Extrusion magnesium rod for water heater and water heater

Abstract

The utility model discloses an extrusion magnesium rod for a water heater and the water heater, and the extrusion magnesium rod for the water heater comprises a magnesium base body, a rod core and a pressing device. One part of the rod core is inserted into the axial center hole of the magnesium base body; the other part is exposed out of the magnesium base body, and a pressing device independent of the rod core is fixed at the position, close to the magnesium base body, of the part. The pressing device which is originally independent of the rod core and the rod core are assembled and combined into a whole, the sealing gasket is arranged on the periphery of the rod core in a sleeving mode, the pressing device is used for pressing the sealing gasket to achieve sealing when the magnesium rod is installed, and due to the fact that the pressing device is originally independent of the rod core, segregation of an assembly formed by the rod core and the pressing device cannot be caused; the service life of the magnesium rod is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of water heater devices, specifically, it relates to an extruded magnesium rod for a water heater and a water heater. Background Technology

[0002] The inner tank of a storage-type electric water heater is easily corroded due to prolonged immersion in water. Typically, a magnesium rod is installed inside the inner tank, utilizing the principle of sacrificial anode protection of cathode. The magnesium rod acts as the anode, and the metal inner tank of the water heater as the cathode, forming a galvanic cell in the water. The anode of this galvanic cell—the magnesium rod—constantly reacts with negative ions in the water and is consumed through corrosion; simultaneously, it provides a protective current to the cathode—the metal inner tank—ensuring its protection.

[0003] Existing magnesium rods are mainly produced using casting processes. The rod core has steps and is formed by cold heading in one piece. However, during the casting process, segregation occurs, resulting in uneven chemical composition and causing excessively rapid corrosion. Furthermore, magnesium rods experience problems such as magnesium matrix detachment during use, leading to malfunctions.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an extruded magnesium rod for water heaters, which improves the stability of magnesium rods and reduces malfunctions during use.

[0006] The second objective of this utility model is a water heater.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] An extruded magnesium rod for a water heater includes a magnesium matrix, a rod core, and a pressing device.

[0009] The rod core is partially inserted into the axial central hole of the magnesium matrix; the other part is exposed in the magnesium matrix, and a clamping device independent of the rod core is fixed to this part near the magnesium matrix.

[0010] When installing the magnesium rod, a sealing gasket needs to be fitted around the outer circumference of the rod core. Since the magnesium matrix is ​​continuously consumed, when the outer diameter of the magnesium matrix is ​​reduced to a certain extent, the cross-section of the magnesium matrix cannot press the sealing gasket. Therefore, the sealing effect cannot be achieved by pressing the sealing gasket with the magnesium matrix. Thus, a clamping device needs to be set on the core of the magnesium rod to press the sealing gasket and achieve a seal. This clamping device is not as easily worn as the magnesium matrix.

[0011] However, since the clamping device and the rod core are cast as a single unit, segregation can occur, affecting the overall service life of the magnesium rod. Therefore, in this invention, the clamping device, which was originally independent of the rod core, is assembled and integrated with the rod core. A sealing gasket is placed around the outer circumference of the rod core, and the clamping device is used to press the sealing gasket to achieve a seal. Because the clamping device was originally independent of the rod core, segregation of the assembly formed by the rod core and the clamping device is avoided, thus ensuring the service life of the magnesium rod.

[0012] Furthermore, the clamping device is provided with a through hole and is sleeved on the outer periphery of the rod core. The clamping device is welded to the rod core.

[0013] To ensure a secure assembly between the clamping device and the rod core, the clamping device is provided with a through hole. The clamping device is fitted onto the outer circumference of the rod core through the through hole and is welded to the rod core for fixation. Since the clamping device and the rod core are welded and fixed as a single unit, the assembly formed between the two does not suffer from segregation caused by structural abrupt changes in a single casting.

[0014] Furthermore, the through-hole of the clamping device comprises two parts: a uniform diameter hole and an enlarged diameter hole. The uniform diameter hole is located on the side adjacent to the magnesium substrate, while the enlarged diameter hole is located on the side away from the magnesium substrate. The welding position between the clamping device and the rod core is located within the enlarged diameter hole of the clamping device.

[0015] The equal diameter hole of the clamping device matches the outer diameter of the rod core, and the inner diameter of the enlarged diameter hole of the clamping device gradually increases along the axial direction away from the magnesium matrix.

[0016] To ensure a secure connection between the clamping device and the rod core, the rod core is a cylindrical shape with a constant diameter. The through-hole of the clamping device consists of two parts: a constant diameter hole and an enlarged diameter hole. The constant diameter hole is located on the side adjacent to the magnesium substrate and matches the outer diameter of the rod core. The enlarged diameter hole is located on the side away from the magnesium substrate. The welding position between the clamping device and the rod core is located inside the enlarged diameter hole of the clamping device. In this way, the diameter of the enlarged diameter hole in the through-hole of the clamping device increases as it moves further away from the magnesium substrate, gradually expanding the space for welding. Moreover, the welding position is not hindered by the magnesium substrate, making welding easier.

[0017] Furthermore, since the welding position between the clamping device and the core is located inside the enlarged diameter hole of the clamping device, the resulting weld is located inside the enlarged diameter hole and does not protrude from the axial side of the clamping device, ensuring the sealing effect when the clamping device clamps the sealing gasket.

[0018] Furthermore, the clamping device is disc-shaped, with the outer diameter of the disc being less than or equal to the outer diameter of the magnesium substrate.

[0019] To better utilize the clamping device to compress the sealing gasket, and to avoid the clamping device occupying too much space, the clamping device is disc-shaped, with its outer diameter less than or equal to the outer diameter of the magnesium substrate. Since the magnesium substrate of the magnesium rod is continuously consumed, the outer diameter of the disc of the clamping device does not need to be equal to the initial outer diameter of the magnesium substrate, but only needs to be greater than the outer diameter of the sealing gasket.

[0020] Furthermore, one end of the rod core is flush with one end of the magnesium matrix, while the other end of the rod core protrudes from the magnesium matrix.

[0021] This utility model also proposes a water heater, including the above-mentioned extruded magnesium rod for water heaters.

[0022] A sealing gasket is provided on the side of the clamping device away from the magnesium substrate, and the sealing gasket is fitted onto the rod core through a central hole. The outer diameter of the sealing gasket is less than or equal to the outer diameter of the clamping device.

[0023] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0024] This utility model discloses an extruded magnesium rod for water heaters and a water heater thereof. The extruded magnesium rod for water heaters includes a magnesium matrix, a rod core, and a clamping device. A portion of the rod core is inserted into the axial central hole of the magnesium matrix; another portion protrudes from the magnesium matrix. A clamping device, originally independent of the rod core, is fixed to this portion near the magnesium matrix. By integrating the clamping device, originally independent of the rod core, with the rod core, and placing a sealing gasket around the outer circumference of the rod core, the clamping device presses the sealing gasket to achieve a seal during magnesium rod installation. Because the clamping device was originally independent of the rod core, segregation of the assembly formed by the rod core and the clamping device is avoided, thus ensuring the service life of the magnesium rod.

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0027] Figure 1 This is a partial half-sectional schematic diagram of an extruded magnesium rod for a water heater according to this utility model;

[0028] Figure 2 This is a schematic diagram of the opening of a pressing device for extruded magnesium rods for water heaters according to this utility model;

[0029] Figure 3 This is a half-sectional view of the opening of a pressing device for extruded magnesium rods for water heaters according to this utility model;

[0030] Figure 4 This is a schematic diagram of the welding of the core of an extruded magnesium rod for a water heater and the pressing device according to this utility model.

[0031] In the figure: 1. Rod core; 2. Sealing gasket; 3. Magnesium matrix; 4. Clamping device; 5. Welded part; 41. Equal diameter hole; 42. Expanded diameter hole.

[0032] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only to facilitate the description of this utility model and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Combination Figures 1 to 4 As shown, this utility model discloses an extruded magnesium rod for water heaters, comprising a magnesium matrix 3, a rod core 1, and a pressing device 4.

[0037] The rod core 1 is partially inserted into the axial central hole of the magnesium substrate 3, which is a through hole; the other part is exposed outside the magnesium substrate 3. A clamping device 4, which was originally independent of the rod core 1, is fixed near the position of this part of the magnesium substrate 3. The rod core 1 on the side of the clamping device 4 away from the magnesium substrate 3 is provided with an external thread.

[0038] When installing the magnesium rod, a sealing gasket 2 needs to be fitted around the outer periphery of the rod core 1. Since the magnesium matrix 3 will be continuously consumed, when the outer diameter of the magnesium matrix 3 is reduced to a certain extent, the cross-section of the magnesium matrix 3 cannot press the sealing gasket 2. Therefore, the sealing function cannot be achieved by pressing the sealing gasket 2 with the magnesium matrix 3. Therefore, a pressing device 4 needs to be set on the rod core 1 of the magnesium rod to press the sealing gasket 2 and thus achieve a seal. This pressing device 4 will not be as easily worn as the magnesium matrix 3.

[0039] However, because the clamping device 4 and the rod core 1 are cast as a single unit, segregation and uneven chemical composition can occur, leading to excessively rapid corrosion and affecting the overall service life of the magnesium rod. Therefore, in this invention, the clamping device 4, which was originally independent of the rod core 1, is assembled and combined with the rod core 1 as a single unit. The sealing gasket 2 is placed around the outer circumference of the rod core 1, and the clamping device 4 is used to press the sealing gasket 2 to achieve a seal. Since the clamping device 4 was originally independent of the rod core 1, segregation of the assembly formed by the rod core 1 and the clamping device 4 is avoided, thus ensuring the service life of the magnesium rod.

[0040] The clamping device 4 has a through hole and is sleeved on the outer circumference of the rod core 1. The clamping device 4 is welded to the rod core 1.

[0041] To ensure a secure assembly between the clamping device 4 and the core 1, the clamping device 4 is provided with a through hole. The clamping device 4 is fitted onto the outer circumference of the core 1 through the through hole, and the clamping device 4 is welded and fixed to the core 1. Since the clamping device 4 and the core 1 are welded and fixed as a whole, the assembly formed between the two does not have segregation caused by structural abrupt changes in a single casting.

[0042] The through hole of the clamping device 4 consists of two parts: a uniform diameter hole 41 and an enlarged diameter hole 42. The uniform diameter hole 41 is located on the side adjacent to the magnesium substrate 3, and the enlarged diameter hole 42 is located on the side away from the magnesium substrate 3. The welding position between the clamping device 4 and the rod core 1 is located inside the enlarged diameter hole 42 of the clamping device 4.

[0043] The equal diameter hole 41 of the clamping device 4 is matched with the outer diameter of the rod core 1, and the inner diameter of the enlarged diameter hole 42 of the clamping device 4 gradually increases along the axial direction away from the magnesium matrix 3.

[0044] In order to securely connect the clamping device 4 to the core 1, the core 1 is a cylinder of equal diameter. The through hole of the clamping device 4 includes two parts: an equal diameter hole 41 and an enlarged diameter hole 42. The equal diameter hole 41 is located on the side adjacent to the magnesium substrate 3 and matches the outer diameter of the core 1. The enlarged diameter hole 42 is located on the side away from the magnesium substrate 3. The welding position between the clamping device 4 and the core 1 is located in the enlarged diameter hole 42 of the clamping device 4. In this way, the larger the diameter of the enlarged diameter hole 42 in the through hole of the clamping device 4 is, the larger the space of the welding part 5 gradually expands, and the welding position is not hindered by the magnesium substrate 3, which makes the operation easier during welding.

[0045] Furthermore, since the welding position between the clamping device 4 and the core 1 is located inside the enlarged diameter hole 42 of the clamping device 4, the weld formed is located inside the enlarged diameter hole 42 and does not protrude from the axial side of the clamping device 4, so that the clamping device 4 can ensure the sealing effect when clamping the sealing gasket 2.

[0046] The clamping device 4 is in the shape of a disc, and the outer diameter of the disc is less than or equal to the outer diameter of the magnesium substrate 3.

[0047] To better utilize the clamping device 4 to press the sealing gasket 2, and to avoid the clamping device 4 occupying more space, the clamping device 4 is circular, with an outer diameter less than or equal to the outer diameter of the magnesium substrate 3. Since the magnesium substrate 3 of the magnesium rod is continuously consumed, the outer diameter of the circular part of the clamping device 4 does not need to be equal to the initial outer diameter of the magnesium substrate 3, but only needs to be greater than the outer diameter of the sealing gasket 2.

[0048] One end of the core 1 is flush with one end of the magnesium substrate 3, while the other end of the core 1 protrudes from the other end of the magnesium substrate 3. This structure ensures that the core 1 fully supports the magnesium substrate 3, thus preventing the magnesium substrate 3 from falling off and causing malfunctions as it is continuously consumed.

[0049] In this embodiment, the magnesium matrix 3 is made of AZ63B magnesium alloy. The core rod 1 is made of galvanized Q235 steel, and the clamping device 4 is made of Q235 steel.

[0050] This utility model discloses an extruded magnesium rod for water heaters, comprising a magnesium matrix, a rod core, and a clamping device. A portion of the rod core is inserted into the axial central hole of the magnesium matrix; another portion protrudes from the magnesium matrix. A clamping device, originally independent of the rod core, is fixed to this portion near the magnesium matrix. The side of the rod core facing away from the magnesium matrix has an external thread. By integrating the clamping device, originally independent of the rod core, with the rod core, and placing a sealing gasket around the outer circumference of the rod core, the clamping device presses the sealing gasket to achieve a seal during magnesium rod installation. Because the clamping device was originally independent of the rod core, it prevents segregation of the assembly formed by the rod core and the clamping device, and fully supports the magnesium matrix to prevent it from detaching, thereby improving the stability of the magnesium rod, reducing malfunctions, and ensuring its service life.

[0051] The steps for manufacturing the extruded magnesium rod for the above-mentioned water heater are as follows:

[0052] The core rod 1 is pressed into the axial central hole of the magnesium matrix 3.

[0053] Next, a certain length of the magnesium matrix 3 is removed from one end along its axial direction to expose the core 1.

[0054] The clamping device 4 is welded to the outer periphery of the rod core 1 near the magnesium matrix 3.

[0055] The outer circumference of the core rod 1 on the side of the clamping device 4 away from the magnesium matrix 3 is rolled to form an external thread.

[0056] During welding, the clamping device 4 and the core 1 are welded together by laser welding, and the welding position is located in the enlarged diameter hole 42 section in the through hole of the clamping device 4.

[0057] Because the magnesium matrix 3 in the magnesium rod is continuously consumed, the central hole of the magnesium matrix 3 is designed as a through hole during manufacturing, and the rod core 1 is pressed into the central hole of the magnesium matrix 3. For ease of manufacturing, the rod core 1 and the magnesium matrix 3 are the same length. The rod core 1 is completely pressed into the central hole of the magnesium matrix 3, with both ends of the rod core 1 flush with both ends of the magnesium matrix 3. Then, a certain length of the magnesium matrix 3 is removed from one end along its axial direction, exposing the rod core 1. Since the rod core 1 fully supports the magnesium matrix 3, the magnesium matrix 3 will not fall off during the continuous consumption process. However, if the central hole of the magnesium matrix 3 is a blind hole, the rod core 1 will not fully support the magnesium matrix 3, and the rod core 1 will only penetrate a portion of the magnesium matrix 3 axially. During the continuous consumption of the magnesium rod, when the outer diameter of the portion of the magnesium matrix 3 without a central hole is consumed to a point smaller than the diameter of the central hole of the magnesium matrix 3, this portion of the magnesium matrix 3 without a central hole will detach from the rod core 1 because it is not supported by the rod core 1, causing a malfunction of the water heater. Therefore, in this utility model, a technical solution is adopted in which a central through hole is provided in the magnesium matrix 3, and the rod core 1 is the same length as the magnesium matrix 3 and is completely extruded into the magnesium matrix 3.

[0058] To ensure assembly accuracy during installation and prevent the exposed length of the rod core 1 from being longer or shorter than designed due to the long rod core 1 being squeezed into the short magnesium substrate 3, which could cause assembly problems between the rod core 1 and other components, this utility model utilizes a turning step to remove part of the magnesium substrate 3, precisely controlling the exposed length of the rod core 1, and welding the clamping device 4 to a position close to the magnesium substrate 3, thereby ensuring the assembly accuracy of the rod core 1 and other components.

[0059] This utility model also proposes a water heater, including the above-mentioned extruded magnesium rod for water heaters.

[0060] A sealing gasket 2 is provided on the side of the clamping device 4 away from the magnesium matrix 3. The sealing gasket 2 is sleeved on the rod core 1 through the central hole.

[0061] When installing the magnesium rod, the sealing gasket 2 is fitted onto the outer circumference of the rod core 1 through the central hole, and the sealing gasket 2 is pressed together by the clamping device 4 to achieve a seal between the magnesium rod core 1 and other components of the water heater. The outer diameter of the sealing gasket 2 is less than or equal to the outer diameter of the clamping device 4, so that the sealing gasket 2 does not hinder the installation.

[0062] This utility model discloses an extruded magnesium rod for water heaters and a water heater thereof. The extruded magnesium rod for water heaters includes a magnesium matrix, a rod core, and a clamping device. A portion of the rod core is inserted into the axial central hole of the magnesium matrix; another portion protrudes from the magnesium matrix. A clamping device, originally independent of the rod core, is fixed to this portion near the magnesium matrix. The side of the rod core opposite to the magnesium matrix of the clamping device has an external thread. By integrating the clamping device, originally independent of the rod core, with the rod core, and placing a sealing gasket around the outer circumference of the rod core, the clamping device presses the sealing gasket to achieve a seal during magnesium rod installation. Because the clamping device was originally independent of the rod core, it prevents segregation of the assembly formed by the rod core and the clamping device, thus ensuring the service life of the magnesium rod. The manufacturing method of extruded magnesium rods for water heaters involves extruding the rod core into the central hole of a magnesium matrix of equal length and then machining it. This method can precisely control the length of the rod core exposed in the magnesium matrix, thereby ensuring the accuracy of the assembly of the rod core with other components and preventing malfunctions caused by the magnesium matrix falling off due to lack of rod support during consumption.

[0063] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An extruded magnesium rod for a water heater, characterized in that: Includes a magnesium matrix, a rod core, and a clamping device. The rod core is partially inserted into the axial central hole of the magnesium matrix; the other part is exposed in the magnesium matrix, and a clamping device independent of the rod core is fixed to this part near the magnesium matrix.

2. The extruded magnesium rod for a water heater according to claim 1, characterized in that: The clamping device has a through hole and is fitted around the outer circumference of the rod core. The clamping device is welded to the rod core.

3. The extruded magnesium rod for a water heater according to claim 2, characterized in that: The through hole of the clamping device consists of two parts: a uniform diameter hole and an enlarged diameter hole. The uniform diameter hole is located on the side adjacent to the magnesium substrate, and the enlarged diameter hole is located on the side away from the magnesium substrate.

4. The extruded magnesium rod for a water heater according to claim 3, characterized in that: The clamping device is welded to the core rod at a location within the enlarged diameter hole of the clamping device.

5. An extruded magnesium rod for a water heater according to claim 4, characterized in that: The equal diameter hole of the clamping device matches the outer diameter of the rod core, and the inner diameter of the enlarged diameter hole of the clamping device gradually increases along the axial direction away from the magnesium matrix.

6. The extruded magnesium rod for a water heater according to claim 5, characterized in that: The clamping device is disc-shaped, and the outer diameter of the disc is less than or equal to the outer diameter of the magnesium substrate.

7. An extruded magnesium rod for a water heater according to any one of claims 1-6, characterized in that: One end of the rod core located within the magnesium matrix is ​​flush with one end of the magnesium matrix.

8. A water heater, characterized in that: Including the extruded magnesium rod for water heaters as described in any one of claims 1-7.

9. The water heater according to claim 8, characterized in that: A sealing gasket is provided on the side of the clamping device away from the magnesium matrix, and the sealing gasket is sleeved on the rod core through the central hole.

10. The water heater according to claim 9, characterized in that: The outer diameter of the sealing gasket is less than or equal to the outer diameter of the clamping device.

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