Heat pump evaporation and concentration device with waste heat recovery function

Abstract

The utility model relates to the technical field of industrial evaporation and concentration, in particular to a heat pump evaporation and concentration device with a waste heat recovery function. According to the heat pump evaporation and concentration device with the waste heat recovery function, the filter screen can be automatically and manually cleaned, and the phenomenon that the filter screen is blocked due to the fact that the filter screen is not cleaned in place is avoided. A heat pump evaporation and concentration device with a waste heat recovery function comprises a gas collecting pipe, a ventilation pipe and the like, and the right side of the gas collecting pipe is connected with the ventilation pipe. When waste gas is introduced into the ventilation pipe, the fan blades, the rotating shaft and the bevel gear are driven to rotate, the scraping plate is driven to rotate and the filter screen is cleaned, when wind exists outside, the wind wheel can be blown to rotate to enable the scraping plate to rotate, and when the waste gas stops being introduced and no wind exists outside, the bevel gear is driven to move in a meshed mode by manually rotating the wind wheel, so that the filter screen is cleaned. And the scraping plate rotates to clean the filter screen, so that the effects that the filter screen can be automatically and manually cleaned, and blockage caused by the fact that the filter screen is not cleaned in place is avoided are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial evaporation concentration technical field especially, relates to a heat pump evaporation concentration device with waste heat recovery. BACKGROUND

[0002] In chemical industry, pharmacy, food processing and other industries, evaporation concentration is a common process, which is used to separate solvent from solution to obtain concentrated product. Traditional evaporation concentration equipment usually has high energy consumption, and a large amount of waste heat is not effectively utilized, resulting in low overall energy efficiency. In recent years, with the enhancement of energy saving and environmental protection consciousness and the development of technology, the combination of heat pump technology and waste heat recovery system has become an important way to improve the efficiency of evaporation concentration.

[0003] The existing heat pump evaporation concentration device with waste heat recovery usually sets a filter screen to filter the impurities in the waste gas when recovering the heat in the waste gas. In order to avoid the filter screen from being blocked, a scraper is usually set to clean the filter screen. However, since the rotation of the scraper usually depends on the flow of the waste gas, when the waste gas stops flowing, the scraper cannot rotate to clean the filter screen, which may cause the filter screen to be blocked due to incomplete cleaning.

[0004] Therefore, a heat pump evaporation concentration device with waste heat recovery is developed, which can automatically and manually clean the filter screen to avoid blockage due to incomplete cleaning. SUMMARY

[0005] In order to overcome the shortcomings of the existing heat pump evaporation concentration device with waste heat recovery, in which the rotation of the scraper usually depends on the flow of the waste gas, when the waste gas stops flowing, the scraper cannot rotate to clean the filter screen, which may cause the filter screen to be blocked due to incomplete cleaning, the utility model provides a heat pump evaporation concentration device with waste heat recovery, which can automatically and manually clean the filter screen to avoid blockage due to incomplete cleaning.

[0006] The technical implementation scheme of the utility model is: a heat pump evaporation concentration device with waste heat recovery, comprising a gas collecting pipe, a ventilation pipe, a heat exchanger, a connecting pipe, an evaporation concentrator, a discharge pipe, a discharge pipe, a return pipe, a filter screen and a cleaning assembly. The right side of the gas collecting pipe is connected with the ventilation pipe. The right side of the ventilation pipe is connected with the heat exchanger. The right side of the heat exchanger is connected with the connecting pipe. The right side of the connecting pipe is connected with the evaporation concentrator. The upper side of the evaporation concentrator is connected with the discharge pipe. The right side of the evaporation concentrator is connected with the discharge pipe. The rear side of the evaporation concentrator is connected with the return pipe through a circulating pump. The left side of the return pipe is connected with the heat exchanger. The left part of the ventilation pipe is connected with the filter screen. The ventilation pipe is provided with a cleaning assembly which can clean the filter screen.

[0007] Optionally, the diameter of the gas collecting pipe is larger than that of the ventilation pipe.

[0008] Optionally, the feed tube can be wider at the top and narrower at the bottom.

[0009] Optionally, it also includes a solenoid valve, which is installed on the ventilation duct.

[0010] Optionally, the cleaning assembly includes a fan wheel, a rotating shaft, bevel gears, a support frame, fan blades, and a scraper. The fan wheel is rotatably connected to the upper left side of the ventilation duct, and two support frames are connected to the inner left side of the ventilation duct. A rotating shaft is rotatably connected to the left support frame, and a fan blade is connected to the left side of the rotating shaft. A scraper is rotatably connected to the right support frame. The scraper contacts the filter screen. Bevel gears are connected to the fan wheel, rotating shaft, and scraper, and adjacent bevel gears mesh with each other.

[0011] Optionally, the support frame is provided with multiple ventilation slots.

[0012] This invention has the following advantages: When exhaust gas enters the ventilation duct, it drives the fan blades and shaft to rotate, and the bevel gear meshes, causing the scraper to rotate and clean the filter screen. When there is wind outside, it can also blow the impeller to rotate, causing the scraper to rotate. When the exhaust gas stops flowing in or there is no wind outside, the impeller can be manually rotated to drive the bevel gear meshing, causing the scraper to rotate and clean the filter screen. This achieves the effect of automatically and manually cleaning the filter screen, avoiding clogging caused by inadequate cleaning. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the wind turbine and other components of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the reflux pipe and other components of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of this utility model.

[0017] Figure 5 This is a three-dimensional structural diagram of the filter screen and other components of this utility model.

[0018] In the above attached diagram: 1: Gas collecting pipe, 2: Ventilation pipe, 3: Heat exchanger, 4: Connecting pipe, 5: Evaporator / Concentrator, 6: Feed pipe, 7: Discharge pipe, 8: Return pipe, 9: Solenoid valve, 10: Filter screen, 11: Fan wheel, 12: Rotating shaft, 13: Bevel gear, 131: Support frame, 14: Fan blade, 15: Scraper. Detailed Implementation

[0019] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in further detail below in combination with the drawings. Only this declaration, the up, down, left, right, front, back, inside, outside and other orientation words appearing in the text or about to appear of the utility model, only take the drawings of the utility model as the benchmark, it is not the specific limitation of the utility model.

[0020] A heat pump evaporation concentration device with waste heat recovery, as shown in Figures 1-5 The utility model discloses a heat pump evaporation concentration device with waste heat recovery, as shown in the drawings, including the collecting pipe 1, the ventilation pipe 2, the heat exchanger 3, the connecting pipe 4, the evaporation concentrator 5, the downcomer 6, the discharge pipe 7, the backflow pipe 8, the electromagnetic valve 9, the filter screen 10 and the cleaning assembly, the collecting pipe 1 right side is connected with the ventilation pipe 2, the pipe diameter of the collecting pipe 1 is greater than the ventilation pipe 2, is convenient for introducing waste gas, the ventilation pipe 2 right side is connected with the heat exchanger 3, the heat exchanger 3 right side is connected with the connecting pipe 4, the connecting pipe 4 right side is connected with the evaporation concentrator 5, the evaporation concentrator 5 upper side is connected with the downcomer 6, the downcomer 6 is big down small, is convenient for discharging, the evaporation concentrator 5 right side is connected with the discharge pipe 7, the evaporation concentrator 5 rear side is connected with the backflow pipe 8 through the circulating pump, the backflow pipe 8 left side is connected with the heat exchanger 3, the ventilation pipe 2 is equipped with the electromagnetic valve 9, the ventilation pipe 2 left part is connected with the filter screen 10, and the ventilation pipe 2 is equipped with cleaning assembly.

[0021] As shown in Figure 1 , Figure 4 and Figure 5 The cleaning assembly includes a fan wheel 11, a shaft 12, a bevel gear 13, a support frame 131, a fan blade 14 and a scraper 15, the ventilation pipe 2 left part upper side is rotatably connected with the fan wheel 11, the ventilation pipe 2 left part inner side is connected with two left and right support frames 131, three ventilation grooves are formed in the support frame 131, so that the waste gas is not blocked, the shaft 12 is rotatably connected to the left side of the support frame 131, the fan blade 14 is connected to the left side of the shaft 12, the scraper 15 is rotatably connected to the right side of the support frame 131, the scraper 15 is in contact with the filter screen 10, the fan wheel 11, the shaft 12 and the scraper 15 are connected with the bevel gear 13, and the adjacent two bevel gears 13 are meshed.

[0022] When the utility model is used, first, the gas collecting pipe 1 is connected at the waste gas discharge passage, then the material to be evaporated and concentrated is added into the evaporative concentrator 5 from the discharging pipe 6, the electromagnetic valve 9 is opened, the waste gas enters the heat exchanger 3 from the ventilation pipe 2, the heat in the waste gas is exchanged to the working medium, then the circulating pump is started, the heated medium is passed into the evaporative concentrator 5 from the connecting pipe 4, the material is evaporated and concentrated, after the material is evaporated and concentrated, the material is discharged from the discharging pipe 7, when the medium temperature is insufficient, the circulating pump is started, the medium in the evaporative concentrator 5 is passed into the heat exchanger 3 from the backflow pipe 8 to exchange heat, the filter screen 10 filters the waste gas, when the waste gas is passed into the ventilation pipe 2, the fan blade 14 is driven to rotate, the rotating shaft 12 is rotated, the bevel gear 13 is engaged to move, the scraper 15 is driven to rotate, the filter screen 10 is cleaned, when there is wind outside, the wind wheel 11 can also be rotated, the scraper 15 is driven to rotate, the filter screen 10 is cleaned, when the waste gas stops being passed and there is no wind outside, the wind wheel 11 can be manually rotated, the bevel gear 13 is engaged to move, the scraper 15 is rotated to clean the filter screen 10, so that the filter screen 10 can be automatically and manually cleaned, avoiding the filter screen 10 from being blocked due to incomplete cleaning.

[0023] Although the utility model is described in detail with reference to the above embodiment, it is obvious to those skilled in the art through the disclosure, and various changes or modifications can be made to the utility model without departing from the principles and spirit of the utility model defined in the claims. Therefore, the detailed description of the embodiment of the disclosure is used to explain, not to limit the utility model, and the protection scope is defined by the content of the claims.

Claims

1. A heat pump evaporation concentration apparatus with waste heat recovery, characterized by: The utility model relates to a kind of evaporative concentrators, including gas-collecting pipe (1), ventilation pipe (2), heat exchanger (3), connecting pipe (4), evaporative concentrator (5), downcomer (6), discharge pipe (7), backflow pipe (8), filter screen (10) and cleaning assembly, gas-collecting pipe (1) is connected with ventilation pipe (2) right side, ventilation pipe (2) is connected with heat exchanger (3) right side, heat exchanger (3) is connected with connecting pipe (4) right side, connecting pipe (4) is connected with evaporative concentrator (5) right side, evaporative concentrator (5) is connected with downcomer (6) upper side, evaporative concentrator (5) is connected with discharge pipe (7) right side, evaporative concentrator (5) is connected with backflow pipe (8) through circulation pump rear side, backflow pipe (8) is connected with heat exchanger (3) left side, ventilation pipe (2) left part is connected with filter screen (10), and ventilation pipe (2) is equipped with the cleaning assembly that can clean filter screen (10).

2. A heat pump evaporation concentration apparatus with waste heat recovery according to claim 1, characterized in that: The pipe diameter of the gas-collecting pipe (1) is greater than that of the ventilation pipe (2).

3. A heat pump evaporation concentration apparatus with waste heat recovery according to claim 1, characterized in that: The downcomer (6) is large at the top and small at the bottom.

4. A heat pump evaporation concentration apparatus with waste heat recovery according to claim 1, characterized in that: The utility model also includes a solenoid valve (9) disposed on the ventilation pipe (2).

5. A heat pump evaporation concentration apparatus with waste heat recovery according to claim 1, characterized in that: The cleaning assembly includes a fan wheel (11), a rotating shaft (12), bevel gears (13), support frames (131), fan blades (14) and a scraper (15). The fan wheel (11) is rotatably connected to the upper left part of the ventilation pipe (2). The ventilation pipe (2) is connected with two support frames (131) on the inner left side. The rotating shaft (12) is rotatably connected to the left support frame (131). The fan blades (14) are connected to the left side of the rotating shaft (12). The scraper (15) is rotatably connected to the right support frame (131). The scraper (15) is in contact with the filter screen (10). The fan wheel (11), the rotating shaft (12) and the scraper (15) are all connected with bevel gears (13). Adjacent bevel gears (13) are meshed with each other.

6. A heat pump evaporation concentration apparatus with heat recovery according to claim 5, characterized in that: The support frames (131) are provided with a plurality of ventilation grooves.

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