Centralized liquid heating platform

Abstract

The invention relates to the technical field of liquid heating, in particular to a centralized liquid heating platform. Comprising a lower box body and a control box above the lower box body; a lower box door is arranged on the front side of the lower box body; the plurality of liquid heaters are mounted in the lower box body through a mounting plate and are connected in series; the bottoms of the plurality of liquid heaters are communicated with the outer side of the lower box body through a fourth coiled pipe and a fourth joint; the liquid inlet joints and the liquid outlet joints of the plurality of liquid heaters are connected in series through a second coiled pipe; the two ends of the second coiled pipe are connected with the outer side of the lower box body through second connectors. The starting number of the liquid heaters is matched with the flow of the liquid to be heated, so that the heating requirements of different liquid flows are met, in addition, the liquid can cross the liquid heaters which are not started, and under the condition that the liquid does not pass through the liquid heaters which are not started, the liquid heaters which are not started can be protected, and the service life of the heating platform is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid heating, and more specifically, to a centralized liquid heating platform. Background Art

[0002] As a device that can accurately heat a liquid to a specific temperature, liquid heaters play a crucial role in many fields such as chemical industry, food, and scientific research, providing reliable and efficient solutions for various liquid heating scenarios. Its working mechanism is very clear: during operation, the liquid flows into the liquid heater through the liquid inlet connector. The heating wire inside quickly converts electrical energy into heat energy to efficiently heat the liquid, and the heated liquid is smoothly discharged through the liquid outlet connector. However, the power of a single liquid heater has limitations and is difficult to meet high-power heating requirements. Therefore, with the continuous progress of technology, a centralized liquid heating platform has emerged.

[0003] The centralized liquid heating platform innovatively connects multiple liquid heaters in series. During operation, the liquid sequentially passes through each liquid heater along the pipeline. During this process, multiple liquid heaters will heat the flowing liquid in relays, and the heated liquid then flows out along the pipeline. In this platform, the number of liquid heaters enabled is proportional to the heating power. The more the number of enabled heaters, the greater the power of the heating platform. To enable the centralized liquid heating platform to flexibly adapt to different power requirements, the platform can adjust the number of enabled liquid heaters according to the actual heating needs. However, this design also has drawbacks. For those liquid heaters that have not been enabled for a long time, the liquid to be heated still flows through them. Over time, on the one hand, it will cause unnecessary energy loss. On the other hand, the continuous scouring of the liquid will accelerate the aging and damage of the non-operating liquid heaters, greatly shortening their service life. Summary of the Invention

[0004] To make up for the deficiencies of the prior art, the present invention proposes a centralized liquid heating platform. The number of enabled liquid heaters in the present invention is adapted to the flow rate of the liquid to be heated, thereby meeting the heating requirements of different liquid flow rates. In addition, the liquid can bypass the non-enabled liquid heaters, and the protection of the non-enabled liquid heaters can be achieved without passing through the non-enabled liquid heaters, extending the service life of the heating platform.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: A centralized liquid heating platform described in the present invention includes a lower box body and a control box above the lower box body; a lower box door is provided on the front side of the lower box body; a plurality of liquid heaters are installed inside the lower box body in series through a mounting plate; the bottoms of the plurality of liquid heaters are connected to the outside of the lower box body through a fourth coiled pipe and a fourth joint; the liquid inlet joints and liquid outlet joints of the plurality of liquid heaters are connected in series through a second coiled pipe; both ends of the second coiled pipe are connected to the outside of the lower box body through a second joint; a first coiled pipe is provided directly above the plurality of liquid heaters; one end of the first coiled pipe is communicated with the liquid outlet end of the second coiled pipe; the first coiled pipe and the second coiled pipe are respectively connected in series with the upper part and the lower part of an I-shaped valve; the lower part of the I-shaped valve is connected in series with the liquid inlet joint of the liquid heater; the inside of the I-shaped valve is from top to bottom respectively an upper channel, a vertical channel and a lower channel; an inclined flow groove is provided at the liquid inlet end of the lower channel and the lower end of the vertical channel; a valve core is movably and hermetically connected up and down at the position where the lower end of the vertical channel is communicated with the lower channel; the downward-moved valve core can block the liquid outlet end of the lower channel, and the upward-moved valve core can block the lower end of the vertical channel.

[0006] Preferably, a third coiled pipe is coiled directly below the I-shaped valve; one end of the third coiled pipe is communicated with the liquid inlet end of the second coiled pipe; an elastic bladder is provided inside the third coiled pipe; a driving groove is provided through the upper inner wall of the third coiled pipe; a driving rod is slidably connected in the driving groove; the upper end of the driving rod passes through the bottom of the I-shaped valve and is fixedly connected to the lower surface of the valve core; the driving rod is slidably and hermetically connected to the I-shaped valve; the lower end of the driving rod abuts against the outer wall of the elastic bladder inside the third coiled pipe.

[0007] Preferably, the upper surface of the valve core is connected to a valve seat through a spring; the valve seat is located inside the vertical channel and is bar-shaped; the elastic forces of the plurality of springs increase sequentially in the liquid flow direction inside the second coiled pipe; the upper surface of the valve seat is rotatably connected to a bolt; the upper end of the bolt passes through the top of the I-shaped valve and is threadedly and hermetically connected to the I-shaped valve.

[0008] Preferably, the outer diameter of the spring is smaller than the inner diameter of the vertical channel; there is a gap between the outer edge of the spring and the inner wall of the vertical channel.

[0009] Preferably, the cross-section of the driving rod is rectangular; a rotating groove is provided on the lower outer wall of the driving rod; a rotating block is rotatably connected in the rotating groove; the rotating block forms an integral body with the outer surface of the driving rod before rotation; the rotating block is staggered from the outer surface of the driving rod after rotation.

[0010] Preferably, the rotating groove is rotatably connected to the rotating block through a first torsion spring; a lower groove is provided at the upper port of the driving groove facing downwards; the rotating block can be caught in the lower groove.

[0011] Preferably, air holes are provided at the upper position of the outer wall of the third coiled pipe.

[0012] Preferably, the lower end of the driving rod is connected to a cross bar; the cross bar is located inside the third coiled pipe and abuts against the outer wall of the elastic bladder.

[0013] Preferably, the middle section of the cross bar is rotatably connected to the lower end of the driving rod by a second torsion spring.

[0014] The beneficial effects of the present invention are as follows: 1. The number of liquid heaters enabled in the present invention is adapted to the liquid flow rate to be heated, thus meeting the heating requirements for different liquid flow rates. In addition, the liquid can bypass the unenabled liquid heaters, and without passing through the unenabled liquid heaters, the unenabled liquid heaters can be protected, extending the service life of the heating platform.

[0015] 2. By adjusting the pressing force of the spring on the valve core, the present invention changes the force required to trigger the valve core, thereby changing the opening sensitivity of the liquid heater to meet the heating requirements for different types of liquids.

[0016] 3. In the present invention, the transfer block moves out of the driving groove to above the driving groove along with the driving rod. Then, after rotating the transfer block by 90 degrees and releasing the driving rod, the driving rod moves downward under the action of the upper spring. During the downward movement of the driving rod, the transfer block is vertically abutted against the upper port of the driving groove, restricting the driving rod from moving downward, so that the corresponding valve core cannot move in the vertical channel, realizing the normally open state of the corresponding liquid heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 is a perspective view of the present invention; Figure 2 is a view of the present invention with the lower box door open; Figure 3 is a perspective view of the internal parts of the middle box body of the present invention; Figure 4 is a perspective view of the third coiled pipe of the present invention; Figure 5 is Figure 4 an enlarged view of part A in Figure 6 is a cross-sectional view of the I-shaped valve of the present invention; Figure 7 is a cross-sectional view of the second coiled pipe of the present invention; Figure 8 is a perspective view of the valve seat of the present invention; Figure 9It is a perspective view of the rotating block being snapped into the lower groove in the present invention.

[0019] In the figure: lower box body 1, lower box door 11, control box 2, liquid heater 3, mounting plate 31, liquid inlet joint 32, liquid outlet joint 33, fourth coiled pipe 4, fourth joint 41, second coiled pipe 5, second joint 51, first coiled pipe 6, I-shaped valve 7, upper channel 71, vertical channel 72, lower channel 73, inclined flow groove 74, valve core 8, spring 81, valve seat 82, bolt 83, third coiled pipe 9, elastic bladder 91, driving groove 92, driving rod 93, rotating groove 94, rotating block 95, first torsion spring 96, lower groove 97, air vent 98, cross bar 99, second torsion spring 991. Specific embodiments

[0020] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0021] As Figures 1 to 9 shown, the present invention includes the following embodiments: Embodiment 1: A centralized liquid heating platform, including a lower box body 1 and a control box 2 above the lower box body 1; a lower box door 11 is provided on the front side of the lower box body 1; a plurality of liquid heaters 3 are installed inside the lower box body 1 in series through a mounting plate 31; the bottoms of the plurality of liquid heaters 3 are connected to the outside of the lower box body 1 through a fourth coiled pipe 4 and a fourth joint 41; the liquid inlet joints 32 and liquid outlet joints 33 of the plurality of liquid heaters 3 are connected in series through a second coiled pipe 5; both ends of the second coiled pipe 5 are connected to the outside of the lower box body 1 through a second joint 51; a first coiled pipe 6 is provided directly above the plurality of liquid heaters 3; one end of the first coiled pipe 6 is communicated with the liquid outlet end of the second coiled pipe 5; the first coiled pipe 6 and the second coiled pipe 5 are respectively connected in series with the upper part and the lower part of an I-shaped valve 7; the lower part of the I-shaped valve 7 is connected in series at the front end position of the liquid inlet joint 32 of the liquid heater 3; inside the I-shaped valve 7, there are an upper channel 71, a vertical channel 72 and a lower channel 73 from top to bottom; an inclined flow groove 74 is provided at the connection where the liquid inlet end of the lower channel 73 is communicated with the lower end of the vertical channel 72; a valve core 8 is movably and hermetically connected up and down at the connection where the lower end of the vertical channel 72 is communicated with the lower channel 73; the downward-moving valve core 8 can block the liquid outlet end of the lower channel 73, and the upward-moving valve core 8 can block the lower end of the vertical channel 72.

[0022] In this embodiment, a third coiled pipe 9 is coiled directly below the I-shaped valve 7; one end of the third coiled pipe 9 is communicated with the liquid inlet end of the second coiled pipe 5; an elastic bladder 91 is arranged inside the third coiled pipe 9; a driving groove 92 is penetrated and arranged on the upper inner wall of the third coiled pipe 9; a driving rod 93 is slidably connected in the driving groove 92; the upper end of the driving rod 93 passes through the bottom of the I-shaped valve 7 and is fixedly connected to the lower surface of the valve core 8; the driving rod 93 is slidably and sealingly connected with the I-shaped valve 7; the lower end of the driving rod 93 abuts against the outer wall of the elastic bladder 91 inside the third coiled pipe 9.

[0023] After the liquid heating platform is connected to the equipment that requires liquid heating, the liquid is pressurized under the action of the liquid pump and enters the second coiled pipe 5 along one of the second connectors 51. After the liquid inlet end of the second coiled pipe 5 receives the liquid, the liquid will enter the liquid inlet end of the lower channel 73 of the first I-shaped valve 7 along the inner side of the second coiled pipe 5. After the liquid enters the liquid inlet end of the second coiled pipe 5, the liquid will enter the third coiled pipe 9. The liquid will expand the elastic bladder 91 inside the third coiled pipe 9. The greater the pressure of the liquid to be heated, the longer the length that the elastic bladder 91 is expanded. The elastic bladder 91 is an elastic bladder, and one end is an opening and the other end is closed. During the expansion process of the elastic bladder 91, it will squeeze the driving rod 93 to slide upward along the driving groove 92, so as to open the valve cores 8 in the first and second I-shaped valves 7. When other valve cores 8 are not opened, the number of liquid heaters 3 in the lower box body 1 is specifically customized according to requirements. Taking four liquid heaters 3 as an example, after the valve core 8 in the first I-shaped valve 7 moves upward, it will enter the vertical channel 72 of the first I-shaped valve 7. In this way, the liquid inlet end and the liquid outlet end of the lower channel 73 in the first I-shaped valve 7 are communicated, and the lower channel 73 and the vertical channel 72 in the first I-shaped valve 7 are disconnected. In this way, after the liquid inlet end of the second coiled pipe 5 receives the liquid, the liquid flows into the first liquid heater 3 along the lower channel 73 of the first I-shaped valve 7. The heating wire inside the first liquid heater 3 works to heat the liquid. After the liquid is heated, it will flow out through the liquid outlet joint 33 of the first liquid heater 3 to the liquid inlet end of the lower channel 73 of the second I-shaped valve 7. After the valve core 8 in the second I-shaped valve 7 moves upward, it will enter the corresponding vertical channel 72. In this way, the liquid inlet end and the liquid outlet end of the lower channel 73 of the second I-shaped valve 7 are communicated, and the lower channel 73 and the vertical channel 72 of the second I-shaped valve 7 are disconnected. In this way, the liquid will enter the second liquid heater 3 along the lower channel 73 in the second I-shaped valve 7. The second liquid heater 3 continues to heat the liquid inside. After the liquid is heated, it will enter the liquid inlet end of the lower channel 73 of the third I-shaped valve 7 along the liquid outlet joint 33 of the second liquid heater 3.

[0024] Since the valve core 8 in the lower channel 73 of the third I-shaped valve 7 is located at the lower limit position, the liquid inlet end and the liquid outlet end of the lower channel 73 in the third I-shaped valve 7 are disconnected. However, the liquid inlet end of the lower channel 73 in the third I-shaped valve 7 is communicated with the vertical channel 72. The liquid will flow along the liquid inlet end of the lower channel 73 of the third I-shaped valve 7, the inclined flow groove 74, the vertical channel 72, and the upper channel 71 into the first coiled tube 6. In this way, the liquid will bypass the third liquid heater 3 and the fourth liquid heater 3 and finally be discharged along the liquid outlet end of the second coiled tube 5. To prevent the liquid from flowing back to the third liquid heater 3 and the fourth liquid heater 3, a liquid inlet check valve is arranged at the position of the liquid inlet end of the lower channel 73 in the I-shaped valve 7. The heated liquid finally flows out along the liquid outlet end of the second coiled tube 5 and another second joint 51; During this process, if the flow rate of the liquid to be heated increases, the originally enabled number of liquid heaters 3 does not meet the heating requirements. Moreover, the inner cross-section of the second coiled tube 5 is limited, resulting in an increase in the liquid pressure inside the second coiled tube 5. After the increased liquid pressure is transmitted to the inside of the elastic bladder 91, the expansion length of the elastic bladder 91 increases, causing the valve core 8 in the third I-shaped valve 7 to move upward; if the flow rate of the liquid to be heated decreases, the originally enabled number of liquid heaters 3 is excessive, the liquid pressure inside the second coiled tube 5 will decrease, causing the expansion length of the elastic bladder 91 to decrease, that is, to shrivel, causing the valve core 8 in the second I-shaped valve 7 to move downward and reset; in this way, the enabled number of liquid heaters 3 is adapted to the flow rate of the liquid to be heated, thereby meeting the heating requirements for different liquid flow rates. In addition, the liquid can bypass the unused liquid heaters 3. Without passing through the unused liquid heaters 3, the unused liquid heaters 3 can be protected, extending the service life of the heating platform.

[0025] In this embodiment, the fourth coiled tube 4 is used to collect and discharge the liquid flowing out from the drain joint at the bottom inside the liquid heater 3, so that no liquid remains inside the liquid heater 3, and the drain joint is in a closed state during the operation of the liquid heater.

[0026] Embodiment 2: The upper surface of the valve core 8 is connected to the valve seat 82 through a spring 81; the valve seat 82 is located in the vertical channel 72 and has a strip shape; the elastic forces of the multiple springs 81 increase sequentially in the liquid flow direction inside the second coiled tube 5; the upper surface of the valve seat 82 is rotatably connected to a bolt 83; the upper end of the bolt 83 passes through the top of the I-shaped valve 7 and is threadedly and sealingly connected to the I-shaped valve 7.

[0027] In this embodiment, the outer edge diameter of the spring 81 is smaller than the inner diameter of the vertical channel 72; there is a gap between the outer edge of the spring 81 and the inner wall of the vertical channel 72.

[0028] Different types of liquids have different heating efficiencies. Before using the heating platform for heating, open the lower box door 11 on the front side of the lower box body 1, and tightening the bolt 83 will drive the valve seat 82 to move down or up. During the upward movement of the valve seat 82, the distance from the valve seat 82 to the drive groove 92 increases, which increases the initial expansion degree of the spring 81 and reduces the clamping force of the spring 81 on the valve core 8. In this way, the drive rod 93 requires a smaller force to drive the valve core 8 to move up, and the upward movement of the drive rod 93 is achieved by driving the elastic bag 91 to expand and bulge due to the liquid pressure inside the elastic bag 91. Therefore, the liquid pressure of the liquid to be heated will also trigger the drive rod 93 to drive the valve core 8 to move up when it is relatively small, thereby improving the opening sensitivity of the liquid heater 3.

[0029] It should be noted that the liquid heater 3 will work when it is determined that liquid has entered the interior, or it will work after detecting that the valve core 8 has moved upward, and the specific setting is based on the needs; when the bolt 83 is turned to drive the valve seat 82 to move downward, the distance from the valve seat 82 to the driving groove 92 is reduced, so that the initial expansion degree of the spring 81 is reduced, and the clamping force of the spring 81 on the valve core 8 is increased, so that the driving rod 93 needs a greater force to drive the valve core 8 to move upward, so that the liquid pressure of the liquid to be heated can trigger the driving rod 93 to move upward under greater conditions, thus reducing the opening sensitivity of the liquid heater 3. Therefore, by adjusting the clamping force of the spring 81 on the valve core 8, the force with which the valve core 8 is triggered is changed, thereby changing the opening sensitivity of the liquid heater 3 to meet different types of liquid heating needs.

[0030] In this embodiment, when the valve seat 82 is close to the extreme position of the valve core 8, that is, when the spring 81 is fully compressed, the valve core 8 cannot move upward, so the corresponding liquid heater 3 is completely closed. This can meet the need to close some damaged liquid heaters 3 to avoid damage to one of the multiple liquid heaters 3 connected in series, which makes the heating platform unusable. The valve seat 82 is strip-shaped and will not affect the flow of liquid in the vertical channel 72. There is a gap between the outer edge of the spring 81 and the inner wall of the vertical channel 72, which will not affect the flow of liquid.

[0031] Embodiment 3: The driving rod 93 has a rectangular cross-section; a rotation groove 94 is provided on the lower outer wall of the driving rod 93; a rotating block 95 is rotatably connected in the rotation groove 94; the rotating block 95 forms an integral body with the outer surface of the driving rod 93 before rotation; the rotating block 95 is offset from the outer surface of the driving rod 93 after rotation.

[0032] In this embodiment, the rotating groove 94 is rotatably connected to the rotating block 95 via a first torsion spring 96 ; a lower groove 97 is provided on the upper end of the driving groove 92 facing downward; and the rotating block 95 can be inserted into the lower groove 97 .

[0033] When it is necessary to keep the corresponding liquid heater 3 always on, just move the driving rod 93 upward. Moving the driving rod 93 upward will drive the valve core 8 upward. When the valve core 8 moves upward, it will enter the corresponding vertical channel 72. In this way, the liquid inlet end and the liquid outlet end of the horizontally placed lower channel 73 are connected, enabling the corresponding liquid heater 3 to be enabled. During the upward movement of the driving rod 93, the rotating block 95 will be driven upward. In the initial state, the rotating block 95 is located inside the third coiled pipe 9. When the rotating block 95 is in the rotating groove 94 before rotation, the rotating block 95 and the outer wall of the driving rod 93 will form a whole. In this way, the rotating block 95 can smoothly move upward with the driving rod 93 and pass through the driving groove 92. The rotating block 95 will move out of the driving groove 92 with the driving rod 93 to above the driving groove 92. Then, after controlling the rotating block 95 to rotate 90 degrees, the driving rod 93 is released. Under the action of the upper spring 81, the driving rod 93 moves downward. During the downward movement of the driving rod 93, the rotating block 95 will be vertically pressed against the upper port of the driving groove 92, restricting the driving rod 93 from moving downward. In this way, the corresponding valve core 8 cannot move in the vertical channel 72, realizing the always-on state of the corresponding liquid heater 3.

[0034] To further improve the stability of restricting the downward movement of the driving rod 93, a lower groove 97 is provided at the upper port position of the driving groove 92. The lower groove 97 intersects with the driving groove 92 in the top view projection. In this way, after the rotating block 95 is stuck in the lower groove 97, the rotating block 95 cannot rotate, which is more stable and improves the stability of restricting the downward movement of the driving rod 93. In addition, after the rotating block 95 moves out of the lower groove 97, the first torsion spring 96 will drive the rotating block 95 to automatically reset, making the rotating block 95 and the driving rod 93 form a whole again, enabling the driving rod 93 to pass through the driving groove 92 back and forth more smoothly.

[0035] Embodiment 4: A ventilation hole 98 is provided at a position above the outer wall of the third coiled pipe 9.

[0036] When the liquid to be heated enters the elastic capsule 91, the elastic capsule 91 will expand. During the expansion of the elastic capsule 91, the gas between the outer wall of the elastic capsule 91 and the inner wall of the third coiled pipe 9 will be discharged along the ventilation hole 98. Due to the limited aperture of the ventilation hole 98, the speed of the gas between the inner wall of the third coiled pipe 9 and the outer wall of the elastic capsule 91 being discharged along the ventilation hole 98 is limited. In this way, the expansion speed of the elastic capsule 91 is limited; in addition, when the liquid pressure in the elastic capsule 91 decreases, the elastic capsule 91 will deflate. During the deflation of the elastic capsule 91, the outside gas will enter between the outer wall of the elastic capsule 91 and the inner wall of the third coiled pipe 9 along the ventilation hole 98. Because the aperture of the ventilation hole 98 is limited, the gas replenishment speed between the inner wall of the third coiled pipe 9 and the outer wall of the elastic capsule 91 is limited. In this way, the deflation speed of the elastic capsule 91 is limited. In this way, the upward or downward movement speed of the driving rod 93 is delayed, avoiding the situation that the liquid heater 3 is frequently opened and closed due to unstable liquid pressure in the elastic capsule 91, and thus realizing the protection of the liquid heater 3.

[0037] Embodiment 5: The lower end of the driving rod 93 is connected to a cross bar 99; the cross bar 99 is located inside the third coiled tube 9 and abuts against the outer wall of the elastic bladder 91.

[0038] In this embodiment, the middle position of the cross bar 99 and the lower end of the driving rod 93 are rotatably connected by a second torsion spring 991.

[0039] When liquid enters the elastic bladder 91, the elastic bladder 91 will expand. The principle of expansion and contraction of the elastic bladder 91 can be understood as the balloon principle. The wall of the elastic bladder 91 can increase as it moves away from the liquid inlet. During the expansion of the elastic bladder 91, the cross bar 99 will be pushed upward. The cross bar 99 has a certain span, which enlarges the contact area between the driving rod 93 and the elastic bladder 91, so that the driving rod 93 can be stably triggered. In addition, since the cross bar 99 enlarges the contact area between the driving rod 93 and the outer wall of the elastic bladder 91, the frictional damage between the driving rod 93 and the outer wall of the elastic bladder 91 is reduced, and the service life of the elastic bladder 91 is improved. The cross bar 99 will rotate against the second torsion spring 991 during the upward movement of the elastic bladder 91, and finally the cross bar 99 will move upward to a position near the upper inner wall of the third coiled tube 9; during the process of the elastic bladder 91 deflating, the driving rod 93 will move downward. During the downward movement of the driving rod 93, the cross bar 99 will be driven to move downward. During the downward movement of the cross bar 99, it will rotate under the action of the second torsion spring 991, and the cross bar 99 will obliquely press against the outer wall of the elastic bladder 91, so that the liquid in the elastic bladder 91 can be squeezed out more thoroughly; through the setting of the cross bar 99 in this embodiment, the driving rod 93 is more stable as the elastic bladder 91 expands or contracts.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention 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 limiting the protection scope of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0041] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A centralized liquid heating platform, comprising a lower box body and a control box above the lower box body; characterized in that: The liquid inlet joints and liquid outlet joints of multiple liquid heaters are connected in series through a second coiled pipe; the two ends of the second coiled pipe are connected to the outer side of the lower box body through a second joint; a first coiled pipe is arranged directly above the multiple liquid heaters; one end of the first coiled pipe is connected to the liquid outlet end of the second coiled pipe; the first coiled pipe and the second coiled pipe are respectively connected in series with the upper and lower parts of the I-shaped valve; the lower part of the I-shaped valve is connected in series to the liquid inlet joint of the liquid heater; the interior of the I-shaped valve comprises an upper channel, a vertical channel and a lower channel from top to bottom; an oblique flow groove is provided at the liquid inlet end of the lower channel and the lower end of the vertical channel; the lower end of the vertical channel is connected to the valve core in an upper and lower movable sealing manner at the position where it is connected to the lower channel; the downward-moving valve core can block the liquid outlet end of the lower channel, and the upward-moving valve core can block the lower end of the vertical channel.

2. The centralized liquid heating platform according to claim 1, wherein: A third coiled tube is coiled directly below the I-shaped valve; one end of the third coiled tube is connected to the liquid inlet end of the second coiled tube; an elastic bag is arranged inside the third coiled tube; a driving groove is penetrated through the upper inner wall of the third coiled tube; a driving rod is slidably connected in the driving groove; the upper end of the driving rod passes through the bottom of the I-shaped valve and is fixedly connected to the lower surface of the valve core; the driving rod is slidably and sealingly connected to the I-shaped valve; the lower end of the driving rod abuts against the outer wall of the elastic bag inside the third coiled tube.

3. The centralized liquid heating platform according to claim 2, characterized in that: The upper surface of the valve core is connected to the valve seat through a spring; the upper surface of the valve seat is rotatably connected to a bolt; the upper end of the bolt passes through the top of the I-shaped valve and is sealed with the I-shaped valve thread.

4. A centralized liquid heating platform according to claim 3, characterized in that: The outer edge diameter of the spring is smaller than the inner diameter of the vertical channel.

5. The centralized liquid heating platform according to claim 3, characterized in that: The driving rod has a rectangular cross section; a rotation groove is provided on the lower outer wall of the driving rod; a rotating block is rotatably connected in the rotation groove; the rotating block forms an integral body with the outer surface of the driving rod before rotation; and the rotating block is offset from the outer surface of the driving rod after rotation.

6. A centralized liquid heating platform according to claim 5, characterized in that: The rotating groove is rotatably connected with the rotating block through a first torsion spring; a lower groove is arranged downwardly on the upper end of the driving groove; and the rotating block can be inserted into the lower groove.

7. A centralized liquid heating platform according to claim 2, wherein: The outer wall of the third coiled pipe is provided with a vent hole at an upper position.

8. A centralized liquid heating platform according to claim 2, characterized in that: The lower end of the driving rod is connected to a cross bar; the cross bar is located inside the third coiled tube and abuts against the outer wall of the elastic bag.

9. The centralized liquid heating platform according to claim 8, wherein: The middle section of the crossbar is rotationally connected to the lower end of the driving rod through a second torsion spring.

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