Solar water heater positioning ring pressing device

Abstract

The utility model discloses a solar water heater positioning ring pressing device, which relates to the technical field of solar water heaters, and comprises a rack, a supporting structure is arranged at the lower part of the rack, the supporting structure is used for supporting a water tank shell, a pressing plate is arranged above the water tank shell, and a plurality of lifting mechanisms are arranged at the top of the pressing plate. The lifting mechanism is connected with the top of the rack, the pressing plate is covered with a pressing cover, the pressing cover is in vertical sliding fit with the lower portion of the lifting mechanism, an elastic piece is arranged in the pressing cover, the top of the elastic piece is connected with the lower portion of the lifting mechanism, and the bottom of the elastic piece is connected with the pressing cover. According to the utility model, the labor intensity of workers can be reduced and the mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar water heaters, and particularly relates to a positioning ring pressing device for a solar water heater. Background Art

[0002] A solar water heater includes a water tank, and the water tank includes an inner tank, a foamed heat insulation layer, and a water tank outer shell which are arranged in sequence from inside to outside. A row of mounting holes are provided on the water tank outer shell, and a positioning ring is press-fitted in the mounting holes. The positioning ring is used to realize the sealed connection between the water tank outer shell and the vacuum heat collecting tube.

[0003] Currently, when installing the positioning ring, first, workers need to put the positioning ring into the mounting hole, and at this time, the positioning ring has not completely entered the mounting hole; then, workers need to press the positioning ring forcefully to press the positioning ring completely into the mounting hole.

[0004] The above operation of manually installing the positioning ring not only increases the labor intensity of workers but also reduces the installation efficiency. Therefore, how to reduce the labor intensity of workers and improve the installation efficiency is a technical problem that needs to be solved currently. Summary of the Utility Model

[0005] Aiming at the above deficiencies of the existing technology, the utility model provides a positioning ring pressing device for a solar water heater, which can reduce the labor intensity of workers and improve the installation efficiency.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] A positioning ring pressing device for a solar water heater includes a frame. A supporting structure is provided at the lower part of the frame, and the supporting structure is used to support the water tank outer shell. A pressing plate is arranged above the water tank outer shell. A plurality of lifting mechanisms are provided at the top of the pressing plate, and the lifting mechanisms are connected to the top of the frame. A pressing cover is arranged outside the pressing plate, and the pressing cover is vertically slidably matched with the lower part of the lifting mechanism. An elastic member is arranged inside the pressing cover, the top of the elastic member is connected to the lower part of the lifting mechanism, and the bottom of the elastic member is connected to the pressing cover.

[0008] Further, two lifting mechanisms are arranged along the long side direction of the water tank outer shell.

[0009] Further, the lifting mechanism includes a driving member and a lifting rod. The driving member is used to drive the lifting rod to move up and down. The lifting rod is vertically slidably connected to the top of the frame. A first limiting plate and the pressing plate are arranged at the lower part of the lifting rod. The first limiting plate is arranged above the pressing plate. A through hole is provided at the top of the pressing cover, and the through hole is vertically slidably matched with the lifting rod. A second limiting plate is arranged on the inner wall of the pressing cover, and the second limiting plate is arranged between the first limiting plate and the pressing plate. The top of the elastic member is connected to the first limiting plate, and the bottom of the elastic member is connected to the second limiting plate.

[0010] Further, a guide rod is provided on the top surface of the second limiting plate. The guide rod penetrates upward through the top walls of the first limiting plate and the pressing cover. The top walls of the first limiting plate and the pressing cover are both vertically slidably connected to the guide rod. The elastic member is a spring, and the spring is sleeved on the guide rod.

[0011] Further, the frame includes a bottom frame, a top frame is provided above the bottom frame, two side frames arranged side by side are provided between the bottom frame and the top frame, the support structure is provided at the lower part of the side frame, the upper part of the lifting rod penetrates upward through the top frame, and the upper part of the lifting rod is vertically slidably connected to the top frame.

[0012] Further, a guide cylinder is provided on the top of the top frame. The upper part of the lifting rod penetrates upward through the guide cylinder, and the upper part of the lifting rod is vertically slidably connected to the guide cylinder.

[0013] Further, a stop block is provided in the middle of the lifting rod, and the stop block is used to abut against the bottom surface of the top frame.

[0014] Further, a limiting structure is provided on one or two of the side frames. The limiting structure includes a telescopic member and an end face baffle. The bottom of the telescopic member is rotatably connected to the bottom of the side frame, the top of the telescopic member is rotatably connected to the upper part of the end face baffle, the bottom of the end face baffle is rotatably connected to the support structure, and a groove is provided on the side of the end face baffle facing the water tank shell, and the groove is adapted to the end of the water tank shell.

[0015] Further, reinforcing ribs are provided on the top surface of the pressing plate, and the reinforcing ribs are connected to the bottom of the lifting rod.

[0016] Further, an extension plate bent outward is provided at the bottom of the pressing cover, and the extension plate is used to fit against the outer side wall of the water tank shell.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. In the present utility model, the lifting mechanism can drive the pressing plate to perform a pressing action. The pressing plate can simultaneously press the positioning rings inserted in all the mounting holes, realizing the synchronous press-fitting of all the positioning rings. Compared with the prior art, the operation of manual pressing by workers is omitted, which is beneficial to reducing the labor intensity of workers and improving the installation efficiency.

[0019] 2. By providing the pressing cover and the elastic member, when the lifting mechanism drives the pressing plate to perform a pressing action, the pressing cover can press the water tank shell, and moreover, the force of the pressing cover pressing the water tank shell gradually increases, preventing the water tank shell from shaking during the process of press-fitting the positioning ring, improving the stability of the water tank shell, and being beneficial to improving the stability and reliability of the press-fitting operation.

[0020] 3. The provision of the guiding cylinder can support the lifting rod, reduce the risk of deformation of the lifting rod in the length direction, and is conducive to improving the stability of the up-and-down movement of the lifting rod.

[0021] 4. By providing reinforcing ribs on the top surface of the pressing plate and connecting the reinforcing ribs to the lifting rod in the lifting mechanism, the strength of the pressing plate can be improved, the risk of deformation of the pressing plate can be reduced, and it is conducive to extending the service life of the pressing plate.

[0022] 5. By providing an extension plate at the bottom of the pressing cover, the pressing area when the pressing cover presses the water tank housing can be increased, which is conducive to further improving the stability of the press-fitted positioning ring.

[0023] 6. By providing a limiting structure, the stability of the water tank housing on the supporting structure can be improved, so that the accuracy and stability of the press-fitted positioning ring can be improved when press-fitting the positioning ring. Description of the Drawings

[0024] Figure 1 is the front view of a solar water heater positioning ring pressing device in Embodiment 1;

[0025] Figure 2 is the right view of a solar water heater positioning ring pressing device in Embodiment 1;

[0026] Figure 3 is the partial structural schematic diagram of a solar water heater positioning ring pressing device in Embodiment 1;

[0027] Figure 4 is the usage schematic of a solar water heater positioning ring pressing device in Embodiment 1 Figure 1 ;

[0028] Figure 5 is the usage schematic of a solar water heater positioning ring pressing device in Embodiment 1 Figure 2 ;

[0029] Figure 6 is the usage schematic of a solar water heater positioning ring pressing device in Embodiment 1 Figure 3 ;

[0030] Figure 7 is the front view of a solar water heater positioning ring pressing device in Embodiment 2;

[0031] Figure 8 is the partial structural schematic diagram of a solar water heater positioning ring pressing device in Embodiment 2.

[0032] Description of the Reference Numerals:

[0033] 11 - chassis, 12 - top frame, 121 - guiding cylinder, 13 - side frame, 131 - bottom beam,

[0034] 21 - Support beam

[0035] 3 - Water tank housing, 31 - Mounting hole

[0036] 4 - Pressing plate, 41 - Reinforcing rib

[0037] 5 - Positioning ring

[0038] 61 - Lifting rod, 611 - Stop block, 612 - First limiting plate

[0039] 7 - Pressing cover, 71 - Second limiting plate, 711 - Guide rod, 72 - Extension plate

[0040] 8 - Spring

[0041] 91 - Telescopic member, 92 - End face baffle, 93 - Groove Detailed implementation mode

[0042] To better understand the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings. It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0043] Embodiment 1:

[0044] See Figures 1 to 6 , a positioning ring pressing device for a solar water heater, including a frame. The frame includes a bottom frame 11, a top frame 12, and side frames 13. A top frame 12 is provided above the bottom frame 11, and two side frames 13 arranged side by side are provided between the bottom frame 11 and the top frame 12. The bottoms of the two side frames 13 are fixedly installed on the bottom frame 11, and the top frame 12 is fixedly installed on the tops of the two side frames 13.

[0045] See Figure 1 , support structures are provided at the lower parts of the two side frames 13. In this Embodiment 1, the support structure includes a support beam 21, and the support beam 21 is fixedly installed at the lower part of the side frame 13. The support beams 21 on the two side frames 13 are respectively used to support the two ends of the water tank housing 3. When the water tank housing 3 is placed on the support beam 21, a row of mounting holes 31 opened on the water tank housing 3 are arranged upward, and this row of mounting holes 31 is distributed along the long side direction of the water tank housing 3.

[0046] See Figure 1, above the water tank housing 3, there is a pressing plate 4, and the pressing plate 4 is used to simultaneously press the positioning rings 5 inserted in all the mounting holes 31. On the top of the pressing plate 4, there are several lifting mechanisms, and the lifting mechanisms are used to drive the pressing plate 4 to lift. In this Embodiment 1, two lifting mechanisms are provided along the long side direction of the water tank housing 3.

[0047] See Figure 1 , the lifting mechanism includes a driving member and a lifting rod 61. The driving member is used to drive the lifting rod 61 to move up and down. The driving member can be installed on the top of the top frame 12, and the driving member can also be installed on other nearby facilities. The driving member can adopt an oil cylinder, a cylinder, an electric push rod or other devices that can drive the lifting rod 61 to move up and down. The upper part of the lifting rod 61 vertically penetrates the top frame 12, the upper part of the lifting rod 61 is vertically slidably connected to the top frame 12, and the bottom of the lifting rod 61 is fixedly installed with the pressing plate 4.

[0048] For example, when the driving member adopts an oil cylinder, the oil cylinder can be fixedly installed on the top of the top frame 12, the piston rod of the oil cylinder is arranged upward, and the piston rod of the oil cylinder is fixedly connected to the top of the lifting rod 61. When the piston rod of the oil cylinder extends upward, the piston rod of the oil cylinder drives the lifting rod 61 to rise, and the lifting rod 61 drives the pressing plate 4 to rise; when the piston rod of the oil cylinder retracts downward, the piston rod of the oil cylinder drives the lifting rod 61 to move downward, and the lifting rod 61 drives the pressing plate 4 to move downward.

[0049] Because the pressing plate 4 needs to simultaneously press the positioning rings 5 inserted in all the mounting holes 31, the length of the pressing plate 4 needs to meet the distribution length of all the mounting holes 31 on the water tank housing 3, so that the length of the pressing plate 4 is relatively long. To prevent the pressing plate 4 from deflecting and deforming in the long side direction, see Figure 2 , on the top surface of the pressing plate 4, a reinforcing rib 41 is welded and fixed, and the reinforcing rib 41 is welded and fixed to the bottom of the lifting rod 61. The setting of the reinforcing rib 41 can improve the strength of the pressing plate 4, reduce the risk of deformation of the pressing plate 4, and then is beneficial to extending the service life of the pressing plate 4.

[0050] To improve the stability of the up and down movement of the lifting rod 61 and reduce the risk of deflection and deformation of the lifting rod 61, see Figure 1 , on the top of the top frame 12, a guide cylinder 121 is fixedly installed. The upper part of the lifting rod 61 penetrates upward into the inner cavity of the guide cylinder 121, and the upper part of the lifting rod 61 is vertically slidably matched with the inner cavity of the guide cylinder 121. The setting of the guide cylinder 121 can support the lifting rod 61, reduce the risk of deformation of the lifting rod 61, and is beneficial to improving the stability of the up and down movement of the lifting rod 61.

[0051] In addition, see Figure 1, a stop block 611 is fixedly installed in the middle of the lifting rod 61. The stop block 611 is used to abut against the bottom surface of the top frame 12. As the lifting rod 61 rises, the lifting rod 61 drives the stop block 611 to move upward together. When the stop block 611 on the lifting rod 61 abuts against the bottom surface of the top frame 12, the lifting rod 61 rises to the highest position. The pressing plate 4 located at the bottom of the lifting rod 61 has moved upward away from the water tank housing 3, and there is enough distance between the pressing plate 4 and the water tank housing 3 to allow the worker to insert the positioning ring 5 into the mounting hole 31 of the water tank housing 3, providing enough operating space for the worker to insert the positioning ring 5.

[0052] See Figure 3 , a pressing cover 7 is sleeved outside the pressing plate 4. A through hole is provided at the top of the pressing cover 7, and the through hole is in vertical sliding fit with the lifting rod 61. A first limiting plate 612 is fixedly installed at the lower part of the lifting rod 61. The first limiting plate 612 is located above the pressing plate 4. A second limiting plate 71 is fixedly installed on the inner wall of the pressing cover 7. The second limiting plate 71 is located between the first limiting plate 612 and the pressing plate 4. An elastic member is provided between the first limiting plate 612 and the second limiting plate 71. The elastic member can adopt a spring 8. The top of the spring 8 abuts against the bottom surface of the first limiting plate 612, and the bottom of the spring 8 abuts against the top surface of the second limiting plate 71.

[0053] See Figures 4 to 5 Regarding the state change, when the lifting rod 61 descends, the bottom of the pressing cover 7 first contacts the water tank housing 3. As the lifting rod 61 continues to move downward, the lifting rod 61 drives the first limiting plate 612 to move downward. The first limiting plate 612 approaches the second limiting plate 71 against the elastic force of the spring 8, causing the spring 8 to be compressed. The pushing force of the compressed spring 8 on the second limiting plate 71 increases. The second limiting plate 71 transmits the pushing force to the pressing cover 7, increasing the pressing force of the pressing cover 7 on the water tank housing 3. And at the same time, the pressing plate 4 moves downward close to the positioning ring 5 inserted in the mounting hole 31. As the lifting rod 61 continues to move downward, see Figure 6 , the pressing plate 4 simultaneously presses all the positioning rings 5 inserted in the mounting holes 31 completely into the mounting holes 31. During this process, the pressing cover 7 keeps pressing the water tank housing 3, which can improve the stability of the press-fitting operation.

[0054] When the lifting rod 61 moves upward, the lifting rod 61 directly drives the pressing plate 4 and the first limiting plate 612 to move upward together. On the one hand, the distance between the first limiting plate 612 and the second limiting plate 71 increases, enabling the spring 8 located between the first limiting plate 612 and the second limiting plate 71 to stretch, and reducing the pressing force of the pressing cover 7 on the water tank housing 3. On the other hand, both the pressing plate 4 and the first limiting plate 612 move upward relative to the pressing cover 7, and the first limiting plate 612 gets closer to the top wall of the pressing cover 7. As the lifting rod 61 continues to move upward, the pressing plate 4 abuts against the bottom surface of the second limiting plate 71, and the first limiting plate 612 abuts against the top wall of the pressing cover 7, causing the pressing cover 7 to move upward away from the water tank housing 3 together with the pressing plate 4 and the first limiting plate 612.

[0055] To guide the axial deformation of the spring 8, refer to Figure 3 , a guide rod 711 is fixedly installed on the top surface of the second limiting plate 71. The guide rod 711 penetrates upward through the first limiting plate 612 and the top wall of the pressing cover 7. Both the first limiting plate 612 and the top wall of the pressing cover 7 are vertically slidably connected to the guide rod 711, and the spring 8 is sleeved on the guide rod 711.

[0056] Furthermore, refer to Figure 3 , the bottom of the pressing cover 7 is provided with an outwardly bent extension plate 72, and the extension plate 72 is used to fit against the outer side wall of the water tank housing 3. The setting of the extension plate 72 can increase the pressing area when the pressing cover 7 presses the water tank housing 3, which is beneficial to further improving the stability of pressing the positioning ring 5.

[0057] The working principle of pressing the positioning ring 5 onto the water tank housing 3 in Embodiment 1 is as follows:

[0058] (1) The worker places the water tank housing 3 on the support beam 21 and inserts the positioning ring 5 into a row of mounting holes 31 of the water tank housing 3. At this time, refer to Figure 4 .

[0059] (2) Start the driving member to drive the lifting rod 61 to descend. Refer to the state change in Figures 4 to 5 . When the lifting rod 61 descends, the bottom of the pressing cover 7 first contacts the water tank housing 3. As the lifting rod 61 continues to descend, the lifting rod 61 drives the first limiting plate 612 to descend. The first limiting plate 612 approaches the second limiting plate 71 against the elastic force of the spring 8, causing the spring 8 to be compressed. The pushing force of the compressed spring 8 on the second limiting plate 71 increases, and the second limiting plate 71 transmits the pushing force to the pressing cover 7, increasing the pressing force of the pressing cover 7 on the water tank housing 3. At the same time, the pressing plate 4 descends and approaches the positioning ring 5 inserted in the mounting hole 31. As the lifting rod 61 continues to descend, refer to Figure 6, while pressing the pressing plate 4, the positioning rings 5 inserted into all the mounting holes 31 are completely pressed into the mounting holes 31 at the same time. During this process, the pressing cover 7 keeps pressing the water tank housing 3.

[0060] (3) Start the driving member to drive the lifting rod 61 to rise. The lifting rod 61 directly drives the pressing plate 4 and the first limiting plate 612 to move upward together. On the one hand, the distance between the first limiting plate 612 and the second limiting plate 71 increases, so that the spring 8 located between the first limiting plate 612 and the second limiting plate 71 can be stretched, and the pressing force of the pressing cover 7 on the water tank housing 3 is weakened; on the other hand, both the pressing plate 4 and the first limiting plate 612 move upward relative to the pressing cover 7, and the first limiting plate 612 gets closer to the top wall of the pressing cover 7. As the lifting rod 61 continues to move upward, the pressing plate 4 abuts against the bottom surface of the second limiting plate 71, and the first limiting plate 612 abuts against the top wall of the pressing cover 7, so that the pressing cover 7 moves upward away from the water tank housing 3 together with the pressing plate 4 and the first limiting plate 612.

[0061] (4) The worker removes the water tank housing 3 with the positioning rings 5 press-fitted.

[0062] According to the above working principle, in a positioning ring pressing device for a solar water heater in Embodiment 1 of the present invention, the lifting mechanism can drive the pressing plate 4 to perform a pressing action. The pressing plate 4 can press the positioning rings 5 inserted into all the mounting holes 31 at the same time, realizing the synchronous press-fitting of all the positioning rings 5. Compared with the prior art, the operation of manual pressing by workers is omitted, which is beneficial to reducing the labor intensity of workers, and can improve the installation efficiency.

[0063] By setting the pressing cover 7 and the elastic member, when the lifting mechanism drives the pressing plate 4 to perform a pressing action, the pressing cover 7 can press the water tank housing 3, and the pressing force of the pressing cover 7 on the water tank housing 3 gradually increases, preventing the water tank housing 3 from shaking during the process of press-fitting the positioning rings 5, improving the stability of the water tank housing 3, and being beneficial to improving the stability and reliability of the press-fitting operation.

[0064] Embodiment 2:

[0065] This Embodiment 2 further improves Embodiment 1:

[0066] Refer to Figures 7 to 8 , a limiting structure is provided on one or two side frames 13. The limiting structure includes a telescopic member 91 and an end face baffle 92. The telescopic member 91 can be an oil cylinder or a cylinder or an electric push rod. The bottom of the telescopic member 91 is rotatably connected to the bottom beam 131 fixedly installed at the bottom of the side frame 13, the top of the telescopic member 91 is rotatably connected to the upper part of the end face baffle 92, the bottom of the end face baffle 92 is rotatably connected to the support beam 21, and a groove 93 is provided on the side of the end face baffle 92 facing the water tank housing 3. The groove 93 is adapted to the end of the water tank housing 3.

[0067] After the water tank housing 3 is placed on the support beam 21, the telescopic member 91 can be activated to extend, and the telescopic member 91 drives the end face baffle 92 to turn upward, so that the groove 93 on the end face baffle 92 can be buckled on the end of the water tank housing 3. When the telescopic member 91 shortens, the telescopic member 91 drives the end face baffle 92 to turn downward, so that the groove 93 on the end face baffle 92 can be separated from the end of the water tank housing 3.

[0068] When a limiting structure is provided on one side frame 13, one end of the water tank housing 3 along the long side direction can be buckled by the groove 93 on the end face baffle 92. At this time, the groove 93 can limit the movement of the water tank housing 3 in the vertical direction of the long side direction of the water tank housing 3.

[0069] When limiting structures are provided on both side frames 13, both ends of the water tank housing 3 along the long side direction can be buckled by the grooves 93 on the end face baffles 92. At this time, the two end face baffles 92 can further limit the water tank housing 3, not only preventing the water tank housing 3 from moving in the vertical direction of the long side direction of the water tank housing 3, but also preventing the water tank housing 3 from moving in the long side direction of the water tank housing 3.

[0070] It can be seen from the above introduction that by setting the limiting structure, the stability of the water tank housing 3 on the support beam 21 can be improved, so that when the press-fitting positioning ring 5 is press-fitted, the accuracy and stability of the press-fitting positioning ring 5 can be improved.

[0071] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these changes and modifications.

Claims

1. A positioning and crimping device for a solar water heater, characterized in that, It includes a frame. A support structure is provided at the lower part of the frame, and the support structure is used to support the water tank shell. A pressing plate is provided above the water tank shell. A number of lifting mechanisms are provided at the top of the pressing plate. The lifting mechanisms are connected to the top of the frame. A pressing cover is provided outside the pressing plate. The pressing cover is vertically slidably matched with the lower part of the lifting mechanism. An elastic member is provided inside the pressing cover. The top of the elastic member is connected to the lower part of the lifting mechanism, and the bottom of the elastic member is connected to the pressing cover.

2. The positioning ring pressing device for a solar water heater according to claim 1, wherein, Two of the lifting mechanisms are provided along the long side direction of the water tank shell.

3. The positioning ring pressing device for a solar water heater according to claim 1, characterized in that, The lifting mechanism includes a driving member and a lifting rod. The driving member is used to drive the lifting rod to move up and down. The lifting rod is vertically slidably connected to the top of the frame. A first limiting plate and the pressing plate are provided at the lower part of the lifting rod. The first limiting plate is provided above the pressing plate. A through hole is provided at the top of the pressing cover, and the through hole is vertically slidably matched with the lifting rod. A second limiting plate is provided on the inner wall of the pressing cover, and the second limiting plate is provided between the first limiting plate and the pressing plate. The top of the elastic member is connected to the first limiting plate, and the bottom of the elastic member is connected to the second limiting plate.

4. The positioning ring pressing device for a solar water heater according to claim 3, characterized in that, A guiding rod is provided on the top surface of the second limiting plate. The guiding rod penetrates upward through the first limiting plate and the top wall of the pressing cover. Both the first limiting plate and the top wall of the pressing cover are vertically slidably connected to the guiding rod. The elastic member is a spring, and the spring is sleeved on the guiding rod.

5. A positioning ring pressing device for a solar water heater according to claim 3, characterized in that, The frame includes a bottom frame. A top frame is provided above the bottom frame. Two side frames arranged side by side are provided between the bottom frame and the top frame. The support structure is provided at the lower part of the side frame. The upper part of the lifting rod penetrates upward through the top frame, and the upper part of the lifting rod is vertically slidably connected to the top frame.

6. The positioning ring pressing device for a solar water heater according to claim 5, wherein, A guiding cylinder is provided at the top of the top frame. The upper part of the lifting rod penetrates upward through the guiding cylinder, and the upper part of the lifting rod is vertically slidably connected to the guiding cylinder.

7. A positioning ring pressing device for a solar water heater according to claim 5, characterized in that, A stop block is provided in the middle of the lifting rod, and the stop block is used to abut against the bottom surface of the top frame.

8. A positioning ring pressing device for a solar water heater according to claim 5, characterized in that, A limiting structure is provided on one or two of the side frames. The limiting structure includes a telescopic member and an end face baffle. The bottom of the telescopic member is rotatably connected to the bottom of the side frame. The top of the telescopic member is rotatably connected to the upper part of the end face baffle. The bottom of the end face baffle is rotatably connected to the support structure. A groove is provided on the side of the end face baffle facing the water tank shell, and the groove is adapted to the end of the water tank shell.

9. The positioning ring pressing device for a solar water heater according to claim 3, wherein, Reinforcing ribs are provided on the top surface of the pressing plate, and the reinforcing ribs are connected to the bottom of the lifting rod.

10. The positioning ring pressing device for a solar water heater according to claim 1, characterized in that, An extension plate bent outward is provided at the bottom of the pressing cover, and the extension plate is used to fit the outer side wall of the water tank shell.

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