Sewage source heat pump sludge drying equipment

Abstract

The utility model belongs to the technical field of sewage treatment, and discloses sewage source heat pump sludge drying equipment. According to the sewage source heat pump sludge drying equipment, a low-temperature heat source is extracted from sewage through the heat pump unit and converted into high-temperature hot air through the water-air heat exchanger, the high-temperature hot air is directly used for the heating process of the sludge drying box, and the utilization efficiency of heat energy is greatly improved; the design of the water air conditioning unit realizes the linkage operation of the heat pump unit and a plant air conditioning pipeline, so that the heat source requirement of sludge drying can be met, waste heat can be conveyed to a plant air conditioning system, and the gradient utilization of heat energy is realized; hot air enters the sludge drying box from the top, multiple layers of sludge conveying belts are arranged in the sludge drying box, sludge can be conveyed in a layered mode, the drying area is increased, the sludge can make full contact with the sludge, the drying efficiency is improved, and the drying time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially sewage source heat pump sludge drying equipment. BACKGROUND

[0002] City domestic sewage and the sewage produced in the factory production process as the indispensable adjunct of human life, in addition to needing to carry out effective treatment to avoid environmental pollution, still contains huge energy, can become a kind of high-quality low-temperature heat source. The existing sewage treatment equipment structure is complex, lacks effective heat recovery mechanism, and the extracted heat can often only satisfy single purpose, cannot carry out cascade utilization between different systems, leads to energy waste.

[0003] Therefore, a sewage source heat pump sludge drying equipment is needed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a sewage source heat pump sludge drying equipment, and the heat energy utilization efficiency is greatly improved while drying sludge, factory heating and refrigeration are taken into account.

[0005] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0006] Sewage source heat pump sludge drying equipment, comprising:

[0007] Sludge drying box, the top of sludge drying box is equipped with hot air inlet, the inside of sludge drying box is equipped with multilayer sludge conveyor belt, and multilayer sludge conveyor belt is used to carry and transport sludge;

[0008] Water air conditioning unit, comprising first inlet and first outlet, the first outlet is communicated with factory air conditioning pipeline;

[0009] Water-air heat exchanger, the water-air heat exchanger includes hot water inlet, warm water outlet and hot air outlet, the hot air outlet is communicated with the hot air inlet through hot air supply pipe;

[0010] Heat pump unit, comprising sewage inlet, operating water inlet, cold water outlet and hot water outlet, the sewage inlet is communicated with sewage source through sewage inlet pipe, the cold water outlet is communicated with the first inlet, the hot water outlet is communicated with the first inlet and / or the hot water inlet, and the warm water outlet is communicated with the operating water inlet through warm water return pipe.

[0011] Optionally, the sewage source heat pump sludge drying equipment further includes heat circulating fan, the heat circulating fan includes circulating air inlet and circulating air outlet, the sludge drying box further includes hot air outlet, the hot air outlet is communicated with the circulating air inlet through first circulating pipe, and the circulating air outlet is communicated with the hot air inlet through second circulating pipe.

[0012] Optionally, the sludge drying box comprises a wet air outlet, and the sewage source heat pump sludge drying device further comprises:

[0013] a dehumidification fan comprising a dehumidification inlet and a dehumidification outlet, the dehumidification inlet being in communication with the wet air outlet through a drying dehumidification pipe;

[0014] a waste heat recovery device comprising a waste heat recovery inlet and a waste heat recovery outlet, the waste heat recovery inlet being in communication with the dehumidification outlet through a first waste heat recovery pipe, and the waste heat recovery outlet being in communication with the circulating air inlet through a second waste heat recovery pipe.

[0015] Optionally, the waste heat recovery device further comprises a tail gas outlet, and the tail gas outlet is in communication with a tail gas treatment device through a tail gas treatment pipeline.

[0016] Optionally, the sludge drying box further comprises a dry sludge outlet, and the sewage source heat pump sludge drying device further comprises a dry sludge bin, a dry sludge inlet of the dry sludge bin being in communication with the dry sludge outlet, and the dry sludge bin being used for crushing treatment of dry sludge.

[0017] Optionally, the sewage source heat pump sludge drying device further comprises a sewage return pipe.

[0018] the hot water outlet is connected with the first inlet and / or the sewage return pipe through a factory area heating pipeline;

[0019] the cold water outlet is connected with the first inlet and / or the sewage return pipe through a sewage discharge pipe.

[0020] Optionally, the sewage source heat pump sludge drying device further comprises a tap water supplementing pipe, and the tap water supplementing pipe is in communication with the operating water inlet.

[0021] Optionally, a driving assembly is arranged in the sludge drying box, and the driving assembly is in transmission connection with the plurality of layers of sludge conveying belts.

[0022] Optionally, the sludge conveying belt is a mesh belt.

[0023] Optionally, a temperature sensor is arranged at the hot air inlet, and the temperature sensor is used for detecting the temperature of the hot air.

[0024] Beneficial effects:

[0025] The sewage source heat pump sludge drying equipment provided by the utility model, through the heat pump unit, low-temperature heat source is extracted from sewage, and is converted into high-temperature hot air through the water-air heat exchanger, is directly used for the heating process of the sludge drying box, and the utilization efficiency of heat energy is greatly improved; the design of the water-air conditioning unit realizes the linkage operation of the heat pump unit and the plant air conditioning pipeline, not only can meet the heat source demand of sludge drying, but also can deliver waste heat to the plant air conditioning system, realizes the cascade utilization of heat energy; and hot air enters the sludge drying box from the top, the sludge drying box is equipped with multiple sludge conveying belts, can convey sludge in layers, increases the drying area, fully contacts with sludge, improves the drying efficiency, and shortens the drying time. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the connection schematic view of the sewage source heat pump sludge drying equipment provided by the utility model;

[0027] Figure 2 It is the connection schematic view between the heat pump unit, the water-air heat exchanger and the water-air conditioning unit provided by the utility model;

[0028] Figure 3 It is the connection schematic view between the sludge drying box, the heat circulation fan, the dehumidification fan, the waste heat recovery device, the dry sludge bin and the tail gas treatment device provided by the utility model.

[0029] In the drawing:

[0030] 100, sludge drying box; 110, hot air inlet; 120, sludge conveying belt; 130, hot air outlet; 140, wet air outlet;

[0031] 200, water-air conditioning unit; 210, first inlet; 220, first outlet; 230, plant air conditioning pipeline;

[0032] 300, water-air heat exchanger; 310, hot water inlet; 320, warm water outlet; 330, hot air outlet; 340, hot air supply pipe;

[0033] 400, heat pump unit; 410, sewage inlet; 420, operation water inlet; 430, cold water outlet; 440, hot water outlet; 450, sewage water inlet pipe; 460, warm water return pipe; 470, plant heating pipe; 480, sewage discharge pipe;

[0034] 500, heat circulation fan; 510, first circulation pipe; 520, second circulation pipe;

[0035] 600, dehumidification fan; 610, drying and dehumidification pipe;

[0036] 700, waste heat recovery device; 710, waste heat recovery inlet; 720, waste heat recovery outlet; 730, tail gas outlet; 740, first waste heat recovery pipe; 750, second waste heat recovery pipe;

[0037] 800, tail gas treatment device; 810, tail gas treatment pipeline;

[0038] 900, dry sludge bin;

[0039] 1000, sewage backwater pipe; 2000, tap water replenishment pipe. DETAILED DESCRIPTION

[0040] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0041] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0042] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0043] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0044] The embodiment provides a sewage source heat pump sludge drying device, as shown in the drawings. Figures 1-3 As shown in the drawings, the sewage source heat pump sludge drying device comprises a sludge drying box 100, a water-air conditioning unit 200, a water-air heat exchanger 300 and a heat pump unit 400, the top of the sludge drying box 100 is provided with a hot air inlet 110, and a plurality of layers of sludge conveying belts 120 are arranged in the sludge drying box 100, and the plurality of layers of sludge conveying belts 120 are used for carrying and conveying sludge; the water-air conditioning unit 200 comprises a first inlet 210 and a first outlet 220, and the first outlet 220 is communicated with a plant air conditioning pipeline 230; the water-air heat exchanger 300 comprises a hot water inlet 310, a warm water outlet 320 and a hot air outlet 330, the hot air outlet 330 is communicated with the hot air inlet 110 through a hot air supply pipe 340; the heat pump unit 400 comprises a sewage inlet 410, an operating water inlet 420, a cold water outlet 430 and a hot water outlet 440, the sewage inlet 410 is communicated with a sewage source through a sewage inlet pipe 450, the cold water outlet 430 is communicated with the first inlet 210, the hot water outlet 440 is communicated with the first inlet 210 and / or the hot water inlet 310, and the warm water outlet 320 is communicated with the operating water inlet 420 through a warm water return pipe 460.

[0045] As shown in the drawings, Figure 1 , Figure 2 and Figure 3 , the sewage source heat pump sludge drying device extracts low-temperature heat sources from sewage through the heat pump unit 400, and converts the low-temperature heat sources into high-temperature hot air through the water-air heat exchanger 300, so that the high-temperature hot air is directly used for the heating process of the sludge drying box 100, and the utilization efficiency of heat energy is greatly improved; the design of the water-air conditioning unit 200 realizes the linkage operation of the heat pump unit 400 and the plant air conditioning pipeline 230, so that not only the heat source demand of sludge drying can be met, but also waste heat can be delivered to the plant air conditioning system, and the cascade utilization of heat energy is realized; and the hot air enters the sludge drying box 100 from the top, and the plurality of layers of sludge conveying belts 120 arranged in the sludge drying box 100 can convey sludge in layers, increase the drying area, fully contact with the sludge, improve the drying efficiency and shorten the drying time.

[0046] In addition, the sewage source heat pump sludge drying device in the embodiment converts low-grade heat sources in sewage into high-grade heat sources through the cooperation of the heat pump unit 400 and the water-air heat exchanger 300, and simultaneously realizes the drying of sludge, the heating of a plant and the refrigeration, improves the heat energy utilization rate, reduces the dependence on traditional fossil energy, reduces the emission of greenhouse gases and realizes the energy-saving effect of green and low carbon.

[0047] Optionally, as shown in the drawings, Figure 1 and Figure 3As shown, the sewage source heat pump sludge drying device further comprises a heat recycling fan 500, the heat recycling fan 500 comprises a circulating air inlet and a circulating air outlet, the sludge drying box 100 further comprises a hot air outlet 130, the hot air outlet 130 is communicated with the circulating air inlet through a first circulating pipe 510, and the circulating air outlet is communicated with the hot air inlet 110 through a second circulating pipe 520. The heat recycling fan 500 recycles the hot air that is not completely cooled in the sludge drying box 100, reintroduces the hot air into the drying box through the circulating air inlet and the circulating air outlet, and continues to participate in the drying process after being mixed with new hot air, so that heat energy is avoided from being wasted, and the heat energy utilization rate of the system is further improved.

[0048] Optionally, the hot air circulation in the sludge drying box 100 makes the hot air in the drying box more uniformly distributed, which helps the sludge to obtain a more stable hot air environment in the drying process, and further improves the drying efficiency and drying uniformity.

[0049] Optionally, as shown in FIG. 6, Figure 3 As shown, the sludge drying box 100 comprises a wet air outlet 140, the sewage source heat pump sludge drying device further comprises a dehumidifying fan 600 and a waste heat recovery device 700, the dehumidifying fan 600 comprises a dehumidifying inlet and a dehumidifying outlet, the dehumidifying inlet is communicated with the wet air outlet 140 through a drying and dehumidifying pipe 610, and the waste heat recovery device 700 comprises a waste heat recovery inlet 710 and a waste heat recovery outlet 720, the waste heat recovery inlet 710 is communicated with the dehumidifying outlet through a first waste heat recovery pipe 740, and the waste heat recovery outlet 720 is communicated with the circulating air inlet through a second waste heat recovery pipe 750.

[0050] In this embodiment, the wet hot air generated in the sludge drying process is introduced into the dehumidifying fan 600 through the wet air outlet 140, the dehumidifying fan 600 efficiently separates the water in the wet hot air, reduces the water content of the wet air, thereby maintaining the dry environment in the drying box and improving the drying efficiency of the sludge; the dry air discharged from the dehumidifying fan 600 passes through the waste heat recovery device 700, the waste heat part thereof is extracted and reconverted into heat energy required by the drying box, introduced into the circulating air inlet through the second waste heat recovery pipe 750, and blown into the sludge drying box 100 through the heat recycling fan 500, so that the heat is efficiently recycled and used, and energy waste is reduced.

[0051] Optionally, as shown in FIG. 6, Figure 3 As shown, the waste heat recovery device 700 further comprises a tail gas outlet 730, the tail gas outlet 730 is communicated with a tail gas treatment device 800 through a tail gas treatment pipeline 810. The tail gas that is not recycled in the waste heat recovery device 700 is introduced into the tail gas treatment device 800 through the tail gas outlet 730, harmful components (such as particulate matter, volatile organic compounds, odor gas, etc.) in the tail gas are treated, direct emission of the tail gas is avoided to pollute the environment, and environmental protection requirements are met.

[0052] Optionally, the sludge drying box 100 further comprises a dry sludge outlet, and the sewage source heat pump sludge drying device further comprises a dry sludge bin 900, a dry sludge inlet of the dry sludge bin 900 being in communication with the dry sludge outlet, the dry sludge bin 900 being used for crushing the dry sludge, further reducing the volume of the sludge, and making the particles of the sludge more uniform, which is conducive to subsequent transportation, storage and resource utilization. It can be understood that the volume of the dried sludge is significantly reduced, which is convenient for subsequent transportation and processing, reduces processing costs, and creates conditions for resource utilization of the sludge (such as incineration for power generation, brick making, etc.).

[0053] Optionally, the sewage source heat pump sludge drying device further comprises a sewage return pipe 1000, the hot water outlet 440 is connected with the first inlet 210 and / or the sewage return pipe 1000 through a plant heating pipe 470, and the cold water outlet 430 is connected with the first inlet 210 and / or the sewage return pipe 1000 through a sewage discharge pipe 480. By arranging the sewage return pipe 1000, the hot water and the cold water of the heat pump system can be connected with the water air conditioning unit 200 and / or the sewage return pipe 1000 respectively, so as to realize efficient recovery and reuse of heat energy, reduce waste of heat, and further improve the energy efficiency ratio of the system.

[0054] Optionally, the sewage source heat pump sludge drying device further comprises a tap water supplement pipe 2000, the tap water supplement pipe 2000 being in communication with the operating water inlet 420. The tap water supplement pipe 2000 is in communication with the operating water inlet 420, so that when the sewage supply is insufficient or the water loss occurs in the system, the water source can be supplemented in time, so as to ensure the continuity and stability of the operation of the sewage source heat pump sludge drying device.

[0055] Optionally, the sludge drying box 100 is provided with a driving assembly, and the driving assembly is in transmission connection with the multi-layer sludge conveying belt 120. The driving assembly is in transmission connection with the multi-layer sludge conveying belt 120, so that the sludge can be continuously conveyed in the drying box at a set speed, the sludge is ensured to be fully contacted with the hot air, the drying speed is accelerated, and the drying efficiency is improved. In the embodiment, the driving assembly can be a driving motor and a gear and rack transmission assembly, and the cooperation structure of the driving motor and the gear and rack transmission assembly is a prior art, which will not be described herein.

[0056] Optionally, the sludge conveying belt 120 is a mesh belt, the pores of the mesh belt can allow air to flow, the evaporation of water in the sludge can be accelerated, and the drying speed of the sludge is improved. Compared with a common flat conveying belt, the mesh belt is lighter, has strong tensile strength and high temperature resistance, can reduce the burden of the driving motor and the gear and rack transmission assembly, prolong the service life of the driving assembly, and improve the overall energy efficiency.

[0057] Optionally, a temperature sensor is installed at the hot air inlet 110, which is used to detect the temperature of the hot air, and the operator can adjust the equipment operation parameters according to the temperature information detected by the temperature sensor, so as to prevent the temperature from being too high or too low, and ensure that the drying process is always carried out in the best temperature range.

[0058] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A wastewater source heat pump sludge drying equipment, characterized in that, include: A sludge drying box (100) is provided with a hot air inlet (110) at the top of the sludge drying box (100) and multiple sludge conveyor belts (120) are provided inside the sludge drying box (100). The multiple sludge conveyor belts (120) are used to carry and transport sludge. The water-cooled air conditioning unit (200) includes a first inlet (210) and a first outlet (220), the first outlet (220) being connected to the air conditioning pipeline (230) in the plant area; A water-air heat exchanger (300) includes a hot water inlet (310), a warm water outlet (320), and a hot air outlet (330). The hot air outlet (330) is connected to the hot air inlet (110) through a hot air supply pipe (340). The heat pump unit (400) includes a sewage inlet (410), an operating water inlet (420), a cold water outlet (430), and a hot water outlet (440). The sewage inlet (410) is connected to a sewage source through a sewage inlet pipe (450). The cold water outlet (430) is connected to the first inlet (210). The hot water outlet (440) is connected to the first inlet (210) and / or the hot water inlet (310). The warm water outlet (320) is connected to the operating water inlet (420) through a warm water return pipe (460).

2. The wastewater source heat pump sludge drying equipment according to claim 1, characterized in that, The wastewater source heat pump sludge drying equipment also includes a hot air circulation fan (500), which includes a circulating air inlet and a circulating air outlet. The sludge drying box (100) also includes a hot air outlet (130), which is connected to the circulating air inlet through a first circulation pipe (510), and the circulating air outlet is connected to the hot air inlet (110) through a second circulation pipe (520).

3. The wastewater source heat pump sludge drying equipment according to claim 2, characterized in that, The sludge drying box (100) includes a wet air outlet (140), and the wastewater source heat pump sludge drying equipment further includes: A dehumidifying fan (600) includes a dehumidifying inlet and a dehumidifying outlet, wherein the dehumidifying inlet is connected to the humidifying outlet (140) via a drying dehumidifying pipe (610); The waste heat recovery device (700) includes a waste heat recovery inlet (710) and a waste heat recovery outlet (720). The waste heat recovery inlet (710) is connected to the dehumidification outlet through a first waste heat recovery pipe (740), and the waste heat recovery outlet (720) is connected to the circulating air inlet through a second waste heat recovery pipe (750).

4. The wastewater source heat pump sludge drying equipment according to claim 3, characterized in that, The waste heat recovery device (700) also includes an exhaust gas outlet (730), which is connected to the exhaust gas treatment device (800) through an exhaust gas treatment pipeline (810).

5. The wastewater source heat pump sludge drying equipment according to claim 1, characterized in that, The sludge drying box (100) also includes a dry sludge outlet, and the sewage source heat pump sludge drying equipment also includes a dry sludge silo (900). The dry sludge inlet of the dry sludge silo (900) is connected to the dry sludge outlet, and the dry sludge silo (900) is used to crush the dry sludge.

6. The wastewater source heat pump sludge drying equipment according to claim 1, characterized in that, The wastewater source heat pump sludge drying equipment also includes a wastewater return pipe (1000); The hot water outlet (440) is connected to the first inlet (210) and / or the sewage return pipe (1000) via the plant heating pipe (470); The cold water outlet (430) is connected to the first inlet (210) and / or the sewage return pipe (1000) via the sewage discharge pipe (480).

7. The wastewater source heat pump sludge drying equipment according to claim 1, characterized in that, The wastewater source heat pump sludge drying equipment also includes a tap water supply pipe (2000), which is connected to the operating water inlet (420).

8. The wastewater source heat pump sludge drying equipment according to claim 1, characterized in that, The sludge drying box (100) is equipped with a drive assembly, which is connected to the multi-layer sludge conveyor belt (120) for transmission.

9. The wastewater source heat pump sludge drying equipment according to any one of claims 1-8, characterized in that, The sludge conveyor belt (120) is a mesh belt.

10. The wastewater source heat pump sludge drying equipment according to any one of claims 1-8, characterized in that, A temperature sensor is installed at the hot air inlet (110) to detect the hot air temperature.

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