Displacement heat exchanger with inner wall cleaning mechanism

Abstract

The utility model relates to the field of displacement heat exchangers and discloses a displacement heat exchanger with an inner wall cleaning mechanism which comprises a heat exchanger body, a fixed inner cavity is formed in the heat exchanger body, a cleaning support is movably mounted in the fixed inner cavity, and a fixed groove is formed in one side of the outer surface of the cleaning support. A connecting gear ring is fixedly mounted on the edge of the top end of the guiding support ring, a plurality of scraping pieces are welded to the outer surface of the connecting gear ring, a threaded hole is formed in the edge of the upper surface of the cleaning support in a penetrating mode, and an internal thread gear is rotatably mounted on the upper surface of the cleaning support close to the outside of the threaded hole; the multiple scrapers move up and down along the inner wall of the fixed inner cavity and rotate, so that the effect of conveniently cleaning the inner wall of the fixed inner cavity is achieved, the overall heat transfer efficiency of the heat exchanger body is improved, and the problem that the use efficiency of the heat exchanger body is affected due to the fact that incrustation is attached to the inner wall of the fixed inner cavity is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of volumetric heat exchangers, in particular to a volumetric heat exchanger with an inner wall cleaning mechanism. BACKGROUND

[0002] The volumetric heat exchanger mainly realizes heat exchange based on the principles of heat conduction and heat convection. The hot medium (such as steam or high-temperature hot water) flows in the pipe (heat exchange pipe bundle) inside the heat exchanger, and the cold medium (usually water) flows in the space (shell side) between the shell and the heat exchange pipe bundle. Heat is transferred from the hot medium to the cold medium through the pipe wall, and the flow of the cold and hot media also promotes the convective transfer of heat.

[0003] When the fluid (especially water containing calcium, magnesium and other ions) flows in the volumetric heat exchanger, a series of physical and chemical changes will occur due to factors such as temperature change and fluid composition. For example, the solubility of calcium, magnesium and other ions in water decreases after being heated, which is easy to crystallize and precipitate on the inner wall surface of the heat exchanger, forming scale. The presence of scale significantly increases the thermal resistance and has a certain impact on the heat transfer, reducing the overall heat exchange efficiency of the volumetric heat exchanger.

[0004] For the related technology in the above, the inventor believes that the volumetric heat exchanger has the defect that the inner wall scale is not easy to clean after being used for a certain period of time, therefore, a volumetric heat exchanger with an inner wall cleaning mechanism is proposed to solve the above problems. Content of the utility model

[0005] In order to solve the problem that the volumetric heat exchanger has inner wall scale after being used for a certain period of time, the present application provides a volumetric heat exchanger with an inner wall cleaning mechanism.

[0006] The volumetric heat exchanger with an inner wall cleaning mechanism provided by the present application adopts the following technical scheme:

[0007] A volumetric heat exchanger with an inner wall cleaning mechanism, comprising a heat exchanger main body, a fixed inner cavity is formed in the heat exchanger main body, a cleaning support is movably installed in the fixed inner cavity, a fixed groove is formed on one side of the outer surface of the cleaning support, a guide support ring is rotatably installed in the fixed groove, a connecting tooth ring is fixedly installed at the top end of the guide support ring, a plurality of scrapers are welded to the outer surface of the connecting tooth ring, a threaded hole is formed through the edge of the upper surface of the cleaning support, an internal thread gear is rotatably installed on the outer part of the threaded hole on the upper surface of the cleaning support, a connecting gear is rotatably installed between the connecting tooth ring and the internal thread gear on the upper surface of the cleaning support, and a lifting mechanism is further provided in the fixed inner cavity for controlling the upward and downward movement of the cleaning support.

[0008] Preferably, the lifting mechanism comprises a lead screw, the lead screw is rotatably installed at the upper and lower end portions of the inner wall of the fixed inner cavity through a threaded hole, the top end of the lead screw extends to the upper surface of the heat exchanger body and is provided with a servo motor, and the upper surface of the cleaning support is also symmetrically provided with a through hole, and a guide support rod is welded through the through hole at the upper and lower ends of the inner wall of the fixed inner cavity.

[0009] Preferably, the connecting tooth ring and the internally toothed gear are both movably arranged close to the outer surface of the connecting gear, and the connecting tooth ring and the internally toothed gear are both meshed with the connecting gear.

[0010] Preferably, the number of the scraping blades is six, and one side of the scraping blades abuts against the inner wall of the fixed inner cavity.

[0011] Preferably, the outer surface of the lead screw is provided with external threads, one side of the inner wall of the internally toothed gear is provided with internal threads, the threaded hole and the internally toothed gear are both matched with the lead screw, the outer diameter of the guide support rod is smaller than the inner diameter of the through hole, and the through hole and the guide support rod are matched with each other.

[0012] To sum up, the application has the following beneficial technical effects:

[0013] By rotating the lead screw to drive the cleaning support to move up and down, the lead screw drives the internally toothed gear to rotate, and then drives the connecting tooth ring to rotate synchronously under the connection of the connecting gear, so that the rotating scraping blades scrape off the scale adhered to the inner wall of the fixed inner cavity. Compared with the prior art, the application has the effect of facilitating the cleaning of the inner wall of the fixed inner cavity, improves the overall heat transfer efficiency of the heat exchanger body, and solves the problem of scale adhering to the inner wall of the fixed inner cavity affecting the use efficiency of the heat exchanger body. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the application embodiment;

[0015] Figure 2 is a schematic diagram of the cross-sectional structure of the cleaning support in the application embodiment;

[0016] Figure 3 is a schematic diagram of the structure of the internally toothed gear in the application embodiment;

[0017] Figure 4 is a schematic diagram of the structure of the connecting tooth ring in the application embodiment;

[0018] Marked: 1, heat exchanger body; 2, fixed inner cavity; 3, cleaning support; 4, fixed groove; 5, guide support ring; 6, connecting tooth ring; 7, scraping blade; 8, threaded hole; 9, internally toothed gear; 10, connecting gear; 11, lead screw; 12, servo motor; 13, through hole; 14, guide support rod. DETAILED DESCRIPTION

[0019] The following description will be made in conjunction with the accompanying drawings. Figures 1-4 The application is further described in detail.

[0020] The embodiment of the application discloses a volumetric heat exchanger with an inner wall cleaning mechanism. Figures 1-4 A volumetric heat exchanger with an inner wall cleaning mechanism, comprising a heat exchanger body 1, a fixed inner cavity 2 is formed in the heat exchanger body 1, a cleaning support 3 is movably installed in the fixed inner cavity 2, a fixed groove 4 is formed in one side of the outer surface of the cleaning support 3, a guide support ring 5 is rotatably installed in the fixed groove 4, a connecting gear ring 6 is fixedly installed at the top end of the guide support ring 5, a plurality of scrapers 7 are welded to the outer surface of the connecting gear ring 6, the number of the scrapers 7 is six, one side of the scrapers 7 abuts against the inner wall of the fixed inner cavity 2, a threaded hole 8 is formed in the edge of the upper surface of the cleaning support 3, an internal thread gear 9 is rotatably installed on the outer part of the threaded hole 8, a connecting gear 10 is rotatably installed between the connecting gear ring 6 and the internal thread gear 9, the connecting gear ring 6 and the internal thread gear 9 are movably close to the outer surface of the connecting gear 10, the connecting gear ring 6 and the internal thread gear 9 are meshed with the connecting gear 10, and a lifting mechanism is further arranged in the fixed inner cavity 2 and used for controlling the up-and-down movement of the cleaning support 3.

[0021] By making the cleaning support 3 move up and down in the fixed inner cavity 2, the cleaning support 3 in movement drives the internal thread gear 9 to rotate along the outer surface of the lead screw 11, and the internal thread gear 9 drives the connecting gear 10 to rotate, and then the rotating connecting gear 10 drives the connecting gear ring 6 to rotate synchronously, so that the guide support ring 5 rotates in the fixed groove 4, and then the connecting gear ring 6 in movement is supported, and the plurality of scrapers 7 on the outer surface of the connecting gear ring 6 rotate while moving up and down along the inner wall of the fixed inner cavity 2, so that the scale adhered to the inner wall of the fixed inner cavity 2 is scraped off, and the cleaning effect of the scrapers 7 on the inner wall of the fixed inner cavity 2 is embodied.

[0022] Refer to Figure 2 and Figure 3 The lifting mechanism comprises a lead screw 11, the lead screw 11 is rotatably installed on the inner wall of the fixed inner cavity 2 at the upper and lower ends, a servo motor 12 is installed on the upper surface of the heat exchanger body 1 and extends to the top end of the lead screw 11, a through hole 13 is symmetrically formed in the upper surface of the cleaning support 3, guide support rods 14 are welded to the inner wall of the fixed inner cavity 2 and pass through the through hole 13, the outer surface of the lead screw 11 is provided with external threads, the inner wall of the internal thread gear 9 is provided with internal threads, the threaded hole 8 and the internal thread gear 9 are matched with the lead screw 11, the outer diameter of the guide support rod 14 is smaller than the inner diameter of the through hole 13, and the through hole 13 and the guide support rod 14 are embedded.

[0023] By starting the servo motor 12, the lead screw 11 is driven to rotate. The rotating lead screw 11 drives the cleaning bracket 3 to move up and down. At the same time, the guide rod 14 guides and supports the cleaning bracket 3 in motion, keeping the cleaning bracket 3 in a stable up and down motion state inside the fixed inner cavity 2. This demonstrates the guiding and supporting effect of the guide rod 14 on the cleaning bracket 3.

[0024] The implementation principle of a volumetric heat exchanger with an internal wall cleaning mechanism in this application embodiment is as follows: A servo motor 12 is started to drive the lead screw 11 to rotate. The input terminal of the servo motor 12 is electrically connected to the output terminal of an external power supply. The rotating lead screw 11 drives the cleaning bracket 3 to move up and down, while the guide rod 14 guides and supports the moving cleaning bracket 3, keeping the cleaning bracket 3 in a stable up-and-down motion state within the fixed inner cavity 2. This demonstrates the guiding and supporting effect of the guide rod 14 on the cleaning bracket 3. The moving cleaning bracket 3 drives the internal thread gear 9 to rotate along the outer surface of the lead screw 11, and the internal thread gear... Wheel 9 drives connecting gear 10 to rotate, which in turn causes connecting gear 10 to drive connecting gear ring 6 to rotate synchronously. This causes guide ring 5 to rotate along the inside of fixed groove 4, thereby providing dynamic support for the moving connecting gear ring 6. Multiple scrapers 7 on the outer surface of connecting gear ring 6 move up and down along the inner wall of fixed cavity 2 while rotating, thus scraping away scale adhering to the inner wall of fixed cavity 2. Compared with existing technologies, this solution facilitates cleaning of the inner wall of fixed cavity 2, improves the overall heat transfer efficiency of heat exchanger body 1, and solves the problem of scale adhering to the inner wall of fixed cavity 2 affecting the efficiency of heat exchanger body 1.

[0025] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0026] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0027] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0028] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A positive displacement heat exchanger with inner wall cleaning mechanism, comprising a heat exchanger body (1), a fixed inner cavity (2) is opened in the inside of the heat exchanger body (1), characterized in that: The cleaning support (3) is movably arranged inside the fixed inner cavity (2), a fixed groove (4) is arranged on one side of the outer surface of the cleaning support (3), a guide support ring (5) is rotatably arranged inside the fixed groove (4), a connecting gear ring (6) is fixedly arranged on the top end edge of the guide support ring (5), a plurality of scraping blades (7) are welded on the outer surface of the connecting gear ring (6), a threaded hole (8) is arranged on the edge of the upper surface of the cleaning support (3), an internally threaded gear (9) is rotatably arranged on the outer side of the threaded hole (8) on the upper surface of the cleaning support (3), a connecting gear (10) is rotatably arranged between the connecting gear ring (6) and the internally threaded gear (9) on the upper surface of the cleaning support (3), and a lifting mechanism is further arranged inside the fixed inner cavity (2) for controlling the up-and-down movement of the cleaning support (3).

2. A positive displacement heat exchanger with internal wall cleaning mechanism as claimed in claim 1 wherein: The lifting mechanism comprises a lead screw (11), the lead screw (11) is rotatably arranged on the inner wall of the fixed inner cavity (2) at the upper and lower edges, a servo motor (12) is arranged on the top end of the lead screw (11) extending to the upper surface of the heat exchanger body (1), a through hole (13) is symmetrically arranged on the upper surface of the cleaning support (3), and guide support rods (14) are welded on the upper and lower ends of the inner wall of the fixed inner cavity (2) penetrating through the through hole (13).

3. A positive displacement heat exchanger with internal wall cleaning mechanism as claimed in claim 1 wherein: The connecting gear ring (6) and the internally threaded gear (9) are movably arranged close to the outer surface of the connecting gear (10), and the connecting gear ring (6) and the internally threaded gear (9) are in meshing connection with the connecting gear (10).

4. A positive displacement heat exchanger with internal wall cleaning mechanism as claimed in claim 1 wherein: The number of the scraping blades (7) is six, and one side edge of the scraping blades (7) abuts against the inner wall of the fixed inner cavity (2).

5. A positive displacement heat exchanger with internal wall cleaning mechanism as claimed in claim 2 wherein: An external thread is arranged on the outer surface of the lead screw (11), an internal thread is arranged on one side of the inner wall of the internally threaded gear (9), the threaded hole (8) and the internally threaded gear (9) are matched with the lead screw (11), the outer diameter of the guide support rod (14) is smaller than the inner diameter of the through hole (13), and the through hole (13) and the guide support rod (14) are in mutual embedding.

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