Pollution discharge device of plate heat exchanger

Abstract

The invention relates to the technical field of heat exchangers, in particular to a plate heat exchanger blowdown device which comprises a machine box and further comprises a blowdown assembly, the blowdown assembly comprises a shell, a pipe plug and a connecting rod, one side of the shell is provided with a second blowdown water opening in a communicating mode, a through hole is formed in the adjacent side of the shell, and the other adjacent side of the shell is detachably connected with a rear cover. The case is connected with an internal thread of a through hole in the shell in a meshed mode through an external thread of the first sewage discharge port, 360-degree threaded rotation is supported, multi-direction sewage discharge adjustment can be supported, the heat exchanger is suitable for different installation positions, different layout requirements are further met, efficient sewage discharge is achieved, the rear cover can be rapidly disassembled and assembled, and the heat exchanger is convenient to use. According to the sewage discharging device, the first sewage discharging port can be connected with the shell, so that the interior of the shell can be conveniently cleaned, the modularized sewage discharging assembly can be rapidly disassembled and assembled, maintenance or replacement is convenient, the second sewage discharging port can be connected with a flexible corrugated pipe through a hoop, and the sewage discharging path can be flexibly adjusted and vibration transmission can be reduced through the flexible corrugated pipe.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more particularly to a wastewater discharge device for plate heat exchangers. Background Technology

[0002] In conventional heat pump structures, the drain port of a plate heat exchanger is usually located close to the edge of the equipment and must extend outside the unit for drainage. This design has the following significant drawbacks: 1. Limited installation location: The heat exchanger must be close to the edge of the equipment; otherwise, drainage is impossible. Furthermore, the rigid connection between the equipment edge and the drain port increases vibration transmission. 2. Difficulty in direction adjustment: The drain port has a fixed orientation, making it difficult to adapt to different layout requirements, thus affecting the heat exchanger's drainage performance. 3. Lack of modular drain interface: It cannot be quickly disassembled and assembled, making maintenance inconvenient. 4. Low space utilization: The overall structure is limited by the drain port location, affecting optimized layout, preventing flexible adjustment of the drainage path, and making it unsuitable for complex layouts. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a plate heat exchanger drain device that can support multi-directional drain adjustment, adapt to different installation positions of heat exchangers, and thus adapt to different layout requirements, achieve efficient draining, enable quick disassembly and assembly, facilitate maintenance, flexibly adjust the draining path, and reduce vibration transmission.

[0004] The technical solution adopted in this invention is as follows:

[0005] A plate heat exchanger drain device includes a casing and a drain assembly. The drain assembly includes a housing, a pipe plug, and a connecting rod. A second drain outlet is connected to one side of the housing, a through hole is provided on the adjacent side, and a rear cover is detachably connected to the other adjacent side. The second drain outlet protrudes outward from the housing, and an internal thread is provided on the inner side of the through hole. The connecting rod is disposed inside the housing, with one end connected to the pipe plug and the other end sliding through the rear cover and connected to a handle. A first drain outlet is connected to one side of the bottom of the casing, protruding outward from the casing, and an external thread is provided on its outer side that engages with the internal thread. The pipe plug is movably embedded in the first drain outlet.

[0006] Preferably, the back cover is connected to the housing by fixing screws.

[0007] Preferably, the front side of the back cover is connected to a protrusion, which is embedded in the housing.

[0008] As a preferred option, the second sewage outlet is connected to a flexible corrugated pipe via a clamp.

[0009] Preferably, the outer side of the second sewage outlet has several uneven textures evenly distributed.

[0010] Preferably, several flexible sealing rings are evenly arranged on the outer side of the pipe plug, and both the pipe plug and the flexible sealing rings are made of rubber.

[0011] Preferably, the pipe plug is arranged in a frustum shape.

[0012] Preferably, the sewage discharge assembly also includes a flexible sealing sleeve, which surrounds the middle outer side of the connecting rod, with one end fixedly connected to the connecting rod and the other end connected to the side of the rear cover near the pipe plug.

[0013] Preferably, the housing, connecting rod, and back cover are all made of stainless steel.

[0014] Preferably, the handle includes a straight rod portion and hemispherical portions symmetrically connected to both ends of the straight rod portion, with a connecting rod vertically connected to the middle of the straight rod portion.

[0015] The beneficial effects of this invention are as follows:

[0016] The casing of the plate heat exchanger's drain device is connected to the internal thread of the through hole in the shell via the external thread of the first drain port, supporting 360° thread rotation. This allows for multi-directional drain adjustment, adapting to different installation positions of the heat exchanger and various layout requirements, achieving efficient draining. It also allows for quick disassembly and assembly of the rear cover, facilitating cleaning of the shell interior. Furthermore, it allows for quick disassembly and assembly of the modular drain components, facilitating maintenance or replacement. The second drain port can be connected to a flexible corrugated pipe via clamps, which allows for flexible adjustment of the drain path and reduces vibration transmission. Attached Figure Description

[0017] Figure 1 This is a structural exploded view of the wastewater discharge device for a plate heat exchanger.

[0018] Figure 2 This is a structural breakdown diagram of the sewage discharge component.

[0019] Figure 3 This is a partial cross-sectional view of the internal structure of the sewage discharge assembly.

[0020] Figure 4 This is a front view of the sewage discharge component.

[0021] Figure 5 This is a schematic diagram of the installation of a plate heat exchanger blowdown device in a heat pump system.

[0022] Figure 6 for Figure 5 Enlarged cross-sectional view of the structure at point A in the middle.

[0023] In the diagram: 1. Chassis; 2. Housing; 3. Pipe plug; 4. Connecting rod; 5. Second drain outlet; 6. Through hole; 7. Rear cover; 8. Internal thread; 9. Handle; 901. Straight rod part; 902. Hemispherical part; 10. First drain outlet; 11. External thread; 12. Fixing screw; 13. Protrusion; 14. Embossing; 15. Flexible sealing ring; 16. Flexible sealing sleeve. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-6 The present invention provides a technical solution: a plate heat exchanger sewage discharge device, including a casing 1 and a sewage discharge assembly, the sewage discharge assembly including a shell 2, a pipe plug 3 and a connecting rod 4, a second sewage discharge port 5 is provided on one side of the shell 2, a through hole 6 is provided on the adjacent side, and a rear cover 7 is detachably connected to the other adjacent side, the second sewage discharge port 5 protrudes outward from the shell 2, the inner side of the through hole 6 is provided with an internal thread 8, the connecting rod 4 is disposed in the shell 2, one end of the connecting rod 4 is connected to the pipe plug 3, and the other end slides through the rear cover 7 and is connected to a handle 9, a first sewage discharge port 10 is provided on one side of the bottom of the casing 1, the first sewage discharge port 10 protrudes outward from the casing 1, and the outer side of the first sewage discharge port 10 is provided with an external thread 11 that is movably engaged with the internal thread 8, the pipe plug 3 is movably embedded in the first sewage discharge port 10;

[0026] The through hole 6 on one side of the housing 2 is connected to the external thread 11 on the outside of the first sewage outlet 10 on the bottom side of the chassis 1 via the internal thread 8, thereby supporting 360° thread rotation, realizing multi-directional sewage discharge adjustment, adapting to different installation positions of the heat exchanger, and thus adapting to different layout requirements, achieving efficient sewage discharge, enabling quick disassembly and assembly of the rear cover 7, thus facilitating cleaning inside the housing 2, and enabling quick disassembly and assembly of the modular sewage discharge components, thus facilitating maintenance or replacement. When it is necessary to discharge sewage from inside the chassis 1, the connecting rod 4 is pulled by the handle 9, and the pipe plug 3 is pulled out from inside the first sewage outlet 10 through the connecting rod 4, thus connecting the first sewage outlet 10 with the inside of the housing 2. Sewage is discharged from inside the chassis 1 through the first sewage outlet 10 into the housing 2, and then discharged from the second sewage outlet 5. The second sewage outlet 5 can be connected to a flexible corrugated pipe through a clamp, and the sewage discharge path can be flexibly adjusted and vibration transmission can be reduced through the flexible corrugated pipe.

[0027] To facilitate the installation and removal of the back cover 7 and improve the installation stability of the back cover 7, in this embodiment, preferably, the back cover 7 is connected to the housing 2 by fixing screws 12. The purpose is to ensure the assembly stability by connecting the back cover 7 to the housing 2 by fixing screws 12. When disassembling, the back cover 7 can be opened by simply loosening the fixing screws 12, which is convenient for cleaning the inside of the housing 2 or replacing parts, and facilitates the installation and removal of the back cover 7.

[0028] In order to facilitate the installation stability of the back cover 7, in this embodiment, preferably, a protrusion 13 is connected to the front side of the back cover 7, and the protrusion 13 is embedded in the housing 2. The purpose is to improve the stability of the back cover 7 assembly by embedding the protrusion 13 on the front side of the back cover 7 into the housing 2.

[0029] In order to facilitate flexible adjustment of the sewage discharge path and reduce vibration transmission, in this embodiment, preferably, the second sewage outlet 5 is connected to a flexible corrugated pipe by a clamp. The purpose is that the flexible corrugated pipe can be bent arbitrarily to adjust the sewage discharge path, while absorbing equipment vibration and preventing it from being transmitted to external pipes.

[0030] In order to improve the sealing effect of the connection between the second sewage outlet 5 and the pipeline, in this embodiment, preferably, a number of concave and convex textures 14 are evenly arranged on the outer side of the second sewage outlet 5. The purpose of the concave and convex textures 14 is to enhance the friction of the clamp, prevent it from falling off, and improve the sealing effect of the connection between the second sewage outlet 5 and the pipeline.

[0031] In order to improve the sealing effect between the pipe plug 3 and the first sewage outlet 10, in this embodiment, preferably, a number of flexible sealing rings 15 are evenly arranged on the outer side of the pipe plug 3. Both the pipe plug 3 and the flexible sealing rings 15 are made of rubber. The purpose is to form a multiple seal through the flexible sealing rings 15. When the pipe plug 3 is inserted, the flexible sealing rings 15 undergo compression deformation, thereby improving the sealing effect between the pipe plug 3 and the first sewage outlet 10.

[0032] In order to improve the sealing effect between the pipe plug 3 and the first sewage outlet 10, in this embodiment, the pipe plug 3 is preferably set in a frustum shape. The purpose of setting the pipe plug 3 in a frustum shape is to generate radial expansion force when the pipe plug 3 is inserted, thereby improving the sealing effect between the pipe plug 3 and the first sewage outlet 10 and effectively preventing leakage.

[0033] To facilitate the isolation of sewage from the gap between the rear cover 7 and the connecting rod 4 and avoid leakage risk, in this embodiment, preferably, the sewage discharge assembly also includes a flexible sealing sleeve 16. The flexible sealing sleeve 16 surrounds the middle outer side of the connecting rod 4, with one end fixedly connected to the connecting rod 4 and the other end connected to the side of the rear cover 7 near the pipe plug 3. The purpose is to isolate sewage from the gap between the rear cover 7 and the connecting rod 4 through the flexible sealing sleeve 16, thus avoiding leakage risk. When the handle 9 is pulled outward from the housing 2, the flexible sealing sleeve 16 forms a flexible folded state. When the handle 9 is pushed inward from the housing 2, the flexible sealing sleeve 16 forms a flexible unfolded state. Regardless of whether the flexible sealing sleeve 16 is in the folded or unfolded state, one end is fixedly connected to the connecting rod 4, and the other end is connected to one side of the rear cover 7, ensuring that the gap between the rear cover 7 and the connecting rod 4 is isolated from the inside of the housing 2, preventing sewage from flowing out from the gap between the rear cover 7 and the connecting rod 4 and avoiding leakage risk.

[0034] In order to improve corrosion resistance and extend service life, in this embodiment, preferably, the housing 2, the connecting rod 4 and the rear cover 7 are all made of stainless steel.

[0035] To improve operational comfort, in this embodiment, preferably, the handle 9 includes a straight rod portion 901 and hemispherical portions 902 symmetrically connected to both ends of the straight rod portion 901. The connecting rod 4 is vertically connected to the middle of the straight rod portion 901. The purpose of providing hemispherical portions 902 at both ends of the straight rod portion 901 of the handle 9 is to conform to ergonomics and prevent scratching the hands. The straight rod portion 901 is vertically connected to the connecting rod 4 to facilitate the application of force and ensure that the direction of the pulling force is consistent with the axis of movement of the pipe plug.

[0036] The working principle and usage process of this invention: A through hole 6 is provided on one side of the housing 2, and an internal thread 8 is provided on the inner side of the through hole 6. An external thread 11 is provided on the outer side of the first sewage outlet 10 at the bottom of the chassis 1. Align the through hole 6 of the sewage discharge component with the first sewage outlet 10 of the chassis 1, rotate the housing 2 to the desired sewage discharge direction, and lock it with thread engagement. It supports 360° rotation adjustment. Users can freely adjust the orientation of the second sewage outlet 5 according to the heat exchanger installation position to adapt to complex layout requirements.

[0037] The rear cover 7 is connected to the housing 2 by fixing screws 12. The protrusion 13 on the front side of the rear cover 7 is embedded in the housing 2 to ensure assembly stability. When disassembling, the rear cover 7 can be opened by simply loosening the fixing screws 12, which is convenient for cleaning the inside of the housing 2 or replacing parts. The entire sewage discharge assembly can be removed from the chassis 1 as a whole. The threaded connection can be separated by rotating the housing. The modular design facilitates quick replacement or maintenance and reduces downtime.

[0038] One end of the connecting rod 4 is connected to the pipe plug 3, and the other end passes through the rear cover 7 and fixes the handle 9. When closed, the pipe plug 3 is embedded in the first sewage outlet 10. When discharging sewage, the handle 9 is pulled outward, and the handle 9 drives the connecting rod 4 to slide. The connecting rod 4 drives the pipe plug 3 to disengage from the first sewage outlet 10. Sewage in the casing 1 flows into the housing 2 through the first sewage outlet 10 and is finally discharged from the second sewage outlet 5.

[0039] Example 1

[0040] When the heat exchanger is located in a corner of the equipment and needs to be drained at an angle to the floor drain, align the through hole 6 of the drain assembly with the first drain outlet 10 of the casing 1, rotate the casing 2 so that the second drain outlet 5 faces the floor drain, that is, adjust the angle to 45°, fit a flexible corrugated pipe at the concave and convex texture 14 of the second drain outlet 5, tighten the clamp, and bend the flexible corrugated pipe to extend to the floor drain.

[0041] Example 2

[0042] When the equipment is densely arranged and the sewage discharge component needs to be quickly disassembled and cleaned, loosen the housing 2, remove the sewage discharge component as a whole, remove the fixing screws 12, separate the back cover 7 to expose the inside of the housing 2, rinse the scale on the surface of the inner cavity of the housing 2 and the pipe plug 3, check whether the flexible sealing sleeve 16 is aged, replace the new parts and reassemble the component, rotate and reinstall it in the original position of the chassis.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plate heat exchanger blowdown device, comprising a casing (1), characterized in that: It also includes a sewage discharge assembly, which includes a housing (2), a pipe plug (3) and a connecting rod (4). A second sewage outlet (5) is connected to one side of the housing (2), a through hole (6) is provided on the adjacent side, and a rear cover (7) is detachably connected to the other adjacent side. The second sewage outlet (5) protrudes outward from the housing (2). An internal thread (8) is provided on the inner side of the through hole (6). The connecting rod (4) is located inside the housing (2), and one end of it is connected to the pipe plug (3). The other end slides through the rear cover (7) and is connected to a handle (9). A first sewage outlet (10) is connected to one side of the bottom of the chassis (1). The first sewage outlet (10) protrudes outward from the chassis (1), and an external thread (11) is provided on its outer side that is movably engaged with the internal thread (8). The pipe plug (3) is movably embedded in the first sewage outlet (10).

2. The plate heat exchanger blowdown device according to claim 1, characterized in that: The rear cover (7) is connected to the housing (2) by fixing screws (12).

3. The plate heat exchanger blowdown device according to claim 2, characterized in that: The front side of the rear cover (7) is connected to a protrusion (13), which is embedded in the housing (2).

4. The plate heat exchanger blowdown device according to claim 1, characterized in that: The second sewage outlet (5) is connected to a flexible corrugated pipe by a clamp.

5. The plate heat exchanger blowdown device according to claim 4, characterized in that: The outer side of the second sewage outlet (5) is evenly distributed with several uneven textures (14).

6. The plate heat exchanger blowdown device according to claim 1, characterized in that: Several flexible sealing rings (15) are evenly arranged on the outer side of the pipe plug (3), and both the pipe plug (3) and the flexible sealing rings (15) are made of rubber.

7. The plate heat exchanger blowdown device according to claim 1, characterized in that: The pipe plug (3) is arranged in a frustum shape.

8. The plate heat exchanger blowdown device according to claim 1, characterized in that: The sewage discharge assembly also includes a flexible sealing sleeve (16), which surrounds the middle outer side of the connecting rod (4), with one end fixedly connected to the connecting rod (4) and the other end connected to the side of the rear cover (7) near the pipe plug (3).

9. The plate heat exchanger blowdown device according to claim 1, characterized in that: The housing (2), connecting rod (4) and rear cover (7) are all made of stainless steel.

10. The plate heat exchanger blowdown device according to claim 1, characterized in that: The handle (9) includes a straight rod (901) and a hemispherical part (902) symmetrically connected to both ends of the straight rod (901). The connecting rod (4) is vertically connected to the middle of the straight rod (901).

Images