An easy-to-install expansion tank

By improving the structural design of the expansion tank and utilizing components such as connecting blocks and sliding blocks, tool-free installation of the upper and lower tanks is achieved, solving the problem of cumbersome installation of existing expansion tanks and improving installation efficiency and maintenance convenience.

CN224428697UActive Publication Date: 2026-06-30SHANDONG ZHILIN ENVIRONMENTAL PROTECTION TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG ZHILIN ENVIRONMENTAL PROTECTION TECH CO LTD
Filing Date
2025-09-03
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The existing expansion tank requires tools to install multiple bolts during assembly, which is cumbersome and time-consuming, resulting in inconvenient installation.

Method used

The structure employs connecting blocks, movable inserts, sliding blocks, and bidirectional screws, allowing the upper and lower housings to be fixed by sliding insertion and rotating screws, eliminating the need for tool installation and simplifying the operation process.

Benefits of technology

It enables quick installation of the upper and lower enclosures, saving operation time, and the design of limit blocks and springs facilitates the disassembly and assembly of the protective enclosure, improving maintenance convenience.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224428697U_ABST
    Figure CN224428697U_ABST
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Abstract

This utility model belongs to the field of expansion tank technology, specifically relating to an easy-to-install expansion tank, including an upper tank body. A lower tank body is connected to the bottom surface of the upper tank body, and connecting blocks are connected to both ends of the bottom surface of the upper tank body. One end of each connecting block extends into a connecting groove, which is located on the top surface of two protrusions. The protrusions are connected to the two ends of the top surface of the lower tank body. This utility model allows the connecting blocks at both ends of the upper tank body to be slidably inserted into the connecting grooves of the protrusions at both ends of the lower tank body. Then, by rotating a bidirectional screw, a sliding block on the bidirectional screw causes a movable insert to move within a movable groove. At this point, one end of the movable insert can be inserted into a slot on the connecting block, fixing the connecting block to the protrusion and thus securing the upper and lower tank bodies together. This eliminates the need for tools during installation, saving time and providing convenience for the installation of the expansion tank.
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Description

Technical Field

[0001] This utility model belongs to the field of expansion tank technology, specifically relating to an expansion tank that is easy to install. Background Technology

[0002] An expansion tank is a device used in hot or cold water systems. Its main function is to compensate for changes in the volume of liquid in the system to avoid overpressure or underpressure caused by temperature changes.

[0003] For example, the expansion tank disclosed in publication number "CN220185223U" relates to the field of expansion tank technology. This expansion tank includes an upper tank and a lower tank, which are connected by a connecting mechanism. The upper and lower tanks are hinged together by a pin. The connecting mechanism includes multiple connecting blocks, which are distributed on the upper and lower tanks respectively. Each set of connecting blocks is detachably connected by bolts. The expansion tank has an internal reinforcing mechanism composed of multiple mutually perpendicular vertical and horizontal reinforcing ribs. By removing the bolts between each set of connecting blocks, the upper tank can be opened around the top of the lower tank, thus opening the interior of the expansion tank for easy cleaning and maintenance. Furthermore, the vertical and horizontal reinforcing ribs effectively improve the pressure-bearing capacity of the expansion tank.

[0004] The inventors believe that when assembling the expansion tank, the upper and lower tanks require tools to install and fix multiple bolts to secure them together. This process is cumbersome and time-consuming, causing inconvenience to the installation of the expansion tank.

[0005] Therefore, this utility model provides an expansion tank that is easy to install in order to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide an expansion tank that is easy to install, in order to solve the problem that in the existing technology, when assembling the expansion tank, multiple bolts need to be installed and fixed with tools to secure the upper and lower tanks together, which is cumbersome and time-consuming, thus causing inconvenience to the installation of the expansion tank.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an expansion tank that is easy to install, comprising an upper tank body, a lower tank body connected to the bottom surface of the upper tank body, and connecting blocks connected to both ends of the bottom end of the upper tank body. One end of the connecting block extends into a connecting groove, the connecting groove being formed on the top surface of both sides of a protrusion. The protrusion is connected to both ends of the top end of the lower tank body. A through slot is formed on one side surface of the connecting block, and one end of a movable insert is connected to the inner surface of the slot. The other end of the movable insert extends into a movable groove, the movable groove being formed inside both ends of the protrusion. A sliding block is connected to the front end surface of the movable insert at one end of the movable groove. An electronic level gauge is connected to the top surface of the upper tank body.

[0008] In order to enable the movement of the sliding block, as a preferred embodiment of the expansion tank of this utility model that is easy to install, a groove is provided on the front surface of the protrusion, bearings are embedded on both sides of the inner surface of the groove, a bidirectional screw is connected between the two bearings, and the sliding block is threaded through both ends of the bidirectional screw.

[0009] To facilitate the rotation of the bidirectional screw, as a preferred embodiment of this utility model for an expansion tank that is easy to install, one end of the bidirectional screw passes through one side surface of the protrusion and is connected to the rotating block.

[0010] In order to enable the movable insert to move, as a preferred embodiment of the expansion tank of this utility model that is easy to install, the position of the movable groove is connected to the position of the sliding groove, and the movable insert is slidably connected to the protrusion through the movable groove.

[0011] To facilitate the assembly and disassembly of the protective box, as a preferred embodiment of this utility model for easy installation of an expansion tank, a mounting block is connected to the top surface of the upper casing outside the electronic level gauge. A placement groove is provided on the top surface of the mounting block, and one end of the protective box is connected to the inner surface of the placement groove. A limit hole is provided on one side surface at the bottom of the protective box, and one end of a limit plug is connected to the inner surface of the limit hole.

[0012] In order to achieve the elastic telescopic movement of the limiting plug, as a preferred embodiment of the expansion tank of this utility model that is easy to install, the other end of the limiting plug passes through the shell, the shell is connected to one side surface of the mounting block, and a spring through which the limiting plug passes is provided inside the shell, and a pulling block is connected to the surface of the end of the limiting plug that passes through the shell.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention involves sliding the connecting blocks at both ends of the upper tank into the connecting grooves of the protrusions at both ends of the lower tank. Then, by rotating the bidirectional screw, the sliding block on the bidirectional screw drives the movable insert to move within the movable groove. At this point, one end of the movable insert can be inserted into the slot on the connecting block, fixing the connecting block to the protrusion and thus fixing the upper and lower tanks together. This eliminates the need for operators to use tools for installation, saving operation time and bringing convenience to the installation of expansion tanks.

[0015] This utility model, through the setting of a limiting plug, allows the operator to simply push the pull block, which in turn causes the limiting plug to squeeze the spring within the housing, thus separating one end of the limiting plug from the limiting hole on the protective box. This allows the protective box to be separated from the placement groove on the mounting block, making it easy for the operator to disassemble and assemble the protective box, and bringing convenience to the maintenance of the electronic level gauge inside the protective box. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This is a partial cross-sectional exploded view of the protrusion of this utility model.

[0020] Figure 4 This is a schematic diagram of a partial explosion at the mounting block of this utility model.

[0021] In the diagram: 1. Upper housing; 2. Lower housing; 3. Connecting block; 4. Connecting groove; 5. Protrusion; 6. Slot; 7. Movable insert block; 8. Movable groove; 9. Sliding block; 10. Slide groove; 11. Bearing; 12. Bidirectional screw; 13. Rotating block; 14. Electronic level gauge; 15. Mounting block; 16. Placement groove; 17. Protective box; 18. Limiting hole; 19. Limiting insert block; 20. Housing; 21. Spring; 22. Pulling block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 The present invention provides the following technical solution: an expansion tank that is easy to install, comprising an upper tank body 1, a lower tank body 2 connected to the bottom surface of the upper tank body 1, and connecting blocks 3 connected to both ends of the bottom end of the upper tank body 1. One end of the connecting block 3 extends into a connecting groove 4. The connecting groove 4 is opened on the top surface of both sides of the protrusion 5. The protrusion 5 is connected to both ends of the top end of the lower tank body 2. A through slot 6 is opened on one side surface of the connecting block 3. One end of a movable insert 7 is connected to the inner surface of the slot 6. The other end of the movable insert 7 extends into a movable groove 8. The movable groove 8 is opened inside both ends of the protrusion 5. A sliding block 9 is connected to the front end surface of the movable insert 7 at one end of the movable groove 8. An electronic level gauge 14 is connected to the top surface of the upper tank body 1. The electronic level gauge 14 is a UGL-100 level gauge.

[0024] The bottom surface of the upper housing 1 is provided with a sealing ring, while the top surface of the lower housing 2 is provided with a sealing groove that matches the position of the sealing ring. When the bottom surface of the upper housing 1 comes into contact with the top surface of the lower housing 2, the sealing ring will move and engage in the sealing groove, thereby ensuring the sealing between the upper housing 1 and the lower housing 2.

[0025] Preferably, a groove 10 is provided on the front surface of the protrusion 5, and bearings 11 are embedded on both sides of the inner surface of the groove 10. A bidirectional screw 12 is connected between the two bearings 11, and the two ends of the bidirectional screw 12 are threadedly connected to the sliding block 9.

[0026] In practical use, when the bidirectional screw 12 rotates in the bearing 11, the sliding block 9 on the bidirectional screw 12 will move along the slide groove 10 on the protrusion 5.

[0027] Preferably, one end of the bidirectional screw 12 passes through one side surface of the protrusion 5 and is connected to the rotating block 13.

[0028] In practical use, by turning the rotating block 13, the rotating block 13 can drive the bidirectional screw 12 to rotate in the bearing 11.

[0029] Preferably, the position of the movable groove 8 is connected to the position of the sliding groove 10, and the movable insert 7 is slidably connected to the protrusion 5 through the movable groove 8.

[0030] In practical use, when the sliding block 9 moves, it will drive the movable insert 7 to move within the movable slot 8.

[0031] Preferably, an installation block 15 is connected to the top surface of the upper housing 1 outside the electronic level gauge 14. A placement groove 16 is opened on the top surface of the installation block 15. One end of the protective box 17 is connected to the inner surface of the placement groove 16. A limit hole 18 is opened on one side surface at the bottom of the protective box 17. One end of the limit plug 19 is connected to the inner surface of the limit hole 18.

[0032] In practical use, the protective box 17 can be slidably placed into the placement groove 16 on the mounting block 15 so that the protective box 17 can shield and protect the electronic level gauge 14. Then, one end of the limiting plug 19 is inserted into the limiting hole 18 to fix the position of the protective box 17 on the mounting block 15.

[0033] Preferably, the other end of the limiting plug 19 passes through the housing 20, the housing 20 is connected to one side surface of the mounting block 15, and the housing 20 is provided with a spring 21 that is passed through by the limiting plug 19, and a pulling block 22 is connected to one end surface of the limiting plug 19 that passes through the housing 20.

[0034] In practical use, when the limiting plug 19 slides inside the housing 20, the limiting plug 19 will elastically extend and retract on the housing 20 through the spring 21, and move by driving the pulling block 22 to move, so that the limiting plug 19 can move.

[0035] Working Principle: When using this easy-to-install expansion tank, to install the upper tank 1 and lower tank 2, slide the connecting blocks 3 at both ends of the upper tank 1 into the connecting grooves 4 on the protrusions 5 at both ends of the lower tank 2. At this point, the bottom surface of the upper tank 1 will contact the bottom surface of the lower tank 2. Then, turn the rotating block 13, causing it to drive the double-acting screw 12 to rotate within the bearing 11. This allows the sliding block 9 on the double-acting screw 12 to move along the sliding groove 10 on the protrusion 5. During this movement, the sliding block 9 will drive the movable insert 7 to move within the movable groove 8, allowing one end of the movable insert 7 to insert into the slot 6 on the connecting block 3. The connecting block 3 will then be fixed in the connecting groove 4 on the protrusion 5. Thus, the upper tank 1 and lower tank 2 can be installed and fixed together. This design avoids the need for tools to install the upper tank 1 and lower tank 2, saving operation time and improving the expansion efficiency. The installation and operation of the expansion tank is convenient. Next, push the pull block 22, causing it to slide the limiting block 19 within the housing 20. This allows the limiting block 19 to compress the spring 21 within the housing 20, causing one end of the limiting block 19 to move out of the placement slot 16. Then, slide the protective box 17 into the placement slot 16 on the mounting block 15. Releasing the pull block 22 allows the spring 21 to elastically push the limiting block 19, allowing it to move further. One end of the protective box 17 is inserted into the limiting hole 18 on the protective box 17, allowing the protective box 17 to be easily installed on the mounting block 15. At this time, the mounting block 15 and the protective box 17 can shield and protect the electronic level gauge 14. When the electronic level gauge 14 needs to be exposed for maintenance, simply push the pull block 22 again, which will move the limiting insert 19, causing one end of the limiting insert 19 to separate from the limiting hole 18. The protective box 17 can then slide out into the placement slot 16 on the mounting block 15, allowing the protective box 17 to be quickly disassembled, exposing the electronic level gauge 14 for maintenance. This design facilitates the disassembly and assembly of the protective box 17, thus providing convenience for the maintenance of the electronic level gauge 14 inside the protective box 17.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. An expansion tank for ease of installation comprising an upper tank body (1) characterised in that: The bottom surface of the upper housing (1) is connected to the lower housing (2), and both ends of the bottom end of the upper housing (1) are connected to connecting blocks (3). One end of the connecting block (3) extends into the connecting groove (4). The connecting groove (4) is opened on the top surface of both sides of the protrusion (5). The protrusion (5) is connected to both ends of the top of the lower housing (2). One side surface of the connecting block (3) is provided with a through slot (6). One end of the movable plug (7) is connected to the inner surface of the slot (6). The other end of the movable plug (7) extends into the movable groove (8). The movable groove (8) is opened inside both ends of the protrusion (5). The front end surface of the movable plug (7) at one end of the movable groove (8) is connected to a sliding block (9). The top surface of the upper housing (1) is connected to an electronic level gauge (14).

2. The easy-to-install expansion tank of claim 1, wherein: The front surface of the protrusion (5) is provided with a groove (10), and bearings (11) are embedded on both sides of the groove (10). A bidirectional screw (12) is connected between the two bearings (11), and a sliding block (9) is threaded through both ends of the bidirectional screw (12).

3. The easily installable expansion tank according to claim 2, characterized in that: One end of the bidirectional screw (12) passes through one side surface of the protrusion (5) and is connected to the rotating block (13).

4. The easily installable expansion tank according to claim 1, characterized in that: The position of the movable groove (8) is connected to the position of the sliding groove (10), and the movable insert (7) is slidably connected to the protrusion (5) through the movable groove (8).

5. An expansion tank that is easy to install according to claim 1, characterized in that: An mounting block (15) is connected to the top surface of the upper housing (1) outside the electronic level gauge (14). A placement groove (16) is opened on the top surface of the mounting block (15). One end of a protective box (17) is connected to the inner surface of the placement groove (16). A limiting hole (18) is opened on one side surface at the bottom of the protective box (17). One end of a limiting plug (19) is connected to the inner surface of the limiting hole (18).

6. An easily installable expansion tank according to claim 5, characterized in that: The other end of the limiting plug (19) passes through the housing (20). The housing (20) is connected to one side surface of the mounting block (15), and the housing (20) is provided with a spring (21) that is passed through by the limiting plug (19). A pulling block (22) is connected to one end surface of the limiting plug (19) that passes through the housing (20).