Scale inhibition filter stick for inner container of electric water heater

Abstract

The utility model provides a scale inhibition filter stick for an inner container of an electric water heater, which comprises a fixing device, the fixing device is connected with a scale inhibition device, the scale inhibition device comprises at least two scale inhibition containers loaded with scale inhibition materials, and the two ends of each scale inhibition container are provided with splicing structures capable of assembling and overlapping the two scale inhibition containers. And any end of the scale inhibition container is also provided with a mounting part which can be fixedly connected with a fixing device. Due to the splicing structure of the scale inhibition containers, the scale inhibition device can be assembled and stacked through a plurality of scale inhibition containers, so that the scale inhibition device adapts to different inner container capacities and meets the loading capacity requirements of different scale inhibition materials; the assembling stability and reliability are enhanced through the splicing structures and the mounting parts at the two ends of the scale inhibition container. The scale inhibition container is provided with a plurality of hollowed-out holes and hollowed-out grooves, so that the surface area and water flow channels are increased, and the scale inhibition effect is enhanced; the connecting protrusions and the connecting grooves are arranged at the two ends of the scale inhibition containers, the stability and reliability of connection between the multiple scale inhibition containers are improved, and loosening and falling are reduced.

Description

Technical Field

[0002] The utility model relates to the technical field of electric water heater purification equipment, in particular to a scale inhibitor filter rod for an electric water heater inner tank.

Background Art

[0004] Electric water heaters are widely used in modern families. However, the problem of scale deposition in the inner tank of electric water heaters has always been a troublesome issue. The accumulation of scale will not only reduce the heating efficiency of the water heater, increase energy consumption, but also may have an adverse impact on water quality, and even cause corrosion and damage to the inner tank.

[0005] To solve the above problems, various scale inhibition methods and devices have been proposed. Among them, a common water treatment device is a scale inhibitor filter rod installed in the inner tank of an electric water heater. The scale inhibitor filter rod can effectively reduce the formation of scale and keep the equipment clean and efficient. Especially in a high-hardness water environment, using a scale inhibitor filter rod can significantly extend the service life of the equipment and improve the thermal efficiency of the equipment.

[0006] However, there are some problems with the existing scale inhibitor filter rods. First, the applicability of the existing scale inhibitor filter rods on the market is relatively single and is not sufficient to match the inner tanks of water heaters with various capacities. Secondly, there are problems such as insufficient installation stability with the inner tank of the water heater, as well as a large number of materials and high mold costs.

Content of the Utility Model

[0008] Therefore, the utility model provides a scale inhibitor filter rod for an electric water heater inner tank to solve the problems of single applicability, insufficient installation stability with the inner tank of the water heater, as well as a large number of materials and high mold costs existing in the existing scale inhibitor filter rods.

[0009] The utility model is realized by the following technical solutions:

[0010] A scale inhibitor filter rod for an electric water heater inner tank includes a fixing device, the fixing device is connected with a scale inhibition device, the scale inhibition device includes at least two scale inhibition containers for loading scale inhibition materials, splicing structures are respectively arranged at both ends of the scale inhibition containers, and the splicing structures can enable the two scale inhibition containers to be assembled and stacked, and an installation part that can be connected and fixed with the fixing device is further arranged at any one end of the scale inhibition container.

[0011] As described above, for a scale inhibitor filter rod for an electric water heater inner tank, the splicing structure includes a plurality of connecting protrusions respectively arranged at both ends of the scale inhibition container, and connecting grooves corresponding to the plurality of connecting protrusions are arranged on the side walls at both ends of the scale inhibition container, so that any two scale inhibition containers can be mutually embedded through the connecting protrusions and the connecting grooves at any one end thereof.

[0012] A scale inhibitor filter rod for an electric water heater inner tank as described above, wherein a buckle hole is provided on the connecting protrusion, and a corresponding buckle protrusion that can be connected in cooperation with the buckle hole is provided on the connecting groove.

[0013] A scale inhibitor filter rod for an electric water heater inner tank as described above, wherein connection notches are respectively provided on both sides of the upper end of the connecting protrusion, and limiting parts that cooperate with the connection notches to prevent the buckle hole and the buckle protrusion from becoming loose are respectively provided on both sides of the lower end of the connecting groove.

[0014] A scale inhibitor filter rod for an electric water heater inner tank as described above, wherein the fixing device includes a connecting bolt with a bolt head fixedly connected to the installation part inside the scale inhibitor container. The screw rod of the connecting bolt extends out of the scale inhibitor container and is connected to a fixing nut located outside the installation part. The lower end of the screw rod of the connecting bolt is also connected to a drain nut that serves as a sewage discharge switch for the electric water heater inner tank and also serves as a mounting seat for the scale inhibitor device. A water stop pad for sealing with the electric water heater inner tank is provided on the drain nut.

[0015] A scale inhibitor filter rod for an electric water heater inner tank as described above, a through groove communicating with the connecting grooves at both ends is provided along the length direction of the scale inhibitor container, and a plurality of first hollow holes for increasing the water contact area are provided on the through groove.

[0016] A scale inhibitor filter rod for an electric water heater inner tank as described above, the installation part includes a surrounding edge provided inside the scale inhibitor container to prevent the bolt head of the connecting bolt from rotating, and buckle parts that can be used to buckle the bolt head of the connecting bolt are symmetrically provided on both sides of the surrounding edge.

[0017] A scale inhibitor filter rod for an electric water heater inner tank as described above, a mounting hole is provided on the installation part, and a blocking piece for preventing the scale inhibitor material from flowing out of the scale inhibitor container is provided at the center of the mounting hole and is connected to it through a plurality of first connecting ribs. When the scale inhibitor container needs to be connected to the fixing device, the blocking piece at the center of the mounting hole can be removed to facilitate the fixing device to pass through and connect with it.

[0018] A scale inhibitor filter rod for an electric water heater inner tank as described above, a plurality of second hollow holes are uniformly provided along the outer wall of the scale inhibitor container.

[0019] A scale inhibitor filter rod for an electric water heater inner tank as described above, a plurality of transverse hollow grooves are uniformly provided along the length direction of the scale inhibitor container.

[0020] Compared with the prior art, the present utility model has the following advantages:

[0021] 1. The splicing structure of the scale inhibitor container enables the scale inhibitor device to assemble and stack multiple scale inhibitor containers using the same scale inhibitor container, thus adapting to different inner container capacities and meeting the requirements for different loading amounts of scale inhibitor materials. At the same time, the same scale inhibitor container can greatly reduce the types of materials, improve material versatility, and reduce mold costs.

[0022] 2. The scale inhibitor container is provided with multiple hollow holes and hollow grooves, which increase the surface area and water flow channels, promote the contact and exchange between water and the scale inhibitor material, and enhance the scale inhibition effect.

[0023] 3. The scale inhibitor container is provided with a surrounding edge to prevent the connecting bolt from rotating, which facilitates the fixed connection by driving the bolt through the scale inhibitor container. At the same time, the scale inhibitor container is also provided with a buckle part for buckling the bolt head. Once buckled, the bolt can be fixed to achieve convenient assembly.

[0024] 4. Structures such as connecting protrusions, connecting grooves, and buckle holes are provided at both ends of the scale inhibitor container, which increases the stability and reliability of the connection between multiple scale inhibitor containers and reduces the risk of loosening and falling off.

Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments.

[0027] Figure 1 Schematic three-dimensional structure of this embodiment Figure 1 ;

[0028] Figure 2 Schematic three-dimensional structure of this embodiment Figure 2 ;

[0029] Figure 3 Schematic three-dimensional exploded structure diagram of this embodiment;

[0030] Figure 4 For Figure 3 Enlarged schematic diagram of part A in

[0031] Figure 5 Schematic connection diagram of the scale inhibitor container and the fixing device in this embodiment;

[0032] Figure 6 For Figure 3 Cross-sectional schematic diagram along B-B in

[0033] Figure 7 Schematic three-dimensional structure of the scale inhibitor container in this embodiment Figure 1 ;

[0034] Figure 8 Schematic three-dimensional structure of the scale inhibitor container in this embodiment Figure 2 ;

[0035] Figure 9 Schematic three-dimensional structure of the scale inhibitor container in this embodiment Figure 3 .

Detailed implementation manners

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by this application clearer and more understandable, the following further elaborates on this application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0038] This embodiment provides a scale inhibitor filter rod for an electric water heater inner tank, aiming to solve the problems such as single applicability and insufficient installation stability with the inner tank of the water heater in the prior art. Please refer to Figures 1 to 9 , a scale inhibitor filter rod for an electric water heater inner tank, includes a fixing device 1, the fixing device 1 is connected with a scale inhibitor device 2, the scale inhibitor device 2 includes at least two scale inhibitor containers 21 for loading scale inhibitor materials, both ends of the scale inhibitor container 21 are respectively provided with splicing structures 22 that can assemble and stack two scale inhibitor containers 21, and any one end of the scale inhibitor container 21 is also provided with an installation part 23 that can be connected and fixed with the fixing device 1.

[0039] In this embodiment, by using at least two scale inhibitor containers 21, the loading amount of the scale inhibitor material can be increased, thereby improving the scale inhibition effect. The splicing structure 22 of the scale inhibitor container 21 enables the scale inhibitor device 2 to be assembled and stacked, thus saving space and also adapting to different inner tank capacities and meeting different requirements for the loading amount of the scale inhibitor material.

[0040] The installation part 23 of the scale inhibitor container 21 can be provided at any one of the two ends, which means that any one scale inhibitor container 21 can be installed in the inner tank of the electric water heater through the cooperation of the installation part 23 and the fixing device 1. At the same time, the other end of the scale inhibitor container 21 connected to the fixing device 1 can be spliced with other sections of the scale inhibitor container 21, as long as it is ensured that the end of the last spliced scale inhibitor container 21 with the installation part is the upper end. In this embodiment, the splicing structure 22 for connecting multiple scale inhibitor containers 21 can be a threaded connection structure, a plug-in connection structure, a snap connection structure, etc.; the installation part 23 for the cooperation connection between the scale inhibitor container 21 and the fixing device 1 can also correspond to the specific structure of the fixing device 1, and select to adopt corresponding threaded connection structures, plug-in connection structures, snap connection structures, etc. or a combination form of multiple connection structures.

[0041] Further, as a preferred implementation manner rather than a limitation of this solution, the splicing structure 22 includes a plurality of connecting protrusions 221 respectively provided at both ends of the scale inhibitor container 21, and connecting grooves 222 provided on the side walls at both ends of the scale inhibitor container 21 corresponding to the plurality of connecting protrusions 221, so that any two of the scale inhibitor containers 21 can be mutually engaged through the connecting protrusions 221 and the connecting grooves 222 at any one end thereof.

[0042] In this embodiment, by providing a plurality of connecting protrusions 221 and connecting grooves 222 at both ends of the scale inhibitor container 21, the stability and reliability of the connection between the scale inhibitor containers 21 can be increased. The mutual engagement of the plurality of connecting protrusions 221 and connecting grooves 222 can provide a larger contact area and friction force, thereby reducing the risk of loosening and falling off of the scale inhibitor container 21 during use. The connecting protrusions 221 can be designed as cylindrical, conical or wedge-shaped, etc., and the connecting grooves 222 can be designed in a shape matching the connecting protrusions 221.

[0043] Through the mutual engagement of the connecting protrusions 221 and the connecting grooves 222, the scale inhibitor containers 21 can be conveniently assembled and disassembled. When it is necessary to replace or maintain the scale inhibitor container 21, it is only necessary to take out or insert the connecting protrusion 221 from the connecting groove 222.

[0044] Further, as a preferred implementation manner rather than a limitation of this solution, a snap hole 2211 is provided on the connecting protrusion 221, and a corresponding snap protrusion 2221 that can be connected in cooperation with the snap hole 2211 is provided on the connecting groove 222.

[0045] In this embodiment, when the connecting protrusion 221 of the scale inhibitor container 21 is inserted into the connecting groove 222, the snap protrusion 2221 will be aligned with the snap hole 2211 and inserted therein to achieve the snap connection between the scale inhibitor containers 21. The design of the snap connection can provide greater connection strength and reliability, and at the same time can also achieve rapid assembly and disassembly. Through the cooperative connection of the snap hole 2211 and the snap protrusion 2221, the firm fixation and sealing between the scale inhibitor containers 21 can be achieved, improving the connection strength and reliability, and reducing the risk of loosening and leakage of the scale inhibitor material of the scale inhibitor container 21 during use.

[0046] Further, as a preferred implementation manner rather than a limitation of this solution, connection notches 2212 are respectively provided on both sides of the upper end of the connecting protrusion 221, and limiting portions 2222 that cooperate with the connection notches 2212 to prevent the snap hole 2211 and the snap protrusion 2221 from being loosened are respectively provided on both sides of the lower end of the connecting groove 222.

[0047] In this embodiment, through the cooperation of the connecting notch 2212 and the limiting portion 2222, the connection stability and reliability between the scale inhibitor containers 21 can be further increased, preventing the snap connection from loosening during use, thereby improving the overall performance and service life of the scale inhibitor filter rod, and indirectly ensuring the effective utilization of the scale inhibitor material and the stability of water quality.

[0048] Further, as a preferred implementation manner rather than a limitation of this solution, the fixing device 1 includes a connecting bolt 11 with a bolt head fixedly connected to the mounting portion 23 inside the scale inhibitor container 21. The screw of the connecting bolt 11 extends out of the scale inhibitor container 21 and is connected to a fixing nut 12 located outside the mounting portion 23. The lower end of the screw of the connecting bolt 11 is also connected to a drain nut 13 that serves as a sewage discharge switch for the water heater inner tank and also serves as the mounting seat of the scale inhibitor device 2. A water stop pad 131 for sealing with the water heater inner tank is provided on the drain nut 13.

[0049] In this embodiment, by tightening the fixing nut 12, the connecting bolt 11 can be firmly connected to the scale inhibitor device 2 in cooperation with the mounting portion 23 of the scale inhibitor container 21. The lower end of the connecting bolt 11 is then threadedly connected to the drain nut 13, realizing the convenient installation and fixation of the fixing device 1 and the scale inhibitor device 2.

[0050] In addition, the drain nut 13 also has the function of a sewage discharge switch, facilitating the user to perform the sewage discharge operation of the water heater inner tank, keeping the inner tank clean and the water quality good. The water stop pad 131 on the drain nut 13 can seal with the water heater inner tank to prevent water leakage.

[0051] In summary, when it is necessary to disassemble the fixing device 1 to replace the scale inhibitor container 21 or perform a sewage discharge operation, only the corresponding nut needs to be unscrewed, and the operation is simple and convenient.

[0052] Further, as a preferred implementation manner rather than a limitation of this solution, a through groove 211 communicating with the connecting grooves 222 at both ends of the scale inhibitor container 21 is provided along the length direction of the scale inhibitor container 21. A plurality of first hollow holes 2111 for increasing the water contact area are provided on the through groove 211.

[0053] In this embodiment, the through groove 211 can increase the water flow through area and improve the contact efficiency between water and the scale inhibitor material, thereby enhancing the scale inhibition effect. A plurality of first hollow holes 2111 are provided on the through groove 211. Specifically, the first hollow holes 2111 can be circular, elliptical, rectangular, triangular, or other special shapes, etc., which can further increase the contact area between water and the scale inhibitor material. In this embodiment, it is preferably circular. The circular hole structure can provide uniform water distribution, ensuring full contact between the scale inhibitor material and water, thereby improving the uniformity and stability of the scale inhibition effect.

[0054] Further, as a preferred implementation manner rather than a limitation of this solution, the installation part 23 includes a surrounding edge 231 provided in the scale inhibitor container 21 for preventing the head of the connecting bolt 11 from rotating, and buckle parts 232 symmetrically arranged on both sides of the surrounding edge 231 for buckling the head of the connecting bolt 11.

[0055] In this embodiment, the surrounding edge 231 can be designed into a shape matching the head of the connecting bolt 11 to limit its rotation, thereby preventing the connecting bolt 11 from loosening during use, improving the stability and reliability of the scale inhibitor device 2 in the electric water heater inner tank. At the same time, the buckle parts 232 further increase the connection strength between the connecting bolt 11 and the scale inhibitor container 21 and provide an additional anti-loosening function. This can further improve the stability of the scale inhibitor device 2 in the electric water heater inner tank.

[0056] Further, as a preferred implementation manner rather than a limitation of this solution, an installation hole 233 is provided on the installation part 23, and a blocking piece 2332 for preventing the scale inhibitor material from flowing out of the scale inhibitor container 21 is provided at the center of the installation hole 233 and is connected to it through a plurality of first connecting ribs 2331. When the scale inhibitor container 21 needs to be connected to the fixing device 1, the blocking piece 2332 at the center of the installation hole 233 can be removed to facilitate the fixing device 1 to pass through and connect with it.

[0057] In this embodiment, the blocking piece 2332 can effectively prevent the scale inhibitor material from leaking through the installation hole 233, avoiding the waste of the scale inhibitor material and the pollution of the electric water heater inner tank. Specifically, when the scale inhibitor container 21 is the uppermost section among all the scale inhibitor containers 21 that are spliced into the entire scale inhibitor device 2, the end of the uppermost scale inhibitor container 21 with the installation part 23 is used as the upper end, and the blocking piece is not removed to prevent the scale inhibitor material from leaking into the electric water heater inner tank; when the scale inhibitor container 21 is the next lower section and is connected to the fixing device 1, the end with the installation part 23 is used as the lower end, and the blocking piece 2332 is removed to facilitate the fixing device 1 to pass through the installation hole 233 and connect with it. Specifically, it facilitates the screw rod of the connecting bolt 11 in the above embodiment to extend out of the scale inhibitor container 21 from the installation hole 233.

[0058] It should be further noted that the scale inhibitor container connected to the fixing device and the subsequent stacked scale inhibitor containers with blocking pieces are the same materials produced by the same processing die, which greatly reduces the number of dies and the types of materials in production and manufacturing, reduces the die cost and improves the universality of the materials. Therefore, in practical applications, only by stacking and assembling a same type of scale inhibitor container can meet the use requirements of electric water heater inner tanks with various different capacities.

[0059] Further, as a preferred embodiment of this solution rather than a limitation, a plurality of second hollow holes 212 are uniformly provided along the outer wall of the scale inhibitor container 21. These second hollow holes 212 can increase the surface area of the scale inhibitor container 21 and provide additional water flow channels to promote the contact and exchange between water and the scale inhibitor material, thereby enhancing the scale inhibition effect and reducing the formation and deposition of scale in the inner tank of the electric water heater.

[0060] Further, as a preferred embodiment of this solution rather than a limitation, a plurality of transverse hollow grooves 213 are uniformly provided along the length direction of the scale inhibitor container 21. A second connecting rib 2131 is provided in the middle of the transverse hollow groove 213 to divide the groove into two parts.

[0061] In this embodiment, by providing the transverse hollow grooves 213, the surface area inside the scale inhibitor container 21 can be increased and additional water flow channels can be provided to improve the contact and exchange efficiency between water and the scale inhibitor material, thereby enhancing the scale inhibition effect and reducing the formation and deposition of scale.

[0062] The second connecting rib 2131 on the transverse hollow groove 213 can increase the structural strength of the scale inhibitor container 21 and ensure the stability and reliability of the transverse hollow groove 213, ultimately improving the durability and reliability of the scale inhibitor filter rod during use. In addition, in the production and processing of the scale inhibitor container 21, the design of the transverse hollow groove 213 is conducive to the demolding of the corresponding processing mold, improving the production efficiency.

[0063] Furthermore, as a preferred embodiment of this solution rather than a limitation, the material of the scale inhibitor container 21 is hydrolysis-resistant plastic, preferably materials such as polypropylene, random copolymer polypropylene, hydrolysis-resistant modified nylon, polyoxymethylene, polybutylene terephthalate, etc. The hydrolysis-resistant plastic has good high-temperature resistance and high-pressure resistance, can adapt to the high-temperature and high-pressure working environment of the inner tank of the electric water heater, can improve the durability and reliability of the scale inhibitor filter rod in the inner tank of the electric water heater, extend the service life, and reduce the maintenance cost.

[0064] The working principle of the present utility model is as follows:

[0065] This embodiment provides a scale inhibitor filter rod for the inner tank of an electric water heater, including a fixing device and a scale inhibitor device. The scale inhibitor device includes at least two scale inhibitor containers for loading scale inhibitor materials. Splicing structures are provided at both ends of the scale inhibitor containers so that they can be assembled and stacked. An installation part is also provided at any one end of the scale inhibitor container for connecting and fixing with the fixing device.

[0066] By using at least two scale inhibitor containers, the loading amount of the scale inhibitor material can be increased, thereby improving the scale inhibition effect. The built-in scale inhibitor material can fully contact the flowing water, playing a role in purifying the water quality and reducing the formation and deposition of scale.

[0067] The splicing structure and installation part design at both ends of the scale inhibitor container enable the scale inhibitor device 2 to be assembled and stacked, thus saving space and also adapting to different inner tank capacities and meeting the requirements for different loading amounts of scale inhibitor materials.

[0068] By providing a plurality of connecting protrusions and connecting grooves at both ends of the scale inhibitor container, the connection stability and reliability between the scale inhibitor containers can be increased, and the risks of loosening and falling off can be reduced.

[0069] The connecting protrusion is provided with a snap hole, and the connecting groove is provided with a snap protrusion to achieve snap connection between the scale inhibitor containers, improving the connection strength and reliability between multiple scale inhibitor containers.

[0070] Both sides of the upper end of the connecting protrusion are provided with connecting notches, and both sides of the lower end of the connecting groove are provided with limiting parts to prevent the snap connection from loosening and increase the connection stability.

[0071] The fixing device includes a connecting bolt, a fixing nut and a sewage draining nut, which are used to fix the scale inhibitor device in the inner tank and facilitate the sewage draining operation.

[0072] The scale inhibitor container is provided with a through groove to increase the water flow through area, improve the contact efficiency between water and the scale inhibitor material, and enhance the scale inhibition effect.

[0073] The installation part includes a surrounding edge and a snap part, which are used to fix the connecting bolt and increase the connection stability. A blocking piece is provided on its upper part to prevent the scale inhibitor material from leaking, avoiding waste and pollution. When the blocking piece is removed, the installation hole on the blocking container installation part is opened, and it can be used as a hole for the connecting bolt to pass through the container and connect with the sewage draining nut.

[0074] A plurality of hollow holes and hollow grooves are provided on the outer wall and inside of the scale inhibitor container to increase the surface area and water flow channels, promote the contact and exchange between water and the scale inhibitor material, and enhance the scale inhibition effect.

[0075] The material of the scale inhibitor container is hydrolysis-resistant plastic, which has good high-temperature resistance and high-pressure resistance and is suitable for the working environment of the electric water heater inner tank.

[0076] In summary, the scale inhibitor filter rod for the electric water heater inner tank provided in this embodiment optimizes the applicability, scale inhibition effect, connection stability and use convenience through various designs, and is suitable for scale inhibition treatment of household or industrial electric water heater inner tanks in various scenarios.

Claims

1. A scale-inhibiting filter rod for an electric water heater inner tank, comprising a fixing device (1), wherein the fixing device (1) is connected to a scale-inhibiting device (2), characterized in that: The scale inhibition device (2) comprises at least two scale inhibition containers (21) for loading scale inhibition materials, and both ends of the scale inhibition container (21) are respectively provided with a splicing structure (22) that enables the two scale inhibition containers (21) to be assembled and stacked, and any end of the scale inhibition container (21) is also provided with a mounting portion (23) that can be connected and fixed to the fixing device (1).

2. The scale-inhibiting filter rod for the inner tank of an electric water heater according to claim 1, characterized in that: The splicing structure (22) comprises a plurality of connecting protrusions (221) respectively provided at both ends of the scale inhibition container (21), and connecting grooves (222) corresponding to the plurality of connecting protrusions (221) provided on the side walls at both ends of the scale inhibition container (21), so that any two of the scale inhibition containers (21) can be mutually engaged through the connecting protrusions (221) and the connecting grooves (222) at either end thereof.

3. The scale-inhibiting filter rod for the inner tank of an electric water heater according to claim 2, characterized in that: The connecting protrusion (221) is provided with a buckle hole (2211), and the connecting groove (222) is provided with a corresponding buckle protrusion (2221) that can be matched and connected with the buckle hole (2211).

4. The scale-inhibiting filter rod for the inner tank of an electric water heater according to claim 3, characterized in that: The upper ends of the connecting protrusions (221) are provided with connecting notches (2212) on both sides, and the lower ends of the connecting grooves (222) are provided with limiting portions (2222) that cooperate with the connecting notches (2212) to prevent the buckle holes (2211) from being loosened from the buckle protrusions (2221).

5. The scale-inhibiting filter rod for the inner tank of an electric water heater according to claim 1, characterized in that: The fixing device (1) comprises a connecting bolt (11) whose bolt head is located in the scale inhibition container (21) and is fixedly connected to the mounting portion (23); a screw rod of the connecting bolt (11) extends from the scale inhibition container (21) and is connected to a fixing nut (12) located outside the mounting portion (23); a drain nut (13) serving as a drain switch for the inner tank of the water heater and also serving as a mounting seat for the scale inhibition device (2) is also connected to the lower end of the screw rod of the connecting bolt (11); a water stop pad (131) for sealing with the inner tank of the water heater is provided on the drain nut (13).

6. The scale-inhibiting filter rod for the inner tank of an electric water heater according to claim 2, characterized in that: A through groove (211) is provided along the length direction of the scale inhibition container (21) to communicate with the connection grooves (222) at both ends thereof, and the through groove (211) is provided with a plurality of first hollow holes (2111) for increasing the water contact area.

7. The scale-inhibiting filter rod for the inner tank of an electric water heater according to claim 5, characterized in that: The mounting portion (23) comprises a peripheral edge (231) disposed in the scale inhibition container (21) for preventing the bolt head of the connecting bolt (11) from rotating, and buckle portions (232) for buckling the bolt head of the connecting bolt (11) are symmetrically disposed on both sides of the peripheral edge (231).

8. The scale-inhibiting filter rod for the inner tank of an electric water heater according to claim 1, characterized in that: The mounting portion (23) is provided with a mounting hole (233), and a blocking sheet (2332) connected to the mounting hole (233) via a plurality of first connecting ribs (2331) is provided at the center of the mounting hole (233) for preventing the scale inhibition material from flowing out of the scale inhibition container (21). When the scale inhibition container (21) needs to be connected to the fixing device (1), the blocking sheet (2332) at the center of the mounting hole (233) can be removed to facilitate the fixing device (1) to pass through and connect with the fixing device (1).

9. The scale-inhibiting filter rod for the inner tank of an electric water heater according to claim 6, characterized in that: A plurality of second hollow holes (212) are evenly arranged along the outer wall of the scale inhibition container (21).

10. The scale-inhibiting filter rod for the inner tank of an electric water heater according to claim 7, characterized in that: A plurality of transverse hollow grooves (213) are evenly arranged along the length direction of the scale inhibition container (21).

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