat extraction and recycling equipment adopts a vacuum tube type heat collector.

[0009] As a further optimization of the technical scheme, the low-temperature area sewage plant high-efficiency waste heat extraction and recycling equipment has a through hole for penetrating the heat exchange pipe on the baffle.

[0010] As a further optimization of the technical scheme, the low-temperature area sewage plant high-efficiency waste heat extraction and recycling equipment has a heat preservation layer outside the water storage tank.

[0011] Due to the use of the above technical scheme, the present application has the following advantages compared with the prior art:

[0012] 1. The solar heat collector is connected with the water storage tank, the water storage tank is connected with the heat exchange tank through the water delivery pipe and the water return pipe, and the water delivery pipe is provided with a circulating pump, so that the water in the water storage tank is heated by the solar heat collector, and when the temperature of the waste water is too low to meet the use requirement, the water in the water storage tank is used to heat the waste water through the heat exchange tank, so that the waste water is continuously and stably output, the energy consumption is reduced, and the energy is saved.

[0013] 2. The heat exchange pipe is provided in multiple places in the heat exchange chamber, and the heat exchange pipe penetrates the water distribution chamber and the water collection chamber, and the baffle is provided in multiple places in the heat exchange chamber, so that the waste water flowing into the heat exchange chamber flows in a Z shape, so that the waste water is in full contact with the heat exchange pipe, and the heat exchange efficiency is improved.

[0014] 3. The low-temperature area sewage plant high-efficiency waste heat extraction and recycling equipment is improved, which has the advantages of heating the waste water by solar energy, realizing the continuous output of the waste water with stable water temperature, and saving energy, so as to effectively solve the problems and deficiencies in the prior art and equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated herein for explanation by reference. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0016] Fig. 1 It is a schematic diagram of the overall structure of the present application;

[0017] Fig. 2 It is a schematic diagram of the cross-sectional structure of the heat exchange tank of the present application;

[0018] Fig. 3 It is a schematic diagram of the internal structure of the heat exchange tank of the present application.

[0019] In the figure: solar energy collector 1, water storage tank 2, heat exchanger tank 3, circulating pump 4, water pipe 5, backwater pipe 6, sewage inlet pipe 7, sewage outlet pipe 8, evaporator 9, compressor 10, condenser 11, working medium storage tank 12, expansion valve 13, drain pipe 14, heat exchanger tank shell 301, partition plate 302, water distribution chamber 303, water collection chamber 304, heat exchange chamber 305, heat exchange pipe 306, baffle 307. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments.

[0021] Please see Figs. 1 to 3 The present application provides a specific technical implementation scheme of high-efficiency waste heat extraction and recycling equipment for sewage plants in low-temperature regions.

[0022] The high-efficiency waste heat extraction and recycling equipment for sewage plants in low-temperature regions comprises: a solar energy collector 1, a water storage tank 2, a heat exchanger tank 3, a circulating pump 4, a water pipe 5, a backwater pipe 6, a sewage inlet pipe 7, a sewage outlet pipe 8, an evaporator 9, a compressor 10, a condenser 11, a working medium storage tank 12, an expansion valve 13, a drain pipe 14, a heat exchanger tank shell 301, a partition plate 302, a water distribution chamber 303, a water collection chamber 304, a heat exchange chamber 305, a heat exchange pipe 306, and a baffle 307. The solar energy collector 1 is connected with the water storage tank 2. The solar energy collector 1 is a vacuum tube type collector. The water storage tank 2 is externally provided with a heat preservation layer. The water storage tank 2 is connected with the heat exchanger tank 3 through the water pipe 5 and the backwater pipe 6, and the circulating pump 4 is arranged on the water pipe 5. The sewage inlet pipe 7 and the sewage outlet pipe 8 are respectively connected with the heat exchanger tank 3. The water in the water storage tank 2 is heated by the solar energy collector 1, and when the temperature of the waste water is too low to meet the use requirement, the water in the water storage tank 2 is used to heat the waste water through the heat exchanger tank 3, so that the waste water is continuously and stably output, the energy consumption is reduced, and the energy is saved. The other end of the sewage outlet pipe 8 is connected with the water inlet of the evaporator 9. The working medium outlet of the evaporator 9 is connected with the compressor 10. The compressor 10 is connected with the working medium inlet of the condenser 11. The working medium outlet of the condenser 11 is connected with the expansion valve 13. The working medium storage tank 12 is connected with the expansion valve 13 and the evaporator 9 respectively. The drain pipe 14 is connected with the water outlet of the evaporator 9.

[0023] The partition plate 302 is welded and fixed at the upper and lower ends inside the heat exchange tank shell 301, and the partition plate 302 divides the heat exchange tank shell 301 into a water distribution chamber 303, a water collecting chamber 304 and a heat exchange chamber 305; the heat exchange pipes 306 are arranged at multiple positions in the heat exchange chamber 305, and the heat exchange pipes 306 penetrate through the water distribution chamber 303 and the water collecting chamber 304; the baffles 307 are arranged at multiple positions staggered in the heat exchange chamber 305; the baffles 307 are provided with through holes for penetrating through the heat exchange pipes 306; the baffles make the wastewater flowing in the heat exchange chamber 305 in a Z shape, so that the wastewater fully contacts with the heat exchange pipes 306, and the heat exchange efficiency is improved.

[0024] Specific implementation steps

[0025] In use, the solar heat collector 1 absorbs the heat of sunlight to heat the water in the water storage tank 2; when the temperature of the wastewater cannot meet the demand of heat, the circulating pump 4 is started to draw the water in the water storage tank 2 into the heat exchange tank 3 through the water conveying pipe 5, the water passes through the heat exchange pipes 306 from the water distribution chamber 303 into the water collecting chamber 304, and returns to the water storage tank 2 through the water returning pipe 6, while the treated wastewater flows into the heat exchange chamber 305 through the wastewater inlet pipe 7, and flows in a Z shape between the baffles 307 to fully contact with the heat exchange pipes 306, the heated wastewater flows into the evaporator 9 through the wastewater outlet pipe 8, exchanges heat with the working medium in the evaporator 9, the working medium enters the condenser 11 through the compressor 10, the condenser 11 heats the wastewater in the biochemical tank to improve the treatment efficiency of the wastewater, the working medium enters the working medium storage tank 12 through the expansion valve 13, and returns to the evaporator 9 from the working medium storage tank 12 to complete the cycle.

[0026] In summary: the low-temperature region wastewater plant high-efficiency waste heat extraction and recycling equipment is connected with the solar heat collector and the water storage tank, the water storage tank is connected with the heat exchange tank through the water conveying pipe and the water returning pipe, and the circulating pump is arranged on the water conveying pipe, the water in the water storage tank is heated by the solar heat collector, when the temperature of the wastewater is low and cannot meet the use demand, the water in the water storage tank is used to heat the wastewater through the heat exchange tank, the wastewater is continuously and stably output, the energy consumption is reduced, and the energy is saved; the heat exchange pipes are arranged at multiple positions in the heat exchange chamber, the heat exchange pipes penetrate through the water distribution chamber and the water collecting chamber, the baffles are arranged at multiple positions staggered in the heat exchange chamber, the baffles make the wastewater flowing in the heat exchange chamber in a Z shape, so that the wastewater fully contacts with the heat exchange pipes, and the heat exchange efficiency is improved; the low-temperature region wastewater plant high-efficiency waste heat extraction and recycling equipment is improved, the wastewater is heated by the solar heat, the water temperature is stable, the wastewater is continuously output, and the energy is saved, so that the problems and defects in the prior art and equipment are effectively solved.

[0027] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. High-efficiency waste heat extraction and reuse equipment for wastewater treatment plants in low-temperature areas, including: The solar collector (1), water storage tank (2), heat exchange tank (3), circulating pump (4), water supply pipe (5), return water pipe (6), sewage inlet pipe (7), sewage outlet pipe (8), evaporator (9), compressor (10), condenser (11), working fluid storage tank (12), expansion valve (13), drain pipe (14), heat exchange tank shell (301), partition (302), water distribution chamber (303), water collection chamber (304), heat exchange chamber (305), heat exchange tube (306), baffle (307) are characterized in that: the solar collector (1) is connected to the water storage tank (2); the water storage tank (2) is connected to the heat exchange tank (3) through the water supply pipe (5) and return water pipe (6), and the water supply pipe (5) is equipped with a circulating pump (4); the sewage inlet pipe (7) and sewage outlet pipe (8) are respectively connected to the heat exchange tank (3); the other end of the sewage outlet pipe (8) is connected to the evaporator (9). The inlet of the evaporator (9) is connected to the compressor (10); the working fluid outlet of the evaporator (9) is connected to the compressor (10); the working fluid inlet of the compressor (10) is connected to the condenser (11); the working fluid outlet of the condenser (11) is connected to the expansion valve (13); the working fluid storage tank (12) is connected to the expansion valve (13) and the evaporator (9) respectively; the drain pipe (14) is connected to the outlet of the evaporator (9); the partition plate (302) is welded and fixed to the evaporator (9). The heat exchange tank shell (301) is divided into a water distribution chamber (303), a water collection chamber (304), and a heat exchange chamber (305) by a partition plate (302) at both the upper and lower ends of the shell. The heat exchange tube (306) is provided in multiple locations within the heat exchange chamber (305), and the heat exchange tube (306) passes through the water distribution chamber (303) and the water collection chamber (304). The baffle (307) is provided in multiple locations within the heat exchange chamber (305).

2. The high-efficiency waste heat extraction and reuse equipment for wastewater treatment plants in low-temperature areas according to claim 1, characterized in that: The solar collector (1) is a vacuum tube collector.

3. The high-efficiency waste heat extraction and reuse equipment for wastewater treatment plants in low-temperature areas according to claim 1, characterized in that: The baffle (307) has a through hole for passing through the heat exchange tube (306).

4. The high-efficiency waste heat extraction and reuse equipment for wastewater treatment plants in low-temperature areas according to claim 1, characterized in that: The water storage tank (2) is provided with an insulation layer on the outside.

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