Bath and domestic wastewater heat recycling device

Abstract

The utility model discloses a bathing and domestic wastewater heat recycling device, and relates to the technical field of wastewater resource recycling. The device comprises a waste water pipe, one end of the waste water pipe is fixedly connected with a filtering device, one end of the filtering device is fixedly connected with a water pump, one end of the water pump is fixedly connected with a heat exchange device, the heat exchange device comprises an upper guide rod, and a lower guide rod penetrates through a rear end plate and is fixedly connected with one end of a supporting column. A plurality of heat exchange plates are clamped between the front end plate and the rear end plate, a hot inlet pipe and a hot discharge pipe are fixedly connected to the inner walls of the two circular grooves in one side respectively, a cold water inlet pipe and a cold water outlet pipe are fixedly connected to the inner walls of the two circular grooves in the other side respectively, one end of the hot inlet pipe is fixedly connected with one end of a water pump, and the other end of the hot outlet pipe is fixedly connected with the other end of the water pump. By arranging the heat exchange device and the filtering device, the effects of reducing cost, converting heat energy and filtering waste water to protect the heat exchange device are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater resource recycling, in particular to a device for recycling heat from bathing and domestic wastewater. Background Art

[0002] Bathing is indispensable in people's lives. In order to meet the needs of the public, many large bathing centers have been built in cities. A large amount of domestic wastewater is generated through bathing, so people have invented many devices for recycling domestic wastewater resources. Domestic sewage heat energy is a special energy source, which is generated with the use of hot water. The use of waste heat utilization and other technologies can achieve low heat loss recycling and meet the residents' demand for hot water. It can reduce the use of electricity, natural gas and other energy sources and has promotion and use value. Its recycling and reuse has positive significance and is energy-saving and environmentally friendly. With the rise of environmental protection awareness, it is friendly to the environment and coexist with the natural environment. Water conservation has become an important consideration in national development. As traditional water resource development methods such as building reservoirs, weirs, and cross-regional water diversion are extremely difficult, in recent years, new water resources have been developed to assist traditional water resources. Wastewater recycling and reuse is part of the current development of new water resources. The recycling and reuse of domestic sewage is to treat domestic sewage through sewage treatment facilities, and then pass the discharged water through water recycling facilities, or directly enter the water recycling facilities for treatment, and then provide it to restricted living, industrial, agricultural, environmental landscape, etc. or groundwater replenishment through the water distribution system.

[0003] However, the prior art still has the following problems:

[0004] First of all, most of the wastewater generated by bathing is discharged directly through drainage pipes, which makes it impossible to achieve effective resource utilization of the wastewater. The discharged wastewater causes serious pollution to the environment, and the heat energy in the wastewater is completely wasted, which not only increases the waste of water resources, but also increases the electricity cost and labor cost generated by bathing.

[0005] Secondly, most heat recovery and reuse devices are unable to effectively filter the discharged polluted water, causing hair, dirt and other impurities in the wastewater to clog the pipes and the inside of the device, making the device unable to operate normally, reducing its conversion efficiency and requiring repeated replacement and cleaning.

[0006] In view of the above problems, the inventors proposed a device for recovering and reusing heat from bathing and domestic wastewater to solve the above problems. Utility Model Content

[0007] In order to solve the problem that waste water heat cannot be recovered and is blocked by debris, the utility model aims to provide a device for recovering and reusing the heat of bathing and domestic waste water.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: a device for heat recovery and reuse of bathing and domestic waste water, comprising a waste water pipe, one end of the waste water pipe is fixedly connected to a filter device, one end of the filter device is fixedly connected to a water pump, one end of the water pump is fixedly connected to a heat exchange device, the heat exchange device comprises an upper guide rod, the bottom end of the upper guide rod and the top end of the lower guide rod are fixedly provided with a slide rail used for matching the heat exchange plate and the rear end plate, one end of the upper guide rod is clamped with a front end plate, and the bottom side of one end of the front end plate is connected to one end of the rear end plate Two feet are provided on the bottom side, which play a role in facilitating the fixing of the heat exchange device. The other end of the upper guide rod is fixedly connected to a pillar, and the middle outer surface of the upper guide rod is clamped with a rear end plate, and the top of the rear end plate is fixedly provided with two support plates, a pulley is rotatably connected between the two support plates, and the outer surface of the pulley is slidably fitted with the top outer surface of the upper guide rod, and the lower part of the end of the front end plate facing the rear end plate is fixedly connected to a lower guide rod, and the lower guide rod plays a role in facilitating the clamping and clamping of the heat exchange plate with the upper rod, and the lower guide rod passes through the rear end plate and is clamped with one end of the pillar The front plate and the rear plate are fixedly connected, and a plurality of heat exchange plates are clamped between the front plate and the rear plate. The plurality of heat exchange plates are horizontally evenly spaced, and the through grooves between the plurality of heat exchange plates form four liquid circulation paths. The heat exchange plate includes four through grooves, and the four through grooves are distributed in a rectangular array, and the four through grooves are on the same horizontal line as the four circular grooves. A rubber pad is fixedly installed on the outer surface of one end of the heat exchange plate, and the rubber pad plays a sealing role between the plates and has a certain role in guiding the cold and hot media. The outer surface of one end of the heat exchange plate is provided with a corrugated Heat conduction groove, both ends of the heat exchange plate are provided with card grooves, both ends of the front end plate and the rear end plate are interspersed with three threaded rods, and the end of the front end plate facing away from the rear end plate is provided with four circular grooves used in conjunction with the heat exchange plate, and the four circular grooves are distributed in a rectangular array, and the inner walls of the two circular grooves on one side are respectively fixedly connected with a hot inlet pipe and a hot exhaust pipe, and the inner walls of the two circular grooves on the other side are respectively fixedly connected with a cold water inlet pipe and a cold water outlet pipe, one end of the hot inlet pipe is fixedly connected to one end of the water pump, and one end of the hot exhaust pipe is fixedly connected to a hot water outlet pipe.

[0009] Preferably, the filtering device includes a valve body, one end of the valve body is fixedly provided with a water inlet, the other end of the valve body is fixedly provided with a water outlet, the top end of the valve body is fixedly connected to a top cover, which facilitates opening the valve body to clean the filter cartridge, the inner surface of the valve body is fixedly sleeved with a filter cartridge, the outer surface of the filter cartridge slides against the inner surface of the valve body, and a sealing gasket is fixedly provided on the outer surface of the top end of the filter cartridge, which performs a sealing function to prevent water from overflowing.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model sets a heat exchange device, and the heat exchange plates between the heat exchange devices can effectively exchange the heat energy of hot and cold water. The heat energy in the discarded waste water is exchanged to the available cold water through the heat exchange device, which reduces the energy consumption caused by heating cold water and avoids the waste of heat energy, thereby achieving the effect of reducing costs and converting heat energy.

[0012] 2. The utility model sets a filtering device, in which the filter cartridge filters and stores the hair and dirt in the wastewater. The filtered sewage is converted into heat energy through the heat exchange device, thus avoiding the blockage of the pipeline and the heat exchange device, thereby achieving the effect of filtering the wastewater and protecting the heat exchange device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the heat exchange device of the utility model.

[0016] Figure 3 This is a schematic diagram of the heat exchange plate structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the filtering device of the utility model.

[0018] In the figure: 1. filtration device; 2. water pump; 3. heat exchange device; 4. waste water pipe; 5. hot outlet pipe; 6. cold inlet pipe; 7. cold outlet pipe; 30. circular groove; 31. upper guide rod; 32. front end plate; 321. hot inlet pipe; 322. hot exhaust pipe; 33. pillar; 34. rear end plate; 341. support plate; 342. pulley; 36. heat exchange plate; 37. lower guide rod; 38. threaded rod; 361. through groove; 362. rubber pad; 363. heat conduction groove; 11. valve body; 12. top cover; 13. water inlet; 14. water outlet; 15. filter cartridge; 16. sealing pad. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1: Figure 1-4 As shown, the utility model provides a device for recovering and reusing heat from waste water for bathing and life, including a waste water pipe 4, one end of which is fixedly connected to a filter device 1, one end of which is fixedly connected to a water pump 2, one end of which is fixedly connected to a heat exchange device 3, the heat exchange device 3 includes an upper guide rod 31, one end of which is clamped with a front end plate 32, the other end of which is fixedly connected to a support column 33, the middle outer surface of the upper guide rod 31 is clamped with a rear end plate 34, the lower part of one end of the front end plate 32 facing the rear end plate 34 is fixedly connected to a lower guide rod 37, the lower guide rod 37 penetrates the rear end plate 34 and is fixedly connected to one end of the support column 33 A plurality of heat exchange plates 36 are clamped between the front end plate 32 and the rear end plate 34. Three threaded rods 38 are inserted through both ends of the front end plate 32 and the rear end plate 34. Four circular grooves 30 for cooperating with the heat exchange plates 36 are provided at one end of the front end plate 32 facing away from the rear end plate 34. The four circular grooves 30 are distributed in a rectangular array. The inner walls of the two circular grooves 30 on one side are fixedly connected with a hot inlet pipe 321 and a hot exhaust pipe 322, respectively. The inner walls of the two circular grooves 30 on the other side are fixedly connected with a cold water inlet pipe 6 and a cold water outlet pipe 7, respectively. One end of the hot inlet pipe 321 is fixedly connected to one end of the water pump 2, and one end of the hot exhaust pipe 322 is fixedly connected to a hot water outlet pipe 5.

[0021] By adopting the above technical solution, the waste water with residual heat enters between the multiple heat exchange plates 36 in a straight line through the through groove 361 corresponding to the heat exchange plate 36 and flows out from the hot exhaust pipe 322 to complete the heat medium circulation. The available domestic cold water enters from the cold water inlet pipe 6, and the waste water passes through the heat conduction groove 363 between the heat exchange plates 36 and is discharged from the cold water outlet pipe 7 through the heat conduction groove 363 to complete the cold medium circulation. The two enter between the heat exchange plates 36 at the same time. The multiple heat exchange plates 36 are sealed by the rubber pads 362 and play a role in guiding the circulation of liquid between the plates. The heat conduction grooves 363 between the heat exchange plates 36 provide a path for liquid circulation and promote the turbulent effect. When the hot medium passes through the straight path corresponding to the hot inlet pipe 321 and the cold medium passes through the straight path corresponding to the cold water inlet pipe 6, the rubber pads between the heat exchange plates 36 362 forms turbulence on the water flow, and the thermal conductivity of the heat exchange plate 36 forms an exchange of cold medium and hot medium. The cold water after the exchange is heated up and discharged from the cold outlet pipe 7 to the water use point, completing the utilization of the residual heat of domestic wastewater. The wastewater after the exchange is cooled down and discharged from the hot outlet pipe 5, thereby achieving the purpose of wastewater heat recovery and reuse. The front end plate 32 and the rear end plate 34 are clamped and fixed to the heat exchange plate 36 by the threaded rods 38 at both ends. By rotating the nuts between the threaded rods 38, the rear end plate 34 is horizontally slid along the slide rails at both ends of the upper guide rod 31 and the lower guide rod 37 through the pulley 342 between the support plate 341 and the top of the upper guide rod 31, so that the heat exchange plate 36 is separated from the rear end plate 34, which can facilitate the disassembly operation of the heat exchange plate 36, and the four feet at the bottom are convenient for fixing the heat exchange device 3.

[0022] The heat exchange plate 36 includes four through grooves 361 , a rubber pad 362 is fixedly installed on the outer surface of one end of the heat exchange plate 36 , a corrugated heat conduction groove 363 is provided on the outer surface of one end of the heat exchange plate 36 , and slots are provided at both ends of the heat exchange plate 36 .

[0023] The above technical solution is adopted to facilitate the formation of a path between the four through grooves 361 for providing hot and cold water to enter the heat exchange plate 36. The heat conduction grooves 363 facilitate the formation of turbulence between the corrugated heat conduction grooves 363, and facilitate the circulation of hot and cold media between the plates.

[0024] The bottom end of the upper guide rod 31 and the top end of the lower guide rod 37 are both fixedly provided with slide rails used in conjunction with the heat exchange plate 36 and the rear end plate 34 .

[0025] By adopting the above technical solution, it is convenient to horizontally slide the heat exchange plate 36 and the rear end plate 34 through the slide rails at both ends.

[0026] Two support plates 341 are fixedly provided at the top of the rear end plate 34 , a pulley 342 is rotatably connected between the two support plates 341 , and the outer surface of the pulley 342 is slidably fitted with the outer surface of the top of the upper guide rod 31 .

[0027] By adopting the above technical solution, the friction force is reduced while the rear end plate 34 is sliding, so that the rear end plate 34 can more conveniently clamp the heat exchange plate 36 .

[0028] The four through slots 361 are distributed in a rectangular array, and the four through slots 361 and the four circular slots 30 are on the same horizontal line.

[0029] The above technical solution is adopted to facilitate hot and cold water to flow through the four through grooves 361 through the circular groove 30 .

[0030] Two footings are disposed on the bottom side of one end of the front plate 32 and the bottom side of one end of the rear plate 34 .

[0031] The purpose of adopting the above technical solution is to facilitate fixing the heat exchange device 3 through four feet.

[0032] Embodiment 2: Figure 4 As shown, the filtering device 1 includes a valve body 11, one end of the valve body 11 is fixedly provided with a water inlet 13, the other end of the valve body 11 is fixedly provided with a water outlet 14, the top end of the valve body 11 is fixedly connected with a top cover 12, the inner surface of the valve body 11 is fixedly sleeved with a filter cartridge 15, and the top outer surface of the filter cartridge 15 is fixedly provided with a sealing gasket 16. Domestic waste water enters the waste water pipe 4 through the water inlet 13 between the filtering device 1 and then reaches the inside of the valve body 11. The domestic waste water passes through the filter cartridge 15 to filter hair and other debris in the domestic waste water. The filtered waste water flows to one end of the water pump 2 through the water outlet 14. The filter cartridge 15 is taken out by opening the top cover 12 for cleaning. The sealing gasket 16 is responsible for sealing the connection between the valve body 11 and the top cover 12, thereby achieving the purpose of filtering the waste water.

[0033] By adopting the above technical solution, the structure of the entire device is made more reasonable.

[0034] The outer surface of the filter cartridge 15 is slidably fitted to the inner surface of the valve body 11 .

[0035] By adopting the above technical solution, it is convenient for the filter cartridge 15 to form a filter net between the water flows, and the debris between the water flows is filtered and stored.

[0036] Working principle: Domestic wastewater enters the wastewater pipe 4, enters the water inlet 13 between the filter device 1 and then reaches the valve body 11. The domestic wastewater passes through the filter cartridge 15 to filter the hair and other debris in the domestic wastewater. The filtered wastewater flows to one end of the water pump 2 through the water outlet 14. The filter cartridge 15 is taken out by opening the top cover 12 for cleaning. The sealing gasket 16 is responsible for sealing the connection between the valve body 11 and the top cover 12, thereby achieving the purpose of filtering the wastewater. The water pump 2 starts to discharge the wastewater into the hot inlet pipe 321, leaving the residual The hot waste water enters between the multiple heat exchange plates 36 in a straight line through the through grooves 361 corresponding to the heat exchange plates 36 and flows out from the hot exhaust pipe 322 to complete the heat medium circulation. The available domestic cold water enters from the cold water inlet pipe 6, and the waste water passes through the heat conduction grooves 363 between the heat exchange plates 36 and is discharged from the cold water outlet pipe 7 to complete the cold medium circulation. The two enter between the heat exchange plates 36 at the same time. The multiple heat exchange plates 36 are sealed by the rubber pads 362 and guide the circulation of the liquid between the plates. The heat exchange plates 36 The heat conduction groove 363 between the heat exchange plates 36 provides a path for liquid circulation and promotes turbulent flow. When the hot medium passes through the straight path corresponding to the hot inlet pipe 321 and the cold medium passes through the straight path corresponding to the cold water inlet pipe 6, the rubber pads 362 between the heat exchange plates 36 form turbulence on the water flow. The heat conductivity of the heat exchange plates 36 forms an exchange between the cold medium and the hot medium. The exchanged cold water is heated up and discharged from the cold outlet pipe 7 to the water use point, completing the utilization of the waste heat of domestic wastewater. The exchanged wastewater is cooled down and discharged from the hot outlet pipe 5. Thereby achieving the purpose of wastewater heat recovery and reuse, the front end plate 32 and the rear end plate 34 clamp and fix the heat exchange plate 36 through the threaded rods 38 at both ends, and by rotating the nuts between the threaded rods 38, the rear end plate 34 is slid horizontally along the slide rails at both ends of the upper guide rod 31 and the lower guide rod 37 through the pulley 342 between the support plate 341 and the top of the upper guide rod 31, so that the heat exchange plate 36 is separated from the rear end plate 34, which can facilitate the disassembly operation of the heat exchange plate 36, and the four feet at the bottom facilitate the fixation of the heat exchange device 3.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A device for recovering and reusing heat from wastewater from bathing and domestic use, comprising a wastewater pipe (4), characterized in that: One end of the wastewater pipe (4) is fixedly connected to a filter device (1), one end of the filter device (1) is fixedly connected to a water pump (2), and one end of the water pump (2) is fixedly connected to a heat exchange device (3); The heat exchange device (3) comprises an upper guide rod (31), one end of the upper guide rod (31) is clamped with a front end plate (32), the other end of the upper guide rod (31) is fixedly connected to a pillar (33), the middle outer surface of the upper guide rod (31) is clamped with a rear end plate (34), the lower end of the front end plate (32) facing the rear end plate (34) is fixedly connected to a lower guide rod (37), the lower guide rod (37) penetrates the rear end plate (34) and is fixedly connected to one end of the pillar (33), a plurality of heat exchange plates (36) are clamped between the front end plate (32) and the rear end plate (34), and the front end plate (32) and the rear end plate (34) are fixedly connected to each other. Three threaded rods (38) are interspersed at both ends; one end of the front plate (32) facing away from the rear plate (34) is provided with four circular grooves (30) for use with the heat exchange plate (36); the four circular grooves (30) are distributed in a rectangular array; the inner walls of the two circular grooves (30) on one side are respectively fixedly connected with a hot inlet pipe (321) and a hot outlet pipe (322); the inner walls of the two circular grooves (30) on the other side are respectively fixedly connected with a cold water inlet pipe (6) and a cold water outlet pipe (7); one end of the hot inlet pipe (321) is fixedly connected to one end of the water pump (2); and one end of the hot outlet pipe (322) is fixedly connected to a hot water outlet pipe (5).

2. A device for recovering and reusing heat from bathing and domestic wastewater as claimed in claim 1, characterized in that: The filtering device (1) comprises a valve body (11), one end of the valve body (11) is fixedly provided with a water inlet (13), the other end of the valve body (11) is fixedly provided with a water outlet (14), the top end of the valve body (11) is fixedly connected with a top cover (12), the inner surface of the valve body (11) is fixedly sleeved with a filter cartridge (15), and the top outer surface of the filter cartridge (15) is fixedly provided with a sealing gasket (16).

3. The device for recovering and reusing heat from bathing and domestic wastewater according to claim 1, characterized in that: The heat exchange plate (36) comprises four through grooves (361), a rubber pad (362) is fixedly mounted on the outer surface of one end of the heat exchange plate (36), a corrugated heat conduction groove (363) is provided on the outer surface of one end of the heat exchange plate (36), and both ends of the heat exchange plate (36) are provided with a card slot.

4. The device for recovering and reusing heat from bathing and domestic wastewater according to claim 1, characterized in that: The bottom end of the upper guide rod (31) and the top end of the lower guide rod (37) are both fixedly provided with slide rails used in conjunction with the heat exchange plate (36) and the rear end plate (34).

5. The device for recovering and reusing heat from bathing and domestic wastewater according to claim 1, characterized in that: Two support plates (341) are fixedly provided at the top end of the rear end plate (34), a pulley (342) is rotatably connected between the two support plates (341), and the outer surface of the pulley (342) is slidably fitted with the outer surface of the top end of the upper guide rod (31).

6. The device for recovering and reusing heat from bathing and domestic wastewater as claimed in claim 3, characterized in that: The four through grooves (361) are distributed in a rectangular array, and the four through grooves (361) and the four circular grooves (30) are on the same horizontal line.

7. The device for recovering and reusing heat from bathing and domestic wastewater as claimed in claim 2, characterized in that: The outer surface of the filter cartridge (15) is slidably fitted against the inner surface of the valve body (11).

8. The device for recovering and reusing heat from bathing and domestic wastewater as claimed in claim 3, characterized in that: The plurality of heat exchange plates (36) are horizontally distributed at equal intervals, and the through grooves (361) between the plurality of heat exchange plates (36) form four liquid circulation paths.

9. The device for recovering and reusing heat from bathing and domestic wastewater according to claim 1, characterized in that: Two footings are provided on the bottom side of one end of the front plate (32) and the bottom side of one end of the rear plate (34).

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