Anti-blocking heat exchanger for sewage source heat pump

Abstract

The utility model is applicable to the technical field of heat exchangers, and provides an anti-blocking heat exchanger for a sewage source heat pump, which comprises a tank body, the tank body is transversely arranged, one end of the tank body is open, an end cover is arranged at the opening of the tank body, a connecting cylinder is obliquely and upwards arranged at the top of the tank body, and a filter cylinder is fixedly connected with an inner cavity of the connecting cylinder. A rotating shaft is rotatably and coaxially arranged in an inner cavity of the filter cylinder, a spiral blade is fixedly connected to the outer surface of the rotating shaft, is of a filter screen structure and is tightly attached to the inner wall face of the filter cylinder, the higher end of the bottom of the filter cylinder is communicated with a blow-off pipe which penetrates through the connecting cylinder and extends downwards and outwards, and a sealing cover is arranged at the bottom end of the blow-off pipe. According to the anti-blocking heat exchanger for the sewage source heat pump, the connecting cylinder is arranged at the top of the tank body of the heat exchanger, and the connecting cylinder filters sewage before the sewage enters the heat exchanger to intercept impurities and dirt in the sewage out of the tank body; meanwhile, the rotating shaft is rotated to drive the spiral blade to rotate, so that impurities and dirt are rotationally and upwards conveyed to the filter pipe drainage hole and discharged out of the filter pipe to prevent blockage.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to an anti-clogging heat exchanger for a sewage source heat pump. Background Art

[0002] Sewage-source heat pumps, a type of water-source heat pump, use sewage as a heat source for building heating, offering significant energy-saving, environmental, and economic benefits. Water's high specific heat capacity also contributes to its superior heat transfer performance. Municipal sewage, with its relatively stable temperature and high thermal potential, possesses excellent macro-thermal characteristics. Its potential as a heat source for building heating is enormous, attracting considerable attention as early as the 1970s. However, clogging and scaling during sewage flow are key factors affecting the efficiency and performance of sewage-source heat pumps.

[0003] Chinese patent CN214250660U provides a heat exchanger for a sewage-source heat pump. This utility model patent employs a filter element installed inside the heat exchanger tank to absorb and filter impurities in the sewage. A cleaning element then removes the precipitated impurities from the tank and discharges them through the drain port. However, this utility model patent fails to consider the possibility that the interior of the heat exchanger is not thoroughly cleaned. Some debris from the sewage that remains inside the heat exchanger could damage the heat exchanger's internal components, affecting its efficiency. Furthermore, the filter and cleaning elements are difficult to remove for routine maintenance and replacement. Utility Model Content

[0004] The utility model provides an anti-clogging heat exchanger for a sewage source heat pump, which aims to solve the problem that the existing sewage source heat pump heat exchanger directly introduces sewage into the tank body of the heat exchanger, and some debris in the uncleaned sewage still accumulates inside the heat exchanger and causes certain damage to the devices inside the heat exchanger, thereby affecting the working efficiency of the heat exchanger.

[0005] The filter bag has a bottom end and a bottom end, and the filter bag has a bottom end and a bottom end. The filter bag has a bottom end and a bottom end. The filter bag has a bottom end and a bottom end.

[0006] Preferably, a mounting plate is fixedly connected to the inside of the end cover, and the mounting plate separates the cavity between the end cover and the tank body into a connecting chamber and a heat exchange chamber that are isolated from each other. A partition plate is fixedly connected between the middle part of the mounting plate and the end cover, and the partition plate separates the connecting chamber into an upper water inlet chamber and a lower water outlet chamber.

[0007] Preferably, a first water inlet pipe is vertically fixedly connected to the top of the outer surface of the end cover, and the first water inlet pipe is communicated with the water inlet bin. A first water outlet pipe is fixedly connected to the bottom of the outer surface of the end cover, and the first water outlet pipe is communicated with the water outlet bin.

[0008] Preferably, the inner cavity of the heat exchange bin is provided with a plurality of U-shaped heat exchange tubes, and both ends of each heat exchange tube pass through the mounting plate transversely and extend to the inner cavities of the water inlet bin and the water outlet bin respectively.

[0009] Preferably, a mounting ring is fixedly connected to the bottom of the inner cavity of the connecting cylinder, a plurality of fixing blocks are fixedly connected to the bottom of the outer ring surface of the filter cylinder, and a plurality of fixing grooves adapted to the fixing blocks are formed on the mounting ring.

[0010] Preferably, a motor for driving the rotating shaft of the spiral blade to rotate is fixedly connected to the higher end of the upper surface of the connecting cylinder.

[0011] Beneficial effects

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the anti-clogging heat exchanger for a sewage source heat pump of the present invention is provided with a connecting tube on the top of the tank body of the heat exchanger. The connecting tube filters the sewage before the sewage enters the heat exchanger, which can effectively intercept the impurities and dirt in the sewage outside the tank body of the heat exchanger. At the same time, the spiral blades are driven to rotate by rotating the rotating shaft to rotate the impurities and dirt upward to the sewage discharge hole of the filter tube and discharge them outside the filter tube to prevent blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the external main view of the utility model;

[0014] Figure 2 This is an internal cross-sectional view of the present utility model;

[0015] Figure 3 This is an enlarged view of the interior of the device tube in the present invention.

[0016] In the figure: 1-end cover, 2-third water inlet pipe, 3-connecting tube, 4-second water outlet pipe, 5-first water inlet pipe, 6-first water outlet pipe, 7-second water outlet pipe, 8-spiral blade, 9-filter cartridge, 10-tank body, 11-partition plate, 12-mounting plate, 13-heat exchange tube, 14-fixing block, 15-mounting ring, 16-sealing cover, 17-motor, 18-water inlet tank, 19-water outlet tank, 20-heat exchange tank. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] See also Figure 1-3 The utility model provides a technical solution: an anti-clogging heat exchanger for a sewage source heat pump, comprising a tank body 10, the tank body 10 is placed horizontally and one end is open, an end cover 1 is provided at the open end of the tank body 10, one end of the top of the tank body 10 is vertically connected to a second water inlet pipe 4, and the other end of the bottom of the tank body 10 is connected to a second water outlet pipe 7, a connecting cylinder 3 is provided on the top of the tank body 10, and the inner cavity of the connecting cylinder 3 is fixedly connected to the filter cartridge 9. The inner cavity of the filter cartridge 9 is rotatably and coaxially provided with a rotating shaft, and a spiral blade 8 is fixedly connected to the outer surface of the rotating shaft. The spiral blade 8 is a filter structure and is tightly attached to the inner wall surface of the filter cartridge 9, and the lower end of the upper surface of the connecting cylinder 3 is vertically provided with a third water inlet pipe 2, the third water inlet pipe 2 is communicated with the lower part of the inner cavity of the filter cartridge 9, and the higher end of the bottom of the filter cartridge 9 is communicated with a sewage pipe that passes through the connecting cylinder 3 and extends to the outside below, and a sealing cap 16 is provided at the bottom end of the sewage pipe.

[0019] In this embodiment, the tank body 10 and the end cap 1 form the outer shell structure of the heat exchanger. Sewage enters the inner cavity of the connecting tube 3 through the third water inlet pipe 2 and flows into the filter cartridge 9 for filtration. It then flows into the second water inlet pipe 4 and into the inner cavity of the tank body 10. After undergoing the heat exchange process, it flows out of the heat exchanger through the second water outlet pipe 7. Because the connecting tube 3 is tilted, sewage accumulates at the bottom of the inner cavity of the connecting tube 3 when it enters the inner cavity of the connecting tube 3. When it accumulates to a certain height and flows through the nozzle of the second water inlet pipe 4, it flows into the second water inlet pipe 4. This is done to appropriately slow the flow rate of sewage entering the heat exchanger, allowing sufficient time for the sewage to be filtered. After the sewage enters the inner cavity of the filter cartridge 9, impurities in the sewage are filtered at the bottom of the inner cavity of the filter cartridge 9. The rotation of the rotating shaft then drives the spiral blades 8 on the rotating shaft to rotate and push the impurities at the bottom upward. The use of the filter structure of the spiral blades 8 is intended to push only the impurities, rather than pushing them along with the water. When the impurities are pushed to a certain height and reach the outlet of the sewage pipe, they will fall into the inner cavity of the sewage pipe. When the cover 16 is opened, the impurities can be discharged outside the heat exchanger.

[0020] Furthermore, a mounting plate 12 is fixedly connected to the interior of the end cover 1, and the mounting plate 12 separates the cavity between the end cover 1 and the tank body 10 into a connecting chamber and a heat exchange chamber 20 that are isolated from each other. A partition plate 11 is fixedly connected between the middle part of the mounting plate 12 and the end cover 1, and the partition plate 11 separates the connecting chamber into an upper water inlet chamber 18 and a lower water outlet chamber 19.

[0021] In this embodiment, when the end cap 1 is removed, the mounting plate 12 and the partition plate are also removed, facilitating cleaning and maintenance, as well as cleaning and replacement of components within the tank body 10. The water inlet 18 and water outlet 19 are also isolated from each other by the partition plate 11. The upper portion of the heat exchange chamber 20 is connected to the second water inlet pipe 4, while the lower portion is connected to the second water outlet pipe 7. Wastewater flows in through the second water inlet pipe 4, enters the heat exchange chamber 20 for heat exchange, and then flows out through the second water outlet pipe 7.

[0022] Furthermore, a first water inlet pipe 5 is vertically fixedly connected to the top of the outer surface of the end cover 1, and the first water inlet pipe 5 is connected to the water inlet bin 18. A first water outlet pipe 6 is fixedly connected to the bottom of the outer surface of the end cover 1, and the first water outlet pipe 6 is connected to the water outlet bin 19.

[0023] The inner cavity of the heat exchange chamber 20 is provided with a plurality of U-shaped heat exchange tubes 13 . Both ends of each heat exchange tube 13 pass through the mounting plate 12 transversely and extend to the inner cavities of the water inlet chamber 18 and the water outlet chamber 19 respectively.

[0024] In this embodiment, the intermediate water flows from the first water inlet pipe 5 into the inner cavity of the water inlet tank 18, and then flows into the heat exchange tube from the pipe mouth of the heat exchange tube 13 in the inner cavity of the water inlet tank 18. When the intermediate water flows from the water inlet tank 18 into the heat exchange tank 20, it will exchange heat with the sewage in the inner cavity of the heat exchange tank 20, and then it will bend and flow into the inner cavity of the water outlet tank 19 from the other pipe mouth of the heat exchange tube 13, and then flow out from the first water outlet pipe 6. At this point, the heat exchange process is completed.

[0025] Furthermore, a mounting ring 15 is fixedly connected to the bottom of the inner cavity of the connecting cylinder 3 , and a plurality of fixing blocks 14 are fixedly connected to the bottom of the outer ring surface of the filter cylinder 9 . The mounting ring 15 is provided with a plurality of fixing grooves adapted to the fixing blocks 14 .

[0026] In this embodiment, the mounting ring 15 plays a certain reinforcing role in the fixation of the filter cartridge 9. When the fixing block 14 at the bottom of the outer ring surface of the filter cartridge 9 corresponds one-to-one with the fixing groove on the mounting ring 15, the filter cartridge 9 will be fixed in the inner cavity of the connecting tube 3 to prevent it from rotating and deviating, which may affect the filtration.

[0027] Furthermore, a motor 17 for driving the rotating shaft of the spiral blade 8 to rotate is fixedly connected to the higher end of the upper surface of the connecting cylinder 3 .

[0028] In this embodiment, the motor 17 is a driving device for the rotating shaft of the spiral blade 8, driving the rotating shaft to rotate and thus driving the spiral blade 8 to rotate.

[0029] The working principle and use process of the present invention: After the present invention is installed and starts working, the sewage enters the inner cavity of the connecting tube 3 from the third water inlet pipe 2 and flows into the filter in the filter cartridge 9, then flows into the second water inlet pipe 4 and flows into the inner cavity of the tank body 10. At the same time, the impurities in the sewage will be filtered at the bottom of the inner cavity of the filter cartridge 9, and then the rotation of the shaft drives the spiral blade 8 on the shaft to rotate, which can rotate and push the impurities at the bottom upward. When the impurities are pushed to a certain height and reach the sewage outlet, they will fall into the inner cavity of the sewage outlet. When the cover 16 is opened, the impurities can be discharged to the outside of the heat exchanger. At the same time, the intermediate water flows from the first water inlet pipe 5 into the inner cavity of the water inlet tank 18, and then flows into the heat exchange tube from the pipe mouth of the heat exchange tube 13 in the inner cavity of the water inlet tank 18. When the intermediate water flows from the water inlet tank 18 into the heat exchange tank 20, it will exchange heat with the sewage in the inner cavity of the heat exchange tank 20. After the heat exchange process, the sewage flows out of the heat exchanger from the second outlet pipe 7, and the intermediate water flows into the inner cavity of the water outlet tank 19 from the other pipe opening of the heat exchange pipe 13, and then flows out from the first outlet pipe 6.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-clogging heat exchanger for a sewage source heat pump, characterized by: The invention comprises a tank body (10), wherein the tank body (10) is placed horizontally and one end is open, an end cover (1) is provided at the open end of the tank body (10), one end of the top of the tank body (10) is vertically connected to a second water inlet pipe (4), and the other end of the bottom of the tank body (10) is connected to a second water outlet pipe (7), and a connecting cylinder (3) is provided on the top of the tank body (10) in an inclined manner upward, the inner cavity of the connecting cylinder (3) is fixedly connected to a filter cartridge (9), and the inner cavity of the filter cartridge (9) is rotatably coaxially provided with a filter cartridge (9). A rotating shaft, a spiral blade (8) is fixedly connected to the outer surface of the rotating shaft, the spiral blade (8) is a filter structure and is closely attached to the inner wall surface of the filter cartridge (9), a third water inlet pipe (2) is vertically provided at the lower end of the upper surface of the connecting cylinder (3), the third water inlet pipe (2) is communicated with the lower part of the inner cavity of the filter cartridge (9), and the upper end of the bottom of the filter cartridge (9) is communicated with a sewage pipe that passes through the connecting cylinder (3) and extends downward to the outside, and a sealing cover (16) is provided at the bottom end of the sewage pipe.

2. The anti-clogging heat exchanger for a sewage source heat pump according to claim 1, characterized in that: A mounting plate (12) is fixedly connected to the interior of the end cover (1), and the mounting plate (12) separates the cavity between the end cover (1) and the tank body (10) into a communicating chamber and a heat exchange chamber (20) that are isolated from each other. A partition plate (11) is fixedly connected between the middle portion of the mounting plate (12) and the end cover (1), and the partition plate (11) separates the communicating chamber into an upper water inlet chamber (18) and a lower water outlet chamber (19).

3. The anti-clogging heat exchanger for a sewage source heat pump according to claim 2, characterized in that: A first water inlet pipe (5) is vertically fixedly connected to the top of the outer surface of the end cover (1), and the first water inlet pipe (5) is communicated with the water inlet bin (18). A first water outlet pipe (6) is fixedly connected to the bottom of the outer surface of the end cover (1), and the first water outlet pipe (6) is communicated with the water outlet bin (19).

4. The anti-clogging heat exchanger for a sewage source heat pump according to claim 2, characterized in that: The inner cavity of the heat exchange chamber (20) is provided with a plurality of U-shaped heat exchange tubes (13), and both ends of each heat exchange tube (13) pass through the mounting plate (12) transversely and extend to the inner cavities of the water inlet chamber (18) and the water outlet chamber (19), respectively.

5. The anti-clogging heat exchanger for a sewage source heat pump according to claim 1, characterized in that: A mounting ring (15) is fixedly connected to the bottom of the inner cavity of the connecting cylinder (3), a plurality of fixing blocks (14) are fixedly connected to the bottom of the outer ring surface of the filter cylinder (9), and a plurality of fixing grooves adapted to the fixing blocks (14) are formed on the mounting ring (15).

6. The anti-clogging heat exchanger for a sewage source heat pump according to claim 1, characterized in that: A motor (17) for driving the rotating shaft of the spiral blade (8) to rotate is fixedly connected to the higher end of the upper surface of the connecting cylinder (3).

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