Heat exchange equipment and heat exchange method for urban sewage treatment

Abstract

The present invention is applicable to the technical field of heat exchange equipment, and provides a heat exchange equipment and a heat exchange method for urban sewage treatment, including a filter unit, the filter unit including a horizontally arranged filter box, the filter box is divided into a filter bin and a material exchange bin, and a plurality of groups of filter plates are equidistantly arranged inside the filter box; a material exchange unit, the material exchange unit including a material storage plate installed inside the material exchange bin, an adjustment component, and a material exchange hatch assembly arranged between the filter bin and the material exchange bin. The device solves the problem that a large amount of hot steam overflows when replacing the filter plate, affecting the environment and corroding the equipment, and that grease adheres to the sewage during heat exchange and reduces the heat exchange efficiency, and achieves the effect of separating the filter plate to be replaced from the filter box, avoiding the overflow of acidic and alkaline hot steam when the filter plate is replaced, affecting the environment and corroding the equipment, and at the same time, using a baffle to clean the grease inside the heat exchange equipment after the heat exchange is completed, avoiding the effect of grease adhesion and sedimentation affecting the heat exchange efficiency and corroding the heat exchange equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and more specifically, to heat exchange equipment and a heat exchange method thereof for urban sewage treatment. Background Art

[0002] Urban sewage refers to domestic sewage, industrial wastewater and runoff sewage within the urban area. Urban sewage heat exchange technology is an environmentally friendly and energy-saving technology that uses the heat energy in urban sewage for heating and cooling. This technology is achieved through a sewage source heat pump system.

[0003] Sewage heat exchange equipment is the front-end product of the sewage source heat pump system. It is mainly used to extract low-grade heat energy dispersed in urban primary sewage, industrial wastewater, etc. in winter, and transfer it to the heat pump unit through intermediate water to heat the building; in summer, it transfers the heat in the building to the sewage to achieve cooling. This technology provides an excellent choice in energy saving and consumption reduction, and effectively solves the problems of blockage and corrosion in sewage utilization.

[0004] The existing sewage heat exchange technology needs to filter the solid impurities in the sewage before heat exchange treatment, so as to avoid clogging of the sewage heat exchange equipment by impurities. The filler used for filtering needs to be replaced after a period of use. When replacing the filler, the residual hot steam inside the filter equipment will overflow into the air in large quantities. Due to the influence of the acidity and alkalinity of urban sewage, the overflowing hot steam will not only affect the environment, but also corrode the sewage heat exchange equipment.

[0005] On the other hand, filtering urban sewage does not process the grease contained in it. In the subsequent heat exchange process, the grease in the sewage will precipitate during the cooling process and adhere to the heat exchange equipment. Grease adhesion will reduce the heat exchange efficiency. In the prior art, alkaline substances are generally used to remove the attached grease. However, alkaline substances themselves will also corrode the heat exchange equipment, reducing the service life of the heat exchange equipment. In severe cases, the damage will cause the sewage to pollute the clean water. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a heat exchange equipment and a heat exchange method for urban sewage treatment that can separate the filter plate that needs to be replaced from the filter box to prevent the acidic and alkaline hot steam from overflowing and affecting the environment and corroding the equipment when the filter plate is replaced. At the same time, after the heat exchange is completed, the grease inside the heat exchange equipment is cleaned by using the baffle plate to prevent the grease from adhering and settling and affecting the heat exchange efficiency and corroding the heat exchange equipment.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A heat exchange device for treating urban sewage, comprising a filter unit, the filter unit comprising a horizontally arranged filter box, the filter box being divided into a filter bin and a material exchange bin, wherein a plurality of groups of filter plates are equidistantly arranged inside the filter box; a material exchange unit, the material exchange unit comprising a material storage plate installed inside the material exchange bin, an adjustment component, and a material exchange hatch component arranged between the filter bin and the material exchange bin, the material storage plate being installed in the middle of the material exchange bin, and a material taking component capable of clamping the filter plate is installed on one side of the adjustment component close to the filter bin; a heat exchange unit, the heat exchange unit comprising a water inlet box component communicated with the filter box, a heat exchange bin communicated with the water inlet box component, a cleaning bin arranged at the bottom of the heat exchange bin, and a floating box component communicated with the heat exchange bin, The top of the heat exchange bin is arranged in a circular shape, and a plurality of groups of heat exchange tubes are arranged inside the heat exchange bin, a horizontal cleaning portion is arranged at the bottom of the heat exchange bin, and an impurity discharge port is opened on the cleaning portion close to the cleaning bin; a cleaning unit, the cleaning unit includes two groups of guide assemblies installed on the side wall of the circular part of the heat exchange bin and a cleaning assembly sleeved on the outer wall of the heat exchange tube, the cleaning assembly includes an upper baffle plate arranged on the top of the plurality of groups of heat exchange tubes and a lower baffle plate arranged at the bottom of the plurality of groups of heat exchange tubes; a cleaning unit, the cleaning unit includes a scraping assembly installed on the cleaning portion and a cleaning bin door assembly installed on the top of the impurity discharge port, the scraping assembly includes symmetrically arranged scraping rails and a scraper slidably installed on the scraping rails.

[0009] The present invention is further configured as follows: two groups of guide grooves whose shapes are adapted to the shapes of the filter plates are symmetrically arranged at the top and bottom of the filter bin corresponding to the positions of the filter plates, a water outlet is provided on the side wall of the filter bin close to the heat exchange unit, and a water inlet is provided on the side away from the heat exchange unit, and a connecting pipe is connected to the water outlet.

[0010] The present invention is further configured as follows: a material taking door is provided on the material changing bin, the adjustment component includes a horizontal slide rail arranged along the horizontal direction and a vertical slide rail arranged along the vertical direction, and the material taking component includes symmetrically arranged clamping claws and a rotating head installed on the clamping claws.

[0011] The present invention is further configured as follows: the material changing cabin door assembly includes a material changing rack arranged between the filter bin and the material changing bin, the material changing rack is provided with an upper slide rail and a lower slide rail on one side close to the material changing bin, the upper slide rail and the lower slide rail are arranged in a horizontal direction, and two sets of sliding doors are slidably installed between the two.

[0012] By adopting the above technical solution, the two sets of sliding frames slide relative to the upper slide rail, and can synchronously drive the sliding door connected thereto to slide along the upper slide rail and the lower slide rail, thereby realizing the opening and closing of the refueling cabin door assembly. By setting it between the filter bin and the refueling bin, the filter bin and the refueling bin can be separated.

[0013] The present invention is further configured as follows: the water inlet tank assembly includes a pipe box configured as a hollow cylindrical structure, a clean water inlet is provided at the top of the pipe box, a clean water outlet is provided at the bottom, and a fixed tube sheet whose shape matches the shape of the heat exchange tube is provided inside the pipe box; the floating tank assembly includes a floating head cover configured as a hollow cylindrical structure and a floating tube sheet whose shape matches the shape of the heat exchange tube.

[0014] The present invention is further configured as follows: a sewage inlet is provided at the top of the heat exchange bin and a sewage outlet is provided at the bottom; the cleaning bin is configured as a semicircular structure and is arranged on one side close to the floating tank assembly; a cleaning outlet is provided at the bottom of the cleaning bin.

[0015] The present invention is further configured as follows: each group of the guide assemblies includes a sliding guide rail arranged along the direction of the heat exchange chamber, a connecting piece is slidably installed at the bottom of the sliding guide rail through a pulley, and a side wall of the connecting piece is connected to the cleaning assembly.

[0016] The present invention is further configured as follows: multiple groups of upper baffles and lower baffles are equidistantly arranged along the direction of the heat exchange bin, and are spaced apart from each other; connecting rods are provided between each group of upper baffles and lower baffles for connection; the upper baffles are adapted in shape to the lower baffles, and several groups of annular cleaning blade heads are provided thereon at positions corresponding to the positions of the heat exchange tubes.

[0017] By adopting the above technical solution, when cleaning grease, a group of upper baffles and lower baffles connected to the connecting piece synchronously follow the pulley to slide along the direction of the sliding guide rail, and then under the action of the connecting rod, each group of upper baffles and lower baffles are driven to slide. During the sliding process of each group of upper baffles and lower baffles along the outer wall of the heat exchange tube, the annular cleaning blade head thereon can clean the grease attached to the outer wall of the heat exchange tube.

[0018] The present invention is further configured as follows: the scraping slide rail is arranged along the direction of the cleaning part, and a scraping slider is slidably installed on the top of the scraping slide rail, a scraper is arranged between the two groups of scraping sliders, and the bottom of the scraper abuts against the top of the cleaning part; the cleaning bin door assembly includes a sliding bar arranged at one end of the cleaning part close to the floating box assembly, and multiple groups of sliding parts are slidably installed inside the sliding bar, and a cleaning door is connected inside the sliding part.

[0019] By adopting the above technical solution, the scraping drive can drive the scraping slider to slide along the scraping slide rail, and synchronously drive the scraper to move, so as to scrape the grease deposited in the cleaning part to the impurity discharge port; the pulley can drive multiple groups of sliding parts to slide synchronously along the direction of the sliding bar, thereby synchronously driving the cleaning door to move, thereby realizing the opening and closing of the impurity discharge port.

[0020] The heat exchange method for urban sewage treatment, according to the heat exchange equipment for urban sewage treatment described above, comprises the following steps:

[0021] S1. Before heat exchange, the refueling cabin door assembly is kept closed, the cleaning cabin door assembly is kept closed, and the sewage enters the filter cabin for filtration;

[0022] S2, the sewage is filtered and enters the heat exchange chamber, while the clean water enters the heat exchange tube through the water inlet tank assembly for heat exchange;

[0023] S3. After the heat exchange is completed, the material exchange door assembly opens, and the adjustment assembly slides to drive the material taking assembly to clamp the filter plate;

[0024] S4, after the material taking component transfers the filter plate from the inside of the filter bin to the inside of the material changing bin, the filter plate is turned and placed on the material storage plate;

[0025] S5. The refueling hatch assembly is closed, and the filter plate woven on the storage plate is replaced;

[0026] S6. After the heat exchange is completed, the upper baffle plate and the lower baffle plate are driven to slide along the heat exchange tube by two sets of guide components to clean the grease attached to the outer wall of the heat exchange tube;

[0027] S7, after the grease settles down to the top of the cleaning part, the cleaning chamber door assembly is opened, and the scraper slides along the scraping rail to scrape the grease on the cleaning part to the impurity discharge port;

[0028] S8. Grease enters the cleaning bin through the impurity discharge port and is finally discharged from the cleaning bin to complete the cleaning.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. By setting it between the filter bin and the material change bin, the filter bin and the material change bin can be separated. When filtering, the material change hatch assembly is closed to ensure normal filtration; when replacing the filter plate, the material change hatch assembly is opened for easy replacement. By opening and closing the material change hatch assembly, the filter bin and the material change bin can be fully separated on the basis of ensuring normal filtration, thereby effectively avoiding the overflow of a large amount of acidic and alkaline hot steam when replacing the filter plate, which affects the environment and corrodes the equipment.

[0031] 2. When cleaning grease, each group of upper baffles and lower baffles synchronously follow the pulley to slide along the direction of the sliding guide rail. During this process, the annular cleaning blade on it can clean the grease attached to the outer wall of the heat exchange tube, which can not only effectively prevent grease accumulation and reduce heat exchange efficiency, but also prevent alkaline flushing and cleaning of grease from corroding the heat exchange tube, reducing the service life of the heat exchange tube and causing sewage leakage to pollute the clean water.

[0032] 3. The impurity discharge port is opened and closed by moving the cleaning door, and the grease deposited in the cleaning part is scraped to the impurity discharge port by sliding the scraper, so that the grease can enter the cleaning bin from the impurity discharge port and finally be discharged from the cleaning outlet. The change of the opening and closing state of the impurity discharge port can not only ensure that the normal mechanical energy of heat exchange is not affected, but also facilitate the grease deposited in the cleaning part to enter the cleaning bin from the impurity discharge port for discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic structural diagram of the heat exchange equipment used for urban sewage treatment according to the present invention.

[0034] Figure 2 It is a schematic diagram of the explosion structure inside the filter unit of the present invention.

[0035] Figure 3 It is a structural schematic diagram of the filter plate in the present invention.

[0036] Figure 4 It is a schematic diagram of the structure of the regulating component and the material taking component in the present invention.

[0037] Figure 5 It is a state schematic diagram of the refueling hatch door assembly in the present invention.

[0038] Figure 6 This is a schematic diagram of the explosion structure of the refueling hatch assembly in the present invention from another perspective.

[0039] Figure 7 It is a schematic diagram of the explosion structure inside the heat exchange unit in the present invention.

[0040] Figure 8 It is a schematic diagram of the explosion structure inside the heat exchange bin in the present invention.

[0041] Fig. 9 It is a schematic diagram of the structure of the cleaning unit in the present invention.

[0042] Fig.10 It is a schematic diagram of the exploded structure of the guide assembly in the present invention.

[0043] Fig.11 It is a schematic diagram of the structure of the cleaning component in the present invention.

[0044] Fig.12 It is a schematic diagram of the exploded structure of the scraping component in the present invention.

[0045] Fig.13 It is a schematic diagram of the explosion structure of the cleaning chamber door assembly in the present invention.

[0046] Description of reference numerals: 1, filter unit; 11, filter box; 111, filter bin; 112, material change bin; 12, water inlet; 13, water outlet; 14, connecting pipe; 15, filter plate; 16, guide groove;

[0047] 2. Material changing unit; 21. Material storage plate; 22. Material taking door; 23. Adjustment assembly; 231. Horizontal drive; 232. Horizontal slide rail; 233. Vertical slide rail; 234. Vertical drive; 24. Material taking assembly; 241. Driving member; 242. Rotating head; 243. Clamping claw; 25. Material changing door assembly; 251. Material changing rack; 252. Upper slide rail; 253. Lower slide rail; 254. Sliding rack; 255. Sliding door;

[0048] 3. Heat exchange unit; 31. Water inlet box assembly; 311. Pipe box; 312. Fixed tube sheet; 313. Clean water inlet; 314. Clean water outlet; 32. Heat exchange chamber; 321. Sewage inlet; 322. Sewage outlet; 323. Cleaning unit; 324. Impurity outlet; 325. Heat exchange tube; 33. Cleaning chamber; 331. Cleaning outlet; 34. Floating box assembly; 341. Floating tube sheet; 342. Floating head cover;

[0049] 4. Cleaning unit; 41. Guide assembly; 411. Sliding guide rail; 412. Pulley; 413. Sliding drive; 414. Connecting piece; 42. Cleaning assembly; 421. Upper baffle plate; 422. Lower baffle plate; 423. Annular cleaning blade head; 424. Connecting rod;

[0050] 5. Cleaning unit; 51. Scraping assembly; 511. Scraping drive; 512. Scraping rail; 513. Scraping slider; 514. Scraper; 52. Cleaning bin door assembly; 521. Sliding bar; 522. Pulley; 523. Sliding member; 524. Cleaning door. DETAILED DESCRIPTION

[0051] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0052] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0053] See also Figure 1-13 , the present invention provides the following technical solutions:

[0054] For example, see Figure 1-6, including a filter unit 1 and a material changing unit 2. The filter unit 1 includes a horizontally arranged filter box 11, which is arranged as a hollow rectangular structure, and its interior is divided into a filter bin 111 and a material changing bin 112. A filter plate 15 is arranged inside the filter box 11, and a material changing unit 2 is arranged inside the material changing bin 112. When the filter plate 15 is replaced, the material changing unit 2 can transfer the filter plate 15 from the filter bin 111 to the inside of the material changing bin 112 to avoid a large amount of hot steam inside the filter bin 111 from overflowing.

[0055] See also Figure 1-6 The side wall of the filter chamber 111 is provided with a water outlet 13 on the side close to the heat exchange unit 3 and a water inlet 12 on the side away from the heat exchange unit 3. Sewage can enter the filter chamber 111 from the water inlet 12 for filtration, and can be discharged from the water outlet 13 after filtration. The water outlet 13 is connected to a connecting pipe 14, which is connected to the heat exchange unit 3. Sewage from the water outlet 13 can flow through the connecting pipe 14 into the heat exchange unit 3 for heat exchange.

[0056] See also Figure 1-6 Multiple groups of filter plates 15 are arranged equidistantly inside the filter chamber 111, and two groups of guide grooves 16 whose shapes match the shapes of the filter plates 15 are symmetrically arranged at the top and bottom of the filter chamber 111 corresponding to the positions of the filter plates 15. Each group of filter plates 15 is inserted between the two groups of guide grooves 16, and the guide grooves 16 can not only limit the position of the filter plates 15, but also play an auxiliary guiding role when the filter plates 15 are replaced.

[0057] See also Figure 1-6 The material changing unit 2 includes a material storage plate 21 installed inside the material changing bin 112. The material storage plate 21 is installed in the middle of the material changing bin 112. The replaced filter plate 15 can be placed on the material storage plate 21 for stacking. A material taking door 22 is provided on the material changing bin 112. By opening the material taking door 22, the filter plate 15 placed on the top of the material storage plate 21 can be taken out for replacement. An adjustment component 23 is installed on one side of the material storage plate 21. The adjustment component 23 includes a horizontal slide rail 232 arranged in the horizontal direction. A horizontal drive 231 is installed at the end of the horizontal slide rail 232, and a vertical slide rail 233 is slidably installed on the top thereof. A vertical drive 234 is installed at the end of the vertical slide rail 233, and a material taking component 24 that can clamp the filter plate 15 is slidably installed on the side close to the filter bin 111.

[0058] See also Figure 1-6The material taking assembly 24 is slidably mounted on the vertical slide rail 233, and a driving member 241 is arranged inside the material taking assembly 24. The driving member 241 is connected with a rotating head 242 and a clamping claw 243 in sequence on the side close to the filter bin 111. The clamping claw 243 is symmetrically arranged, the rotating head 242 can drive the two groups to rotate synchronously, and the driving member 241 can drive the clamping claw 243 to open and close, thereby completing the clamping of the filter plate 15. Through the sliding of the vertical slide rail 233 relative to the horizontal slide rail 232, the sliding of the material taking assembly 24 relative to the vertical slide rail 233 can synchronously drive the clamping claw 243 to move, thereby transferring the filter plate 15 from the inside of the filter bin 111 to the material storage plate 21 inside the material replacement bin 112, thereby completing the replacement of the filter plate 15.

[0059] See also Figure 1-6 A refueling door assembly 25 is provided between the filter bin 111 and the refueling bin 112, and the refueling door assembly 25 includes a refueling rack 251 provided between the filter bin 111 and the refueling bin 112. The shape of the refueling rack 251 is adapted to the internal shape of the filter bin 111 and the refueling bin 112, so as to separate the filter bin 111 and the refueling bin 112. An upper slide rail 252 and a lower slide rail 253 are provided on the refueling rack 251 near the refueling bin 112. The upper slide rail 252 and the lower slide rail 253 are arranged in the horizontal direction, and two groups of sliding racks 254 are slidably installed between the two. A group of sliding doors 255 are connected to the bottom of each group of sliding racks 254. The two groups of sliding racks 254 slide relative to the upper slide rail 252, and can synchronously drive the sliding doors 255 connected thereto to slide along the upper slide rail 252 and the lower slide rail 253, thereby realizing the opening and closing of the refueling door assembly 25. By setting it between the filter bin 111 and the material change bin 112, the filter bin 111 and the material change bin 112 can be separated. When filtering, the material change hatch assembly 25 is closed to ensure normal filtering; when replacing the filter plate 15, the material change hatch assembly 25 is opened for easy replacement. By opening and closing the material change hatch assembly 25, the filter bin 111 and the material change bin 112 can be fully separated on the basis of ensuring normal completion of filtering, thereby effectively preventing a large amount of acidic and alkaline hot steam from overflowing when replacing the filter plate 15, thereby affecting the environment and corroding the equipment.

[0060] For example 2, please refer to Figure 1 , Figure 7 and Figure 9-11, this embodiment 2 makes the following improvements on the basis of embodiment 1. Although the opening and closing of the refueling hatch assembly 25 can effectively prevent the acidic and alkaline hot steam from overflowing in large quantities when replacing the filter plate 15, affecting the environment and corroding the equipment. However, during the heat exchange process after the sewage is filtered, the grease in it will gradually precipitate during the sewage cooling process, and then adhere to the surface of the heat exchange unit 3, which will not only reduce the heat exchange efficiency of the heat exchange unit 3, but also the alkaline substances will further corrode the heat exchange unit 3 when cleaning the grease, reducing its service life. In severe cases, it may even cause leakage, causing the sewage to pollute the clean water. Therefore, it is necessary to set a cleaning unit 4 inside the heat exchange unit 3 to clean the grease attached to the heat exchange unit 3.

[0061] See also Figure 1 , Figure 7 and Figure 9-11 The heat exchange unit 3 includes a water inlet tank assembly 31 connected to the filter box 11, a heat exchange chamber 32 connected to the water inlet tank assembly 31, a cleaning chamber 33 arranged at the bottom of the heat exchange chamber 32, and a floating chamber assembly 34 connected to the heat exchange chamber 32. The filtered sewage can enter the heat exchange chamber 32 for heat exchange, and the clean water that needs to be heat exchanged can enter the heat exchange chamber 32 through the water inlet tank assembly 31 for heat exchange, and then enter the floating chamber assembly 34 to complete the reflux and continue to return to the heat exchange chamber 32 and the water inlet tank assembly 31 for discharge. After the grease inside the heat exchange chamber 32 is cleaned, it can be discharged through the cleaning chamber 33.

[0062] See also Figure 1 , Figure 7 and Figure 9-11 The water inlet box assembly 31 includes a pipe box 311 set as a hollow cylindrical structure. The top of the pipe box 311 is provided with a clean water inlet 313 and the bottom is provided with a clean water outlet 314. Clean water that needs to be heat exchanged can enter the pipe box 311 from the clean water inlet 313, and the clean water after the heat exchange is completed can be discharged from the clean water outlet 314. A fixed tube sheet 312 whose shape is adapted to the shape of the heat exchange tube 325 is arranged inside the pipe box 311. The fixed tube sheet 312 is provided with a plurality of through holes, and the shape and position of each group of through holes are consistent with each group of heat exchange tubes 325. The fixed tube sheet 312 is embedded with the heat exchange bin 32, and the clean water that needs to be heat exchanged can pass through the through holes on the fixed tube sheet 312 and enter the heat exchange tube 325 for heat exchange.

[0063] See also Figure 1 , Figure 7 and Figure 9-11The top of the heat exchange bin 32 is set to be circular, and several groups of heat exchange tubes 325 are arranged inside it. Several groups of heat exchange tubes 325 are arranged around and together form a cylindrical structure that matches the shape of the heat exchange bin 32. A sewage inlet 321 is opened on the top of the heat exchange bin 32, and a sewage outlet 322 is opened at the bottom. The sewage inlet 321 is connected to the connecting pipe 14. After the sewage is filtered, it flows through the connecting pipe 14 and enters the heat exchange bin 32 from the sewage inlet 321 for heat exchange. After the heat exchange is completed, the sewage can be discharged from the sewage outlet 322. The floating tank assembly 34 includes a floating head cover 342 set to a hollow cylindrical structure and a floating tube sheet 341 whose shape matches the shape of the heat exchange tube 325. A plurality of through holes are opened on the floating tube sheet 341, and the shape and position of each group of through holes are consistent with each group of heat exchange tubes 325. The floating tube sheet 341 is engaged with the heat exchange chamber 32 , and the clean water flowing through the heat exchange tubes 325 can pass through the through holes on the floating tube sheet 341 and enter the interior of the floating head cover 342 for reflux.

[0064] See also Figure 1 , Figure 7 and Figure 9-11 A horizontal cleaning portion 323 is provided at the bottom of the heat exchange chamber 32, and an impurity discharge port 324 is provided at the cleaning portion 323 near the cleaning chamber 33. After cleaning, the grease attached to the heat exchange tube 325 can sink downward to the cleaning portion 323, and finally enter the cleaning chamber 33 through the impurity discharge port 324. The cleaning chamber 33 is configured as a semicircular structure and is provided near the floating tank assembly 34. A cleaning water outlet 331 is provided at the bottom of the cleaning chamber 33, and the grease can be discharged from the cleaning water outlet 331 after entering the cleaning chamber 33.

[0065] See also Figure 1 , Figure 7 and Figure 9-11 The cleaning unit 4 includes two sets of guide components 41 installed on the side wall of the circular part of the heat exchange chamber 32 and a cleaning component 42 sleeved on the outer wall of the heat exchange tube 325. The guide component 41 can drive the cleaning component 42 to slide along the direction of the heat exchange tube 325, thereby cleaning the grease attached to the outer wall of the heat exchange tube 325.

[0066] See also Figure 1 , Figure 7 and Figure 9-11Each set of guide components 41 includes a sliding guide rail 411 arranged along the direction of the heat exchange chamber 32, and the sliding guide rail 411 is installed on the inner wall of the heat exchange chamber 32. The sliding guide rail 411 is arranged in two groups, one group of sliding guide rails 411 is installed on the top of the heat exchange chamber 32, and the other group is installed on the lower side of the heat exchange chamber 32. Two groups of pulleys 412 are slidably connected at the bottom of each set of sliding guide rails 411, and a sliding drive 413 is installed on the side wall of one set of pulleys 412. Connectors 414 are installed at the bottom of the two sets of pulleys 412, and the side walls of the connectors 414 are connected to the cleaning components 42. The sliding drive 413 can drive the pulley 412 to slide along the direction of the sliding guide rail 411, and then synchronously drive the cleaning components 42 to slide along the heat exchange tube 325 through the connector 414.

[0067] See also Figure 1 , Figure 7 and Figure 9-11 The cleaning assembly 42 includes an upper baffle 421 disposed on the top of a plurality of groups of heat exchange tubes 325 and a lower baffle 422 disposed on the bottom of a plurality of groups of heat exchange tubes 325. The upper baffles 421 and the lower baffles 422 are arranged in multiple groups equidistantly along the direction of the heat exchange chamber 32, and are arranged at intervals therebetween. A connecting rod 424 is disposed between each group of upper baffles 421 and lower baffles 422 for connection. The upper baffles 421 and the lower baffles 422 are adapted in shape, and a plurality of groups of annular cleaning blade heads 423 are disposed on the upper baffles 421 and the lower baffles 422 at positions corresponding to the positions of the heat exchange tubes 325. When heat exchange is performed, sewage can flow through the gaps between each group of upper baffles 421 and lower baffles 422 in sequence, thereby baffle-guiding the sewage and increasing the heat exchange efficiency. When cleaning the grease, a group of upper baffles 421 and lower baffles 422 connected to the connector 414 synchronously follow the pulley 412 to slide along the direction of the sliding guide rail 411, and then drive each group of upper baffles 421 and lower baffles 422 to slide under the action of the connecting rod 424. During the sliding process of each group of upper baffles 421 and lower baffles 422 along the outer wall of the heat exchange tube 325, the annular cleaning blade 423 thereon can clean the grease attached to the outer wall of the heat exchange tube 325, which can not only effectively prevent the accumulation of grease and reduce the heat exchange efficiency, but also prevent the alkaline flushing and cleaning of grease from corroding the heat exchange tube 325, reducing the service life of the heat exchange tube 325, and causing sewage leakage to pollute the clean water.

[0068] For example 3, please refer to Figure 7-8 and Figure 12-13 The third embodiment is improved on the basis of the second embodiment as follows: although the grease attached to the outer wall of the heat exchange tube 325 can be cleaned by the cooperation of the guide assembly 41 and the cleaning assembly 42, the cleaned grease will settle to the cleaning part 323 at the bottom of the heat exchange chamber 32, which is inconvenient to discharge. Therefore, it is necessary to set a cleaning unit 5 to scrape the cleaned grease and make it enter the cleaning chamber 33 for discharge.

[0069] See also Figure 7-8 and Figure 12-13 The cleaning unit 5 includes a scraping assembly 51 installed on the cleaning part 323 and a cleaning bin door assembly 52 installed on the top of the impurity discharge port 324. The cleaning bin door assembly 52 slides to keep the impurity discharge port 324 open. The scraping assembly 51 can scrape the grease that has settled to the cleaning part 323 to the impurity discharge port 324, so that the grease enters the cleaning bin 33 from the impurity discharge port 324 for discharge.

[0070] See also Figure 7-8 and Figure 12-13 The scraping assembly 51 includes symmetrically arranged scraping rails 512, which are arranged along the direction of the cleaning part 323, and the end of the scraping rails 512 away from the cleaning bin 33 is connected to a scraping drive 511. A set of scraping sliders 513 are slidably mounted on the top of each set of scraping rails 512, and a scraper 514 is arranged between the two sets of scraping sliders 513, and the bottom of the scraper 514 abuts against the top of the cleaning part 323. The scraping drive 511 can drive the scraping sliders 513 to slide along the scraping rails 512, and synchronously drive the scraper 514 to move, so as to scrape the grease deposited on the cleaning part 323 to the impurity discharge port 324.

[0071] See also Figure 7-8 and Figure 12-13 The cleaning bin door assembly 52 includes a sliding bar 521 disposed at one end of the cleaning portion 323 close to the floating box assembly 34, and the sliding bar 521 is disposed along the width direction of the cleaning portion 323. Multiple sets of sliding members 523 are slidably mounted inside the sliding bar 521, and the multiple sets of sliding members 523 are all connected to the pulley 522, and the sliding member 523 is connected to the cleaning door 524. The pulley 522 can drive the multiple sets of sliding members 523 to slide synchronously along the direction of the sliding bar 521, thereby synchronously driving the cleaning door 524 to move, thereby realizing the opening and closing of the impurity discharge port 324.

[0072] The cleaning door 524 is moved to open and close the impurity discharge port 324, and the scraper 514 is slid to scrape the grease deposited on the cleaning portion 323 to the impurity discharge port 324, so that the grease can enter the cleaning bin 33 from the impurity discharge port 324 and finally be discharged from the cleaning outlet 331. The change of the opening and closing state of the impurity discharge port 324 can not only ensure that the normal mechanical energy of the heat exchange is not affected, but also facilitate the grease deposited on the cleaning portion 323 to enter the cleaning bin 33 from the impurity discharge port 324 and be discharged.

[0073] Embodiment 4, a heat exchange method for urban sewage treatment, according to the above-mentioned heat exchange equipment for urban sewage treatment, comprises the following steps:

[0074] S1. Before heat exchange, the refueling cabin door assembly 25 is kept closed, the cleaning cabin door assembly 52 is kept closed, and the sewage enters the filter cabin 111 for filtration;

[0075] S11, before heat exchange, the two sets of sliding doors 255 remain in a closed state, and the cleaning door 524 remains in a closed state covering the impurity discharge port 324;

[0076] S12, sewage enters the filter chamber 111 from the water inlet 12, is filtered by multiple groups of filter plates 15, and is discharged from the water outlet 13;

[0077] S2, the sewage is filtered and enters the heat exchange chamber 32, while the clean water passes through the water inlet tank assembly 31 and enters the heat exchange tube 325 for heat exchange;

[0078] S21, the sewage discharged from the outlet 13 flows through the connecting pipe 14 and then enters the interior of the heat exchange chamber 32 through the sewage inlet 321 at the top of the heat exchange chamber 32, and contacts with the outer wall of the heat exchange tube 325 for heat exchange;

[0079] S22, when the sewage circulates inside the heat exchange chamber 32, the clean water enters the tube box 311 through the clean water inlet 313, and finally passes through the fixed tube sheet 312 and enters the plurality of groups of heat exchange tubes 325 for circulation;

[0080] S23, after the clean water enters the heat exchange tube 325, it continues to pass through the floating tube sheet 341 and enters the floating head cover 342, circulates inside the floating head cover 342, and then returns to the heat exchange tube 325, and finally returns to the tube box 311 and is discharged through the clean water outlet 314;

[0081] S24, after the sewage completes heat exchange with the heat exchange tube 325, it is discharged through the sewage outlet 322 at the bottom of the heat exchange chamber 32;

[0082] S3, after the heat exchange is completed, the material exchange door assembly 25 is opened, and the adjustment assembly 23 slides to drive the material taking assembly 24 to clamp the filter plate 15;

[0083] S31, after the heat exchange is completed, the sliding frames 254 on the top of the two sets of sliding doors 255 slide along the upper slide rail 252, and synchronously drive the sliding doors 255 to slide along the upper slide rail 252 and the lower slide rail 253, so that the two sets of sliding doors 255 remain in an open state;

[0084] S32, the vertical slide rail 233 slides relative to the horizontal slide rail 232, and the material taking assembly 24 slides relative to the vertical slide rail 233, and finally the two sets of clamping claws 243 are in contact with the filter plate 15;

[0085] S33, after the two groups of clamping claws 243 come into contact with the filter plate 15, the filter plate 15 is clamped from the side wall of the filter plate 15;

[0086] S4, after the material taking component 24 transfers the filter plate 15 from the inside of the filter bin 111 to the inside of the material changing bin 112, the filter plate 15 is turned and placed on the material storage plate 21;

[0087] S41, after the two groups of clamping claws 243 clamp the filter plate 15, the vertical slide rail 233 continues to slide relative to the horizontal slide rail 232, and simultaneously drives the filter plate 15 to slide along the guide groove 16, so as to transfer the filter plate 15 from the inside of the filter bin 111 to the inside of the material replacement bin 112;

[0088] S42, the rotating head 242 drives the clamping claw 243 to rotate, and synchronously drives the filter plate 15 to flip. After the filter plate 15 is flipped, the material taking assembly 24 continues to slide relative to the vertical slide rail 233, so as to place the filter plate 15 on the material storage plate 21;

[0089] S43, continue to repeat the above operation, transfer multiple groups of filter plates 15 from the inside of the filter bin 111 to the inside of the material exchange bin 112, and stack them on the material storage plate 21;

[0090] S5, the material change hatch assembly 25 is closed, and the filter plate 15 placed on the material storage plate 21 is replaced;

[0091] S51, after the filter plates 15 are stacked, the sliding frames 254 on the top of the two sets of sliding doors 255 slide along the upper slide rail 252, and synchronously drive the sliding doors 255 to slide along the upper slide rail 252 and the lower slide rail 253, so that the two sets of sliding doors 255 remain in a closed state;

[0092] S52, opening the material taking door 22, taking out the filter plate 15 to be replaced from the material storage plate 21, and then placing a new filter plate 15 on the material storage plate 21;

[0093] S6. After the heat exchange is completed, the upper baffle plate 421 and the lower baffle plate 422 are driven by the two sets of guide components 41 to slide along the heat exchange tube 325 to clean the grease attached to the outer wall of the heat exchange tube 325;

[0094] S61, after the heat exchange is completed, the pulley 412 inside a group of guide components 41 connected to the upper baffle plate 421 slides along the direction of the sliding guide rail 411, synchronously driving a group of upper baffle plates 421 connected to the connecting member 414 to slide along the outer wall of the heat exchange tube 325, and further synchronously driving multiple groups of upper baffle plates 421 to slide along the outer wall of the heat exchange tube 325 through the connection of the connecting rod 424;

[0095] S62, a pulley 412 inside a group of guide assemblies 41 connected to the lower baffle plate 422 slides along the direction of the sliding guide rail 411, synchronously driving a group of lower baffle plates 422 connected to the connecting member 414 to slide along the outer wall of the heat exchange tube 325, and further synchronously driving multiple groups of lower baffle plates 422 to slide along the outer wall of the heat exchange tube 325 through the connection of the connecting rod 424;

[0096] S63, when the multiple groups of upper baffles 421 and lower baffles 422 slide along the outer wall of the heat exchange tube 325, the annular cleaning blades 423 on the upper baffles 421 and the lower baffles 422 simultaneously clean the grease attached to the outer wall of the heat exchange tube 325;

[0097] S7, after the grease settles down to the top of the cleaning part 323, the cleaning chamber door assembly 52 is opened, and the scraper 514 slides along the scraping rail 512 to scrape the grease on the cleaning part 323 to the impurity discharge port 324;

[0098] S71, the grease scraped off by the annular cleaning blade 423 sinks downward to the top of the cleaning portion 323;

[0099] S72, driving the sliding member 523 to slide along the direction of the sliding bar 521 through the pulley 522, and synchronously driving the cleaning door 524 to slide, and opening the impurity discharge port 324 at the bottom of the cleaning door 524;

[0100] S73, the scraping driving device 511 drives the scraping slider 513 to slide along the scraping rail 512, and simultaneously drives the scraper 514 to move from the top of the cleaning portion 323 away from the cleaning chamber 33 to the side close to the cleaning chamber 33, so as to scrape off the grease docked on the cleaning portion 323;

[0101] S74, after the scraper 514 moves to the side close to the cleaning bin 33, the grease is transferred to the impurity discharge port 324;

[0102] S8, the grease enters the cleaning chamber 33 through the impurity discharge port 324, and is finally discharged from the cleaning chamber 33, completing the cleaning;

[0103] S81, part of the grease cleaned by the scraper 514 directly enters the cleaning bin 33 through the impurity discharge port 324, and the grease that does not enter the cleaning bin 33 can enter the cleaning bin 33 driven by hot water through the sewage inlet 321;

[0104] S82, the grease and hot water entering the cleaning chamber 33 are finally discharged through the cleaning water outlet 331.

[0105] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. Heat exchange equipment for urban sewage treatment, characterized by: The filter unit (1) comprises a filter box (11) arranged horizontally, the filter box (11) being divided into a filter bin (111) and a material replacement bin (112), and a plurality of groups of filter plates (15) being arranged at equal intervals inside the filter box (11); A material changing unit (2), the material changing unit (2) comprising a material storage plate (21) installed inside a material changing bin (112), an adjustment component (23), and a material changing hatch component (25) arranged between the filter bin (111) and the material changing bin (112), the material storage plate (21) being installed in the middle of the material changing bin (112), and a material taking component (24) capable of clamping the filter plate (15) being installed on a side of the adjustment component (23) close to the filter bin (111); A heat exchange unit (3), the heat exchange unit (3) comprising a water inlet box assembly (31) connected to a filter box (11), a heat exchange bin (32) connected to the water inlet box assembly (31), a cleaning bin (33) arranged at the bottom of the heat exchange bin (32), and a floating bin assembly (34) connected to the heat exchange bin (32); the top of the heat exchange bin (32) is arranged in a circular shape and a plurality of groups of heat exchange tubes (325) are arranged inside the top of the heat exchange bin (32); a horizontal cleaning portion (323) is arranged at the bottom of the heat exchange bin (32); and an impurity discharge port (324) is provided on a side of the cleaning portion (323) close to the cleaning bin (33); A cleaning unit (4), the cleaning unit (4) comprising two groups of guide assemblies (41) mounted on the side wall of the circular portion of the heat exchange chamber (32) and a cleaning assembly (42) sleeved on the outer side wall of the heat exchange tube (325), the cleaning assembly (42) comprising an upper baffle (421) arranged on the top of a plurality of groups of heat exchange tubes (325) and a lower baffle (422) arranged on the bottom of a plurality of groups of heat exchange tubes (325); A cleaning unit (5), the cleaning unit (5) comprising a scraping assembly (51) mounted on the cleaning portion (323) and a cleaning bin door assembly (52) mounted on the top of the impurity discharge port (324), the scraping assembly (51) comprising symmetrically arranged scraping rails (512) and a scraper (514) slidably mounted on the scraping rails (512); The material exchange bin (112) is provided with a material taking door (22); the adjustment assembly (23) comprises a horizontal slide rail (232) arranged in a horizontal direction and a vertical slide rail (233) arranged in a vertical direction; the material taking assembly (24) comprises symmetrically arranged clamping claws (243) and a rotating head (242) mounted on the clamping claws (243); By sliding the vertical slide rail (233) relative to the horizontal slide rail (232), the material taking assembly (24) can slide relative to the vertical slide rail (233), thereby synchronously driving the clamping claw (243) to move, thereby transferring the filter plate (15) from the inside of the filter bin (111) to the material storage plate (21) inside the material replacement bin (112), thereby completing the replacement of the filter plate (15); The refueling cabin door assembly (25) comprises a refueling rack (251) arranged between the filter bin (111) and the refueling bin (112); the shape of the refueling rack (251) is adapted to the internal shapes of the filter bin (111) and the refueling bin (112) so as to separate the filter bin (111) and the refueling bin (112); an upper slide rail (252) and a lower slide rail (253) are arranged on a side of the refueling rack (251) close to the refueling bin (112); the upper slide rail (252) and the lower slide rail (253) are arranged in a horizontal direction, and two sets of sliding doors (255) are slidably installed between the upper slide rail (252) and the lower slide rail (253); During filtering, the refueling door assembly (25) is closed to ensure that filtering is carried out normally; when replacing the filter plate (15), the refueling door assembly 25 is opened to replace it; the opening and closing of the refueling door assembly (25) can separate the filter chamber (111) and the refueling chamber (112) while ensuring that filtering is completed normally, thereby preventing acidic and alkaline hot steam from overflowing when replacing the filter plate (15).

2. The heat exchange equipment for urban sewage treatment according to claim 1, characterized in that: Two groups of guide grooves (16) having a shape matching that of the filter plate (15) are symmetrically arranged at the top and bottom of the filter chamber (111) at positions corresponding to the positions of the filter plate (15); a water outlet (13) is provided on a side of the filter chamber (111) close to the heat exchange unit (3), and a water inlet (12) is provided on a side away from the heat exchange unit (3); and a connecting pipe (14) is connected to the water outlet (13).

3. The heat exchange equipment for urban sewage treatment according to claim 1, characterized in that: The water inlet box assembly (31) comprises a pipe box (311) having a hollow cylindrical structure, a clean water inlet (313) being provided at the top of the pipe box (311) and a clean water outlet (314) being provided at the bottom, and a fixed tube sheet (312) having a shape matching that of the heat exchange tube (325) being provided inside the pipe box (311); The floating tank assembly (34) comprises a floating head cover (342) configured as a hollow cylindrical structure and a floating tube sheet (341) having a shape adapted to the shape of the heat exchange tube (325).

4. The heat exchange equipment for urban sewage treatment according to claim 3, characterized in that: The heat exchange chamber (32) is provided with a sewage inlet (321) at the top and a sewage outlet (322) at the bottom. The cleaning chamber (33) is provided with a semicircular structure and is arranged on a side close to the floating tank assembly (34). The cleaning chamber (33) is provided with a cleaning outlet (331) at the bottom.

5. The heat exchange equipment for urban sewage treatment according to claim 1, characterized in that: Each group of the guide assemblies (41) comprises a sliding guide rail (411) arranged along the direction of the heat exchange chamber (32), a connecting member (414) being slidably mounted on the bottom of the sliding guide rail (411) via a pulley (412), and a side wall of the connecting member (414) being connected to the cleaning assembly (42).

6. The heat exchange equipment for urban sewage treatment according to claim 1, characterized in that: The upper baffle plates (421) and the lower baffle plates (422) are arranged in multiple groups at equal distances along the direction of the heat exchange chamber (32) and are arranged at intervals therebetween; a connecting rod (424) is arranged between each group of upper baffle plates (421) and lower baffle plates (422) for connection; the upper baffle plates (421) and the lower baffle plates (422) are adapted in shape and are provided with multiple groups of annular cleaning blade heads (423) at positions corresponding to the positions of the heat exchange tubes (325).

7. The heat exchange equipment for urban sewage treatment according to claim 6, characterized in that: The scraping slide rails (512) are arranged along the direction of the cleaning portion (323), and the tops of the scraping slide rails (512) are slidably mounted with scraping sliders (513); a scraper (514) is arranged between the two groups of scraping sliders (513); and the bottom of the scraper (514) abuts against the top of the cleaning portion (323); The cleaning bin door assembly (52) comprises a sliding bar (521) arranged at one end of the cleaning portion (323) close to the floating box assembly (34), wherein a plurality of groups of sliding members (523) are slidably mounted inside the sliding bar (521), and the cleaning door (524) is connected inside the sliding members (523).

8. A heat exchange method for urban sewage treatment, using the heat exchange device for urban sewage treatment according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Before heat exchange, the refueling cabin door assembly (25) remains closed, the cleaning cabin door assembly (52) remains closed, and sewage enters the filtering cabin (111) for filtration; S2, after being filtered, the sewage enters the heat exchange chamber (32), while the clean water passes through the water inlet tank assembly (31) and enters the heat exchange tube (325) for heat exchange; S3, after the heat exchange is completed, the material exchange hatch assembly (25) is opened, and the adjustment assembly (23) slides to drive the material taking assembly (24) to clamp the filter plate (15); S4, after the material taking component (24) transfers the filter plate (15) from the inside of the filter bin (111) to the inside of the material changing bin (112), the filter plate (15) is turned around and placed on the material storage plate (21); S5, the refueling door assembly (25) is closed, and the filter plate (15) woven on the storage plate (21) is replaced; S6. After the heat exchange is completed, the upper baffle plate (421) and the lower baffle plate (422) are driven by the two sets of guide components (41) to slide along the heat exchange tube (325) to clean the grease attached to the outer wall of the heat exchange tube (325); S7, after the grease sinks downward to the top of the cleaning portion (323), the cleaning chamber door assembly (52) is opened, and the scraper (514) slides along the scraping rail (512) to scrape the grease on the cleaning portion (323) to the impurity discharge port (324); S8. The grease enters the interior of the cleaning chamber (33) through the impurity discharge port (324) and is finally discharged from the interior of the cleaning chamber (33), completing the cleaning.

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