A heat energy recovery device for heating water

Abstract

The utility model discloses a kind of heating water heat recovery devices, including device body, the right side of the device body is close to lower fixed setting first inlet pipe, the left side of the device body is close to upper fixed setting first outlet pipe, the right side of the first inlet pipe is fixedly connected with filter tube, the right side of the filter tube is fixedly connected with electric valve main body, the front right side and the rear left side of the filter tube are fixedly connected with branch pipe, the branch pipe is opened with through opening and accommodating cavity, the inner end side of the accommodating cavity is connected with filter tube through through opening and is communicated, the outer ring of the branch pipe is fixedly penetrated and is provided with connecting disc body, by the larger adsorption and filtration of pipeline rust slag etc. in heating water through the magnetic filter screen cylinder set, further filter sand etc. smaller impurities in heating water are filtered again through fine filter screen cylinder, reduce the influence to heat exchange pipe, connecting frame is driven to rotate by motor and transmission shaft, to drive cleaning brush frame to rotate, cleaning brush frame can be cleaned to filter screen cylinder inner wall.

Description

Technical Field

[0001] This utility model relates to the field of heating water heat energy recovery technology, specifically a heating water heat energy recovery device. Background Technology

[0002] A heating water heat recovery device is a device used to recover waste heat energy in a heating system. It aims to improve energy efficiency, reduce operating costs, and minimize environmental impact. It transfers the waste heat in the discharged heating return water to cold water or fresh air through a heat exchanger to achieve heat recovery. However, heating water contains particulate matter (such as pipe rust and silt), which can easily clog the flow channels, reduce flow rate, and cause wear on the heat exchange tubes, affecting their service life. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] In view of the problems existing in the above and / or existing heating water heat recovery devices, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a heat recovery device for heating water, which uses a magnetic filter to adsorb and filter larger impurities such as pipe rust in the heating water, and a fine filter to further filter smaller impurities such as mud and sand in the heating water, thereby reducing the impact on subsequent heat exchange tubes.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A heat recovery device for heating water includes a device body. A first inlet pipe is fixedly installed on the lower right side of the device body, and a first outlet pipe is fixedly installed on the upper left side of the device body. A filter pipe is fixedly connected to the right side of the first inlet pipe, and an electric valve body is fixedly connected to the right side of the filter pipe. Branch pipes are fixedly connected to the front right side and the rear left side of the filter pipe. Each branch pipe has an opening and a receiving cavity. The inner end of the receiving cavity is connected to the filter pipe through the opening. A connecting disc is fixedly installed through the outer ring of the branch pipe. A sealing disc is installed on the outer side of the connecting disc. A bolt is installed through a through hole in the sealing disc. The inner end of the bolt is threaded through the through hole in the connecting disc and connected to a nut. A magnetic filter screen is fixedly installed on the inner end face of the sealing disc on the front right side, and a fine filter screen is fixedly installed on the inner end face of the sealing disc on the rear left side.

[0007] In a preferred embodiment of the heating water heat recovery device of this utility model, heat exchange tubes are fixedly installed through the top and bottom of the device body, and connecting shells are fixedly connected to the upper and lower ends of the device body, respectively. The upper and lower ends of the heat exchange tubes are respectively connected to the upper and lower connecting shells.

[0008] In a preferred embodiment of the heat recovery device for heating water described in this utility model, a second inlet pipe is fixedly connected to the upper end of the upper connecting shell, and a second outlet pipe is fixedly connected to the lower end of the lower connecting shell.

[0009] In a preferred embodiment of the heating water heat recovery device described in this utility model, the branch pipe on the front right side is connected to the filter pipe through a first connecting pipe, and the branch pipe on the rear left side is connected to the filter pipe through a second connecting pipe.

[0010] In a preferred embodiment of the heat recovery device for heating water described in this utility model, a drive shaft is rotatably connected through the inner end face of the sealed disc, the outer end of the drive shaft is connected to the output shaft of the motor, a connecting frame is fixedly provided on the outer ring side of the drive shaft, and a cleaning brush holder is fixedly connected to the outer end of the connecting frame.

[0011] In a preferred embodiment of the heating water heat recovery device described in this utility model, both the magnetic filter cylinder and the fine filter cylinder are fixedly connected to a connector at one end near the inlet, and the end face of the connector is provided with a mounting groove.

[0012] In a preferred embodiment of the heating water heat recovery device of this utility model, a backflushing pipe is connected to the upper end of the electric valve body, a first backflushing pipe is fixedly connected to the upper end of the backflushing pipe, the end of the first backflushing pipe away from the backflushing pipe is connected to the front right branch pipe, an electric valve is provided on the first backflushing pipe, a second backflushing pipe is fixedly connected to the first backflushing pipe, and the end of the second backflushing pipe away from the first backflushing pipe is connected to the rear left branch pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the magnetic filter cylinder adsorbs and filters larger impurities such as rust and slag in the heating water, while the fine filter cylinder further filters smaller impurities such as silt and sand in the heating water, reducing the impact on the subsequent heat exchange tubes. The motor and drive shaft drive the connecting frame to rotate, thereby driving the cleaning brush frame to rotate. The cleaning brush frame can clean the inner wall of the filter cylinder. At the same time, the electric valve body is closed and the electric valve is opened, allowing the heating water to enter the first backwash pipe through the backwash pipe and the second backwash pipe through the first backwash pipe, thereby backwashing the magnetic filter cylinder and the fine filter cylinder, further improving the cleaning effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the device body of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the branch pipe of this utility model; Figure 4 This is a schematic diagram of the drive shaft, motor, connecting frame, and cleaning brush holder of this utility model; Figure 5 This is a schematic diagram of the magnetic filter cylinder and fine filter cylinder of this utility model; Figure 6 This is a schematic diagram of the fine filter screen cylinder, connector, and mounting groove of this utility model.

[0015] In the diagram: 1. Device body; 2. First inlet pipe; 3. First outlet pipe; 4. Heat exchanger tube; 5. Connecting shell; 6. Second inlet pipe; 7. Second outlet pipe; 8. Filter pipe; 9. Electric valve body; 10. Branch pipe; 11. Port; 12. First pipe; 13. Second pipe; 14. Connecting disc; 15. Sealing disc; 16. Bolt; 17. Nut; 18. Drive shaft; 19. Motor; 20. Connecting frame; 21. Cleaning brush holder; 22. Magnetic filter cylinder; 23. Fine filter cylinder; 24. Connector; 25. Mounting slot; 26. Backwash pipe; 27. First backwash pipe; 28. Second backwash pipe; 29. ​​Electric valve; 30. Receiving cavity. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0019] This utility model provides a heat recovery device for heating water. It uses a magnetic filter to adsorb and filter larger impurities such as pipe rust in the heating water, and a fine filter to further filter smaller impurities such as silt in the heating water, thereby reducing the impact on the subsequent heat exchange tubes.

[0020] Figures 1-6 The diagram shown is an overall structural schematic of one embodiment of the heat recovery device for heating water according to this utility model. Please refer to [link / reference]. Figures 1-6 This embodiment of a heating water heat recovery device includes a device body 1. A first inlet pipe 2 is fixedly installed on the lower right side of the device body 1, and a first outlet pipe 3 is fixedly installed on the upper left side of the device body 1. A filter pipe 8 is fixedly connected to the right side of the first inlet pipe 2, and an electric valve body 9 is fixedly connected to the right side of the filter pipe 8. Branch pipes 10 are fixedly connected to the front right side and the rear left side of the filter pipe 8. A through port 11 and a receiving cavity 30 are opened in the branch pipe 10. The inner end of the receiving cavity 30 is connected to the filter pipe 8 through the through port 11. A connecting disc body 14 is fixedly installed through the outer ring of the branch pipe 10. A sealing disc body 15 is provided on the outer side of the connecting disc body 14. A bolt 16 is installed through a through hole opened on the sealing disc body 15. The inner end of the bolt 16 is threaded through the through hole opened on the connecting disc body 14 and connected to a nut 17. A magnetic filter screen cylinder 22 is fixedly installed on the inner end face of the sealing disc body 15 on the front right side, and a fine filter screen cylinder 23 is fixedly installed on the inner end face of the sealing disc body 15 on the rear left side.

[0021] The first outlet pipe 3 and the filter pipe 8, as well as the filter pipe 8 and the electric valve body 9, are all connected and fixed by external bolts and external nuts, and the connection is sealed. The connection between the sealing disc 15 and the connecting disc 14 is also sealed. By removing the bolts 16 and nuts 17, the corresponding filter screen cylinder and cleaning brush holder 21 can be pulled out for cleaning and maintenance through the sealing disc 15. The magnetic filter screen cylinder 22 or fine filter screen cylinder 23 is installed on the sealing disc 15 by the fixing ear plate under the action of the bolt fasteners, which is convenient for disassembly. Differential pressure sensors are installed at the inlet and outlet of the corresponding filter screen cylinder. The differential pressure sensors monitor the water pressure change to determine whether the filter is blocked and perform cleaning and backwashing treatment. The system is controlled by a controller, model Honeywel1T775R2000, and the differential pressure sensor model Endress+HauserPMD75 (0~1.6bar).

[0022] A heat exchange tube 4 is fixedly installed through the top and bottom of the device body 1. A connecting shell 5 is fixedly connected to the top and bottom of the device body 1. The top and bottom ends of the heat exchange tube 4 are respectively connected to the upper and lower connecting shells 5. A second inlet pipe 6 is fixedly connected to the upper end of the upper connecting shell 5, and a second outlet pipe 7 is fixedly connected to the lower end of the lower connecting shell 5.

[0023] The second inlet pipe 6 is connected to the cold water inlet pipe, and the second outlet pipe 7 is connected to the cold water outlet pipe after heat exchange. The cold water enters the upper connecting shell 5 through the second inlet pipe 6, enters the heat exchange pipe 4 through the connecting shell 5, exchanges heat with the heating water in the device body 1, and is discharged into the lower connecting shell 5. Then it is discharged from the lower connecting shell 5 through the second outlet pipe 7. A seal is provided at the penetration point between the heat exchange pipe 4 and the device body 1.

[0024] The front right branch pipe 10 is connected to the filter pipe 8 through the first connecting pipe 12, and the rear left branch pipe 10 is connected to the filter pipe 8 through the second connecting pipe 13.

[0025] The first drain outlet is located below the filter pipe 8 along the direction of the branch pipe 10 on the front right side. The second drain outlet is located below the filter pipe 8 along the direction of the branch pipe 10 on the rear left side. Depending on the situation, a valve body can be installed between the filter pipe 8 and the first inlet pipe 2 to close the connection between the filter pipe 8 and the first inlet pipe 2 during backwashing.

[0026] A drive shaft 18 is rotatably connected through the inner end face of the sealing disc 15. The outer end of the drive shaft 18 is connected to the output shaft of the motor 19. A connecting frame 20 is fixedly installed on the outer ring side of the drive shaft 18. A cleaning brush holder 21 is fixedly connected to the outer end of the connecting frame 20.

[0027] The motor 19 drives the cleaning brush holder 21 to rotate through the transmission shaft 18 and the connecting frame 20 to clean the inside of the filter cylinder. There are two cleaning brush holders 21, located inside the magnetic filter cylinder 22 and the fine filter cylinder 23 respectively.

[0028] Both the magnetic filter cylinder 22 and the fine filter cylinder 23 are fixedly connected to a connector 24 at one end near the port 11, and the end face of the connector 24 is provided with a mounting groove 25.

[0029] A sealing ring is installed inside the placement groove 25 to enhance the seal between the joint 24 near the opening 11 and the inner wall of the receiving cavity 30.

[0030] A backwash pipe 26 is connected to the upper end of the electric valve body 9. A first backwash pipe 27 is fixedly connected to the upper end of the backwash pipe 26. The end of the first backwash pipe 27 away from the backwash pipe 26 is connected to the branch pipe 10 on the front right side. An electric valve 29 is installed on the first backwash pipe 27. A second backwash pipe 28 is fixedly connected to the first backwash pipe 27. The end of the second backwash pipe 28 away from the first backwash pipe 27 is connected to the branch pipe 10 on the rear left side.

[0031] Close the electric valve body 9 and open the electric valve 29, so that the heating water flows through the first backwash pipe 27 to backwash and clean the magnetic filter cylinder 22 in the front right branch pipe 10. The heating water then flows through the first backwash pipe 27 into the second backwash pipe 28 to backwash the fine filter cylinder 23 in the rear left branch pipe 10.

[0032] Combination Figures 1-6 The specific operation of a heating water heat recovery device according to this embodiment is as follows: Cold water enters the upper connecting housing 5 through the second inlet pipe 6, and after exchanging heat with the heating water in the device body 1 through the heat exchange pipe 4, it is discharged into the lower connecting housing 5, and then discharged through the lower connecting housing 5 through the second outlet pipe 7. The heating water enters the filter pipe 8 through the electric valve body 9, and is initially filtered by the magnetic filter cylinder 22 in the front right branch pipe 10, and then enters the filter pipe 8 through the first pipe 12, and is filtered again by the fine filter cylinder 23 in the rear left branch pipe 10 before passing through the first inlet pipe. After heat exchange, pipe 2 enters the device body 1 and is discharged through the first outlet pipe 3. The first outlet pipe 3 and the electric valve body 9 are respectively connected to the heating water output pipe and the heating water input pipe. During cleaning, the motor 19 drives the cleaning brush holder 21 to rotate through the transmission shaft 18 and the connecting frame 20 to clean the inside of the corresponding filter cylinder. The electric valve body 9 is closed and the electric valve 29 is opened, so that the heating water backwashes and cleans the magnetic filter cylinder 22 in the front right branch pipe 10 through the first backwash pipe 27. The heating water enters the second backwash pipe 28 through the first backwash pipe 27 to backwash the fine filter cylinder 23 in the rear left branch pipe 10.

[0033] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat recovery device for heating water, comprising a device body (1), characterized in that: A first inlet pipe (2) is fixedly installed on the right side near the bottom of the device body (1), and a first outlet pipe (3) is fixedly installed on the left side near the top of the device body (1). A filter pipe (8) is fixedly connected to the right side of the first inlet pipe (2), and an electric valve body (9) is fixedly connected to the right side of the filter pipe (8). A branch pipe (10) is fixedly connected to both the front right side and the rear left side of the filter pipe (8). A through-hole (11) and a receiving cavity (30) are opened in the branch pipe (10). The inner end of the receiving cavity (30) is connected to the filter pipe through the through-hole (11). The pipes (8) are connected. A connecting disc (14) is fixedly installed on the outer ring of the branch pipe (10). A sealing disc (15) is installed on the outer side of the connecting disc (14). A bolt (16) is installed through the through hole on the sealing disc (15). The inner end of the bolt (16) is threaded through the through hole on the connecting disc (14) and connected to a nut (17). A magnetic filter cylinder (22) is fixedly installed on the inner end face of the sealing disc (15) on the front right side. A fine filter cylinder (23) is fixedly installed on the inner end face of the sealing disc (15) on the rear left side.

2. The heat recovery device for heating water according to claim 1, characterized in that: A heat exchange tube (4) is fixedly installed through the top and bottom of the device body (1). A connecting shell (5) is fixedly connected to the upper and lower ends of the device body (1). The upper and lower ends of the heat exchange tube (4) are respectively connected to the connecting shell (5) above and below.

3. The heat recovery device for heating water according to claim 2, characterized in that: The upper end of the upper connecting housing (5) is fixedly connected to a second inlet pipe (6), and the lower end of the lower connecting housing (5) is fixedly connected to a second outlet pipe (7).

4. The heat recovery device for heating water according to claim 1, characterized in that: The branch pipe (10) on the front right side is connected to the filter pipe (8) through the first connector (12), and the branch pipe (10) on the rear left side is connected to the filter pipe (8) through the second connector (13).

5. A heat recovery device for heating water according to claim 1, characterized in that: The inner end face of the sealing disc (15) is rotatably connected to a drive shaft (18). The outer end of the drive shaft (18) is connected to the output shaft of the motor (19). A connecting frame (20) is fixedly provided on the outer ring side of the drive shaft (18). A cleaning brush holder (21) is fixedly connected to the outer end of the connecting frame (20).

6. The heat recovery device for heating water according to claim 1, characterized in that: Both the magnetic filter cylinder (22) and the fine filter cylinder (23) are fixedly connected to a connector (24) at one end near the opening (11), and the end face of the connector (24) is provided with a mounting groove (25).

7. A heat recovery device for heating water according to claim 1, characterized in that: The upper end of the electric valve body (9) is connected to a backflushing pipe (26), and the upper end of the backflushing pipe (26) is fixedly connected to a first backflushing pipe (27). The end of the first backflushing pipe (27) away from the backflushing pipe (26) is connected to the branch pipe (10) on the front right side. An electric valve (29) is provided on the first backflushing pipe (27). A second backflushing pipe (28) is fixedly connected to the first backflushing pipe (27). The end of the second backflushing pipe (28) away from the first backflushing pipe (27) is connected to the branch pipe (10) on the rear left side.

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